Large Systems
iCOM Microprocessor
Environmental Training and Service Manual
TM-10098: Rev. 02/06
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Disclaimer of Warranties and Limitations of Liabilities
The authors and editors have taken every precaution to ensure accuracy and completeness
in this manual. The authors and editors make no expressed or implied warranty of any
kind with regard to the documentation in this manual. Liebert Corporation assumes no
responsibility, and disclaims all liability for incidental or consequential damages resulting
from the use of this information or from errors or omissions. Liebert Corporation may
make improvements and/or changes in the product(s) described in this manual at any time.
Information in this manual is subject to change at any time and does not represent a
commitment on the part of Liebert Corporation.
Liebert® and the Liebert logo are registered trademarks of Liebert Corporation.
Emerson® and the Emerson logo are registered trademarks of Emerson Electric Co.
Copyright © 2004 by Liebert Corporation
All rights reserved throughout the world.
Specifications subject to change without notice.
Printed in the United States of America
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Table of Contents
Chapter 1: Temperature/ Humidity Control
Temperature Control Types
Intelligent Control
6
6
6
8
Proportional Control
8
Proportional + Integral (PI) Control
Proportional + Integral + Derivative (PID) Control
Temperature Control
9
11
11
11
13
18
18
20
21
25
25
27
27
29
31
31
32
33
35
38
40
41
48
49
Operations and Charts
2 Stage Compressorized
4 Stage Compressorized Cooling
Dual Compressor Digital Scroll Operation
Glycool Cooling
Dual Source Cooling
Staged Reheat
Humidity Control
Absolute (Predictive) Humidity Control
Relative Humidity Control
Humidifier Operation
Autoflush Control for Infrared
Dehumidification Operation
1 Stage Dehumidification, Compressorized Operation
2 Stage Dehumidification, Compressorized Operation
Reheat During Dehumidification
Additional Programs
Next Maintenance Calculation
Shared Parameters an Understanding
Networking and Functions
Teamwork
Unit Lead/ Lag or Running/ Standby Fuctions
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Chapter 2: Programming Functions
Programming Functions
52
52
53
54
55
56
56
57
58
59
60
60
67
84
90
92
iCOM Display Components and Functions
iCOM Keypad Layout Descriptions
iCOM Display Symbols/ Icons
Programming Functions
Status Display Screens
Menu Screens – Icons/ Parameter Names
User Menu Icons and Descriptions
Service Menu Icons and Descriptions
Advanced Menu Icons and Descriptions
User Menu Parameters
Service Menu Parameters
Advanced Menu Parameters
Event Notifications Parameters
Event ID Number, Description and Function
Chapter 3: iCOM Hardware Connections
Introduction
100
100
101
102
104
105
106
107
111
112
Display Boards
Unit Control Board Switches and Jumpers
Large Display Switches and Jumpers
Small Display Switches and Jumpers
Temperature/ Humidity Board Switches and Jumpers
Unit Control Board Plug Connectors
Fuse Board Connectors
Temperature/ Humidity Board Connectors
Chapter 4: General Troubleshooting Data
Introduction
114
114
115
116
118
119
Isolation
Basic Operation of the Triac
Basic Operation of the Opto-Isolator
Troubleshooting the Opto-Isolator
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121
123
124
126
143
144
145
146
147
Unit Control Board: Opto-Isolator/ Triac Legends
iCOM Diagnostics/ Service Mode Programs
Basic Troubleshooting Steps
Moisture Content Charts
Suction Transducer Information
Digital Scroll High Temperature Sensor Chart
Unit Code Description
Troubleshooting Checklist
Glossary of Unit/ Systems Parameters
Glossary of Terms
156
160
165
169
170
Computer and Network Terms
Network Information
How To Use The Schematics
Electrical Schematics
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Chapter 1
Temperature and Humidity
Control Programs
This section provides details on how your Liebert iCOM control responds to the
user programmed inputs values and room conditions. Refer to this section when
you need specific information control operation. This section includes details on
four (4) user selectable temperature control programs and two (2) user selectable
and humidity control programs.
Cooling and/ or Heating Required, in Percent (%)
The temperature control programs for the iCOM microprocessor is based on a
calculated percent (%) requirement for cooling and/ or heating. This percent (%)
requirement is determined by the control type (algorithm) selected by the user.
The four (4) user selectable temperature control programs are:
• Intelligent
• Proportional (P)
• Proportional + Integral (PI)
• Proportional + Integral + Derivative (PID)
Temperature Control Program Types
Intelligent Control – Factory Default Setting
The Intelligent Control operates from a set of general rules that defines how the
control output should be adjusted for different system conditions. The rules are
designed to duplicate the actions that an experienced human operator would take
if manually controlling the system.
Basically, this is done in a three-function process that differs from earlier
mathematically defined strict type data, hence, fuzzy logic. The on and off, true or
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untrue type of statement is not used. The consideration now is how to set the
input value into a membership set, qualify this membership with rules, then decide
on the output consequence for action. It is not really that simple, but it is basically
how it works. The process:
Membership
• Measure value of input variables
• Map and transfer data into range of set domain
• Assign input membership into sets
Knowledge Base/Decision Making
• Provide a data base of definitions for rules base
• Provide a rules base and define function and domain
• Simulate human decision making based on concepts and actions
defined by implications and rules
Consequence
• Convert defined range of knowledge to a corresponding output
variable
• Define a non-intelligent action from a deduced intelligent action
Just as an operator might take several things into consideration before making a
temperature control decision, the intelligent control can be programmed to do
likewise. For example, not only is the current temperature used in making
temperature control decisions, but also conditions such as:
• How fast is the temperature changing?
• What direction is the temperature changing?
• What is the cooling output now?
• What was the cooling output in the past?
• How long ago was the cooling output changed?
• Other factors
Any number of rules can be used in an intelligent control to define the controls
operation under various operating conditions. Hence, several advantages are
gained from this type of control over a more standard control approach that uses a
fixed mathematical equation to define the operation of the control for all conditions
(such as a Proportional or PID Control). You can expect Intelligent Control to be
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more efficient and precise for most applications, but system performance based on
room conditions is not as predictable as standard approaches that use a fixed
equation.
The Liebert Intelligent Control includes rules that significantly enhance the
performance of the system, both from a standpoint of precision control and system
reliability.
Rules are included that:
• Cause the control to ignore very small or temporary temperature/
humidity deviations. This eliminates unnecessary control adjustments
that contribute to control instability.
• Help limit the frequency of control adjustments thus extending the life of
system components that are susceptible to mechanical wear or cycling.
• Recognize undesired modes of control operation such as hunting, and
make adjustments to the control response to eliminate them.
• Estimate the present load on the system and then tend to force the
control output to the appropriate state.
• Recognizes conditions, which indicate a large load change and allows
the control to temporarily respond more quickly than normal.
• Cause the control to anticipate the need for reheat during
dehumidification and activates reheats when overcooling occurs.
Proportional (P) Control
The proportional control is the standard control method that maintains the room at
a temperature proportional to the load. The temperature maintained increases as
the room load increases. At full load the room would be controlled at a
temperature equal to the temperature set point (TSP) plus ½ of the temperature
proportional band (PB). The operator programmed inputs are the temperature set
point (TSP) and temperature proportional band (PB) adjustments. The operator
may also program a temperature dead band (DB) adjustment.
Proportional + Integral (PI) Control
The PI control combines two (2) individual terms to determine the control output
for a given set of conditions. Note that PI control is used only for temperature. If
PI control is selected, the humidity control will be in percent relative humidity
(%RH).
The proportional (P) term is determined by the difference between the current
temperature and the control set point. This term is expressed in % cooling
(heating desired for each degree above (below) the set point. It is adjustable from
0% to 100% per degree. The purpose of this term is to adjust the control output
for any deviation between the current temperature and the control set point.
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The integral (I) term is determined by two things: the difference between the return
air temperature and control set point and the amount of time this difference has
existed. This term is expressed in % cooling (heating) desired for each minute
and degree above (below) the set point. It is adjustable from 0% - 100% per
degree/minute. The purpose of this term is to force the control to maintain the
temperature around the set point by slowly but continuously adding (subtracting) a
small amount of cooling (heating) to the total control output until the temperature is
at the set point.
Proportional + Integral + Derivative (PID) Control
The PID control combines three (3) individual terms to determine the control
output for a given set of conditions. Note that PID control is used only for
temperature. If PID control is selected, the humidity control will be in percent
relative humidity (%RH).
The proportional (P) term is determined by the difference between the current
temperature and the control set point. This term is expressed in % cooling
(heating desired for each degree above (below) the set point. It is adjustable from
0% to 100% per degree. The purpose of this term is to adjust the control output
for any deviation between the current temperature and the control set point.
The integral (I) term is determined by two things: the difference between the return
air temperature and control set point and the amount of time this difference has
existed. This term is expressed in % cooling (heating) desired for each minute
and degree above (below) the set point. It is adjustable from 0% - 100% per
degree/minute. The purpose of this term is to force the control to maintain the
temperature around the set point by slowly but continuously adding (subtracting) a
small amount of cooling (heating) to the total control output until the temperature is
at the set point.
The derivative (D) term is determined by the rate of change of temperature. This
term is expressed in % cooling (heating) desired for each degree per minute rise
(fall) in temperature. It is adjustable from 0% to 100% per degree/minute. The
purpose of this term is to adjust the control output for quickly changing
temperatures, thus providing an anticipation control.
All three terms are adjusted by selecting the “Setpoints” icon in either the USER or
SERVICE Menu screen. If PID control is selected, the temperature proportional
band value (and optional temperature dead band value) is not used by the control.
For optimum performance, a PID control must be adjusted or tuned according to
the characteristics of the particular space and load to be controlled. Improper
tuning can cause the control to exhibit poor response and/ or hunting. The
characteristics of the space and load may change seasonally, so occasional
returning is required for optimum performance.
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A suggested tuning procedure is as follows:
1. Initially adjust the integral and derivative settings to 0% / degree-min
and 0% / degree / min..
2. Starting with 20% / degree, adjust the proportional setting in small
increments (10% steps) until the control sustains a constant hunting
action (the temperature swings are approximately the same amplitude
from one peak to the next).
3. Note the time in minutes between peaks of adjacent temperature
swings and the amplitude of the temperature swing (degrees above the
set point).
4. Adjust the proportional control setting to about l/2 the value obtained in
Step 2.
5. Adjust the integral setting to a value calculated by the following
equation: approximate room load (in % full load) time between
peaks x peak amplitude x 4.
Note: If calculation results in a value of less than 1%, then set the
integral to 1%.
6. Adjust the derivative to a value calculated by the following equation:
time between peaks x 5%.
The above tuning procedure is only an approximation for an initial set of
adjustments and are based on the "average" room characteristics. Your particular
settings may need to be further adjusted for optimum PID control performance.
Some suggestions for additional tuning are as follows:
• If cooling output overshoot is occurring on load changes, decrease
the proportional setting or the derivative setting.
• If system hunting occurs with constant room load, decrease the
integral setting.
• If the control responds too slowly, resulting in large temperature
excursions on a load change, increase the proportional setting or
the derivative setting.
• If a constant temperature deviation exists between the
temperature and set point, increase the integral setting.
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Temperature Control
Operations and Charts
The temperature proportional control band value is divided into two parts: the
temperature set point plus ½ of the temperature proportional band for cooling
operation and the temperature set point minus ½ of the temperature proportional
band for heating operation. A temperature dead band can also be programmed
into the control to shift the cooling and/ or heating on/ off operations away from the
temperature set point.
This programmed temperature dead band value is divided into two parts: the
temperature set point plus ½ of the dead band – no cooling operation and the
temperature set point minus ½ of the band – no heating operation.
The temperature set point range is adjustable from 41 - 104°F in increments of
1°F. The temperature proportional band range is adjustable from 2 - 54°F in
increments of 1°F. The temperature dead band range is adjustable from 0 - 36°F
in increments of 1°F.
Standard 2 Stage Compressorized Cooling
The basic temperature cooling control band is established at the temperature set
point with the length equal to ½ of the programmed temperature proportional band
divided by the number of cooling stages.
The Liebert DS units are supplied with two (2) compressors, each compressor is
rated at ½ of the unit capacity. The two (2) compressors will be either the
semi-hermetic or scroll type and will operate in an on/ off configuration to cool the
space.
The temperature controller activates the first cooling stage (lead compressor)
when the return air temperature increases to 50% of the cooling proportional band
and the second cooling stage (lag compressor) at 100% of the cooling proportional
band. The optional hot gas bypass solenoid valve, supplied with each compressor
when ordered, is also energized on a call for cooling.
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The temperature controller deactivates the second stage of cooling (lag
compressor) when the return air temperature decreases to 50% of the cooling
proportional control band value. The first cooling stage (lead compressor) is
deactivated when the return air temperature decreases to the temperature set
point value or 0% of the cooling proportional control band value.
2 Stage Compressorized Cooling – No Dead Band
Temp Set Point + (1/2 Proportional Band)
Temp Set Point: 70°F
Proportional Band: 8°F
Cool 2 On
Cool 1 On
70
71
72
73
74
75
Cool 1 Off
Cool 2 Off
Increasing Temperature
Note: in the above example that the control band begins at the 70°F temperature
set point and has a length of 4°F, which is ½ of the programmed temperature
proportional band value.
As the return air temperature increases Cooling 1 (lead compressor) is activated at
72°F or 50% of the cooling control band. If the return air temperature continues to
increase Cooling 2 (lag compressor) will activate at 74°F or 100% of the cooling
control band.
When the return air temperature starts to decrease, Cooling 2 (lag compressor) is
deactivated at 72°F or 50% of the cooling control band and Cooling 1 (lead
compressor) is deactivated at the temperature set point of 70°F or 0% of the
cooling control band.
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2 Stage Compressorized Cooling – With Dead Band
Temp Set Point + (1/2 Dead Band + 1/2 Proportional Band)
Temp Set Point: 70°F
Proportional Band: 8°F
Dead Band: 2°F
Cool 2 On
Cool 1 On
70
71
72
73
74
75
DB
Cool 2 Off
Increasing Temperature
Cool 1 Off
Note: in the above example that the control band begins at the 70°F temperature
set point and has a length of 5°F, which is ½ of the programmed temperature dead
band value plus ½ of the programmed temperature proportional band value.
As the return air temperature increases Cooling 1 (lead compressor) is activated at
73°F or ½ of the dead band value plus 50% of the cooling control band. If the
return air temperature continues to increase Cooling 2 (lag compressor) will
activate at 75°F or ½ of the dead band value plus 100% of the cooling control
band.
When the return air temperature starts to decrease, Cooling 2 (lag compressor) is
deactivated at 73°F or ½ of the dead band value plus 50% of the cooling control
band and Cooling 1 (lead compressor) is deactivated at 71°F or ½ of the dead
band value plus 0% of the cooling control band.
Remember the temperature dead band value is used by the control to shift the
cooling on/ off operations away from the temperature set point.
Optional 4 - Stage Cooling, Two (2) Compressors with Unloaders
The basic temperature cooling control band is established at the temperature set
point with the length equal to ½ of the programmed temperature proportional band
divided by the number of cooling stages.
The Liebert DS units are supplied with two (2) compressors, each compressor is
rated at ½ of the unit capacity. Each compressor will be the semi-hermetic type
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and will be supplied with an electrical cylinder unloader valve. The electrical
solenoid valve used to unload or reduce the cooling capacity of the compressor.
The compressors will operate in an on/ off - loaded/ unloaded configuration
method to cool the space. The hot gas bypass solenoid valve option is not
available on 4 stage systems.
The temperature controller activates the first cooling stage, lead compressor
unloaded, when the return air temperature increases to 25% of the cooling
proportional band. The second cooling stage, lag compressor unloaded, is
activated when the return air temperature increases to 50% of the cooling
proportional band.
The temperature controller activates the third cooling stage, the lead compressor
loaded, when the return air temperature increases to 75% of the cooling
proportional band. The fourth cooling stage, the lag compressor loaded, is
activated when the return air temperature increases to 100% of the cooling
proportional band.
The temperature controller deactivates the fourth cooling stage, lag compressor
loaded, when the return air temperature decreases to 75% of the cooling
proportional control band value. The third cooling stage, lead compressor loaded,
is deactivated when the return air temperature decreases to 50% of the cooling
proportional control band value.
The temperature controller deactivates the second cooling stage, lag compressor
unloaded, when the return air temperature decreases to 25% of the cooling
proportional control band value. The first cooling stage, lead compressor
unloaded, is deactivated when the return air temperature decreases to the
temperature set point value or 0% of the cooling proportional control band value.
The table below shows the devices activated by each of the four cooling stages.
STAGE COMPRESSORS, UNLOADER STATE
Compressor 1 On, Unloader On (Energized)
Compressor 2 Off, Unloader Off (De-Energized)
1
Compressor 1 On, Unloader On (Energized)
Compressor 2 Off, Unloader On (Energized)
2
Compressor 1 On, Unloader Off (De-Energized)
Compressor 2 On, Unloader On (Energized)
3
Compressor 1 On, Unloader Off (De-Energized)
Compressor 2 On, Unloader Off (De-Energized)
4
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4 Stage Compressorized Cooling – No Dead Band
Temp Set Point + (1/2 Proportional Band)
Temp Set Point: 70°F
Proportional Band: 8°F
Cool 4 On
Cool 2 On
Cool 3 On
Cool 1 On
70
71
72
73
74
75
Cool 2 Off
Cool 4 Off
Cool 1 Off
Cool 3 Off
Increasing Temperature
Note: in the above example that the control band begins at the 70°F temperature
set point and has a length of 4°F, which is ½ of the programmed temperature
proportional band value.
As the return air temperature increases Cooling 1, the lead compressor unloaded,
is activated at 71°F or 25% of the cooling control band. If the return air
temperature continues to increase Cooling 2, the lag compressor unloaded is
activated at 72°F or 50% of the cooling control band. If the return air temperature
continues to increase Cooling 3, the lead compressor is loaded at 73°F or 75% of
the cooling control band. If the return air temperature continues to increase
Cooling 4, the lag compressor is loaded at 74°F or 100% of the cooling control
band.
When the return air temperature starts to decrease, Cooling 4 is deactivated at
73°F or 75% of the cooling control band. If the return air temperature continues to
decrease Cooling 3 is deactivate at 72°F or 50% of the cooling control band. If the
return air temperature continues to decrease Cooling 2 is deactivate at 71°F or
25% of the cooling control band and Cooling 1 is deactivated at the temperature
set point of 70°F or 0% of the cooling control band.
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The example below is based on a temperature set point of 70°F with a control
band length of 4°F, which is ½ of the programmed temperature proportional band
value.
STAGE
TEMPERATURE
Cool 1 ON
Cool 2 ON
Cool 3 ON
Cool 4 ON
Cool 4 OFF
Cool 3 OFF
Cool 2 OFF
Cool 1 OFF
Set point plus 1°F
Set point plus 2°F
Set point plus 3°F
Set point plus 4°F
Set point plus 3°F
Set point plus 2°F
Set point plus 1°F
Set point
4 Stage Compressorized Cooling – With Dead Band
Temp Set Point + (1/2 Dead Band + 1/2 Proportional Band)
Temp Set Point: 70°F
Proportional Band: 8°F
Dead Band: 2°F
Cool 4 On
Cool 3 On
Cool 2 On
Cool 1 On
70
71
72
73
74
75
DB
Cool 4 Off
Cool 2 Off
Cool 3 Off
Increasing Temperature
Cool 1 Off
Note: in the above example that the control band begins at the 70°F temperature
set point and has a length of 5°F, which is ½ of the programmed temperature dead
band value plus ½ of the programmed temperature proportional band value.
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As the return air temperature increases Cooling 1, lead compressor unloaded, is
activated at 72°F or ½ of the dead band value plus 25% of the cooling control
band. If the return air temperature continues to increase Cooling 2, lag
compressor unloaded, will activate at 73°F or ½ of the dead band value plus 50%
of the cooling control band. If the return air temperature continues to increase
Cooling 3, lead compressor unloaded, is activated at 74°F or ½ of the dead band
value plus 75% of the cooling control band. If the return air temperature continues
to increase Cooling 4, lag compressor loaded, will activate at 75°F or ½ of the
dead band value plus 100% of the cooling control band.
When the return air temperature starts to decrease, Cooling 4 is deactivated at
74°F or ½ of the dead band value plus 75% of the cooling control band. If the
return air temperature continues to decrease Cooling 3 will be deactivate at 73°F
or ½ of the dead band value plus 50% of the cooling control band. If the return air
temperature continues to decrease Cooling 2 will be deactivate at 72°F or ½ of the
dead band value plus 25% of the cooling control band and Cooling 1 is
deactivated at 71°F or 1/2 the dead band value plus 0% of the cooling control
band.
Remember the temperature dead band value is used by the control to shift the
cooling on/ off operations away from the temperature set point.
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Optional Dual Compressor Digital Scroll Operation
100
Switch 2nd
1 compressor operation
70
50
PWM
2 compressor operation
Switch 1st compressor ON
35
20
Off
On
C2
C1
Off
Start/ stop
On
35
0%
10
70
20 25
In the chart above we are defining the Digital Compressor start and stop at the
capacity need and how the compressors load and unload with the PWM from the
controller and the unit setting for temperature control.
Note that the Digital Scroll will run continuously while the head is raised and
lowered as the need for cooling is required from 10% to 100% and vise versa.
Optional Glycool (Econ-O-Cycle) Cooling
When supplied with the Glycool option, the basic unit is supplied with an additional
coil, piping, valve and a Glycol Fluid Sensor (AQ), which is mounted to the unit
supply fluid line and serves as control interface in determining the system
operation. Selection of the glycool or compressorized operation is controlled by
microprocessor using this aquastat to sense the glycol temperature.
The Glycool (Econ-O-Cycle) Cooling program establishes two distinct control
bands for cooling control operation. The first band controls the operation of the
chilled glycol valve and the second controls the operation of the compressors,
either 2-stage or 4-stage.
The microprocessor checks the return air temperature and the entering glycol fluid
temperature to determine a cooling capacity. In order to reduce compressor
cycling and to prevent chilled glycol valve hunting, Glycool (Econ-o-Cycle) cooling
capacity does not become available until the entering chilled glycol fluid
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temperature is at least 8°F below the return air temperature, or 3°F lower than the
return air temperature for two consecutive hours.
When the microprocessor decides that the return glycol fluid temperature is cold
enough the first cooling band is the modulating valve control method, and the
second band, added to the first band, is for the compressors as in the normal
2-Stage or 4-Stage control method. If the chilled glycol fluid temperature is not
cold enough the valve control band is replaced by the compressor band. If the
chilled glycol cooling capacity is reduced by a rise in the glycol fluid temperature,
the control band shrinks proportionally. This allows the compressor band to move
down as well. The following shows the Glycool operation at 100% capacity and
the Glycool at 50% capacity.
Glycool at 100% Capacity – No Dead Band
Temp Set Point + (1/2 Proportional Band + 1/2 Proportional Band)
Temp Set Point: 70°
Proportional Band: 8°
100%
Open
Cool 2 On
Cool 1 On
Valve
Closed
70
71
72
73
74
75
76
77
78
79
Band 1 Glycool Valve
Band 2 Compressors
Increasing Temperature
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Glycool at 50% Capacity – No Dead Band
Temp Set Point + (1/2 Proportional Band + 1/2 Proportional Band)
Temp Set Point: 70°
Proportional Band: 8°
100%
Open
Cool 2 On
Cool 1 On
Valve
Closed
70
71
72
73
74
75
76
77
78
79
Band 1
Glycool
Valve
Band 2 Compressors
Increasing Temperature
Dual Source Cooling
When supplied with the Dual Cooling option, the basic unit is supplied with an
additional coil, piping, valve and a Glycol Fluid Sensor (AQ), which is mounted to
the unit supply fluid line and serves as control interface in determining the system
operation. Selection of the chilled water or compressorized operation is controlled
by microprocessor using this aquastat to sense the water temperature.
The Dual Source Cooling program establishes two distinct control bands for
cooling control operation in the same method as Glycool. The first band controls
the operation of the chilled water valve and the second controls the operation of
the compressors, either 2-stage or 4-stage.
The microprocessor checks the return air temperature and the entering chilled
water fluid temperature to determine a cooling capacity. The chilled water cooling
capacity is considered to be 100% if the entering Chilled Water fluid temperature is
8°F lower than the return air temperature.
When the microprocessor decides that the return chilled water temperature is cold
enough the first cooling band is the modulating valve control method, and the
second band, added to the first band, is for the compressors as in the normal
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2-Stage or 4-Stage control method. If the chilled water temperature is not cold
enough the valve control band is replaced by the compressor band.
Dual Cooling at 100% Capacity – No Dead Band
Temp Set Point + (1/2 Proportional Band + 1/2 Proportional Band)
Temp Set Point: 70°
Proportional Band: 8°
100%
Open
Cool 2 On
Cool 1 On
Valve
Closed
70
71
72
73
74
75
76
77
78
79
Band 1 Chilled Water
Valvel
Band 2 Compressors
Increasing Temperature
An addition program available with the Dual Cooling option is called Minimum
Chilled Water Temperature. This program allows the end user to select the
minimum chilled water temperature that permits simultaneous operation of the
chilled water control and compressor control. When the supply chilled water
temperature decreases to this programmed value ONLY the chilled water valve
control is operational, the compressors are locked out.
Staged Electric Reheat
The basic temperature heating control band is established at the temperature set
point with the length equal to ½ of the programmed temperature proportional band
divided by the number of reheat stages.
The Liebert DS units are supplied with three (3) reheat stages (elements), each
stage is rated at 1/3 of the unit capacity. The three (3) stages will operate in an
on/ off configuration to reheat the unit discharge air as it enters the space.
The temperature controller activates the first electric heating stage when the return
air temperature decreases to 33% of the heating proportional band. The second
electric heating stage activates when the return air temperature decreases to 66%
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of the heating proportional band. The third electric heating stage activates when
the return air temperature decreases to 100% of the heating proportional band.
The temperature controller deactivates the third heating stage when the return air
temperature increases to 66% of the heating proportional control band value. The
second heating is deactivated when the return air temperature increases to 33% of
the heating proportional control band value. The first heating stage is deactivated
when the return air temperature increases to the temperature set point value or
0% of the heating proportional control band value.
3 Stage Electric Reheat – No Dead Band
Temp Set Point - (1/2 Proportional Band)
Temp Set Point: 70°F
Proportional Band: 8°F
Reheat 1 On
Reheat 2 On
Reheat 3 On
65
66
67
68
69
70
Reheat
2 Off
Reheat
1 Off
Reheat
3 Off
Decreasing Temperature
Note: in the above example that the control band begins at the 70°F temperature
set point and has a length of 4°F, which is ½ of the programmed temperature
proportional band value.
As the return air temperature decreases Reheat 1 is activated at 68.7°F or 33% of
the heating control band. If the return air temperature continues to decrease
Reheat 2 will activate at 67.4°F or 66% of the heating control band. If the return
air temperature continues to decrease Reheat 3 will activate at 66°F or 100% of
the heating control band.
When the return air temperature starts to increase, Reheat 3 is deactivated at
67.4°F or 66% of the heating control band, Reheat 2 is deactivated at 68.7°F or
33% of the heating control band and Reheat 1 is deactivated at the temperature
set point of 70°F or 0% of the heating control band.
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3 Stage Electric Reheat – With Dead Band
Temp Set Point - (1/2 Dead Band + 1/2 Proportional Band)
Temp Set Point: 70°F
Proportional Band: 8°F
Reheat 1 On
Dead Band: 2°F
Reheat 2 On
Reheat 3 On
65
66
67
68
69
70
DB
Reheat
2 Off
Reheat
3 Off
Reheat
1 Off
Decreasing Temperature
Note: in the above example that the control band begins at the 70°F temperature
set point and has a length of 5°F, which is ½ of the programmed temperature dead
band value plus ½ of the programmed temperature proportional band value.
As the return air temperature decreases Reheat 1 is activated at 67.7°F or ½ of
the dead band value plus 33% of the heating control band. If the return air
temperature continues to decrease Reheat 2 will activate at 66.4°F or ½ of the
dead band value plus 66% of the heating control band. If the return air
temperature continues to decrease Reheat 3 will activate at 65°F or ½ of the dead
band value plus 100% of the heating control band.
When the return air temperature starts to increase, Reheat 3 is deactivated at
66.4°F or ½ of the dead band value plus 66% of the heating control band. Reheat
2 is deactivated at 67.7°F or ½ of the dead band value plus 33% of the heating
control band. Reheat 1 is deactivated at 69°F or ½ of the dead band value plus
0% of the heating control band.
Remember the temperature dead band value is used by the control to shift the
cooling on/ off operations away from the temperature set point.
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Humidity Control
Humidification and/ or Dehumidification Required, in
Percent (%)
The humidity control programs for the iCOM microprocessor is based on a
calculated percent (%RH) requirement for humidification and/ or dehumidification.
This percent (%RH) requirement is determined by the control type (algorithm)
selected by the user.
The two (2) user selectable humidity control programs are:
• Absolute Humidity, grains of moisture in the air
• Relative Humidity (%RH)
Humidity Control Program Types
Absolute (predictive) Humidity Control – Factory Default Setting
Absolute (predictive) humidity control is based on the moisture content in the
return air. The iCOM microprocessor control automatically adjusts the humidity
control as the return air temperature deviates from the programmed temperature
set point. This calculation converts the return temperature and humidity values to
a moisture content value defined as either grains per cubic foot or grains per
pound. This recalculated content value is compared to the content control band
that is determined by the:
• Programmed temperature set point
• Programmed humidity set point in %RH
• Programmed humidity proportional band in %RH
This automatic adjustment results in a predictive humidity control response. With
absolute humidity control, the humidity control program is automatically adjusted
approximately 2% RH for each degree difference between the return air
temperature and the temperature set point. Note the following example:
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Humidity
Temperature Humidity
Content Level
Proportional
Grains per LB.
Band = 6%
Set Point
Set Point
50%
50%
+3%
-3%
59.2
52.5
75°F
75°F
The Absolute (Predictive) Humidity Control Flowchart shows what the program is
doing and why.
Programmed Values
Temp Set Point
Humidity Set Point
Calculates Band
Compares
Moisture
Content to
Band and
Makes
Humidity Proportional Band
Calculates Content
Present
Room Temperature
Room Humidity
Decision
Humidify
Dehumidify
The program can be analyzed using the Moisture Content Charts supplied in a
later chapter of this manual. It is important to remember that the display provides
the humidity value in %RH, not moisture content. The moisture content (grains)
values are used only in the internal control program calculation. The LCD display
will indicate relative humidity percentage for both methods of control. If the
absolute method of control is selected, the adjusted humidity reading will be
shown.
When utilizing the absolute (predictive) humidity control program feature,
the humidity level is automatically adjusted ~ 2% RH for each degree
difference between the return air temperature and the temperature set point.
When absolute humidity control is used, over dehumidification is avoided in the
space. When overcooling occurs, causing an increase in the relative humidity
reading, the humidity control program “predicts” what the RH will be when the
dehumidification cycle ends and the temperature returns to the programmed set
point. This allows the dehumidification cycle to end at the proper time.
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Relative Humidity Control
Relative humidity control is based on the humidity content in the return air. The
iCOM microprocessor control determines the unit humidification/ dehumidification
operation by comparing the return air humidity value to the control band that is
determined by the:
• Programmed humidity set point in %RH
• Programmed humidity proportional band in %RH
Operations and Charts
The humidity proportional control band value is divided into two parts: the humidity
set point plus ½ of the programmed humidity proportional band for
dehumidification operation and the humidity set point minus ½ of the programmed
humidity proportional band for humidification operation.
A humidity dead band can also be programmed into the control to shift the
humidification and/ or dehumidification on/ off operations away from the humidity
set point.
This programmed humidity dead band value is divided into two parts: the humidity
set point plus ½ of the dead band – no dehumidification operation and the humidity
set point minus ½ of the band – no humidification operation.
The humidity set point range is adjustable from 1 – 80% RH in increments of 1%
RH. The humidity proportional band range is adjustable from 1 – 20% RH in
increments of 1% RH. The humidity dead band range is adjustable from
0 – 50% RH in increments of 1% RH.
Humidifier Operation
The Relative Humidity control program is used to illustrate the humidification
operation in the following examples. The basic humidification control band is
established at the humidity set point with the length equal to ½ of the programmed
humidity proportional band value. The Liebert DS units are supplied with an
infrared humidifier rated at the unit capacity.
The humidity controller activates the infrared humidifier when the return air
humidity level decreases to 100% of the humidity proportional band. The
humidifier makeup water solenoid valve also operates during humidification
operation based on a timing sequence.
The humidity controller deactivates the infrared humidifier and makeup water
solenoid valve when the return air humidity level increases to 50% of the humidity
proportional control band value.
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Infrared Humidification – No Dead Band
Humidity Set Point - (1/2 Proportional Band)
Humid Set Point: 50%
Proportional Band: 8%
Humidification On
45
46
47
48
49
50
Humidification Off
Decreasing Humidity
Note: in the above example that the control band begins at the 50% humidity set
point and has a length of 4%, which is ½ of the programmed humidity proportional
band value.
As the return air humidity decreases the infrared humidifier is activated at 46%RH
or 100% of the humidification control band. When the return air humidity starts to
increase, the infrared humidifier is deactivated at 48%RH or 50% of the
humidification control band.
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Infrared Humidification – With Dead Band
Humidity Set Point - (1/2 Dead Band + 1/2 Proportional Band)
Humid Set Point: 50%
Proportional Band: 8%
Dead Band: 2%
Humidification On
45
46
47
48
49
50
DB
Humidification Off
Increasing Temperature
Note: in the above example that the control band begins at the 50% humidity set
point and has a length of 5%, which is ½ of the programmed dead band value plus
½ of the programmed humidity proportional band value.
As the return air humidity decreases the infrared humidifier is activated at 45%RH
or ½ of the dead band value plus 100% of the humidification control band. When
the return air humidity starts to increase, the infrared humidifier is deactivated at
47%RH or ½ of the dead band value plus 50% of the humidification control band.
Autoflush Control for Infrared Large (IFL) or Small (IFS)
Pans
The Autoflush Water-Level Control software program is an integral part of the
infrared humidifier system. The program automatically controls a water makeup
valve to maintain the proper water level in the humidifier pan during operation.
When a call for humidification exists, the program performs a series of checks.
The first check to see how long the infrared humidifier has been off. If the off time
is equal to or greater than the programmed value (factory default is 15 hours), it is
assumed that the pan is dry and a program called pre-fill is initiated to add water to
the pan. During the pre-fill operation the infrared lamps are inactive. The pre-fill
time is programmable with an adjustable range of 1 to 120 seconds for either pan
size. The factory default for a large (IFL) pan is 60 seconds and for a small (IFS)
pan is 30 seconds.
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If the off time is less than 15 hours (or user programmed value) the pre-fill program
is bypassed and the infrared lamps and water valve are activated at the same time
to fill the pan to the proper water level and initiate humidification.
During normal infrared humidification operation the water makeup valve is
periodically closed (no pan fill) and opened (pan fill) based on a timing sequence
to allow for the evaporation of water from the pan (see flow chart below).
With the humidifier water flush rate set at the factory default value of 150% the
water makeup valve will open for 7 minutes of fill time with an off time of 45
seconds between fill cycles for a small pan. For a large pan water makeup valve
will open for 10 minutes of fill time with an off time of 80 seconds between fill
cycles. The user can modify the percentage from 110% to a maximum of 500% in
1% increments.
Autoflush Control Flow Chart
Call for
Humidification
On in last
15 Hours?
HMV Pre-fill
30 sec – small pan
60 sec – large pan
NO
YES
HMV and Lamps on
4 min – small pan
7 min – large pan
Refill
110% to 500%
Humidification
Lamps only
8 min – small pan
10 min – large pan
Notes:
1. IFL: Infra-red Large and IFS: Infra-red Small
2. Last 15 Hours is programmable from 1-120hours.
3. Pre-fill time is programmable from 1-120 seconds on Large or Small pans
4. Normal Fill is programmable from 1-120 seconds
5. Refill is programmable in 1% increments
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Dehumidification Operation
The Relative Humidity control program is used to illustrate the dehumidification
operation in the following examples. The basic dehumidification control band is
established at the humidity set point with the length equal to ½ of the programmed
humidity proportional band value.
The humidity controller activates dehumidification operation when the return air
humidity level increases to 100% of the humidity proportional band. The humidity
controller deactivates dehumidification operation when the return air humidity level
decreases to 0% of the humidity proportional control band value.
1-Stage Dehumidification, Compressorized Direct Expansion (DX)
Systems
The Liebert DS unit is supplied with two (2) compressors. Under normal
operation, the lead compressor is used for sensible cooling and the lag
compressor is used for either additional cooling or for dehumidification control.
The optional hot gas bypass solenoid valve is de-energized during
dehumidification.
If single compressor dehumidification is selected, the lag compressor is activated
by the humidity controller when the return air humidity level increases to 100% of
the humidity proportional band.
The humidity controller deactivates the lag compressor when the return air
humidity level decreases to 50% of the humidity proportional control band value.
1 Stage Compressorized Dehumidification – No Dead Band
Humidity Set Point - (1/2 Proportional Band)
Humid Set Point: 50%
Proportional Band: 8%
Dehumidification On
50
51
52
53
54
55
Dehumidification Off
Increasing Humidity
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Note: in the above example that the control band begins at the 50% humidity set
point and has a length of 4%, which is ½ of the programmed humidity proportional
band value.
As the return air humidity increases, dehumidification operation is activated at
54%RH or 100% of the dehumidification control band. When the return air
humidity starts to decrease, dehumidification operation is deactivated at 52%RH or
50% of the humidity proportional control band.
1 Stage Compressorized Dehumidification – With Dead Band
Humidity Set Point - (1/2 Dead Band +1/2 Proportional Band)
Humid Set Point: 50%
Proportional Band: 8%
Dead Band: 2%
Dehumidification On
50
51
52
53
54
55
DB
Dehumidification Off
Increasing Humidity
Note: in the above example that the control band begins at the 50% humidity set
point and has a length of 5%, which is ½ of the programmed dead band value plus
½ of the programmed proportional band value.
As the return air humidity increases, dehumidification operation is activated at 55%
RH or ½ of the dead band value plus 100% of the dehumidification control band.
When the return air humidity starts to decrease, dehumidification operation is
deactivated at 53%RH or ½ of the dead band value plus 50% of the humidity
proportional control band.
2-Stage Dehumidification, Compressorized Direct Expansion (DX)
Systems
The basic dehumidification control band is established at the humidity set point
with the length equal to ½ of the programmed humidity proportional band value.
When 2 stage dehumidification is selected, the controller works as follows.
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The humidity controller activates the first stage of dehumidification operation when
the return air humidity level increases to 50% of the humidity proportional band.
The second stage of dehumidification is activated when the return air humidity
level increases to 100% of the humidity proportional band.
The humidity controller deactivates the second stage of dehumidification operation
when the return air humidity level decreases to 50% of the humidity proportional
control band value. The first stage of dehumidification is deactivated when the
return air humidity level decreases to the humidity set point of 50% or 0% of the
humidity proportional band.
If the compressors have unloading capability (4-stage cooling), then the
compressors are activated in the fully loaded condition for each stage of
dehumidification.
2 Stage Compressorized Dehumidification – No Dead Band
Humidity Set Point + (1/2 Proportional Band)
Humid Set Point: 50%
Proportional Band: 8%
Dehumid
Stage 2 On
Dehumid
Stage 1 On
50
51
52
53
54
55
Dehumid
Dehumid
Stage 1 Off
Stage 2 Off
Increasing Humidity
Note: in the above example that the control band begins at the 50% humidity set
point and has a length of 4%, which is ½ of the programmed humidity proportional
band value.
As the return air humidity level increases, first stage dehumidification operation is
activated at 52%RH or 50% of the dehumidification control band. If the return air
humidity level continues to increase the second dehumidification stage actives at
54%RH, which 100% of the dehumidification control band.
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When the return air humidity level decreases to 52%RH or 50% of the
dehumidification control band the second dehumidification stage is deactivated.
When the return air humidity level decreases to the humidity set point of 50% or
0% of the humidity proportional band the first dehumidification stage is
deactivated.
2 Stage Compressorized Dehumidification – With Dead Band
Humidity Set Point + (1/2 Dead Band +1/2 Proportional Band)
Humid Set Point: 50%
Proportional Band: 8%
Dehumid
Stage 2 On
Dehumid
Stage 1 On
50
51
52
53
54
55
DB
Dehumid
Stage 2 Off
Dehumid
Stage 1 Off
Increasing Humidity
Note: in the above example that the control band begins at the 50% humidity set
point and has a length of 5%, which is ½ of the programmed dead band value plus
½ of the programmed humidity proportional band value.
As the return air humidity level increases, first stage dehumidification operation is
activated at 53%RH or ½ of the programmed dead band value plus 50% of the
dehumidification control band. If the return air humidity level continues to increase
the second dehumidification stage actives at 54%RH or ½ of the programmed
dead value plus 100% of the programmed humidity proportional control band.
When the return air humidity level decreases to 53%RH or ½ of the programmed
dead band value plus 50% of the programmed proportional control band the
second dehumidification stage is deactivated. When the return humidity level
decreases to 51%RH or ½ of the dead band value plus 0% of the programmed
proportional control band the first stage dehumidification deactivated.
Reheating during Dehumidification
The Parameter Electric Reheat Enabled defines how the reheats react when the
return air temperature decreases below the temperature set point during the
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dehumidification process. The end user can choose to select from the following
selections:
Parameter Operation
No electric reheat allowed during compressorized
dehumidification operation.
No
Electric reheat operates as normal. A decrease in
Normal
return air temperature below set point will start
reheats as described previously in his chapter.
No low limit reached / low limit reset: heaters
Delayed disabled. Only one of two compressors operating in
dehum or low limit 1 reached: heaters enabled
Normal or Delayed Reheat (2-Stage Dehumidification Only)
When normal reheat (factory default) control is selected, the unit reheats are not
disabled during dehumidification, even if both compressors are operating. As the
return air temperature decreases below the temperature set point the reheats will
stage on and off as described earlier in this chapter.
If delayed reheat is selected and both compressors are operating for
dehumidification control, the reheats are disabled until only one compressor is
required. If, during reheat disable, the return air temperature decreases far
enough below the temperature set point to require 150% total available reheat
capacity, then dehumidification is disabled and reheats are activated.
When the return temperature raises to the point where reheat is no longer
required, then dehumidification operation is re-enabled. However, if the amount of
time that both compressors were operating prior to being disabled by the low
temperature condition was less than 10 minutes, then only one compressor is
allowed to operate for subsequent dehumidification requirements. This prevents
excessive system cycling, which can occur if the room heat load is small. Once
the requirement for dehumidification is no longer present, then both compressors
are enabled.
Caution:
Dehumidification with normal reheat allows for operating both compressors and
reheats simultaneously. It is very important that the electrical service to the unit be
sized and wired for this option if selected. If not sized properly the electrical
service could experience nuisance trips and or possible damage to building circuit
breakers (or Fuses) and wiring.
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Additional Programs
Start
The unit fan is activated. The unit can be switched on/ off from 2 inputs:
1. Remote on/ off input (RSD – Remote Shutdown Device)
2. Display button
Note: Switches 1 and 2 are in series; the unit will start only if both switches are in
the on position. If either switch is in the off position the unit will stop
Display button(s)
Remon/off
Auto restart
When there is a power outage the unit will provide an automatic restart on power
restoration when programmed. The unit will start and the loads will sequence on
with the Fan first, the first Cooling need and so forth until all loads are on as the
room requirement demands.
The Unit Auto Restart Sequence (customer programmable) takes place. Each
unit will restart by this program, however, with a network of units, the start loop will
start the next unit at each individual time when elapsed beginning with unit number
ID #1. The unit control start sequence will start at this point as well.
Power on
Unit 1
on
Unit 2
on
Unit 3
on
Unit 4
on
Autorestart Autorestart Autorestart Autorestart
Control 1
on
Control 2
on
Control 3
on
Control 4
on
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Fan Alarm / Fan settings
The fan operation is controlled by two (2) digital devices: the Loss of Airflow
differential pressure switch and the Main fan Overload motor protection. The
time delay at the unit start is always 5 seconds shorter than the control delay.
High Pressure Cutout
The control uses high head lockout functionality. If one compressor trips or is
locked out on high head, the other compressor turns on when the space
temperature increases 1°F. Pressing the alarm button on the display twice can
reset high head Alarm. A lockout condition occurs on the third trip and must be
reset by turning the main power switch to off then back on.
Suction Pressure Transducer
The suction pressure transducer operation is only on air conditioning products (not
chiller applications). Transducer measurements are made at least once every 1
second. With all other operating times for all compressors, additional
measurements, shall be taken based on operation “at limit conditions” for 5
seconds and shall not include readings taken during Pumpdown or Winter Start
Kit (WSK) timeout.
Call for Cooling
The following applies for both R22 and R407C systems and applies to all
compressor types. The call for cooling opens the Liquid Line Solenoid Valve
(LLSV). Note: on units with Digital Scroll Compressors the unloader is energized
0.1 second before the compressor contactor is energized. On air-cooled units with
fan speed type condenser (FSC) the low pressure start threshold is 35psiG
(50psiA). On air-cooled units with lee-temp control (LT) and all fluid cooled
units the low-pressure start threshold is 60psiG (75psiA).
All compressorized units use the following start
sequence:
Open LLSV, if WSK is set to 0, wait for suction pressure to reach setting, then start
compressor and freeze protection timer.
If WSK is set greater than 0, operate the compressor for the WSK override time
and monitor suction transducer value.
If pressure is achieved the compressor is allowed to operate, and the freeze
protection timer is started.
If pressure is not achieved, turn compressor off and leave LLSV open.
If pressure is achieved within next 30 seconds the compressor is allowed to
operate, and the freeze protection timer is started.
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The Startup and Freeze Protection Program
The sequence for the call for cooling with the program features is as follows:
The need for cooling is defined by the control setting for the temperature setpoint,
proportional band, and deadband (if used). At this point the Winter Start Kit (WSK)
time delay is the wait period for the compressor to run without the indication of the
low-pressure condition (also known as LP bypass). The WSK time delay is
programmable with a range of 0 - 5 minutes. If the LP switch setting is achieved in
this time then full cooling is in process with the Freeze Protection (FP) now
watching the LP for an additional 10 minutes (fixed). If the LP remains closed the
cooling process continues.
If the WSK is not made in the set time period the cooling process stops and waits
an additional 5 minutes with the compressor off (no pumpdown). The liquid line
solenoid valve will remain open during this time period. If the LP switch is made
the control will now advance and wait for the freeze protection time delay as stated
as above. If the LP switch does not prove in the WSK time delay period plus the 5
minute wait period, the compressor is locked off and the Low Suction Pressure
Alarm will activate. A power off/ on reset is required to reset the cooling function.
If the WSK is made and the control is in the 10 minute Freeze Protection (FP) wait
time period and this function does not prove the LP the control will go into
additional 10 minute wait (fixed), with the compressor off (no pumpdown) and the
liquid line solenoid valve to remain open. If the freeze protection does not make
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during the second time frame the cooling process locks off and will require a
power off sequence.
Next Maintenance Calculation
Foreword
The next maintenance calculation will help run the Liebert Environmental unit in an
optimum way, to ensure minimum components stress resulting in increased
reliability.
Calculation of next Maintenance Parameters
The following components are included in the calculation individually:
• Fan(s)
• Compressor 1
• Compressor 2
• Electric Heaters
• Humidifier
For each individual component the next maintenance will be calculated from
following parameters:
1. Standard service interval (1, 2, 4 or 6 times a year, to be programmed).
2. Working hours (counted).
3. Number of starts (counted).
4. Average running time (calculated).
5. Optimum number of starts per hour (to be programmed).
6. Maximum number of starts per hour (to be programmed).
7. Maximum bonus to enlarge time to next maintenance (to be programmed).
8. Maximum penalty to reduce time to next maintenance (to be programmed).
The Maintenance Calculation is done as follows:
Basic: maintenance frequency (1). The control counts the working hours of the
component, as well as the number of starts.
The working hours and the number of starts are compared with the programmed
optimum / maximum starts per hour. This results in “Wellness Factor”.
This factor, in accordance to the service interval, will add a “Bonus” to increase the
time before the next maintenance, or will add a “Penalty” to decrease the time
before the next maintenance. In simple words: If a component starts very often,
the time to next maintenance will be decreased, if it starts rarely, the time to next
maintenance will be increased.
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The control always takes the component with the most on/ off (cycling) as the
reference component, which asking for the nearest maintenance (example: if the
fan runs continuously, but the compressor switches on/off all the time, the next
maintenance will be calculated from the compressor).
Alarms or warnings (like clogged filter, high or low pressure, fans alarm etc.) will
decrease the time to next maintenance immediately to 0. If the alarm was reset,
the original situation will be displayed again, but the alarm will be counted in the
diagnostics window.
The display’s main window provides information about the next maintenance:
a bar graph (graphical display screen) will fill in, as the next maintenance gets
closer (the width of the graph equals to the standard maintenance Interval (1, 2, 4
or 6 times a year). The date of the next maintenance is also displayed.
Parameters for next Maintenance Calculation:
General Maintenance Settings:
Maintenance Frequency: can be set at 1, 2, 4 or 6 times a year. “NO” means
the maintenance calculation program is disabled.
Maximum Bonus: this value increases the time to next maintenance with the set
value, if all components run in optimum way (number of starts, average running
time).
Maximum Penalty: this value decreases the time to next maintenance with the
set value, if some components run in non-optimum way (number of starts, average
running time).
Last Maintenance: this date can be will be set by the calculations and the
service-engineer and others to view.
Service-Engineer: name can be added and edited.
Reset: puts all counters of all components (fans, compressors, ect.) to 0, and
starts new maintenance calculation (always reset after maintenance is completed).
Fans / Heaters / Humidifier Settings / Compressor 1 /2 Settings
Number of starts and Working hours: counted from the last maintenance. Total
working hours can be read in the standard working hours window (customer
window).
Average Working Hours: calculated by the number of starts and working hours
of each component.
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Starts per Day Optimum: the number of individual component starts that is
considered as good or optimum. To be set by Service Engineer.
Starts per Day Worst: the number of individual component starts that is
considered as “hunting” or worst case. To be set by Service Engineer.
Number of Alarms: counts the number of alarms occurring between service
intervals.
Actual Bonus: calculated from “number of starts” and “average working time”
values. The result can be positive (for a bonus) or negative (for a penalty). This
value influences the time remaining to the next maintenance.
Shared Parameters an understanding
If we have multiple units in the same room (zone) they will need to communicate
with each other to avoid opposite operational functions. This will prevent the
cooling and heating functions from operating at the same time on different units.
This condition called “fighting “ often exists in the room due to imbalanced loads
and the crossing of airflow conditions. This is also considered when using the
Lead/ Lag and Cascade functions.
When a system is setup the parameters are shared by all units. The unit selected
as the Lead Unit (#1 unit) is used to program the system, if program parameters
are not set in this unit they will be ignored. This is true for all of the active units in
the system. However, if a unit in the system is not active it will be ignored until it is
active and the parameters will be shared within 2 minutes of activation.
Shared Temperature and Humidity parameters example:
Two units share the master Temperature Control (1/2) Proportional Band Setting
such as 10°F, and then each unit will use the master band divided by 2 (units) or
5°F proportional bands. To avoid the cooling hunting process or compressor
cycling too quickly, the primary temperature proportional band needs to be set
wide enough to compensate for the number of units in the system setup. Note that
shared parameters are not used on single unit applications.
Heating, humidification, and dehumidification will follow the same example with
each function starting in each unit one after the other or in sequence.
In Chilled Water units all valves operate are in parallel but this operation may be
overridden by the setting and use of the Supply Limit sensor. This parameter is
controlled by the individual unit. Here we may see uneven valve positioning
(operation) in some of the units.
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Freecooling and Dual cooling will operate in the same manner as chilled water
with the supervision of the Supply Limit, again showing different valve positions on
the units
If in a Freecooling or Dual Cooling unit if the limit of the coil operation is detected
(no free cooling or no CW available) the valve will close off and unit will become
DX operation in the system.
Networking and Functions
Unit 2 Unit (U2U) Communications by networking will allow the following
functions to be placed into operation when the requirements exist. The user
must install the correct hardware and properly program the units for the
functionality.
In the iCOM Network the owner may perform the following functions:
The Teamwork Mode functions, which allow multiple stages of Cooling/ Heating
and/ or Humidification/ Dehumidification. The ability to prevent the units fighting is
included in this feature.
The Lead/ Lag function, which allows one or more units to be set as “Running and
Standby” for activation in case of an alarm. This also has the ability to be
programmed in a rotation for assurance of functional standbys.
The Cascade function, which allows additional units to be staged on based on the
temperature or humidity requirement.
Understanding the iCOM Network setup process:
To setup a system network with the iCOM control requires a complete
understanding of the control processes and parameter programming to insure the
proper functional operation without incident. To insure the setup is correct and
that the operation will function as selected you need to map both the room layout
and the unit setup. First, read and record all programmed settings in all of the
single units. Second, document the network parameter settings that are needed
and identify the numerical order of the units to be networked. The order of the
setup process is very important.
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The Basics for Cooling Unit Placement:
Installation instructions are found in the product manuals for the Cooling units.
Networking setup should include these additional factors for planning.
• Locations of heat loads in conditioned space.
• Air distribution for cooling.
• Number of operating units versus standby.
The Basics for Hardware:
Multi-unit networking requires the following hardware:
Minimum Network Switch Requirements:
• IEEE 802.3, IEEE 802.3u
• 10/100 Mbps speed
• Multiple RJ-45 ports – one shared RJ45 uplink
CAT 5 patch cables (straight through) in the proper lengths not to exceed
150 ft. maximum length each. One for each board and display added into
the iCOM network. Cable management will apply.
The Basic for Programming:
An IP address number will be used to identify each receiver/ sender of information.
(See Computer and Network Terms in Training and Service Manual)
The iCOM Network is a Class C Private Network and will use the 192.168.254.xxx
series of static IP address. This has nothing to do with the local building or owner
network. The iCOM Network may only be attached to these networks through a
WEB Card or 485 Card using the Liebert Intellislot.
A series of basic rules must be followed to connect and program the units for this
private iCOM Network. See the following rules.
1. Small Displays are CAN connections only, programming of single unit
parameters is required.
2. Small Displays CANNOT look at or program other iCOM Network functions.
3. Small Displays may be networked with a CAT 5 crossover cable (2 units).
4. All Large Displays and Control Boards will use a CAT 5 or greater straight
through (patch) cables to connect to the switch.
5. One large Display (Wall Mount) with a separate power adapter may be used
with multiple units (Control Boards and Small Displays) through the network
switch.
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6. Each set of unit control boards must be set up individually, then connected to
the network switch and checked before the next board can be setup
6a. Large Displays and Control Boards must each be programmed with a
different IP Address.
Example: Display: 192.168.254.001
Example: Control Board: 192.168.254.010
6b. Each Display and Control Board in the iCOM network must have the
same Gateway IP address.
Example: Gateway IP: 192.168.254.75
6c. Each Display and Control Board in the iCOM network must have the
same Netmask IP address.
Example: Netmask IP = 255.255.255.000
6d. The Unit to Unit (U2U) address must be programmed in the necessary
order for setup.
Example: Unit Display: 33 – 64 and Unit Control Board: 1 - 32
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Setting Parameters
Example: 2 Units with Small Display’s
All Network parameters are viewed and programmed using the
Service Menu function and by selecting the Network Setup Icon
The following example references menu lines on the Network Setup screen:
Line S802: Number units connected: xx (2)
Line S803: Teamwork: xx (No, 1, 2)
Line S804: Control Board IP Address: 192.168.254. xxx (010, 011)
Line S805: Control Board Netmask IP the same for all units
Line S806: Control Board Gateway IP the same for all units
Line S808: U2U address Control Board #: xx (1-2)
Line S810: U2U group #: xx (1)
U2U: CAT5 (Crossover-cable)
Unit No. 1
Unit No. 2
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Example: 2 Units, One Large Display and One Small Display
All Network parameters are viewed and programmed using the
Service Menu function and by selecting the Network Setup Icon
The following example references menu lines on the Network Setup screen:
Line S802: Number units connected: xx (2)
Line S803: Teamwork: xx (No, 1, 2)
Line S804: Large Display Board IP Address: 192.168.254. xxx (001 - 049)
Line S804: Control Board IP Address: 192.168.254. xxx (050 - 099)
Line S805: Large Display Board Netmask IP: 255.255.255.000
Line S805: Control Board Netmask IP: 255.255.255.000
Line S806: Large Display Board Gateway IP: 192.168.254.255
Line S806: Control Board Gateway IP: 192.168.254.255
Line S808: U2U address Display #: xx (33 - 64)
Line S808: U2U address Control Board #: xx (1 - 32)
Line S810: U2U group #: xx (1 - 99)
CAT5 (Patch-cable) and
(CAN)
Power
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Example: Large Wall Display and Five Units with Small Displays
All Network parameters are viewed and programmed using the
Service Menu function and by selecting the Network Setup Icon
The following example references menu lines on the Network Setup screen:
Line S802: Number units connected: xx (01 - 32)
Line S803: Teamwork: xx (No, 1, 2)
Line S804: Large Display Board IP Address: 192.168.254. xxx (001 - 049)
Line S804: Control Board IP Address: 192.168.254. xxx (050 - 099)
Line S804: Wall Mount (LBB) IP Address: 192.168.254. xxx (100 - 149)
Line S806: Large Display Board Gateway IP: 192.168.254.255
Line S806: Control Board Gateway IP: 192.168.254.255
Line S808: U2U address Display #: xx (33 - 64)
Line S808: U2U address Control Board #: xx (01 - 32)
Line S810: U2U group #: xx (01 - 99)
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Example: 4 Units in 2 Groups with 2 Large Displays
All Network parameters are viewed and programmed using the
Service Menu function and by selecting the Network Setup Icon
The following example references menu lines on the Network Setup screen:
Line S802: Number units connected: xx (01 - 32)
Line S803: Teamwork: xx (No, 1, 2)
Line S804: Large Display Board IP Address: 192.168.254. xxx (001 - 008)
Line S804: Control Board IP Address: 192.168.254. xxx (010 - 080)
Line S806: Large Display Board Gateway IP: 192.168.254.xxx (000 – 254)
Line S806: Control Board Gateway IP: 192.168.254.xxx (000 – 254)
Line S808: U2U address Display #: xx (33 - 64)
Line S808: U2U address Control Board #: xx (01 - 32)
Line S810: U2U group #: xx (01 - 99)
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Teamwork
Teamwork Modes
Teamwork is the ability to group unit functionality, while connected in a network, to
provide the ability to work together as a team and address control functions in
three different teamwork modes:
“No” Teamwork
In this mode all units are working independently for control and functionality. No
values or sensors are shared. While in this mode units may be setup to provide
the Lead/ Lag function and rotation, however, units may not be setup in the
Cascade functionality.
Teamwork Mode 1
In this mode unit parameters (system settings) are shared if the system value is
set in any of the units, all units will follow with same settings. (See Glossary of
Unit and System parameters section).
The return air temperature and humidity sensed by each unit in the network will be
averaged and used for control by the lead unit.
The Lead Unit designation #1 and will provide the calculations for the system
requirements and will provide the calculated divisions of the proportional band to
each of the units to start the required operations. The width of the proportional
band in multiple unit configurations is shown as normal, but internally the lead unit
(unit #1) sends the requests to the other units and multiplies this width by the
number of available units in the program.
To be an available unit for operations in this mode:
a) The unit cannot be in a standby (lead/lag) configuration: all units must be on
b) The units in the cascade function are not off or set with alarms functions to
be switch off.
This mode of control will drive all Chilled Water or FreeCooling actuators in parallel
for all units operating in the teamwork mode. The individual unit will control its
own Dual Cooling switchover functions, the low temperature functions and low
discharge air functions.
Teamwork Mode 1 will rotate the lead unit by 1 unit every 24 hours.
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Teamwork Mode 2
In teamwork mode 2 all system parameters are shared equally as in teamwork
mode 1. The lead unit will define the temperature and humidity averages for the
operational needs if there is a request for cooling, heating, dehumidification or
humidification.
If there is a temperature control request because of a need for either cooling or
heating (determined by highest or lowest temperature of all the units), teamwork
mode 2 activates all of the connected units. Each unit will operate in the cooling or
heating mode using their individual temperature control settings. If in the cooling
mode the heating function is disabled in all units. If in the heating mode the
cooling function is disabled in all units.
If there is a humidity control request because of a need for either humidification or
dehumidification (determined by highest or lowest humidity of all the units),
teamwork mode 2 activates all of the connected units. Each unit will operate in the
humidification or dehumidification mode using their individual humidity control
settings. If in the humidification mode the dehumidification function is disabled in
all units. If in the dehumidification mode the humidification function is disabled in
all units.
Teamwork Mode 2 does not allow unit rotation (lead/ lag), unbalanced unit working
hours are to be expected.
Unit Lead/ Lag or Running/ Standby Function
This program will allow the user to select the multi-unit function of Lead and Lag,
or as sometimes stated Running and Standby, by selecting the number of running
and standby units to provide the redundancy needed in the space.
Typical Lead/ Lag (Running/ Standby) Function
The lead/ lag operational sequence has a lead (running) unit operating and an
alarm becomes active (selected by alarm programming). The active alarm in the
lead unit will cause the first lag (standby) unit to active and maintain the space
conditions. If multiple units are selected as lag (standby) the units will continue to
rotate on active alarms as long as a lag unit is available. If there are no lag
(standby) units left in the sequence the first failed will restart (if not in a critical
alarm state i.e. fan overload, etc).
Note: The unit with the active alarm will operate in the fan only mode for 3
minutes before going into a standby mode to stabilize conditions, then it will turn
off.
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The Lead/ Lag function may be used in the either the No Teamwork Mode, in
Teamwork 1 Mode and in Teamwork 2 Mode. One or more units can be defined
as lag (standby), the normal status of the lag (standby) unit(s) is off.
The lag or standby function can be performed as a daily rotation (setting the time),
weekly rotation (setting the day of the week and time) or as a monthly rotation.
The units will rotate based on the programmed number of units:
Example A: if the rotation is set in the “Rotate by 1” parameter, the standby units
will rotate from 1 to 2 or 2 to 3 or 3 to 4 or 4 to1 in a basic 4 unit configuration.
Example B: if the rotation is set in the “Rotate by 2” parameter, the standby units
will rotate from 1 - 2 to 3 - 4 or 3 - 4 to 1 - 2 in a basic 4 unit configuration.
Standby & Cascade
This program function will activate the lag (standby) unit(s) when an active alarm
in a running unit is detected. This program parameter will also provide for unit
staging. With an increase or decrease in either the temperature and/ or humidity
conditions is sensed in the operating units the additional standby unit(s) will be
activated to aid in the control of the space requirements.
The Cascade function operates in Teamwork Mode 1 only. The Cascaded units
are not part of the system temperature and humidity average.
Settings are:
Cascade Active
Yes/ No
Yes/ No
Temp
Cascade Cool/ Heat and Humid./ Dehumid.
Cascade for Cooling and Heating
Cascade for Cooling only
Cool
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Notes:
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Chapter 2
Programming Functions
The standard iCOM control is supplied with a front panel mounted small display
screen display which features a 128 x 64 dot matrix graphics. The display
provides both descriptive text readouts and two (2) menu icons. The optional
large screen display features a 320 x 240 dot matrix graphic display that shows
user and service icons as well as descriptive text and graphics. The information
provided visually on either of these displays is: room temperature and humidity,
temperature and humidity set points, alarm status and settings, event histories and
the current time. All programming functions will be done through the supplied
display.
Small Graphic Display
with Panel Mount Bezel
Optional Large Graphic
Display with Panel
Mount Bezel
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iCOM Display Components and Functions
The large display is shown for reference. The keypad and LEDs are identical on
all displays.
Liquid Crystal display
LED Status Indicators
Top LED is red or flashing red - alarm,
Bottom LED is amber (power on) or green (unit on)
Keypad
iCOM Keyboard Layout:
The iCOM control screen displays text and icons for monitoring and programming
your Liebert unit and/ or network of units. The number of icons and the amount of
text shown depends upon the display type supplied on your unit. From the default
menu, the user menu may be accessed by pressing the enter key. When the user
selects an icon the various submenus, set points, status, thresholds and service
information is displayed. The following defines the various keyboard icons and
functions.
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iCOM Keyboard Layout:
Icon
Key Name Function
On/ Off Key
Alarm Key
Help Key
Controls the operation state of the unit.
Silences the audible alarm.
Accesses the integrated help menus.
ESCape Key Returns to the previous display.
Enter Key Confirms all selections, icons and text.
Increase Key Moves upward through the menu or increases the
(Up Arrow) value of the selected parameter.
Decrease Key Moves downward through the menu or decreases
(Down Arrow) the value of the selected parameter.
Navigates through text and selections of the
Left Arrow Key
display.
Right Arrow
Key
Navigates through text and selections of the
display.
Blinking Red: Active, unacknowledged alarm
exists.
Upper LED
Lower LED
Solid Red: Active, acknowledged alarm exists.
Amber: Power available to the unit, unit NOT
operating.
Green: Power available to the unit, unit is
operating.
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iCOM Display Symbols/ Icons
fan
hot water
horn
compressor
el. heaters
freecooling
maintenance
dehum
hum
The iCOM programming functions are separated into three (3) basic menus:
• User Menu
• Service Menu
• Advanced Menu
When the desired icon has been selected, press the enter key. If the selected
menu item has submenus, they are now revealed. If there are no submenus, the
function or setting or command level text is displayed. User and Service menu
settings are readable without a password, changing the programmed values
requires a password. When a password is required to perform a programming
function, the iCOM displays a password prompt. Advanced menu setting requires
a password to read and program.
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Programming Functions
Status Display
The unit display will show the unit operational mode(s), return air temperature/
humidity readings and if active present alarm conditions. The end user can select
from two (2) display types, graphical or simple.
System View Screen Graphic
Unit View Screen Simple
The Large and Small Display’s have the ability to present information in two
formats; the Graphic format will show the set points and/or the actual values of
the return air temperature and humidity readings. The operational functions of the
components are displayed with an icon and a bar graph to indicate to amount of
the required function. The bottom of the screen will indicate date, time, on/off
status and events. The message area below will provide additional information and
provide some basic navigation help. The Simple format will reduce the amount of
graphics displayed and offers a not so busy display of the same information. The
displays will provide the System and Unit views
The end user can also select from dark background with white text or light
background with dark text.
Graphic Screen with reversed Contrast
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Menu Screens ICON Symbols
Menu Parameters Names
Level 1: User
Level 2: Service
Level 3: Advanced
Readable w/o password
PW required to program
Readable w/o password
PW required to program
PW required to read
or program
1
2
Setpoints
Setpoints
Unit Diary
Factory Settings
Spare Parts List
3
Events Log/ Status Report Standby Settings/ Lead-Lag
4
Graphics
Maintenance/ Wellness Settings
Diagnostics/ Service Mode
Set Alarms
5
View Network
Set Alarms
6
7
8
Change Passwords
9
Various Sensors
Sensor Calibration/ Sewtup
10
11 Display Setup
System/ Network Setup
Options Setup
12 Total Run Hours
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User Menu Icons and Descriptions:
Available
Display
Icon
Name
Descriptions
°C/ °F
% RH
SET
To view and change temperature
and humidity set points
Small and
Large
Set Points
Spare Parts
List
Displays the spare parts list of the
unit
Large
EVENT
LOG
Contains a log of the last 400
events
Small and
Large
Event Log
Graphic Data Displays the temperature and
Small and
Large
Record
humidity graphs
Shows the status of all connected
units
View Network
Large
Allows the enabling, disabling and
setting of the alarm parameters
Small and
Large
Set Alarms
Shows readings for the standard
and optional sensors
Small and
Large
Sensor Data
Change the settings for display,
Display Setup language, time and simple or
graphic display
Small and
Large
Records the run time of all
Total Run
Small and
Large
components and allows for
Hours
setting the limits on run time
Allows for setback programming
Sleep Mode
Small and
Large
for non-peak operation
Contains key contact information
Service
for local service, including names
Contacts
Large
and phone numbers
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Service Menu Icons and Descriptions:
Available
Display
Icon
Name
Descriptions
°C/ °F
% RH
SET
To view and change temperature
and humidity set points
Small and
Large
Set Points
Is a notepad containing notes
from the service person or
customer
Unit Diary
Large
Programs lead/ lag setup when
multiple units are connected
together
Standby
Settings
Small and
Large
Allows programming of the
Maintenance/ maintenance interval reminder,
Small and
Large
Wellness
Settings
maintenance messages, number
of unit starts and stops, time
since last maintenance
Allows for troubleshooting,
manual mode and viewing of the
analog and digital inputs
Diagnostic/
Service Mode
Small and
Large
Allows the enabling, disabling and
setting of the alarm parameters
Small and
Large
Set Alarms
Sensor
Calibration/
Setup
Allows for the calibration of the
various sensors
Small and
Large
System/
Allows for setup and unit-2-unit
Large
Network Setup communication for multiple units
Allows for the setup of component
Small and
Large
Options Setup
operation
Contains key contact information
Service
Small and
Large
for local service, including names
Contacts
and phone numbers
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Advanced Menu Icons and Descriptions:
Available
Display
Icon
Name
Descriptions
Factory configuration files. Do
Not Change Settings Consult
the Factory First
Factory
Settings
Small and
Large
Change
Passwords
Allows the user to change the
various passwords
Small and
Large
Menu Parameters
All of the various parameters and program ranges are shown in tables located in
this chapter. The following sections highlight the various parameters and
programs in the iCOM control.
User Menu Parameters
The User menu displays the various unit operating values and status icons. The
factory default password to access the user menu items for programming is “149”.
The User Menu selections include the following choices in the order shown:
•
•
•
•
•
•
•
•
•
•
•
•
Set Point Parameters
Spare Part List
Event Log
Graphics Log Parameters
View Network Parameters
Set Alarm Parameters
Sensor Parameters
Active Alarms
Display Setup Parameters
Total Run Hours
Sleep Mode Timer Parameters
Service Contacts Information
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User Menu: Set Point Parameters U100 series
Menu Line
U101
U102
U103
U104
U105
U106
U107
U108
U109
U110
U111
Parameter
Password
Default
-
Range
-
Temperature Setpoint
Humidity Setpoint
73ºF
50%
41 - 104ºF
1 – 80%
Humidity Control Type
Supply Limit
Yes
Yes or No
Disabled or Enabled
41 - 77°F
Disabled
41°F
Supply Limit Temp Value
User Menu: Spare Parts List, Large Display Only
Parameter
Unit spare parts list
User Menu: Event Log
Parameter
Stores the last 400 events (messages, warnings and
alarms a that have occurred
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User Menu: Graphics Parameters
Parameter
Default
Range
8, 32 min or 1, 12, 24 hours
or 2, 4, 8, 16 days
System Temperature Time Scale
System Temperature Graph Height
System Humidity Time Scale
System Humidity Graph Height
Unit Temperature Time Scale
Unit Temperature Graph Height
Unit Humidity Time Scale
24 Hours
9ºF
±36ºF
8, 32 min or 1, 12, 24 hours
or 2, 4, 8, 16 days
24 Hours
10%
±20%
8, 32 min or 1, 12, 24 hours
or 2, 4, 8, 16 days
24 Hours
9ºF
±36ºF
8, 32 min or 1, 12, 24 hours
or 2, 4, 8, 16 days
24 Hours
10%
Unit humidity Graph Height
±20%
User Menu: View Network Parameters
Parameter
User to select and view status of all units connected
together (only Large Display)
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User Menu: Set Alarm Parameters U200 series
Menu Line
U201
U202
U203
U204
U205
U206
U207
U208
U209
U210
U211
Parameter
Password
Default
-
Range
-
Return Sensor Alarms
High Return Temperature
Low Return Temperature
High Return Humidity
Low Return Humidity
Enabled
80ºF
Enabled or Disabled
33 - 210ºF
33 - 210ºF
1 – 99%
60ºF
60%
40%
1 – 99%
Sensor A Alarms
Disabled
90ºF
Disabled or Enabled
33 - 210ºF
33 - 210ºF
1 - 99%
High Temperature Sensor A
Low Temperature Sensor A
High Humidity Sensor A
Low Humidity Sensor A
55ºF
70%
30%
1 - 99%
User Menu: Sensor Data U300 series: Page 1 of 2
Menu Line
U301
U302
U303
U304
U305
U306
U307
U308
U309
U310
Parameter
Range
41 – 104ºF
20 – 80%
32 - 122ºF
20 – 80%
32 - 122ºF
20 – 80%
32 - 122ºF
20 – 80%
4 - 113ºF
Actual Temperature Setpoint
Actual Humidity Setpoint
Optional Sensor A Temperature
Optional Sensor A Humidity
Optional Sensor B Temperature
Optional Sensor B Humidity
Optional Sensor C Temperature
Optional Sensor C Humidity
Freecooling Fluid Temperature
DigiScroll 1 Temperature
DigiScroll 2 Temperature
Freecooling Status
84 - 313ºF
84 - 313ºF
Off, Start, On
U311
U312
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User Menu: Sensor Data U300 series: Page 1 of 2
Menu Line
U313
Parameter
Daily High Temperture
Daily Low Temperature
Daily High Humidity
Daily Low Humidity
Time/ Value
U314
U315
U316
User Menu: Active Alarms Parameters
Parameter
User to view all active alarms of all units connected
together (only Large Display)
User Menu: Display Setup Parameters U400 series
Menu Line
U401
Parameter
Language
Default
Range
English . . .
MM/ DD/ YYYY
HH/ MM/ SS
ºF/ ºC
English
U402
Date (Month/Day/Year) MM/ DD/ YYYY
U403
Time (Hrs:Min:Sec)
Temperature Indication
Display Contrast
-
ºF
U404
U405
80%
0 – 100%
U406
Buzzer Frequency
On at 80%
On, Off, 0 – 100%
Backlite Off After x
Hours
U407
5 minute
5 min – 12 hours
U408
U409
U410
Screen
Simple
Set + Act
Normal
Simple or Graphical
Set + Act, Set, Act
Normal or Inverted
Display Shows
Display Colors
yyyy-mm-dd
dd.mm.yyyy
mm/dd/yyyy
U411
Date Format
dd.mm.yyyy
64
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User Menu: Total Run Hours Parameters U500 series
Menu Line
U501
U502
U503
U504
U505
U506
U507
U508
U509
U510
U511
Parameter
Range (Hours)
Actual
-
Fan motor(s)
0 - 32000
0 - 32000
0 - 32000
0 - 32000
0 - 32000
0 - 32000
0 - 32000
0 - 32000
0 - 32000
0 - 32000
Compressor 1
Compressor 2
Chilled Water/ Free Cool
Hot Gas / Hot Water
Electrical Heater 1
Electrical Heater 2
Electrical Heater 3
Humidifier
Dehumidification
User Menu: Sleep Mode Parameters U600 series
Menu Line
U601
Parameter
Password
Default
Range
-
-
-
-
U602
Sleep On
Mon, Tue, Wed, Thu,
Fri, Sat, Sun
U603
No
No or Yes
U604
U605
U606
U607
U608
U609
U610
U611
Sleep Every Day (1)
From / To
-
-
00:00 / 00:00
-
Time (hh:mm)
-
Sleep Every Day (2)
From / To
00:00 / 00:00
Time (hh:mm)
Timer Mode
No
System Off
4ºF
No, Yes, Auto
Sys off, Deadband
4 - 27ºF
Timer Mode Type
Dead Band
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User Menu: Service Contacts U700 series
Menu Line
U701
Parameter
Range
U702
U703
Address Line 1
Address Line 2
Address Line 3
Address Line 4
Text String
Text String
Text String
Text String
U704
U705
U706
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Service Menu Parameters
The Service menu display allows the user to customize the various unit settings for
site specific operation. The factory default password to access the service menu
items for programming is “501”. The Service Menu selections include the following
choices in the order shown:
•
•
•
•
•
•
•
•
•
•
Set Point Parameters
Unit Diary
Standby Settings Parameters
Maintenance / Wellness Setting Parameters
Diagnostic / Service Mode Parameters
Set Alarm Parameters
Sensor Calibration / Setup Parameters
System / Network Setup Parameters
Operations Setup Parameters
Service Contacts Parameters
Service Menu: Set Point Parameters S100 series: Page 1 of 2
Menu Line
S101
S102
S103
S104
S105
S106
S107
S108
S109
S110
S111
Parameter
Default
-
Range
-
Password
Temperature Setpoint
Humidity Setpoint
73ºF
50%
Yes
Disabled
41ºF
Yes
7ºF
41 - 104ºF
1 – 80%
Humidity Control Type
Supply Limit
Yes or No
Disabled or Enabled
41 - 77ºF
Supply Limit Temp Value
Autoset Enable
Yes or No
2 - 54ºF
Temperature Proportional Band
Temperature Integration Time
Temperature Deadband
Short Cycle Control
0
0 – 5 minutes
0 - 36ºF
0
Yes
Yes or No
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Service Menu: Set Point Parameters S100 series: Page 2 of 2
Menu Line
S112
Parameter
Default
Range
-
Password
-
10%
0
S113
Humidity Proportional Band
Humidity Integration Time
Humidity Deadband
1 – 20%
0 – 5 minutes
0 – 50%
S114
S115
0
Disable, Contact,
Value
S116
DT Between Room / FC Type
Disable
S117
S118
S119
S120
S121
S122
DT Between Room Air / FC Fluid
Minimum CW Temp
8ºF
Disable
45ºF
0 - 36ºF
Enable / Disable
32 - 68ºF
Minimum CW Temp Value
Service Menu: Unit Diary Log
Parameter
Displays changes to the unit as performed and entered by
the service person or customer
68
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Service Menu: Standby Setting / Lead-lag Parameters S500 series
Menu Line
S501
Parameter
Default
Range
-
Password
-
S502
Number of Standby Units
Rotation Frequency
0
0 – 15
No, Daily, Every M,
T, W, Th, F, S, Su
S503
No
S504
S505
S506
S507
Rotate at (hour)
Rotate at (minute)
Rotate by
0
0
1
-
0 – 23
0 – 59
1 – 8
Perform one rotation
No or Yes
No, Yes, Cool,
Temp
S508
Cascade units
No
No
S509
S510
S511
Start All Standby Units by HT
No or Yes
Service Menu: General Settings Maintenance / Wellness Parameters S000
series: Page 1 of 8
Menu Line
Parameter
Default
Range
S001
Password
-
-
0 – 12 per
year
S002
Maintenance Frequency Per Year
1
S003
S004
S005
S006
S007
S008
Max Bonus
0
0
-
0 – 12
0 – 12
Date
Max Penalty
Last Maintenance
Service Engineer
Confirm PM
-
Name
-
No or Yes
Date
Calculated Next Maintenance
-
69
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Service Menu: Fan Settings Maintenance / Wellness Parameters: Page 2 of 8
Menu Line
S012
Parameter
Password
Default
Range
-
-
-
S013
Number of Starts
Run Hours
0 – 32000
0 – 32000
0 – 999 minutes
1 – 240
S014
-
S015
Average Working Time
Starts per Day Optimum
Starts per Day Worst
Number of Alarms
Actual Bonus
-
S016
1
24
-
S017
1 – 240
S018
0 – 32000
0 - 12
S019
-
Service Menu: Compressor 1 Settings Maintenance / Wellness Parameters:
Page 3 of 8
Menu Line
S023
S024
S025
S026
S027
S028
S029
S030
S031
S032
S033
Parameter
Password
Default
Range
-
-
Number of Starts
-
0 – 32000
0 – 32000
0 – 999 minutes
1 – 240
Run Hours
-
Average Working Time
Starts per Day Optimum
Starts per Day Worst
Number of HP Alarms
Number of LP Alarms
Number of OL Alarms
Number of DS HT Alarms
Actual Bonus
-
12
240
1 – 240
-
-
-
-
-
0 – 32000
0 – 32000
0 – 32000
0 - 32000
0 - 12
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Service Menu: Compressor 2 Settings Maintenance / Wellness Parameters:
Page 4 of 8
Menu Line
S034
Parameter
Password
Default
Range
-
-
-
-
S035
Number of Starts
0 – 32000
0 – 32000
S036
Run Hours
S037
S038
S039
S040
S041
S042
S043
S044
Average Working Time
Starts per Day Optimum
Starts per Day Worst
Number of HP Alarms
Number of LP Alarms
Number of OL Alarms
Number of DS HT Alarms
Actual Bonus
-
0 – 999 minutes
1 – 240
12
240
1 – 240
-
-
-
-
-
0 – 32000
0 – 32000
0 – 32000
0 - 32000
0 - 12
Service Menu: Electric Heater 1 Settings Maintenance / Wellness
Parameters: Page 5 of 8
Menu Line
S045
Parameter
Password
Default
Range
-
-
S046
Number of Starts
Run Hours
-
0 – 32000
0 – 32000
0 – 999 minutes
1 – 240
S047
-
-
S048
Average Run Time
Starts per Day Optimum
Starts per Day Worst
Number of Alarms
Actual Bonus
S049
24
240
-
S050
1 – 240
S051
0 – 32000
0 - 12
S052
-
71
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Service Menu: Electric Heater 2 Settings Maintenance / Wellness
Parameters: Page 6 of 8
Menu Line
S056
Parameter
Password
Default
Range
-
-
S057
Number of Starts
Run Hours
-
0 – 32000
0 – 32000
0 – 999 minutes
1 – 240
S058
-
-
S059
Average Run Time
Starts per Day Optimum
Starts per Day Worst
Number of Alarms
Actual Bonus
S060
24
240
-
S061
1 – 240
S062
0 – 32000
0 - 12
S063
-
Service Menu: Electric Heater 3 Settings Maintenance / Wellness
Parameters: Page 7 of 8
Menu Line
S067
Parameter
Password
Default
Range
-
-
S068
Number of Starts
Run Hours
-
0 – 32000
0 – 32000
0 – 999 minutes
1 – 240
S069
-
-
S070
Average Run Time
Starts per Day Optimum
Starts per Day Worst
Number of Alarms
Actual Bonus
S071
24
240
-
S072
1 – 240
S073
0 – 32000
0 - 12
S074
-
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Service Menu: Humidifier Settings Maintenance / Wellness Parameters:
Page 8 of 8
Menu Line
S078
Parameter
Password
Default
Range
-
-
S079
Number of Starts
Run Hours
-
0 – 32000
0 – 32000
0 – 999 minutes
1 – 240
S080
-
-
S081
Average Run Time
Starts per Day Optimum
Starts per Day Worst
Number of Alarms
Actual Bonus
S082
24
240
-
S083
1 – 240
S084
0 – 32000
0 - 12
S085
-
Service Menu: Diagnostics / Service Mode S300 series: Page 1 of 5
Menu Line
S301
S302
S303
S304
S305
S306
S307
S308
S309
S310
S311
Parameter
Password
Range
-
Manual Mode
Yes or No
Off or On
Off or On
Off or On
0-100%
Off or On
Motor(s)
Compressor 1
Compressor 1 Capacity
Compressor 1 Cycle Ramp
Compressor 1 LLSV
Compressor 2
Compressor 2 Capacity
Compressor 2 Cycle Ramp
Compressor 2 LLSV
Off or On
0 – 100%
73
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Service Menu: Diagnostics / Service Mode: Page 2 of 5
Menu Line
S312
S313
S314
S315
S316
S317
S318
S319
S320
S321
S322
Parameter
Password
Range
-
HP 1 Alarm Counter
HP 2 Alarm Counter
HT 1 Alarm Counter
HT 2 Alarm Counter
0
0
0
0
Electric Heat 1(or HG/ HW)
Heat 2 (or E.Heat 1)
Off or On
Off or On
Off or On
Heat 3 (or E.Heat 2)
Service Menu: Diagnostics / Service Mode: Page 3 of 5
Menu Line
S323
S324
S325
S326
S327
S328
S329
S330
S331
S332
S333
Parameter
Password
Range
-
Humidifier Fill
Humidifier
Off or On
Off or On
Off or On
Off or On
Off or On
Off or On
0 – 100%
0 – 100%
0 – 100%
0 – 100%
Alarm Relay
FC Relay
3P Actuator Open
3P Actuator Close
Analog Out 1
Analog Out 2
Analog Out 3
Analog Out 4
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Service Menu: Diagnostics / Service Mode: Page 4 of 5
Menu Line
S334
Parameter
Password
Range
-
S335
Status Remote Shutdown
Status Airflow Loss
Off or On
S336
OK or Active
OK or Active
OK or Active
OK or Active
OK or Active
OK or Active
OK or Active
S337
Status Motor Overload
Status Filter
S338
S339
Status Customer Input 1
Status Customer Input 2
Status Customer Input 3
Status Customer Input 4
S340
S341
S342
Service Menu: Diagnostics / Service Mode: Page 5 of 5
Menu Line
S345
S346
S347
S348
S349
S350
S351
S352
S353
S354
S355
Parameter
Password
Range
-
Status HP1
OK or Active
OK or Active
OK or Active
OK or Active
OK or Active
OK or Active
OK or Active
Off or On
Status LP1
Status C1 OL
Status HP2
Status LP2
Status C2 OL
Status Humidifier Problem
Status DT2
Status Min CW
Off or On
75
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Service Menu: Set Alarm Parameters S200 series: Page 1 of 6
Menu Line
S201
S202
S203
S204
S205
S206
S207
S208
S209
S210
S211
Parameter
Password
Default
-
Range
-
Return Sensor Alarms
High Return Temperature
Low Return Temperature
High Return Humidity
Low Return Humidity
Enabled
80ºF
Disabled or Enabled
34 - 210ºF
34 - 210ºF
1 – 99%
65ºF
60%
40%
1 – 99%
Sensor A Alarms
Disabled
90ºF
Disabled or Enabled
34 - 210ºF
34 - 210ºF
1 – 99%
High Temperature Sensor A
Low Temperature Sensor A
High Humidity Sensor A
Low Humidity Sensor A
55ºF
70%
30%
1 – 99%
Service Menu: Set Alarm Parameters: Page 2 of 6
Menu Line
S212
S213
S214
S215
S216
S217
S218
S219
S220
S221
S222
Parameter
Default
Range
Password
-
-
Customer Input 1
Water alarm
Closed
See note
Open or Closed
See note
Customer Input 1 Active When
Customer Input 2
Water alarm
Closed
Customer Input 2 Active When
Customer Input 3
Open or Closed
See note
Water alarm
Closed
Customer Input 3 Active When
Customer Input 4
Open or Closed
See note
Water alarm
Closed
Customer Input 4 Active When
Warning Activates Alarm Relay
Reset Disabled Alarms
Open or Closed
Yes or No
Yes
No
Yes or No
Note: Customer Inputs 1, 2, 3 and 4 messages may be selected from Smoke
Detected, Water Alarm, Condensate Pump Alarm, Flow Alarm, Standby Pump,
Standby Unit.
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Service Menu: Set Alarm Parameters: Page 3 of 6
Parameter
Password
Menu Line
S223
S224
S225
S226
S227
S228
S229
S230
S231
S232
S233
S234
S235
DELAY
10 Sec
10 Sec
60 Sec
10 Sec
10 Sec
10 Sec
10 Sec
10 Sec
10 Sec
10 Sec
10 Sec
EN-DIS
En
TYPE
Main Fan Overload
Loss of Airflow
Alarm
En
Alarm
Clogged Filters
En
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
High Room Temperature
Low Room Temperature
High Room Humidity
Low Room Humidity
High Temp Sensor A
Low Temp Sensor A
High Humid Sensor A
Low Humid Sensor A
En
En
En
En
En
En
En
En
Service Menu: Set Alarm Parameters: Page 4 of 6
Parameter
Password
Menu Line
S236
S237
S238
S239
S240
S241
S242
S243
S244
S245
S246
S247
DELAY
EN-DIS
En
TYPE
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Comp 1 Overload
10 Sec
Comp 2 Overload
10 Sec
En
Comp 1 High Pressure
Comp 1 High Pressure
Comp 1 Low Pressure
Comp 2 Low Pressure
Comp 1 Pumpdown Fail
Comp 2 Pumpdown Fail
Dig Scroll1 High Temp
Dig Scroll2 High Temp
-
-
-
-
-
-
-
En
En
En
En
En
En
En
77
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Service Menu: Set Alarm Parameters: Page 5 of 6
Menu Line
S249
S250
S251
S252
S253
S254
S255
S256
S257
S258
S259
S260
Parameter
Password
DELAY
-
EN-DIS
En
TYPE
Warning
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Working Hours Exceeded
Smoke Detected
5 Sec
5 Sec
5 Sec
5 Sec
5 Sec
5 Sec
5 Sec
-
En
Water Under Floor
Cond Pump-High Water
Loss of Flow
En
En
En
Standby Glycol Pump On
Standby Unit On
En
En
Humidifier Problem
No Connection w/ Unit 1
Unit X Disconnected
En
En
-
En
Service Menu: Set Alarm Parameters: Page 6 of 6
Parameter
Menu Line
S262
S263
S264
S265
S266
S267
S268
S269
S270
S271
S272
S273
S274
Password
DELAY
5 Sec
5 Sec
5 Sec
5 Sec
5 Sec
5 Sec
5 Sec
5 Sec
5 Sec
5 Sec
5 Sec
EN-DIS
En
TYPE
Alarm
Customer Input 1
Customer Input 2
Customer Input 3
Customer Input 4
Call Service
En
Alarm
En
Alarm
En
Alarm
En
Message
Message
Alarm
High Temperature
Loss of Air Blower 1
Reheat Lockout
En
En
En
Message
Message
Message
Message
Humidifier Lockout
Humid + Reheat Lockout
Compressor(s) Lockout
En
En
En
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Service Menu: Sensor Calibration/ Setup Parameters S600 series:
Page 1 of 3
Menu Line
Parameter
Range
-
S601
S602
S603
S604
S605
S606
S607
S608
S609
Password
Return temperature
±17ºF
Calibrated return temperature
Return humidity
32 - 122ºF
±9.9%
Calibrated return humidity
Digital Scroll 1 NTC
20 – 80%
±17ºF
Calibrated digital scroll 1 NTC
Digital Scroll 2 NTC
84 – 313ºF
±17ºF
Calibrated digital scroll 2 NTC
84 - 313ºF
Service Menu: Sensor Calibration/ Setup Parameters: Page 2 of 3
Menu Line
S612
Parameter
Range
-
Password
S613
Temperature sensor A
±17ºF
S614
Calibrated temperature sensor A
Humidity sensor A
32 - 122ºF
±9.9%
S615
S616
Calibrated humidity sensor A
Temperature sensor B
20 – 80%
±17ºF
S617
S618
Calibrated temperature sensor B
Humidity sensor B
32 - 122ºF
±9.9%
S619
S620
Calibrated humidity sensor B
20 – 80%
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Service Menu: Sensor Calibration/ Setup Parameters: Page 3 of 3
Menu Line
S623
S624
S625
S626
S627
S628
S629
S630
S631
S632
S633
Parameter
Default
Range
-
Password
Glycol sensor PTC or NTC
Glycol sensor
NTC
NTC or PTC
±17ºF
-
Calibrated glycol sensor
Supply sensor PTC or NTC
Supply sensor
-
4 – 113ºF
NTC or PTC
±17ºF
NTC
-
-
-
-
-
-
Calibrated supply sensor
Temperature sensor C
Calibrated temperature sensor C
Humidity sensor C
32 - 122ºF
±17ºF
32 - 122ºF
±9.9%
Calibrated humidity sensor C
20 – 80%
Service Menu: System / Network Setup Parameters Series S800:
Page 1 of 2, System View
Menu Line
S801
S802
S803
S804
S805
S806
S807
S808
S809
S810
S811
Function
Password
Default
Range
-
-
-
Number of connected units
Teamwork mode
1 – 16
No, 1, 2
No
U2U group
-
1 - 99
Configuration Safe Status
Network Safe Status
SW version:
No
No, Save, Load
No, Save, Load
-
-
80
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Service Menu: System / Network Setup Parameters Series S800:
Page 2 of 2, System View
Menu Line
Function
Default
Range
S812
S813
S814
S815
S816
S817
S818
S819
S820
S821
S822
Password
IP Address
Netmask
Gateway
MAC
-
-
-
-
-
-
-
-
-
-
-
-
IP Address
Netmask Range
Gateway Range
MAC Range
-
U2U Protocol
U2U Address
33 - 64
-
Bootloader Variables Status
Bootloader Variables Control
Changed, Updating
No, Save + Reboot
Service Menu: System / Network Setup Parameters Series S800:
Page 1 of 2, Unit View
Menu Line
S823
S824
S825
S826
S827
S828
S829
S830
S831
S832
S833
Function
Password
Default
Range
-
Monitoring Address
3
U2U Group
Unit Name
1 – 99
Unit
6 Digits
Configuration Safe Status
Network Safe Status
SW version:
No
No
-
No, Save, Load
No, Save, Load
81
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Service Menu: System / Network Setup Parameters Series S800:
Page 2 of 2, Unit View
Menu Line
S834
S835
S836
S837
S838
S839
S840
S841
S842
S843
S844
Function
Default
Range
Password
-
-
-
-
-
-
-
-
-
-
-
Monitoring Protocol
IP Address
Netmask
-
IP Range
Netmask Range
Gateway Range
MAC Range
33 - 64
Gateway
MAC
U2U Protocol
U2U Address
-
Bootloader Variables Status
Bootloader Variables Control
Changed, Updating
No, Save + Reboot
Service Menu: Option Setup Parameters S400 series: Page 1 of 2
Menu Line
S401
S402
S403
S404
S405
S406
S407
S408
S409
S410
S411
Function
Password
Default
Range
-
-
Compressor Sequence
Low Pressure Delay (WSK)
Actual LP1 Pressure
Actual LP2 Pressure
Electric Stages
Auto
1, 2, Auto
3
0 – 5 Minutes
14.5 – 87.0 psiA
14.5 – 87.0 psiA
0, 1, 2, 3
-
-
-
No
Hot Water Heat On / Off
Hot Gas Heat
No or Yes
No
No, Comp. 1, Comp. 2
0, 1, 2, 3l
Total Heat Stages
No
3P Actuator Runtime
3P Actuator Direction
165 Seconds
Direct
50 – 400 seconds
Direct or Reverse
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Service Menu: Option Setup Parameters S400 series:: Page 2 of 2
Menu Line
S412
S413
S414
S415
S416
S417
S418
S419
S420
S421
S422
Function
Password
Default
-
Range
-
Humidification Enabled
Infrared Flush Rate
Yes
Yes or No
150%
Yes
110 – 500%
No or Yes
Dehumidification Enabled
Electric Reheat Operation
Single Unit Auto Restart
On – Off Enabled
No
No, Normal, Delayed
0 – 999 seconds
Yes or No
5 Seconds
Yes
CW Flush
No
No
No
No, 1 – 99 Hours
No, 1 – 99 Hours
No, 1 – 99 Hours
Freecooling Flush
Hot Water Flush
Service Menu: Service Contacts Parameters S700 series:
Menu Line
S701
Function
Password
Default
Range
-
-
S702
Country
USA
None, United States
Text-string
Text-string
Text-string
Text-string
S703
Address line 1
Address line 2
Address line 3
Address line 4
-
-
-
-
S704
S705
S706
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Advanced Menu Parameters
The Advanced menu displays allows the service technician to set the unit
configuration code and to customize the various unit settings for site-specific
operation. The factory default password to access the advanced menu items for
programming is “221”. The Advance Menu selections include the following
choices in the order shown:
•
•
Factory Settings
Access Levels
Advanced Menu: Factory Settings Parameters A001 series: Page 1 of 6
Menu Code
A001
Parameter
Password
Range
-
A002
Unit field code (R)
Set code (W)
(01 – 06)
(01 – 06)
(07 – 12)
(07 – 12)
(13 – 18)
(13 – 18)
A003
A004
Unit field code (R)
Set code (W)
A005
A006
Unit field code (R)
Set code (W)
A007
No
A008
Unit Code Control
Load+Execute
Save+Execute
No
A009
A010
A011
Unit Code Status
Load+Execute
Save+Execute
Exception List Control
Exception List Status
No, Load
No
Load+Execute
Save+Execute
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Advanced Menu: Factory Settings Parameters A100 series: Page 2 of 6
Menu Code
A101
Function
Password
Default
Range
-
-
A102
Refrigerant Type
R22
R22, R407C
A103
A104
Main Fan Overload
Shut down
Shut down
Shut down, Disable
Shut down, Disable
Loss of Airflow
A105
A106
Number of Compressors
Compressor Delay Time
2
0
0, 1, 2
0 - 120 Sec
Compressor Minimum
On Time
A107
3 Min
0 - 5 Min
Compressor Minimum
Off Time
A108
A109
A110
3 Min
Yes
0 - 5 Min
No, Yes
Pump Down
No, Unloader, HGBP,
Digital, Digital + TH
Capacity Control Type
Unloader
Advanced Menu: Factory Settings Parameters A100 series: Page 3 of 6
Menu Code
A112
Parameter
Password
Default
Range
-
-
A113
Digi Scroll Cycle
15
No, 10 - 30 Sec
High Temperature Digi
Scroll
A114
A115
A116
268°F
250°F
Analog
33 - 392°F
33 - 392°F
Digi Scroll Switchback
Low Pressure Device
Type
Analog, Switch
Low Pressure Threshold
Phase 1
A117
A118
* See Note 1
* See Note 2
0.0 - 145 psiA
0.0 - 145 psiA
Low Pressure Threshold
Phase 2
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Advanced Menu: Factory Settings Parameters: Page 4 of 6
Menu Code
A123
Parameter
Password
Default
-
Range
-
A124
LP1 Sensor
10%
0 - 100%
A125
LP1 Signal
150 psiA
-
-87.0 to +725 psiA
0 - 100%
A126
Actual LP1 Signal
LP2 Sensor
A127
10%
0 - 100%
A128
LP2 Signal
150 psiA
-
-87.0 to +725 psiA
0 - 100%
A129
Actual LP2 Signal
Pumpdown Cutout
Pumpdown Recycle
A130
35 psiA
80 psiA
0.0 - 145 psiA
0.0 - 145 psiA
A131
Heat Rejection Control
Type
Fan Speed /
Lee-Temp / Glycol
A132
Fan Speed
Advanced Menu: Factory Settings Parameters A100 series: Page 5 of 6
Menu Code
A134
Parameter
Password
Default
Range
-
-
A135
A136
CW flush Duration
Freecooling
0
No, 1 - 3 min
No, Yes
A137
No
A138
A139
Freecooling Flush Duration
Freecooling Flush Starts R5
CO + FC simultaneously
0
No, 1 - 3 min
No, Yes
A140
Yes
Yes
A141
No, Yes
A142
A143
Hot water flush duration
0
No, 1 - 3 min
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Advanced Menu: Factory Settings Parameters: Page 6 of 6
Menu Code
A145
Parameter
Password
Default
Range
-
-
A146
Humidifier Model
No
No, external, IFS, IFL
Humidity in Last
xx Hours
A147
A148
A149
A150
A151
15hr
1 - 120 hours
1 - 120 seconds
1 - 120 seconds
1 - 60 minutes
1, 2, both
IFS 30
IFL 60
Prefill Time
Fill Time
IFS 30
IFL 50
Humidifier On
Time
IFS 8
IFL 10
Dehum with
Compressor
2
A152
A153
A154
A155
Analog Output 1
Analog Output 2
Analog Output 3
Analog Output 4
Not used
Not used
Not used
Not used
* See note 3
*See note 3
* See note 3
* See note 3
Note 1: LP threshold Phase 1 (A117):
If condenser ctrl (A132) = fan speed then setting is 50 psiA ; otherwise 75 psiA.
If the condenser control setting changes, the setting for A117 will be updated
automatically. If any of the sources (Refrigerant, Freecooling, Hotwater) changes,
the setting for A118 will be updated automatically.
Note 2: LP threshold Phase 1 (A118):
R22 (A102) + NO FC (A137) + NO Hotwater (S408) = 63 psiA
R22 (A102) + YES FC (A137) + NO Hotwater (S408) = 68 psiA
R22 (A102) + NO FC (A137) + YES Hotwater (S408) = 75 psiA
R22 (A102) + YES FC (A137) + YES Hotwater (S408) = 75 psiA
R407c (A102) + NO FC (A137) + NO Hotwater (S408) = 70 psiA
R407c (A102) + YES FC (A137) + NO Hotwater (S408) = 75 psiA
R407c (A102) + NO FC (A137) + YES Hotwater (S408) = 83 psiA
R407c (A102) + YES FC (A137) + YES Hotwater (S408) = 83 psiA
Note 3: The following components may be controlled with the Analog Outputs and
labeled as: Hot Water Reheat, 3P Valve, Fan Speed, Cooling, Cooling 1, Cooling
2, Heating and Not Used.
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Advanced Menu: Factory Access Parameters A200 series:
Menu Code
A201
Parameter
Default Range
Password Level 1 (User)
Password Level 2 (Service)
Password Level 3 (Advanced)
149
501
221
4 digits
4 digits
4 digits
A202
A203
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Events Notifications Parameters
ID
000
001
002
003
004
005
006
007
008
009-017
018
019
020
021
022
023
024
025
026
027
028
029
030
031
032
033
034
035
036
Type
Alarm
Description (Large Display)
GENERAL ALARM
Description (Small Display)
GENERAL ALARM
Alarm
COMP. 1 HIGH PRESSURE
COMP. 1 LOW PRESSURE
HIGH CHILLED WATER
LOW CHILLED WATER FLOW
EL. HEAT. OVERHEATED
MAIN FAN OVERLOAD
LOSS OF AIRFLOW
COMP. 1 HIGH PRESSURE
COMP. 1 LOW PRESSURE
HIGH CHILLED WATER
LOW WATER FLOW
EL. HEAT. OVERHEATED
MAIN FAN OVERLOAD
LOSS OF AIRFLOW
CLOGGED FILTERS
Future
Alarm
Warning
Warning
Warning
Alarm
Alarm
Warning
Future
CLOGGED FILTERS
Future
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Future
HIGH ROOM TEMPERATURE
LOW ROOM TEMPERATURE
HIGH ROOM HUMIDITY
LOW ROOM HUMIDITY
HIGH ROOM TEMPERATURE
LOW ROOM TEMPERATURE
HIGH ROOM HUMIDITY
LOW ROOM HUMIDITY
UNIT HOURS EXCEEDED
C1 HOURS EXCEEDED
HUMIDIFIER HOURS EXCEEDED
SUPPLY SENSOR FAILURE
Future
HIGH ROOM TEMPERATURE
LOW ROOM TEMPERATURE
HIGH ROOM HUMIDITY
LOW ROOM HUMIDITY
HIGH ROOM TEMPERATURE
LOW ROOM TEMPERATURE
HIGH ROOM HUMIDITY
LOW ROOM HUMIDITY
UNIT HOURS EXCEEDED
C1 HOURS EXCEEDED
HUM. HOURS EXCEEDED
SUPPLY SENSOR FAILURE
Future
Alarm
ROOM SENSOR FAILURE
SENSOR "A" FAILURE
Future
ROOM SENSOR FAILURE
SENSOR "A" FAILURE
Future
Warning
Future
Warning
Future
NETWORK FAILURE
Future
NETWORK FAILURE
Future
Message
UNIT ON
UNIT ON
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Events Notifications Parameters (continued)
ID
037
038
039
040
041
042
043
044
045
046
047
048
049
050
051
052
053
054
055
056
057
058
059
060
061
062
063
064
065-069
Type
Description (Large Display)
UNIT OFF
Description (Small Display)
UNIT OFF
Message
Message
Message
Message
Message
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Alarm
SLEEP MODE
SLEEP MODE
STANDBY MODE
POWER ON UNIT LOGIN
POWER OFF
STANDBY MODE
POWER ON UNIT LOGIN
POWER OFF
Unit 1 disconnected
Unit 2 disconnected
Unit 3 disconnected
Unit 4 disconnected
Unit 5 disconnected
Unit 6 disconnected
Unit 7 disconnected
Unit 8 disconnected
Unit 9 disconnected
Unit 10 disconnected
Unit 11 disconnected
Unit 12 disconnected
Unit 13 disconnected
Unit 14 disconnected
Unit 15 disconnected
Unit 16 disconnected
COMP. 2 HIGH PRESSURE
COMP. 2 LOW PRESSURE
C2 HOURS EXCEEDED
Future
Unit 1 disconnected
Unit 2 disconnected
Unit 3 disconnected
Unit 4 disconnected
Unit 5 disconnected
Unit 6 disconnected
Unit 7disconnected
Unit 8 disconnected
Unit 9 disconnected
Unit 10 disconnected
Unit 11 disconnected
Unit 12 disconnected
Unit 13 disconnected
Unit 14 disconnected
Unit 15 disconnected
Unit 16 disconnected
COMP. 2 HIGH PRESSURE
COMP. 2 LOW PRESSURE
C2 HOURS EXCEEDED
Future
Alarm
Warning
Future
Warning
Future
GLYCOL TEMP. SENSOR
Future
GLYCOL TEMP. SENSOR
Future
Warning
Future
ON-OFF KEY DISABLED
Future
ON-OFF KEY DISABLED
Future
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Events Notifications Parameters (continued)
ID
070
Type
Warning
Alarm
Description (Large Display)
NO CONNECTION TO UNIT 1
C1 MOTOR PROTECTION
C2 MOTOR PROTECTION
Future
Description (Small Display)
NO CONN. TO UNIT 1
C1 MOTOR PROTECTION
C2 MOTOR PROTECTION
Future
071
072
Alarm
073-078
079
Future
Message
Message
Future
Message
Warning
Future
Message
Warning
Future
Alarm
UNIT DISABLED
UNIT DISABLED
080
UNIT SHUT DOWN
Future
UNIT SHUT DOWN
Future
081-084
085
UNIT SYNCHRONISATION
HUMIDIFIER PROBLEM
Future
UNIT SYNCHRONISATION
HUMIDIFIER PROBLEM
Future
086
087
088
DEHUM HOURS EXCEEDED
FC. HOURS EXCEEDED
Future
DEHUM HOURS EXCEEDED
FC. HOURS EXCEEDED
Future
089
090
091
PUMP DOWN FAILURE C1
Future
PUMP DOWN FAILURE C1
Future
092-095
096
Future
Alarm
PUMP DOWN FAILURE C2
DIGISCROLL 1 HIGH TEMP.
DIGISCROLL 2 HIGH TEMP.
Future
PUMP DOWN FAILURE C2
D.SCROLL 1 HIGH TEMP.
D.SCROLL 2 HIGH TEMP.
Future
097
Alarm
098
Alarm
099 102
103
Future
Message
Alarm
SHORT CYCLING
SHORT CYCLING
104
SMOKE DETECTED
WATER UNDER FLOOR
COND. PUMP-HIGH WATER
LOSS OF FLOW
SMOKE DETECTED
WATER UNDER FLOOR
COND. PUMP-HIGH WATER
LOSS OF FLOW
105
Alarm
106
Alarm
107
Alarm
108
Alarm
STANDBY GLYCOL PUMP ON
STANDBY UNIT ON
HW/HG HOURS EXCEEDED
STBY GLYCOL PUMP ON
STANDBY UNIT ON
HW/HG WORKING HOURS
109
Alarm
110
Warning
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Events Notifications Parameters (continued)
ID
Type
Description (Large Display) Description (Small Display)
EL.HEAT 1 HOURS
EL.HEAT 1 HOURS EXC.
EXCEEDED
111
Warning
EL.HEAT 2 HOURS
EL.HEAT 2 HOURS EXC.
EXCEEDED
112
113
Warning
Warning
EL.HEAT 3 HOURS
EL.HEAT 3 HOURS EXC.
EXCEEDED
Event ID number, Description and Function
ID Description
Event explanation
Default Shut Rotat restart if
Type
down
e
duty unit
single stand fails also
unit
by
000 GENERAL
ALARM
001 COMP 1 HIGH Compressor 1 stopped
PRESSURE because of high pressure
Warning or Alarm was
acknowledged or reset
Reset
Alarm
-
-
-
no
no
no
yes
yes
no
yes
(broken co
will remain
off)
002 COMP 1 LOW Compressor 1 stopped
Alarm
yes
PRESSURE
because of low pressure
(broken co
will remain
off)
003 HIGH CW
TEMP
chilled water temperature Warning
too high (input from
-
thermostat)
004 LOSS OF CW chilled water flow too low Warning
FLOW (input from flow switch)
005 EL HEAT HIGH electric heaters stopped Warning
no
no
no
no
-
-
TEMP
because of too high
temperature on the
safety thermostat
006 MAIN FAN
OVERLOAD
fan motor protection has Alarm
stopped the fan due to
overload.
yes, if yes
set to
shut
yes, only if
set to
"disable"
this event can be set to
switch off the unit or to
disable hum and electric
heat.
down
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007 LOSS OF
AIRFLOW
not enough airflow
through the unit.
Alarm
yes, if yes
set to
yes, only if
set to
this event can be set to
switch off the unit or to
disable hum and electric
heat.
shut
down
"disable"
008 CLOGGED
FILTERS
018 HIGH ROOM actual return air
air filters are dirty
Warning
Warning
no
no
no
no
-
-
TEMP
temperature (value from
std. sensor) is higher
than the threshold
actual return air
temperature (value from
std. sensor) is lower than
the threshold
019 LOW ROOM
TEMP
Warning
no
no
no
no
no
no
no
no
no
no
no
no
no
no
-
-
-
-
-
-
-
020 HIGH ROOM actual return air humidity Warning
HUM
(value from std. sensor)
is higher than the
threshold
actual return air humidity Warning
(value from std. sensor)
is lower than the
021 LOW ROOM
HUM
threshold
022 HIGH TEMP
SENSOR A
actual temperature
(value from optional
sensor A) is higher than
the threshold
actual temperature
(value from optional
sensor A) is lower than
the threshold
actual humidity (value
from optional sensor A)
is higher than the
threshold
actual humidity (value
from optional sensor A)
is lower than the
Warning
Warning
Warning
Warning
023 LOW TEMP
SENSOR A
024 HIGH HUM
SENSOR A
025 LOW HUM
SENSOR A
threshold
026 UNIT HRS
EXCEEDED
actual working hours of Warning
the fan are higher than
the threshold set.
no
no
no
no
-
-
027 COMP 1 HRS actual working hours of Warning
EXCEEDED
compressor 1 are higher
than the threshold set.
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028 HUM HRS
EXCEEDED
actual working hours of Warning
the fan are higher than
the threshold set.
no
no
no
no
-
-
029 SUPPLY
SENSOR
sensor faulty or not
present, but needed from
control (supply limit
control enabled).
Warning
FAILURE
031 ROOM
SENSOR
no valid data from the
std. sensor
Alarm
yes
yes
no
FAILURE
032 SENSOR A
FAILURE
034 NETWORK
FAILURE
no valid data from sensor Warning
A
no
no
no
no
-
-
the unit showing this
event has no connection
to the unit #1.
Warning
036 UNIT ON
037 UNIT OFF
038 SLEEP MODE unit is in sleep mode:
according to the settings
it is switched off or
fan motor in operation
unit shut down
Message
Message
Message
-
-
-
-
-
-
-
-
-
working with a selectable
deadband.
039 STANDBY
MODE
unit is in standby (fan
off), waiting for a call to
start from the system (if
a unit fails or there is a
bus interruption).
Message
-
-
-
040 POWER ON
control is powered again Message
after a power off.
-
-
-
-
-
-
041 POWER OFF no power to the control: Message
this message will appear
at the next power on.
042 Unit 1
this event is created from Warning
no
no
-
disconnected a coldfire display only:
the display doesn't find
unit #1
043 Unit 2
"
Warning
Warning
Warning
Warning
Warning
no
no
no
no
no
no
no
no
no
no
-
-
-
-
-
disconnected
044 Unit 3
disconnected
045 Unit 4
disconnected
046 Unit 5
disconnected
047 Unit 6
disconnected
"
"
"
"
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048 Unit 7
disconnected
049 Unit 8
disconnected
050 Unit 9
disconnected
051 Unit 10
disconnected
052 Unit 11
disconnected
053 Unit 12
disconnected
054 Unit 13
disconnected
055 Unit 14
disconnected
056 Unit 15
disconnected
057 Unit 16
disconnected
058 COMP 2 HIGH Compressor 2 stopped
PRESSURE because of high pressure
"
"
"
"
"
"
"
"
"
"
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Warning
Alarm
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
yes
-
-
-
-
-
-
-
-
-
-
yes
(broken co
will remain
off)
059 COMP 2 LOW Compressor 2 stopped
PRESSURE because of low pressure
Alarm
no
yes
yes
(broken co
will remain
off)
060 COMP 2 HRS actual working hours of Warning
no
no
no
no
-
EXCEEDED
compressor 2 are higher
than the threshold set.
sensor faulty or not
present, but needed from
control (freecooling
062 FREECOOL
TEMP
Warning
-
SENSOR
control enabled).
064 ON-OFF KEY the display on-off button Warning
no
no
no
no
no
-
-
DISABLED
was set disabled but
somebody pressed it.
the unit showing this
070 NO
Warning
Alarm
CONNECTION event has no connection
w/Unit1
to the unit #1.
071 COMP 1
Compressor 1 stopped
because of overload
yes
yes
OVERLOAD
(broken co
will remain
off)
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072 COMP 2
OVERLOAD
Compressor 2 stopped
because of overload
Alarm
no
yes
-
yes
(broken co
will remain
off)
079 UNIT
DISABLED
this message appears
after a critical alarm
(airflow, main fan
Message
-
overload) and indicates
that the unit is operating
w/o humidifier or
electrical heaters.
080 UNIT SHUT
DOWN
this message appears
after a critical alarm
(airflow, main fan
overload) and indicates
that the unit is shut down
due to the alarm.
Message
-
-
-
085 UNIT
a unit came back into the Message
-
-
SYNCHRONIS network.
ATION
086 HUMIDIFIER humidifier
PROBLEM overtemperature or high
water level
088 DEHUM HRS actual working hours of Warning
Alarm
no
no
yes
no
EXCEEDED
dehumidification are
higher than the threshold
set.
089 FC HRS
EXCEEDED
actual working hours of Warning
freecooling are higher
than the threshold set.
no
no
no
-
091 COMP 1
Pump down of circuit 1
Alarm
yes
yes
(broken co
will remain
off)
PUMPDOWN was not completed
FAIL
(pressure value not
reached).
096 COMP 2
Pump down of circuit 2
Alarm
no
no
yes
yes
yes
PUMPDOWN was not completed
FAIL
(broken co
will remain
off)
(pressure value not
reached).
097 DIG SCROLL1 Digital Scroll compressor Alarm
yes
HIGH TEMP
#1 shut off because of
high temperature (sensor
is inside the
(broken co
will remain
off)
compressor).
96
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098 DIG SCROLL2 Digital Scroll compressor Alarm
no
yes
yes
HIGH TEMP
#1 shut off because of
high temperature (sensor
is inside the
(broken co
will remain
off)
compressor).
103 SHORT CYCLEcompressors are
requested from control to
Message
Alarm
-
no
-
start too often - control is
unstable.
104 SMOKE
DETECTED
customer input is active.
no
yes
yes (if not
disabled
externally)
105 WATER
UNDER
customer input is active.
Alarm
Alarm
Alarm
Alarm
Alarm
no
no
no
no
no
no
yes
yes
yes
yes
yes
no
yes (if not
disabled
externally)
yes (if not
disabled
externally)
yes (if not
disabled
externally)
yes (if not
disabled
externally)
yes (if not
disabled
externally)
-
FLOOR
106 COND PUMP- customer input is active.
HIGH WATER
107 LOSS OF
FLOW
customer input is active.
108 STBY GLYCOL customer input is active.
PUMP ON
109 STANDBY
UNIT ON
customer input is active.
110 HW/HG HRS actual working hours of Warning
EXCEEDED
hot water heat / hot gas
reheat are higher than
the threshold set.
111 EL HEAT1 HRSactual working hours of Warning
no
no
no
no
no
no
-
-
-
EXCEEDED
electrical heater stage 1
are higher than the
threshold set.
112 EL HEAT2 HRSactual working hours of Warning
EXCEEDED
electrical heater stage 2
are higher than the
threshold set.
113 EL HEAT3 HRSactual working hours of Warning
EXCEEDED
electrical heater stage 3
are higher than the
threshold set.
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114 UNIT CODE
MISSING
this alarm appears if a
totally new board was
started the very first time
in its life. the unit code
must be set in order to
let the board know in
which type of unit it is
mounted, which
Alarm
yes
yes
no
component it shall drive
and how to map the
inputs and outputs.
115 UNIT CODE 01 this digit of the unit code Alarm
yes
yes
no
MISMATCH
has been set to a value
out of range (no code
logic available for this
number)
116 UNIT CODE 02 "
MISMATCH
117 UNIT CODE 03 "
MISMATCH
118 UNIT CODE 04 "
MISMATCH
119 UNIT CODE 05 "
MISMATCH
120 UNIT CODE 06 "
MISMATCH
121 UNIT CODE 07 "
MISMATCH
122 UNIT CODE 08 "
MISMATCH
123 UNIT CODE 09 "
MISMATCH
124 UNIT CODE 10 "
MISMATCH
125 UNIT CODE 11 "
MISMATCH
126 UNIT CODE 12 "
MISMATCH
127 UNIT CODE 13 "
MISMATCH
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
Alarm
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
no
no
no
no
no
no
no
no
no
no
no
no
no
no
128 UNIT CODE 14 "
MISMATCH
129 UNIT CODE 15 "
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MISMATCH
130 UNIT CODE 16 "
MISMATCH
131 UNIT CODE 17 "
MISMATCH
Alarm
Alarm
Alarm
yes
yes
yes
yes
yes
yes
no
no
no
132 UNIT CODE 18 "
MISMATCH
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Chapter 3
iCOM
Control Board Connections
Introduction
This section describes the basic connection points on the Liebert Deluxe
System 3 units. Each sub-section describes the standard electrical connections
supplied with the iCOM controls. The detail is as follows:
Display Assembly: Large and Small
Plug and Terminal Block Connections
Fuse Board: All Units
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LCD Display Board
The Advanced and Advanced with Graphics LCD display board is mounted to the
system unit accent panel. The LCD display board connection to the system
control board is identified as ribbon connector P26.
Large Disdplay
Small Display
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Control Board DIP Switches and Plug Connectors
This section deals with the 20 plug connections and the terminal block located on
the unit control board. The tables in this section show all of the pin connections
and the reference points for signal flow through these connections.
Unit Mounted Control Board
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iCOM Control Board DIP Switch #2 Settings
Connector
Input/ Output Type
NTC Thermistor
Setting
P7-1 (+)/ P7-2 (-)
* Software (ASW1 = 1)
Software (ASW1 = 0)
* Sw2-1: Off/ Sw2-2: Off
Sw2-1: On/ Sw2-2: Off
Sw2-1: On/ Sw2-2: On
None
PTC Thermistor
P11-1 (+)/ P11-2 (-)
Analog Voltage: 0 to +10V
Analog Voltage: 0 to +5V
Analog Current: 4 to 20mA
+5V Output
P11-3 (+)/ P11-4 (-)
P11-5 (+)/ P11-6 (-)
Analog Voltage: 0 to +10V
Analog Voltage: 0 to +5V
Analog Current: 4 to 20mA
+5V Output
* Sw2-3: Off/ Sw2-4: Off
Sw2-3: On/ Sw2-4: Off
Sw2-3: On/ Sw2-4: On
None
P11-7 (+)/ P11-8 (-)
P12-1 (+)/ P12-2 (-)
Analog Voltage: 0 to +10V
Analog Voltage: 0 to +5V
Analog Current: 4 to 20mA
+5V Output
* Sw2-5: Off/ Sw2-6: Off
Sw2-5: On/ Sw2-6: Off
Sw2-5: On/ Sw2-6: On
None
P12-3 (+)/ P12-4 (-)
P12-5 (+)/ P12-6 (-)
Analog Voltage: 0 to +10V
Analog Voltage: 0 to +5V
Analog Current: 4 to 20mA
+5V Output
* Sw2-7: Off/ Sw2-8: Off
Sw2-7: On/ Sw2-8: Off
Sw2-7: On/ Sw2-8: On
None
P12-7 (+)/ P12-8 (-)
P13-1 (+)/ P13-2 (-)
NTC Thermistor
* Software (ASW2 = 1)
Software (ASW2 = 0)
Sw2-9: On
PTC Thermistor
P13-3 (+)/ P13-4 (-)
P13-5 (+)/ P13-6 (-)
NTC Thermistor
NTC Scroll Thermister
NTC Thermistor
* Sw2-9: Off
Sw2-10: On
NTC Scroll Thermister
* Sw2-10: Off
* Default Setting
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iCOM Control Board Jumper Settings
Jumper
Type
Setting
* On: Shunt on Pins 1 & 2
Off: No Shunt
P19
Watchdog
CAN Bus
Terminator
On: Shunt on Pins 2 & 3
* Off: Shunt on Pins 1 & 2
P78
P83
Enabled: Shunt on Pins 1 & 2
* Disabled: No Shunt
Bootloader
* Default Setting
Large Display DIP Switch #3 Settings
Position
Type
Setting
Off
1
2
3
4
5
6
7
8
CAN Address
CAN Address
CAN Address
CAN Address
CAN Address
CAN Address
CAN Baud
Off
Off
Off
Off
Off
Off
CAN Baud
Off
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Large Display Jumper Settings
Jumper
Type
Setting
P3
Watchdog
* Shunt on Pins 1 & 2
Manual Contrast
(Rev. 1)
P4
* Shunt on Pins 2 & 3
P8
open
open
* open
* open
P13
P78
CAN Termination
* Shunt on Pins 2 & 3
Watchdog
(Rev. 2 Only)
P82
P83
* Shunt on Pins 1 & 2
* Shunt on Pins 2 & 3
Bootloader
* Default Setting
Small Display DIP Switch #3 Settings
Position
Type
Setting
Off
1
2
3
4
5
6
7
8
CAN Address
CAN Address
CAN Address
CAN Address
CAN Address
CAN Address
CAN Baud
Off
Off
Off
On
On
Off
CAN Baud
Off
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Small Display Jumper Settings
Type Setting
Jumper
Manual Contrast
(Rev. 2 only)
P4
* Shunt on Pins 2 & 3
P78
P80
CAN Termination
BDM Header
* Shunt on Pins 2 & 3
* open
Watchdog
(Rev. 2 Only)
P82
* Shunt on Pins 1 & 2
* Default Setting
Temperature/ Humidity Board DIP Switch #1 Settings
Position
Type
Setting
Off
Notes
1
2
3
4
CAN Address
CAN Address
CAN Address
CAN Address
On (if Sensor A)
On (if Sensor B)
On (if Sensor C)
open
Off
Off
Off
On (Normal &
Constant Operation)
5
6
CAN Address
Off (Analog Mode)
On (Analog Mode &
Constant Operation)
CAN Address Off (Normal Operation)
7
8
CAN Baud
CAN Baud
Off
Off
open
open
Temperature/ Humidity Board Jumper Settings
Jumper
P2
Type
Setting
* open
BDM Header
CAN Termination
Programming
P3
* Shunt on Pins 2 & 3
* open
P4
* Default Setting
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DS Systems:
P3: Not Used
P4: 24 VAC Power
P4-1: Fuse 1 (24 VAC)
P4-2: Fuse 2 (24 VAC)
P4-3: Fuse 3 (24 VAC)
P4-4: Fuse 4 (24 VAC)
P7: Fluid Sensor
P7-1: Aquastat Sensor
P7-2: Aquastat Sensor
P8: 24 VAC Alarm Inputs
P8-1: 24 VAC (RAD1/ TS 50)
P8-2: 24 VAC (RAD2/ TS 51)
P8-3: 24 VAC (RAD3/ TS 55)
P8-4: 24 VAC (RAD4/ TS 56)
P8-5: 24 VAC (HWA)
P8-6: 24 VAC Out (TS 24)
P8-7: 24 VAC Out (HWA)
P8-8: no connection
P11: Low Pressure Switch Circuits
P11-1: DCV Signal to LPT1
P11-2: Cold Start Bypass 1 Signal
P11-3: LPT1 Input to MP
P11-4:
P11-5: DCV Signal to LPT2
P11-6: Cold Start Bypass 1 Signal
P11-7: LPT2 Input to MP
P11-8:
P12: Analog Sensor Inputs
P12-1: T+ Analog 1 (TS 41)
P12-2: T- Analog 1 (TS 42)
P12-3: T+ Analog 2 (TS 43)
P12-4: T- Analog 2 (TS 44)
P12-5: T+ Analog 3 (TS 45)
P12-6: T- Analog 3 (TS 46)
P12-7: T+ Analog 4 (TS 47)
P12-8: T- Analog 4 (TS 48)
P13: DCV Thermistor Signals
P13-1: DCV Signal to Digital Scroll Thermistor 1
P13-2: DCV Signal from Digital Scroll Thermistor 1
P13-3: DCV Signal to Digital Scroll Thermistor 2
P13-4: DCV Signal from Digital Scroll Thermistor 2
P13-5: DCV Signal to Customer Thermistor
P13-6: DCV Signal from Customer Thermistor
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P22: Glycool Valve (Std. Pressure Actuator)
P22-1: 24 VAC Out (Close Q18)
P22-4: DCV Signal
P22-2: DCV Signal
P22-3: 24 VAC Out (Open Q17)
P22-5: E2 (24 VAC Gnd)
P22-6: +5 VDC
P32: Compressor Devices
P32-1: 24 VAC Out (LLSV1)
P32-2: E1 (LLSV1)
P32-8:
P32-9:
24 VAC
24 VAC (HP1 Alarm)
P32-3: 24 VAC Out (LLSV2)
P32-4: 24 VAC Out (OL/ KL1/ HP1)
P32-5: 24 VAC Out (OL/ KL2/ HP2)
P32-6: 24 VAC (HP1)
P32-10: 24 VAC Out (C1)
P32-11: E1 (C1)
P32-12: 24 VAC Out (C2)
P32-13: E2 (C2)
P32-7: 24 VAC (HP2)
P33: Compressor Devices
P33-1: 24 VAC Out (CUV1/ DSV1)
P33-2: E1 (CUV1/ DSV1)
P33-3: E2 (LLSV2)
P33-4: 24 VAC Out (CUV2/ DSV2)
P33-5: E2 (CUV2/ DSV2)
P33-6: 24 VAC (OL/ KL1 Alarm)
P33-7:
P33-8:
P33-9:
P33-10:
P33-11:
P33-12:
24 VAC (OL/ KL2 Alarm)
24 VAC
24 VAC (HP2 Alarm)
P34: Reheat Devices
P34-1: 24 VAC Out (RS1/ RS2/ RS3) P34-7:
no connection
P34-2: E3 (RS1/ RS2/ RS3)
P34-3: E3 (GCD/ BR)
P34-8:
P34-9:
24 VAC Out (RH3)
no connection
P34-4: 24 VAC Out (RH1/ HGRS)
P34-5: no connection
P34-10: E3 (RH1/ HGRS/ RH2/ RH3)
P34-11: no connection
P34-6: 24 VAC Out (RH2)
P34-12: 24 VAC Out (GCD/ BR)
P35: Infrared Humidifier Devices
P35-1: 24 VAC Out (H)
P35-2: E3 (H)
P35-4: E4 (HMV)
P35-5: E3 (HS3)
P35-3: 24 VAC Out (HMV)
P35-6: 24 VAC Out (HS3)
P36: Basic Unit Connections
P36-1: 24 VAC Out (Filter Clog)
P36-2: 24 VAC (Filter Clog Alarm)
P36-3: 24 VAC Out (MF)
P36-4: 24 VAC Out (AS Switch)
P36-5: 24 VAC (AS Alarm)
P36-6: 24 VAC (MF Ovld Alarm)
P36-7: 24 VAC
P36-9:
P36-10: E2
no connection
P36-11: No connection
P36-12: No connection
P36-13: K3 (Common: TB75)
P36-14: K3 (N.O.: TB76/ R3)
P36-15: K3 (N.C.)
P36-8: E4 (MF)
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P38: Smoke Detector
P38-1: 24 VAC Out SDC)
P38-2: E4 (SDC)
P38-3: 24 VAC (RAD1)
P38-4: no connection
P39: Firestat & Remote Shutdown
P39-1: 24 VAC Out (HTS)
P39-3: 24 VAC Out (RDS1)
P39-2: 24 VAC Return (HTS)
P39-4: 24 VAC Return (RSD1)
P40: Basic Unit Connections
P40-1: no connections
P40-2: no connections
P40-3: no connections
P40-8:
P40-9:
P40-10: E4
E4 (Opt. CPAR)
no connection
P40-4: 24 VAC Out (Opt. CPAR) P40-11: no connection
P40-5: no connections
P40-6: no connections
P40-7: no connections
P40-12: 24 VAC Out (MF Ovld)
P40-13: 24 VAC
P43: T6 Transformer
P43-1: 24 VAC Gnd
P43-2: 24 VAC
P51: Hot Water Reheat
P51-1: 24 VAC Out
P51-2: -5 VDC Gnd
P51-3: H.W. Mod (0 – 2.5 VDC)
P51-4: 24 VAC Gnd (E1)
P52: Glycool Valve (Opt. Pressure Modulating)
P52-1: 24 VAC Out
P52-4: 24 VAC Gnd (E1)
P52-2: -5 VDC Gnd
P52-5: no connection
P52-3: Mod Valve (0 – 2.5 VDC)
P53:
P53-1: 24 VAC
P53-2: no connection
P53-3: no connection
P53-4: E3
P53-5: no connection
P54:
P54-1: 24 VAC
P54-2: no connection
P54-3: no connection
P54-4: E3
P54-5: no connection
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P67: Temperature/ Humidity Sensors
P67-1:
P67-6:
P16-3:
P16-4:
P65: Site Monitoring Signals – No Intelleslot Supplied
P65-1: +5 VDC to TS 78
P65-2: -5 VDC to TS 77
P65: Optional Intelleslot Power Suplly
P65-1:
P65-2:
P65-3:
P65-4:
P64: Unit Large Display (Digital Signals)
P66: Unit Small Display (Digital Signals)
TB1: 24 VAC
TB1-1: 24 VAC (T2)
TB1-2: 24 VAC (T3)
TB1-3: 24 VAC (T4)
TB1-4: 24 VAC (T5)
TB1-5: E1 (G2)
TB1-6: E2 (G3)
TB1-7: E3 (G4)
TB1-8: E4 (G5)
E1/ E2/ E3/ E4: Transformer Grounds
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Fuse Board Layout: All Units
This section deals with the seven (7) plug connectors on the fuse board. The fuse
board is supplied on all systems with iCOM and is located in the low voltage
section of the unit. The tables in this section show all of the connections and
reference points for signal flow through these connectors.
Fuse Board
P4: 24 VAC Power
P4-1: Fuse 1
P4-2: Fuse 2
P4-3: Fuse 3
P4-4: Fuse 4
P24: T1 Transformer
P24-1: 24 VAC Gnd (T1)
P24-2: 24 VAC (T1)
P41: 24 VAC Power
P41-1: 24 VAC Gnd (T1)
P41-2: 24 VAC (T1)
P41-3: 24 VAC Gnd (not unit ground)
P41-4: 24 VAC
P42: Intelleslot
P42-1: 24 VAC Gnd (not unit ground)
P42-2: 24 VAC
P43: T6 Transformer
P43-1: 24 VAC Gnd (not unit ground)
P43-2: 24 VAC
P44: Jumper
E1: Transformer Secondary Ground (unit ground)
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Temperature/ Humidity Board: All Units
This section deals with the single plug connection located on the system
temperature and humidity board. The temperature/ humidity board is supplied on
all systems with iCOM controls. The cable is plugged into Plug P67 on the unit
microprocessor board and transmits information using “CAN” – Controlled Area
Network communication. Troubleshooting is accomplished by observing an LED
located on the board. If the LED is glowing the board is good. The temperature
and humidity board is typically located in the unit return.
Humidity
Sensor
Temperature
Sensor
Power
Supply
CAN Bus Connectors
Temperature/ Humidity Board
P67: Return Air Temperature/ Humidity Board
P67-1: CAN communication
P67-6: CAN communication
Temperature/ Humidity Assembly Housing
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NOTES
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Chapter 4
General Troubleshooting Data
* Basic Operation of the Opto and Triac
* Troubleshooting the Opto-Isolator and Triac
* Control Input Check (Sensors)
* Frequency Conversion Chart (Temperature)
* Frequency Conversion Chart (Humidity)
* Troubleshooting Signals and Checklist
* Moisture Content Charts
This section covers only very basic electronics. The major components, such as
triacs and opto-isolators are briefly described and related to the Liebert units you
have come to study. It is our hope that this brief introduction to electronics
stimulates your interest and encourages you to go further in the field.
The path of a signal from beginning to the end - using the four block process.
T/H
C P U
INPUT
MICRO
OUTPUT
LOAD
MEMORY
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The temperature sensor senses a rise in temperature. The rise is transmitted to
the Central Processing Unit (CPU). The CPU looks into its memory for information
and instructions on what to do with the rise in temperature. The CPU then makes
the decision to call for cooling.
Isolation
We use the opto-isolator and the triac to isolate areas of control and voltage.
There are three areas of control and two voltage levels. Digital control comes from
the microprocessor at 5 VDC and the other voltage level is 24 VAC. One voltage
is used to turn on the triac and the other is used to operate the load device.
DIGITAL
CONTROL
POWER
Processor
5 VDC Signal
Transformer
Power 24 VAC
TRIAC
OPTO
Load
Device
Transformer
5 VDC
Power 24 VAC
Ground
ISOLATION
ISOLATION
Areas of Control
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BASIC OPERATION OF THE TRIAC
To better understand the operation of the triac, we need to look at the movement
of electrons in a special type of material used in electronics. Here we have a
semiconductor material with what is called a depletion region. The depletion
region restricts the flow of electrons to a point.
+ + + +
+ + + +
+ + + +
- - - -
- - - -
- - - -
Depletion Region
Semiconductor
By forcing more electrons in to the depletion region, we can cause an overflow of
these electrons resulting in electron flow that in turn produces current. When we
have current flow, the device is on.
+ + + +
+ + + +
+ + + +
- - - -
- - - -
- - - -
Depletion Region
Semiconductor Showing No Movement of Electrons
If we add a third terminal to this simple device and call it the Gate, we have a basic
triac. By sending electrons to the gate, which is connected to the depletion region,
we create an overflow condition. You can see how this device can be turned on or
off by this process. Now to put this in perspective with AC voltage circuits, this ON
and OFF condition takes place every half cycle. When the AC voltage is removed
from the gate, conduction stops.
+++---
+++---
+++---
+++---
+++---
+ + + +
+ + + +
+ + + +
- - - -
- - - -
- - - -
- - -
+ + +
IN
OUT
GATE
Semiconductor Showing Movement of Electrons
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The triacs that Liebert uses are standard in the industry and are rated at a 2-amp
capacity. You can check these devices for proper operation while they are
connected in the circuit. If the load is removed from the device, you can get a
false reading from the meter. This is because the voltage potential is present and
is detected by the meter. When the load is applied to the device, the potential is
not detected by the meter. To test a triac for proper operation, energize the circuit
and connect the load.
O
Heat Sink
Body
Terminals
Front View
Left Side View
Front and Left Side Views of the Triac
As your view the triac from the front, the terminals are numbered as follows:
Terminal
Left
Connection
#2 Connects to the Load
Middle
Right
#1 Connects to the Transformer power
G(ate) Connects to the Opto-Isolator
Below is a simple schematic drawing for the triac using Liebert symbols.
24 VAC
Transformer
Power
Triac
2
Load
Device
1
G
6
4
2
1
Opto
Schematic Drawing for the Triac
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Basic Operation of the Opto-Isolator
The purpose of the opto-isolator is to provide isolation of two voltage sources.
This allows a DC voltage source to activate an AC voltage load device or allows
an AC voltage source to provide a DC signal.
We are working with two types of circuits, an input and an output. Therefore, we
require two types of opto-isolators (referred to as optos).
The output opto uses a DC voltage source to activate a Light Emitting Diode (LED)
internal to the IC chip. This causes a triac, also internal to the IC chip, to switch
ON allowing current to flow to the AC load device.
LED
LED
AC
Sourc
AC
Sourc
DC
Sourc
DC
Sourc
No Current Flow
Output Opto-Isolator
Current Flow
The input opto uses an AC voltage source to activate dual LEDs and turn on a
transistor to pass the DC voltage and allow current to flow.
Dual LEDs
Dual LEDs
DC
Sourc
DC
Sourc
AC
Sourc
AC
Sourc
No Current Flow
Current Flow
Input Opto-Isolator
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Troubleshooting the Output Opto-Isolator
The opto-isolator IC chips used in these circuits are the H11J (output) devices. The
drawing shows the pin location for component checks on the output opto. The
indented circle in the upper left hand corner of this chip indicates the location of Pin
1. Note that the number sequence is in a "U" format: downward 1, 2 and 3 on the
left and upward 4, 5 and 6 on the right.
1
6
2
3
5
4
Output Opto-Isolator Pin Location
OUTPUT VOLTAGE CHECK
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Receives the DC source voltage (3.3 VDC range)
Completes the DC source to the digital ground
No voltage signal at this point
Receives the AC source voltage signal from the input transformer
No voltage signal at this point
Completes the AC voltage path to the gate of the triac (24VAC)
Note that all AC source checks are referenced to the associated transformer
neutral and/or the safety ground, and that the DC source reference is to V- or
digital ground.
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Troubleshooting the Input Opto-Isolator
The opto-isolator IC chips used in these circuits are the H11AA (input) devices. The
pin location for component checks on the input opto. The indented circle in the
upper left hand corner of this chip indicates the location of Pin 1. Note that the
number sequence is in a "U" format: down 1 and 2 on the left and up 3 and 4 on
the right.
1
4
2
3
Input Opto-Isolator Pin Location
INPUT VOLTAGE CHECK
Receives the AC source voltage (This voltage is 24 VAC prior to the Opto
and is about 1.2 VAC at the opto).
Pin 1
Pin 2
Pin 3
Completes the AC source to the neutral and or safety ground.
Completes the DC source to the digital ground.
Receives the DC voltage source from the microprocessor (This voltage
level is 3.3 VDC when not activated and is 0 VDC when activated.)
Pin 4
Note that all AC source checks are referenced to the associated transformer
neutral and/or the safety ground, and that the DC source reference is to -V or
digital ground.
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Microprocessor Control Board: Typical Location othe
Opto-Isolators and Triacs
Input Opto-Islators
Output Opto-Isolators and Triacs
Microprocessor Control Board
Alarm Input Opto-Isolator Legend:
Opto
Purpose
Opto
Purpose
U15 Air Safety Switch
U16 Custom Alarm 1
U17 Custom Alarm 2
U18 High Water Alarm
U19 Custom Alarm 3
U20 Humidifier Problem
U21 Filter Clog switch
U22 Main Fan Overload
U23 Power On
U24 Compressor 2 Overload
U25 Low Pressure Switch 2
U26 High Head Pressure 2
U27 Compressor 1 Overload
U28 Low Pressure Switch 1
U29 High Head Pressure 1
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Note: Use Pin 5 on the input opto-isolator with reference to the V- terminal
for voltage check. The voltage level is 5 VDC.
Control Output Opto-Isolator Legend:
Opto
U1
Purpose
Reheat 1
Opto
Purpose
U10 Compressor 2
U2
Reheat 2
U11 Econ-O-Cycle Relay (R5)
U12 Liquid Line Solenoid 1
U13 Hot Gas Bypass 2
U14 Compressor 1
U3
Reheat 3
U4
Humidifier
U5
Main Fan
U8
Liquid Line Solenoid 2
Hot Gas Bypass 2
U17 CW Actuator
U9
U18 CW Actuator Close
Note: Use Pin 4 on the output opto-isolator with reference to the correct
transformer neutral/ ground. The voltage level is 24 VAC.
Control Output Triac Legend:
Opto
Purpose
Opto
Purpose
Q1 Reheat 1
Q10 Compressor 2
Q2 Reheat 2
Q11 Econ-O-Cycle Relay (R5)
Q12 Liquid Line Solenoid 1
Q13 Hot Gas Bypass 2
Q14 Compressor 1
Q3 Reheat 3
Q4 Humidifier
Q5 Main Fan
Q8 Liquid Line Solenoid 2
Q9 Hot Gas Bypass 2
Q17 CW Actuator
Q18 CW Actuator Close
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iCOM Diagnostics / Service Mode Program
The iCOM controller has a valuable tool built into software under the SERVICE
MENU. This program allows the user to evacuate and charge the refrigerant circuit
at installation, turn on/off all loads (outputs) for testing, and allows user to check all
inputs.
The procedure is as follows:
1- From the main screen select the SERVICE MENU parameters.
2- In the SERVICE MENU screen select the SERVICE icon.
3- Enter password and scroll to MANUAL MODE, select YES with the up key.
4- Now scroll to Fan On and select ON with the up key. The fan must be on to
operate loads in this mode. You must turn off the fan and service mode when
completed.
The Compressor 1 and 2 selections are for the ON/OFF and RUN, EVACUATE,
and CHARGE modes.
When user scrolls to the Compressor 1 or 2 positions in the parameters list he
must press enter to select the first item. Enter again will move the cursor to the
ON/OFF selection first (far right item) then using the up arrow key the compressor
may be turn on and down key will turn off. Now with the cursor on the ON/OFF
position, now use the right arrow key to select the RUN, EVACUATE, CHARGE
function and the up or down arrow key to make changes. The RUN selection is the
normal operating position.
Parameters list is found on pages in Chapter 2
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Basic Troubleshooting Steps:
Example: Unit load is not energizing.
Programming:
1. Read and record all program parameter values.
2. Read and record all DIP (control) switch positions on all boards. Check all
jumpers on each board, check for the CAN healthy light on the boards and
check programming per the read and record sheet in appropriate manuals to
verify selected options.
3. Turn Unit off with ON/OFF button and reboot system power (disconnect switch
off - on) to reconfigure system. If programming error is detected, recheck unit
for proper operation.
If problem is not resolved in programming section, begin the signal flow check.
Signal Flow Check: Assumption is the unit is calling for a mechanical operation
but the load is not activated. Using the appropriate control training and service
manual, identify the output opto-isolator to be checked, locate the opto-isolator on
the PCB and perform the following.
DC Voltage check:
1. Using a digital voltmeter check for the correct VDC signal at the output opto-
isolator. Pin 1 referenced to - VDC will show low VDC (approximately 1.2
VDC) if the microprocessor control side of the device is functioning. A high
VDC (approximately 3.3 VDC) indicates a microprocessor control problem. A
meter reading of 0 VDC indicates a loss of microprocessor voltage, check VDC
at the power supply referenced +VDC to -VDC should be approximately 3.3
VDC.
2. This check involves the microprocessor. To bypass the microprocessor
completely, jumper from Pin 2 on the output opto-isolator to -VDC. As soon as
the jumper is applied the load device should activate. If the load device
activates the problem is in the microprocessor itself or the programming. If the
load device does not activate continue the signal flow check.
AC Voltage check:
1. Place the digital VOM meter on AC voltage scale and verify that 24 VAC is
being applied to the output opto-isolator by placing the VOM between Pin 4
and the proper transformer ground connection. To verify that the switch leg of
the output opto-isolator is working properly place the VOM between Pin 6 and
the proper transformer ground connection. A high VAC (approximately 24
VAC) display indicates a closed switch leg; a low VAC indicates an open switch
leg.
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2. If the programming is correct and the output opto-isolator is functioning
properly but the load device is not activated the next step is to check the
triac and hard wiring to the load device. Verify that 24 VAC is being applied
to Pin 1 of the triac, place the VOM leads between Pin 1 and the proper
transformer ground connection. If 24 VAC is not present at Pin 1 of the
triac backtrack the circuit to the proper secondary hot of the control
transformer.
If 24 VAC is present perform the following:
Select the appropriate diagnostics function from the control menu; use the training
and service manual for reference. During the TEST OUTPUTS function the green
LED on the microprocessor should light. If the LED lights check the hardware from
the plug to the load device. If the LED does not light run the TEST CONTROL
BOARD diagnostics function. If board failure is displayed contact your local sales
office.
Note: Triacs are current limiting devices; therefore the load device must be
connected to obtain valid voltage readings when doing VOM checks and circuit
troubleshooting. Repair or replace any missing or defective components in the
circuit.
Mechanical Problems: If the failure of the load device to activate is determined
to be mechanical in nature consult the appropriate Liebert system operation and
maintenance, reference the individual component manufacturers literature or
contact your local Liebert representative.
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Moisture Content Charts
The following charts show moisture content of various levels of relative humidity
given temperatures. Follow the procedures below to use the charts:
for
STEP 1: Locate the chart for the temperature with which you are working.
STEP 2: Locate the line with the relative humidity with which you are
working.
STEP 3: Read the moisture content of the relative humidity in either grains
per cubic foot or grains per pound of air.
For example, you have a room temperature of 70°F and 50% relative humidity.
STEP 1: Locate the chart for 70°F.
STEP 2: Locate the line with relative humidity 50%.
STEP 3: Read the moisture content value of 50% relative humidity (4.0275
grains per cubic foot of air OR 55.86143 grains per pound of air).
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Moisture Content at Temperature = 80°F (26.7ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
3.864
3.9744
4.0848
4.1952
4.3056
4.416
53.59368
55.12493
56.65618
58.18743
59.71868
61.24992
62.78116
64.31241
65.84367
67.37492
68.90616
70.43741
71.96865
73.4999
4.5264
4.6368
4.7472
4.8576
4.968
5.0784
5.1888
5.2992
5.4096
5.52
75.03115
76.5624
5.6304
5.7408
5.8512
5.9616
6.072
78.09365
79.6249
81.15615
82.68739
84.21864
85.74989
87.28112
88.81239
90.34362
91.87488
93.40612
94.93738
96.46862
97.99987
99.53111
6.1824
6.2928
6.4032
6.5136
6.624
6.7344
6.8448
6.9552
7.0656
7.176
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Moisture Content at Temperature = 79°F (26.1ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
3.7485
3.8556
3.9627
4.0698
4.1769
4.284
51.9917
53.47717
54.96265
56.44813
57.9336
59.41908
60.90456
62.39004
63.87551
65.36099
66.84647
68.33194
69.81742
71.3029
4.3911
4.4982
4.6053
4.7124
4.8195
4.9266
5.0337
5.1408
5.2479
5.355
72.78838
74.27385
75.75933
77.2448
5.4621
5.5692
5.6763
5.7834
5.8905
5.9976
6.1047
6.2118
6.3189
6.426
78.73028
80.21575
81.70123
83.18671
84.67218
86.15767
87.64314
89.12862
90.6141
6.5331
6.6402
6.7473
6.8544
6.9615
92.09958
93.58504
95.07052
96.55601
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Moisture Content at Temperature = 78°F (25.6ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
3.633
50.38971
51.82942
53.26913
54.70883
56.14854
57.58824
59.02795
60.46765
61.90736
63.34707
64.78677
66.22648
67.66618
69.10589
70.5456
3.7368
3.8406
3.9444
4.0482
4.152
4.2558
4.3596
4.4634
4.5672
4.671
4.774801
4.8786
4.9824
5.0862
5.19
71.9853
5.2938
5.3976
5.5014
5.605201
5.709
73.425
74.86471
76.30441
77.74413
79.18383
80.62335
82.06325
83.50295
84.94265
86.38236
87.82207
89.26176
90.70148
92.14118
93.58089
5.812801
5.9166
6.0204
6.1242
6.228
6.3318
6.4356
6.5394
6.6432
6.747
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Moisture Content at Temperature = 77°F (25.0ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
3.521
48.83628
50.2316
3.6216
3.7222
3.8228
3.9234
4.024
51.62691
53.02224
54.41756
55.81288
57.20821
58.60353
59.99885
61.39417
62.78949
64.18481
65.58013
66.97546
68.37078
69.7661
4.124601
4.2252
4.3258
4.4264
4.527
4.6276
4.7282
4.8288
4.9294
5.03
5.1306
5.2312
5.3318
5.4324
5.533001
5.6336
5.734201
5.8348
5.935401
6.036001
6.136601
6.237201
6.3378
6.438401
6.539
71.16143
72.55674
73.95206
75.34738
76.74271
78.13803
79.53336
80.92868
82.32401
83.71933
85.11465
86.50996
87.90529
89.30061
90.69593
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Moisture Content at Temperature = 76°F (24.4ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
3.41215
3.50964
3.60713
3.70462
3.80211
3.8996
47.32652
48.67871
50.03089
51.38307
52.73527
54.08745
55.43964
56.79182
58.14401
59.4962
3.99709
4.09458
4.19207
4.28956
4.38705
4.48454
4.58203
4.67952
4.77701
4.8745
60.84838
62.20057
63.55276
64.90494
66.25713
67.60931
68.9615
4.97199
5.06948
5.16697
5.26446
5.36195
5.45944
5.55693
5.65442
5.75191
5.8494
70.31368
71.66587
73.01805
74.37024
75.72243
77.07461
78.4268
79.77898
81.13118
82.48336
83.83555
85.18773
86.53992
87.8921
5.94689
6.04438
6.14187
6.23936
6.336849
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Moisture Content at Temperature = 75°F (23.9ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
3.3068
45.86532
47.17575
48.48619
49.79663
51.10707
52.4175
3.40128
3.49576
3.59024
3.68472
3.7792
3.87368
3.96816
4.06264
4.15712
4.251601
4.34608
4.44056
4.53504
4.62952
4.724
53.72794
55.03838
56.34882
57.65926
58.9697
60.28013
61.59057
62.901
64.21145
65.52188
66.83231
68.14276
69.45319
70.76363
72.07407
73.38451
74.69495
76.00539
77.31581
78.62625
79.9367
4.81848
4.91296
5.00744
5.10192
5.1964
5.29088
5.38536
5.479841
5.57432
5.6688
5.76328
5.85776
5.95224
6.04672
6.1412
81.24713
82.55757
83.86801
85.17844
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Moisture Content at Temperature = 74°F (23.3ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
3.20355
3.29508
3.38661
3.47814
3.56967
3.6612
44.43324
45.70276
46.97228
48.2418
49.51132
50.78085
52.05037
53.31989
54.58941
55.85893
57.12845
58.39797
59.66749
60.93701
62.20654
63.47605
64.74558
66.0151
3.75273
3.84426
3.93579
4.02732
4.11885
4.21038
4.30191
4.39344
4.48497
4.5765
4.66803
4.75956
4.85109
4.94262
5.03415
5.12568
5.21721
5.30874
5.40027
5.4918
67.28461
68.55414
69.82366
71.09318
72.3627
73.63223
74.90173
76.17126
77.44079
78.7103
5.58333
5.67486
5.76639
5.85792
5.94945
79.97983
81.24935
82.51887
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Moisture Content at Temperature = 73°F (22.8ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
3.10345
3.19212
3.28079
3.36946
3.45813
3.5468
43.04485
44.2747
45.50456
46.73441
47.96426
49.19412
50.42397
51.65382
52.88367
54.11352
55.34338
56.57323
57.80309
59.03294
60.26279
61.49264
62.72249
63.95235
65.1822
3.63547
3.72414
3.81281
3.90148
3.99015
4.07882
4.16749
4.25616
4.34483
4.4335
4.52217
4.61084
4.69951
4.78818
4.87685
4.96552
5.05419
5.14286
5.23153
5.3202
66.41206
67.64191
68.87176
70.10161
71.33146
72.56132
73.79117
75.02102
76.25087
77.48073
78.71058
79.94044
5.40887
5.49754
5.58621
5.67488
5.76355
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Moisture Content at Temperature = 72°F (22.2ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
2.9988
41.59336
42.78174
43.97012
45.1585
3.08448
3.17016
3.25584
3.34152
3.4272
46.34688
47.53527
48.72365
49.91203
51.10041
52.28879
53.47717
54.66555
55.85393
57.04232
58.2307
3.51288
3.59856
3.68424
3.76992
3.8556
3.94128
4.02696
4.11264
4.19832
4.284
59.41908
60.60746
61.79584
62.98422
64.17261
65.36099
66.54937
67.73775
68.92613
70.11452
71.30289
72.49128
73.67966
74.86805
76.05642
77.2448
4.36968
4.45536
4.54104
4.62672
4.7124
4.79808
4.88376
4.96944
5.05512
5.1408
5.22648
5.31216
5.39784
5.48352
5.5692
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Moisture Content at Temperature = 71°F (21.7ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
2.91165
2.99484
3.07803
3.16122
3.24441
3.3276
40.38459
41.53843
42.69228
43.84613
44.99997
46.15381
47.30766
48.46151
49.61535
50.7692
3.41079
3.49398
3.57717
3.66036
3.74355
3.82674
3.90993
3.99312
4.07631
4.1595
51.92304
53.07688
54.23073
55.38458
56.53842
57.69227
58.84611
59.99996
61.1538
4.24269
4.32588
4.40907
4.49226
4.57545
4.65864
4.74183
4.825021
4.908211
4.9914
62.30765
63.46149
64.61533
65.76918
66.92304
68.07688
69.23072
70.38457
71.53841
72.69226
73.8461
5.07459
5.15778
5.240971
5.32416
5.40735
74.99994
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Moisture Content at Temperature = 70°F (21.1ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
2.81925
2.8998
39.103
40.22023
41.33746
42.45469
43.57192
44.68914
45.80637
46.9236
2.98035
3.0609
3.14145
3.222
3.30255
3.3831
3.46365
3.5442
48.04083
49.15806
50.27529
51.39252
52.50975
53.62697
54.7442
3.62475
3.7053
3.78585
3.8664
3.94695
4.0275
55.86143
56.97866
58.09588
59.21311
60.33035
61.44757
62.5648
4.10805
4.1886
4.269151
4.349701
4.43025
4.510801
4.59135
4.6719
63.68203
64.79925
65.91648
67.03371
68.15094
69.26818
70.3854
4.75245
4.833
4.91355
4.994101
5.074651
5.1552
71.50263
72.61986
5.23575
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Moisture Content at Temperature = 69°F (20.6ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
2.7293
37.85539
38.93697
40.01856
41.10014
42.18173
43.2633
2.80728
2.88526
2.96324
3.04122
3.1192
3.19718
3.27516
3.35314
3.43112
3.5091
44.34489
45.42647
46.50805
47.58964
48.67122
49.7528
3.58708
3.66506
3.74304
3.82102
3.899
50.83438
51.91596
52.99755
54.07913
55.16072
56.2423
3.97698
4.05496
4.13294
4.21092
4.2889
57.32389
58.40546
59.48704
60.56863
61.65021
62.73179
63.81338
64.89496
65.97653
67.05811
68.1397
4.36688
4.44486
4.52284
4.60082
4.6788
4.75678
4.83476
4.91274
4.99072
5.0687
69.22128
70.30286
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Moisture Content at Temperature = 68°F (20.0ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
2.64985
2.72556
2.80127
2.87698
2.95269
3.0284
36.75342
37.80352
38.85362
39.90371
40.95381
42.00391
43.05401
44.10411
45.1542
3.10411
3.17982
3.25553
3.33124
3.40695
3.48266
3.55837
3.63408
3.70979
3.7855
46.2043
47.2544
48.30449
49.35459
50.40469
51.45479
52.50489
53.55499
54.60509
55.65518
56.70528
57.75538
58.80547
59.85557
60.90567
61.95576
63.00587
64.05596
65.10606
66.15616
67.20625
68.25635
3.86121
3.93692
4.01263
4.08834
4.16405
4.23976
4.31547
4.39118
4.46689
4.5426
4.61831
4.694021
4.76973
4.84544
4.92115
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Moisture Content at Temperature = 67°F (19.4ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
2.5578
35.47669
36.49031
37.50393
38.51755
39.53116
40.54479
41.5584
2.63088
2.70396
2.77704
2.85012
2.9232
2.99628
3.06936
3.14244
3.21552
3.2886
42.57202
43.58565
44.59926
45.61288
46.62651
47.64012
48.65374
49.66736
50.68098
51.6946
3.36168
3.43476
3.50784
3.58092
3.654
3.72708
3.80016
3.87324
3.94632
4.0194
52.70822
53.72184
54.73546
55.74908
56.7627
4.09248
4.16556
4.238641
4.31172
4.3848
57.77632
58.78994
59.80356
60.81718
61.8308
4.45788
4.53096
4.60404
4.67712
4.750201
62.84442
63.85804
64.87166
65.88528
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Moisture Content at Temperature = 66°F (18.9ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
2.4759
34.34073
35.3219
2.54664
2.61738
2.68812
2.75886
2.8296
36.30306
37.28422
38.26539
39.24655
40.22772
41.20888
42.19005
43.17121
44.15237
45.13354
46.1147
2.90034
2.97108
3.04182
3.11256
3.1833
3.25404
3.32478
3.39552
3.46626
3.537
47.09587
48.07703
49.05819
50.03935
51.02052
52.00168
52.98285
53.96401
54.94517
55.92634
56.9075
3.60774
3.67848
3.74922
3.81996
3.8907
3.96144
4.03218
4.10292
4.17366
4.2444
57.88866
58.86983
59.85099
60.83216
61.81332
62.79449
63.77564
4.31514
4.38588
4.45662
4.52736
4.5981
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Moisture Content at Temperature = 65°F (18.3ºC)
RH
Grains Per Cu Ft
Grains Per Lb.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
2.39575
2.4642
2.53265
2.6011
2.66955
2.738
33.22905
34.17846
35.12785
36.07726
37.02666
37.97606
38.92546
39.87486
40.82426
41.77366
42.72307
43.67247
44.62187
45.57127
46.52067
47.47008
48.41947
49.36888
50.31828
51.26768
52.21708
53.16648
54.11589
55.06528
56.01469
56.96409
57.91349
58.86289
59.81229
60.76169
61.7111
2.80645
2.8749
2.94335
3.0118
3.08025
3.1487
3.21715
3.2856
3.35405
3.4225
3.49095
3.5594
3.62785
3.6963
3.76475
3.8332
3.90165
3.9701
4.03855
4.107
4.17545
4.2439
4.31235
4.3808
4.44925
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Suction Transducer Information (Codes A124-A128)
%
psig
psia
volts barg bara
-2.31 -1.29
%
51
psig
62.2
psia
76.9
volts barg
bara
4.29 5.30
-33.5 -18.8
-31.6 -16.9
-29.7 -15.0
-27.8 -13.1
-26.0 -11.3
-24.1
-22.2
-20.3
-18.5
-16.6
-14.7
-12.8
-11.0
-9.1
-7.2
-5.3
-3.5
-1.6
0.3
2.2
4.1
5.9
0
2.55
2.6
2.65
2.7
2.75
2.8
2.85
2.9
2.95
3
3.05
3.1
3.15
3.2
3.25
3.3
3.35
3.4
3.45
3.5
3.55
3.6
3.65
3.7
3.75
3.8
3.85
3.9
3.95
4
4.05
4.1
0
1
2
3
4
5
6
7
8
9
0.05 -2.18 -1.16
0.1 -2.05 -1.03
0.15 -1.92 -0.90
0.2 -1.79 -0.78
0.25 -1.66 -0.65
0.3 -1.53 -0.52
0.35 -1.40 -0.39
0.4 -1.27 -0.26
0.45 -1.14 -0.13
64.1
65.9
67.8
69.7
71.6
73.4
75.3
77.2
79.1
80.9
82.8
84.7
78.8
80.6
82.5
84.4
86.3
88.1
90.0
91.9
93.8
95.6
97.5
99.4
4.42
4.55
4.67
4.80
4.93
5.06
5.19
5.32
5.45
5.58
5.71
5.84
5.97
6.10
6.23
6.36
6.48
6.61
6.74
6.87
7.00
7.13
7.26
7.39
7.52
7.65
7.78
7.91
8.04
8.16
8.29
8.42
8.55
8.68
8.81
8.94
5.43
5.56
5.69
5.82
5.95
6.08
6.21
6.33
6.46
6.59
6.72
6.85
6.98
7.11
7.24
7.37
7.50
7.63
7.76
7.89
8.02
8.14
8.27
8.40
8.53
8.66
8.79
8.92
9.05
9.18
9.31
9.44
9.57
9.70
9.82
9.95
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
-9.4
-7.5
-5.6
-3.8
-1.9
0.0
1.9
3.8
5.6
7.5
0.5 -1.01
0.55 -0.88
0.6 -0.75
0.65 -0.63
0.7 -0.50
0.75 -0.37
0.8 -0.24
0.85 -0.11
0.00
0.13
0.26
0.39
0.52
0.65
0.78
0.90
1.03
1.16
1.29
1.42
1.55
1.68
1.81
1.94
2.07
2.20
2.33
2.46
2.59
2.71
2.84
2.97
3.10
3.23
3.36
3.49
3.62
3.75
3.88
4.01
4.14
4.27
4.40
4.52
4.65
4.78
4.91
5.04
5.17
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
86.6 101.3
88.4 103.1
90.3 105.0
92.2 106.9
94.1 108.8
95.9 110.6
97.8 112.5
99.7 114.4
101.6 116.3
103.4 118.1
105.3 120.0
107.2 121.9
109.1 123.8
110.9 125.6
112.8 127.5
114.7 129.4
116.6 131.3
118.4 133.1
120.3 135.0
122.2 136.9
124.1 138.8
125.9 140.6
127.8 142.5
129.7 144.4
131.6 146.3
133.4 148.1
135.3 150.0
137.2 151.9
139.1 153.8
140.9 155.6
142.8 157.5
144.7 159.4
146.6 161.3
148.4 163.1
150.3 165.0
152.2 166.9
154.1 168.8
9.4
11.3
13.1
15.0
16.9
18.8
20.6
22.5
24.4
26.3
28.1
30.0
31.9
33.8
35.6
37.5
39.4
41.3
43.1
45.0
46.9
48.8
50.6
52.5
54.4
56.3
58.1
60.0
61.9
63.8
65.6
67.5
69.4
71.3
73.1
75.0
0.9
0.95
1
0.02
0.15
0.28
0.41
0.54
0.67
0.80
0.93
1.05
1.18
1.31
1.44
1.57
1.70
1.83
1.96
2.09
2.22
2.35
2.48
2.61
2.74
2.86
2.99
3.12
3.25
3.38
3.51
3.64
3.77
3.90
4.03
4.16
1.05
1.1
1.15
1.2
7.8
9.7
11.6
13.4
15.3
17.2
19.1
20.9
22.8
24.7
26.6
28.4
30.3
32.2
34.1
35.9
37.8
39.7
41.6
43.4
45.3
47.2
49.1
50.9
52.8
54.7
56.6
58.4
60.3
1.25
1.3
1.35
1.4
1.45
1.5
1.55
1.6
4.15
4.2
4.25
4.3
4.35
4.4
1.65
1.7
1.75
1.8
1.85
1.9
1.95
2
9.07 10.08
9.20 10.21
9.33 10.34
9.46 10.47
9.59 10.60
9.72 10.73
9.85 10.86
9.97 10.99
4.45
4.5
4.55
4.6
4.65
4.7
4.75
2.05
2.1
2.15
2.2
2.25
2.3
2.35
2.4
4.8 10.10 11.12
4.85 10.23 11.25
4.9 10.36 11.38
4.95 10.49 11.51
2.45
2.5
5
10.62 11.63
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Digital Scroll High Temperature Sensor Chart
NTC (Code S606 and S608)
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Unit Code Description
The iCOM controller uses a system parameters auto configuration methodology.
The unit will have a code on a serial tag displayed on the front of the electric
panel. This code when entered during the factory QA process will define unit
configuration and auto set various parameters for functionality. The sheets in the
back of this manual will allow the service technician to understand and be able to
enter this unit code manually if necessary through the control panel and
the FACTORY SETTINGS parameter. The parameter codes are listed in Chapter
as A001 to A011. The UNIT CODE ID numbers must be entered in groups of six at
a time. When all ID numbers of the UNIT CODE are entered user must select
A008 to “Send and Execute Unit Code” then verify parameter code A011 for a
“VALID” status. If UNIT CODE is missing or lost the unit will not start until the
correct code is entered and saved.
The UNIT CODE sheets will show a VALUE field on the left of the first page and
followed by 18 columns of unit configuration definitions.
THIS UNIT CODE IS NOT TO BE CHANGED UNLESS INSTRUCTED BY A
FACTORY SERVICE TECHNICIAN.
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Troubleshooting Checklist
1. Check the obvious before beginning troubleshooting.
A. Be sure that a remote control switch has not been shut off.
B. Be sure that the communication cable is properly connected.
C. Be sure that power is reaching all modules associated with the system.
2. Power down the entire unit during the process of removing or replacing any
component or cable.
A. Serious damage to components may result if this step is not taken.
B. After removal or replacement actions, power may be restored to the unit.
3. Wear a personal ground strap when handling printed circuit boards or
associated connecting cables. Static electricity, besides being annoying, can
damage delicate electronic components.
4. Protect exposed components from accidental contact by personnel or dropped
hardware or tools.
5. When checking voltage, use the correct reference (ground) points. The
chassis is not always the correct ground point, especially within the electronic
housing.
6. Reassemble modules correctly.
A. Observe assembled appearance prior to disassembly.
B. Replace all hardware (especially insulating or nylon hardware) in the same
places and in the same relationship as the original.
7. When advised to check and replace cables, do the following:
A. Inspect for damaged insulation, broken conductors, and/or loose
connectors.
B. Check continuity with an ohm meter (Flex cable while checking.).
C. Make certain that connectors mate firmly with proper receptacles.
8. When changing set points to cause a call for heating or cooling, set the points
at least 10°-15° above (for heating) or below (for cooling) the present room
temperature.
9. Bring the room temperature level to within the working range of the equipment
(35°-90°F) before attempting troubleshooting.
10. Bring the room humidity level to within the working range of the equipment
(35%-65%) before attempting troubleshooting.
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Glossary of Unit and System Parameters
User Menu
Code Setpoints
Type
Unit
Unit
Unit
Unit
U102 Temperature setpoint
U103 Humidity setpoint
U104 Predictive Humidity control
U105 Supply Limit
U106 Supply Limit Value
Graphics
Unit
Type
System
System
System
System
Unit
System temperature time scale
System temperature graph height
System humidity time scale
System humidity graph height
Unit temperature time scale
Unit temperature graph height
Unit humidity time scale
Unit
Unit
Unit humidity graph height
Code Set Alarms
U202 Std. Sensor Alarms
U203 High temperature
U204 Low temperature
U205 High humidity
Unit
Type
Unit
Unit
Unit
Unit
U206 Low humidity
Unit
U207 Sensor A Alarms
U208 High temperature sensor A
U209 Low temperature sensor A
U210 High humidity sensor A
U211 Low humidity sensor A
Unit
Unit
Unit
Unit
Unit
Code
Various Sensors
Type
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
U301 Actual temperature setpoint
U302 Actual humidity setpoint
U303 Optional sensor A temperature
U304 Optional sensor A humidity
U305 Optional sensor B temperature
U306 Optional sensor B humidity
U307 Optional sensor C temperature
U308 Optional sensor C humidity
U309 Glycol temperature
Unit
U310 DigiScroll 1 temperature
U311 DigiScroll 2 temperature
U312 Freecooling status
Unit
Unit
Unit
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Code Display Setup
U401 Language
U402 Date
Type
Display
Unit
U403 Time
Unit
U404 Temperature Indication
U405 Display contrast
U406 Buzzer Frequency
U407 Backlight off after x hours
U408 Screen:
U409 Display shows:
U410 Display View
Code Total Run Hours
U502 Fan Motor
Unit
Display
Display
Display
Display
Display
Display
Type
Unit
U502 Fan Motor Limit
U503 Compressor 1
U503 Compressor 1 Limit
U504 Compressor 2
U504 Compressor 2 Limit
U505 Freecooling
Unit
Unit
Unit
Unit
Unit
Unit
U505 Freecooling Limit
U506 Hotgas / Hotwater
U506 Hotgas / Hotwater Limit
U507 Electrical Heater 1
U507 Electrical Heater 1 Limit
U508 Electrical Heater 2
U508 Electrical Heater 2 Limit
U509 Electrical Heater 3
U509 Electrical Heater 3 Limit
U510 Humidifier
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
U510 Humidifier Limit
U511 Dehumidification
U511 Dehumidification Limit
Code Timer
Unit
Unit
Unit
Type
Unit
U603 Monday
U603 Tuesday
Unit
U603 Wednesday
Unit
U603 Thursday
Unit
U603 Friday
Unit
U603 Saturday
Unit
U603 Sunday
Unit
U605 From / to
Unit
U607 From / to
Unit
U609 Timer mode
Unit
U610 Timer Mode Type
U611 Deadband
Unit
Unit
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Code Service contacts
U703 Address line 1
U704 Address line 2
U705 Address line 3
U706 Address line 4
Type
System
System
System
System
Service Menu
Code Setpoints
Type
Unit
Unit
S102 Temperature setpoint
S103 Humidity setpoint
S104 Predictive Humidity control
S105 Supply Limit
Unit
Unit
S106 Supply Limit Value
Unit
S107 Autoset enable
Unit
S108 Temperature proportional band
S109 Temperature integration time
S110 Temperature deadband
S113 Humidity proportional band
S114 Humidity integration time
S115 Humidity deadband
Unit
Unit
Unit
Unit
Unit
Unit
S116 DT between Room / Glycol Type
S117 DT between Room / Glycol Value
S118 Min.Chilled Water Temp. Enable
S119 Min.Chilled Water Temp. Value
Code Standby settings / Lead-lag
S502 Number of standby units
S503 Rotation Frequency
Unit
Unit
Unit
Unit
Type
System
System
S504 Rotate at (hour)
S505 Rotate at (minute)
S506 Rotate by
S507 Perform one rotation
S508 Cascade units
Code Wellness / General Settings
S002 Maintenance frequency
S003 Max bonus
System
System
System
System
System
Type
System
System
System
System
System
System
System
S004 Max penalty
S005 Last maintenance
S006 Service engineer
S007 Reset
S008 Calculated next maintenance
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Fan Settings
S013 Number of starts
S014 Working hours
S015 Average working time
S016 Starts per day optimum
S017 Starts per day worst
S018 Number of alarms
S019 Actual bonus
Type
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Type
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Type
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Type
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Type
Unit
Unit
Unit
Unit
Unit
Unit
Compr. 1 Settings
S024 Number of starts
S025 Working hours
S026 Average working time
S027 Starts per day optimum
S028 Starts per day worst
S029 Number of HP alarms
S030 Number of LP alarms
S031 Number of TH alarms
S032 Number of HT alarms
S033 Actual bonus
Compr. 2 Settings
S035 Number of starts
S036 Working hours
S037 Average working time
S038 Starts per day optimum
S039 Starts per day worst
S040 Number of HP alarms
S041 Number of LP alarms
S042 Number of TH alarms
S043 Number of HT alarms
S044 Actual bonus
El. Heater 1 Settings
S046 Number of starts
S047 Working hours
S048 Average working time
S049 Starts per day optimum
S050 Starts per day worst
S051 Number of alarms
S052 Actual bonus
El. Heater 2 Settings
S057 Number of starts
S058 Working hours
S059 Average working time
S060 Starts per day optimum
S061 Starts per day worst
S062 Number of alarms
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S063 Actual bonus
El. Heater 3 Settings
Unit
Type
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Type
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Type
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
S068 Number of starts
S069 Working hours
S070 Average working time
S071 Starts per day optimum
S072 Starts per day worst
S073 Number of alarms
S074 Actual bonus
Humidifier Settings
S079 Number of starts
S080 Working hours
S081 Average working time
S082 Starts per day optimum
S083 Starts per day worst
S084 Number of alarms
S085 Actual bonus
Code Diagnostics / Service
S302 Manual Mode
S303 Unit Fan
S304 Compressor 1
S304 Compressor 1 (Mode)
S305 Compressor 1 capacity
S306 Compressor 1 cycle ramp
S307 Compressor 2
S307 Compressor 2 (Mode)
S308 Compressor 2 capacity
S309 Compressor 2 cycle ramp
S313 Heat 1
S314 Heat 2
S315 Heat 3
S324 Hum Fill
S325 Hum
S326 Alarm Relay
S327 R5
S328 3P actuator open
S329 3P actuator close
S330 Analog out 1
S331 Analog out 2
S332 Analog out 3
S333 Analog out 4
S335 Status Remote
S336 Status Air Sail
S337 Status Fan Overload
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S338 Status Filter
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Type
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Type
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
S339 Status Customer Input 1
S340 Status Customer Input 2
S341 Status Customer Input 3
S342 Status Customer Input 4
S343 HP 1 alarm counter per 12 hours
S344 HP 2 alarm counter per 12 hours
S346 Status HP 1
S347 Status LP 1
S348 Status TH 1
S349 Status HP 2
S350 Status LP 2
S351 Status TH 2
S352 Status Humidifier Problem
S353 Status DT 2
S354 Status Min CW
Code Set Alarms
S202 Std. Sensor Alarms
S203 High temperature
S204 Low temperature
S205 High humidity
S206 Low humidity
S207 Sensor A Alarms
S208 High temperature sensor A
S209 Low temperature sensor A
S210 High humidity sensor A
S211 Low humidity sensor A
S213 Customer Input 1
S214 Customer Input 1 active when
S215 Customer Input 2
S216 Customer Input 2 active when
S217 Customer Input 3
S218 Customer Input 3 active when
S219 Customer Input 4
S220 Customer Input 4 active when
Code Sensor Calibration
S602 Return temperature
S603 Calibrated Return temperature
S604 Return humidity
S605 Calibrated return humidity
S606 DigiScroll 1 NTC
S607 Calibrated DigiScroll 1 NTC
S608 DigiScroll 2 NTC
S609 Calibrated DigiScroll 2 NTC
S613 Temperature Sensor A
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S614 Calibrated Temp. Sensor A
S615 Humidity Sensor A
S616 Calibrated Humidity Sensor A
S617 Temperature Sensor B
S618 Calibrated Temp. Sensor B
S619 Humidity Sensor B
S620 Calibrated Humidity Sensor B
S624 Glycol Sensor PTC or NTC
S625 Glycol Sensor
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
S626 Calibrated Glycol Sensor
S627 Supply Sensor PTC or NTC
S628 Supply Sensor
Unit
Unit
Unit
S629 Calibrated Supply Sensor
S630 Temperature Sensor C
S631 Calibrated Temp. Sensor C
S632 Humidity Sensor C
S633 Calibrated Humidity Sensor C
Code System / Network Setup
S802 Number of connected units
S803 Teamwork Mode
S804 IP Address
S805 Netmask
S806 Gateway
S807 MAC
S808 U2U Address
S809 U2U Protocol
S810 U2U Group
S811 SW Version
S813 Monitoring Address
S814 Monitoring Protocol
S815 IP Address
Unit
Unit
Unit
Unit
Unit
Type
System
System
System
System
System
System
System
System
System
System
Unit
Unit
Unit
S816 Netmask
Unit
S817 Gateway
Unit
S818 MAC
Unit
S819 U2U Address
Unit
S820 U2U Protocol
Unit
S821 U2U Group
Unit
S822 SW Version
Unit
Code Options Setup
Type
Unit
Unit
S402 Compressor sequence
S403 Low pressure alarm delay
S404 Actual LP1 pressure
Unit
S405 Actual LP2 pressure
S406 Number of all heat stages
Unit
Unit
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S407 Electrical
S408 Hot water On/Off
S409 Hot gas
Unit
Unit
Unit
Unit
Unit
Unit
S410 3P actuator runtime
S411 3P actuator direction
S413 Humidification enabled
S414 Infrared Flush Rate
S415 Dehum enabled
S416 Electric reheat operation
Code Service contacts
S702 Country
S703 Address line 1
S704 Address line 2
S705 Address line 3
S706 Address line 4
Unit
Unit
Type
System
System
System
System
System
Advanced Menu
Code Factory Settings
A002 Unit Code Field: (01-06)
A003 Set Code: (01-06)
A004 Unit Code Field: (7-12)
A005 Set Code: (7-12)
Type
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
A006 Unit Code Field: (13-18)
A007 Set Code: (13-18)
A008 Send and Execute Unit Code
A009 Load and Execute XML Code
A010 Check XML Unit Code
A011 Status Unit Code
A102 Refrigerant Type
A103 Main Fan Overload
Loss of Airflow
A104
A105 Number of compressors
A106 Compressor delay time
A107 Compressor min on time
A108 Compressor min off time
A109 Pump down
Unit
Unit
System
System
Unit
A110 Capacity Ctrl.
Unit
A113 Digi Scroll Cycle
A114 High temperature Digi Scroll
A115 Digi Scroll switchback
A116 Low pressure device
Unit
Unit
Unit
Unit
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A117 Low pressure threshold Phase 1
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
A118 Low pressure threshold Phase 2
A124 LP1 sensor 0% =
A124 LP1 sensor 0% =
A125 LP1 sensor 100% =
A125 LP1 sensor 100% =
A126 Actual LP1 signal
A127 LP2 sensor 0% =
A127 LP2 sensor 0% =
A128 LP2 sensor 100% =
A128 LP2 sensor 100% =
A129 Actual LP2 signal
A130 Pump down cutout
A131 Pump down recycle
A132 Condenser Control
A135 CW flush
A136 CW flush duration
A137 Freecooling
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
A138 Freecooling flush
A139 Freecooling flush duration
A140 Freecooling flush starts R5
A141 CO + FC simultaneously
A142 Hot water flush
A143 Hot water flush duration
A146 Humidifier Model
A147 Humidity in Last xx Hours
A148 Prefill Time
A149 Fill Time
A150 Humidifier On Time
A151 Dehum with compressor
A152 Analog output 1
A153 Analog output 2
A154 Analog output 3
Unit
Unit
A155 Analog output 4
Unit
Code Access
Type
A201 Password Level 1 (User)
A202 Password Level 2 (Service)
A203 Password Level 3 (Advanced)
System
System
System
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Glossary of Terms
Address: A pattern of characters that identifies a unique storage location
Algorithm: A set of procedures to obtain a given result
Ambient: Condition on immediately surrounding atmosphere or area: usually
refers to temperature or pressure
Analog: Refers to circuitry; also called linear circuitry; circuitry that varies certain
properties or electricity continuously and smoothly over a range
Anti-Static Material: A slightly conductive material that allows the net charge to
be drained off through a path; an electrostatic protective material having a surface
resistively greater than 104 but not greater than 109 Ohms per square inch (does
not generate static electricity)
Binary Number System or Binary Code: A method of writing numbers by using
two digits, 0 and 1
Bit: The smallest possible piece of information; a specification of one of two
possible conditions. (Bits are written as 1 for yes and 0 for no.)
Bus: Large trace or foil extending around the edge of a PCB to provide
conduction for several sources
Byte: A set of adjacent binary digits operated upon as a unit (usually 8 bits)
Charge: The product of capacitance times voltage
CMOS: Complimentary Metal Oxide Substrate semiconductor
Computer: At least one CPU together with input, output, control switch buttons
and memory units
Conductive Material: Material that conducts electrical charge (Because it
conducts charge, there is no potential difference across or storage of a static
charge.); electrostatic protective material having a maximum surface resistivity of
10 Ohms per square unit, or a maximum volume resistivity of 10 Ohms/cm.
Control Buttons: Push buttons on the display bezels to operate the
increase/decrease, advance, or silence functions
Control Switches: Sometimes called dip switches and used for additional
programming features on all levels
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CPU: Central Processing Unit; the part of a computer system that contains the
main storage, arithmetic unit and special register groups (It performs arithmetic
operations, controls instruction processing and provides timing signals.)
Data: Another name for information
Data Bus: One method of input/output for a system where data is moved by way
of a group of wires forming a common bus
Decrease Button: Control button used to decrease values
Digital: Information in discrete or quantified form, not continuous
DIP: Dual Inline Package; a type of Integrated Circuit (IC)
DIP Switch: Type of electronic switch having multiple, manually selectable
settings
Earth ground: The portion of an electrical circuit that is at zero potential with
respect to the earth
Electrostatic Field: The field around an electrostatically charged object
Electrostatic Voltage: Voltage generated by the sliding, rubbing or separating
action between materials
EPROM: Erasable and Programmable Read-Only Memory; an integrated circuit
memory chip whose stored data can be read at random (Data can be erased and
new data can be stored.)
ESDS: ElectroStatic Discharge Sensitive; sensitive to electrostatic voltage of
4000 volts or less as determined by the human test circuit
Fill Period: The period during which the humidifier pan is filled from a partially
filled state to the level required for optimum humidification
Firmware: Software stored in EPROM or PROM
Hard Ground: A direct connection to earthground (also refer to soft ground)
Hardware: The PCB, cable, switches and associated devices
Hysteresis: Differential
IC: Integrated Circuit; an assembly that consists of all the necessary parts of an
electronic circuit
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Impedance: Opposition that a circuit offers to the flow of current through it,
measured in Ohms
Input: An incoming information signal
Isolation: Separation of one device or environment from the effects of an
adjacent or connected device or environment
Lead Compressor: Compressor coming on first as a result of a call for
Cooling 1
Lag Compressor: Compressor coming on second as a result of a call for Cooling
2
LED: Light Emitting Diode; a semiconductor that emits light when electric current
is passed through it by way of two terminals
Manual Override: A means of bypassing triac switches at all levels for manual
operation of system components for test or emergency
Memory: In a digital system, the part of the system where information is stored
Microprocessor: An Integrated Circuit (IC, or set of a few ICs) that can be
programmed with stored instructions to perform a wide variety of functions (A
microprocessor consists of at least a controller, some registers and some sort of
Arithmetic Logic Unit (ALU).
N-Type Semiconductor: Semiconductor crystal doped to have an excess of free
electrons with a predominately negative current carrying capacity (also referred to
as a P-Type Semiconductor).
Off Time: The time since humidification was last on
Output: An outgoing information signal
P-N-Junction: Interface boundary between two semiconductor regions with
differing electrical properties (Current only flows across the junction in the forward
direction if circuit voltage exceeds a certain threshold. Current cannot flow across
the junction in the reverse direction.)
P-Type Semiconductor: Semiconductor crystal doped for an excess of holes to
enable heavier positive current-carrying capacity (also referred to as an N-Type
Semiconductor).
PCB: Printed Circuit Board; made of insulating material with conducting paths
secured to one or both sides
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Prefill: The period of time between when the water begins to fill the pan and the
humidifier lamps turn on
Program: A set of instructions to achieve a certain result
PROM: Programmable Read-Only Memory; an Integrated Circuit (IC) memory
chip whose stored data can be read at random (The IC can be used only one
time.)
RAM: Random-Access Memory where work can be written (stored) or read
(recovered) in any order
Remote: Component(s) or control(s) located at a distance away from the main
components or controls
Reset: To return a control to its original position
ROM: Read-Only Memory: the location reserved for data permanently stored by
the manufacturer
Soft Ground: A connection to ground through an impedance sufficiently high to
limit current flow to safe levels for personnel (Impedance needed for a soft ground
is dependent upon the voltage levels that can be contacted by personnel near the
ground.)
Software: A set of computer programs, procedures and possible associated
documentation concerned with the operation of a data processing system
Static-Dissipative Material: Electrostatic protective material having surface
restiveness greater than 104 but not greater than 109 Ohms per square inch
Static-Shielding Material: Material that does not allow spark energy or
electrostatic fields to pass through or penetrate it
Surface Resistivity: An inverse measure of the conductivity of a material and
equal to the ratio of the potential gradient to the current per unit width of the
surface where the potential gradient is measured in the direction of current flow in
the material (Surface resistivity is numerically equal to the surface resistance
between two electrodes forming opposite sides of a square. The size of the
square is immaterial. Its value is measured in Ohms per square inch.)
Transformer: Electromagnetic device for changing the voltage of an AC circuit by
induction and/or isolating an AC circuit from its distribution
Triboelectric Effect: The generation of static electricity on an object by contact,
separation or friction
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Computer and Network Terms
Agent: A program that performs some information gathering or processing task in
the background. Typically, an agent is given a very small and well-defined task.
Although the theory behind agents has been around for some time, agents have
become more prominent with the recent growth of the Internet. Many companies
now sell software that enables you to configure an agent to search the Internet for
certain types of information.
In computer science, there is a school of thought that believes that the human
mind essentially consists of thousands or millions of agents all working in parallel.
To produce real artificial intelligence, this school holds, we should build computer
systems that also contain many agents and systems for arbitrating among the
agents' competing results.
BOOTP: Short for Bootstrap Protocol, an Internet protocol that enables a diskless
workstation to discover its own IP address, the IP address of a BOOTP server on
the network, and a file to be loaded into memory to boot the machine. This
enables the workstation to boot without requiring a hard or floppy disk drive. The
protocol is defined by RFC 951.
Cookie: A message given to a Web browser by a Web server. The browser
stores the message in a text file called cookie.txt. The message is then sent back
to the server each time the browser requests a page from the server. The main
purpose of cookies is to identify users and possibly prepare customized Web
pages for them. When you enter a Web site using cookies, you may be asked to
fill out a form providing such information as your name and interests. This
information is packaged into a cookie and sent to your Web browser who stores it
for later use. The next time you go to the same Web site, your browser will send
the cookie to the Web server. The server can use this information to present you
with custom Web pages. So, for example, instead of seeing just a generic
welcome page you might see a welcome page with your name on it.
DHCP: Short for Dynamic Host Configuration Protocol, a protocol for assigning
dynamic IP addresses to devices on a network. With dynamic addressing, a
device can have a different IP address every time it connects to the network. In
some systems, the device's IP address can even change while it is still connected.
DHCP also supports a mix of static and dynamic IP addresses.
Dynamic addressing simplifies network administration because the software keeps
track of IP addresses rather than requiring an administrator to manage the task.
This means that a new computer can be added to a network without the hassle of
manually assigning it a unique IP address. Many ISPs use dynamic IP addressing
for dial-up users. DHCP client support is built into Windows 95 and NT
workstation. NT 4 server includes both client and server support.
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Ethernet: A local-area network (LAN) architecture developed by Xerox
Corporation in cooperation with DEC and Intel in 1976. Ethernet uses a bus or
star topology and supports data transfer rates of 10 Mbps. The Ethernet
specification served as the basis for the IEEE 802.3 standard, which specifies the
physical and lower software layers. Ethernet uses the CSMA/CD access method
to handle simultaneous demands. It is one of the most widely implemented LAN
standards.
A newer version of Ethernet, called 100Base-T (or Fast Ethernet), supports data
transfer rates of 100 Mbps. And the newest version, Gigabit Ethernet supports
data rates of 1 gigabit (1,000 megabits) per second.
Internet: A global network connecting millions of computers. More than 100
countries are linked into exchanges of data, news and opinions. Unlike online
services, which are centrally controlled, the Internet is decentralized by design.
Each Internet computer, called a host, is independent. Its operators can choose
which Internet services to use and which local services to make available to the
global Internet community. Remarkably, this anarchy by design works exceedingly
well. There are a variety of ways to access the Internet. Most online services,
such as America Online, offer access to some Internet services. It is also possible
to gain access through a commercial Internet Service Provider (ISP).
IP address: An identifier for a computer or device on a TCP/IP network.
Networks using the TCP/IP protocol route messages based on the IP address of
the destination. The format of an IP address is a 32-bit numeric address written as
four numbers separated by periods. Each number can be zero to 255. For
example, 1.160.10.240 could be an IP address. Within an isolated network, you
can assign IP addresses at random as long as each one is unique. However,
connecting a private network to the Internet requires using registered IP addresses
(called Internet addresses) to avoid duplicates.
The four numbers in an IP address are used in different ways to identify a
particular network and a host on that network. The InterNIC Registration Service
assigns Internet addresses from the following three classes.
• Class A - supports 16 million hosts on each of 127 networks
• Class B - supports 65,000 hosts on each of 16,000 networks
• Class C - supports 254 hosts on each of 2 million networks
The number of unassigned Internet addresses is running out, so a new classless
scheme called CIDR is gradually replacing the system based on classes A, B, and
C and is tied to adoption of IPv6.
Network: A group of two or more computer systems linked together. There are
many types of computer networks, including:
• local-area networks (LANs): The computers are geographically close
together (that is, in the same building).
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• wide-area networks (WANs): The computers are farther apart and are
connected by telephone lines or radio waves.
• campus-area networks (CANs): The computers are within a limited
geographic area, such as a campus or military base.
• metropolitan-area networks MANs): A data network designed for a town or
city.
• home-area networks (HANs): A network contained within a user's home
that connects a person's digital devices.
In addition to these types, the following characteristics are also used to categorize
different types of networks:
• topology: The geometric arrangement of a computer system. Common
topologies include a bus, star, and ring. See the Network topology
diagrams in the Quick Reference section.
• protocol: The protocol defines a common set of rules and signals that
computers on the network use to communicate. One of the most popular
protocols for LANs is called Ethernet. Another popular LAN protocol for
PCs is the IBM token-ring network .
• architecture: Networks can be broadly classified as using either a peer-to-
peer or client/server architecture.
Computers on a network are sometimes called nodes. Computers and devices
that allocate resources for a network are called servers.
Network cross-over cable: A specially designed cable tin which the receive and
transmit lines (input and output) are crossed. Used to connect two computers
together or hubs. Also called a null modem cable using either RS-232 port
connectors or RJ-45 connectors.
Network interface card: Often abbreviated as NIC, an expansion board you
insert into a computer so the computer can be connected to a network. Most NICs
are designed for a particular type of network, protocol, and media, although some
can serve multiple networks.
Null-modem cable: A specially designed cable that allows you to connect two
computers directly to each other via their communications ports (RS-232 ports).
Null modems are particularly useful with portable computers because they enable
the portable computer to exchange data with a larger system.
Protocol: An agreed-upon format for transmitting data between two devices. The
protocol determines the following:
• the type of error checking to be used
• data compression method, if any
• how the sending device will indicate that it has finished sending a message
• how the receiving device will indicate that it has received a message
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There are a variety of standard protocols from which programmers can choose.
Each has particular advantages and disadvantages; for example, some are
simpler than others, some are more reliable, and some are faster. From a user's
point of view, the only interesting aspect about protocols is that your computer or
device must support the right ones if you want to communicate with other
computers. The protocol can be implemented either in hardware or in software.
RJ-45: Short for Registered Jack-45, an eight-wire connector used commonly to
connect computers onto a local-area networks (LAN), especially Ethernets. RJ-
45 connectors look similar to the ubiquitous RJ-11 connectors used for
connecting telephone equipment, but they are somewhat wider.
SNMP: Short for Simple Network Management Protocol, a set of protocols for
managing complex networks. The first versions of SNMP were developed in the
early 80s. SNMP works by sending messages, called protocol data units (PDUs),
to different parts of a network. SNMP-compliant devices, called agents, store data
about themselves in Management Information Bases (MIBs) and return this data to
the SNMP requesters.
SNMP 1 reports only whether a device is functioning properly. The industry has
attempted to define a new set of protocols called SNMP 2 that would provide
additional information, but the standardization efforts have not been successful.
Instead, network managers have turned to a related technology called RMON that
provides more detailed information about network usage.
TCP/IP: Abbreviation for Transmission Control Protocol/Internet Protocol, the
suite of communications protocols used to connect hosts on the Internet. TCP/IP
uses several protocols, the two main ones being TCP and IP. TCP/IP is built into
the UNIX operating system and is used by the Internet, making it the de facto
standard for transmitting data over networks. Even network operating systems
that have their own protocols, such as NetWare, also support TCP/IP.
10BaseT: One of several adaptations of the Ethernet (IEEE 802.3) standard for
Local Area Networks (LANs). The 10Base-T standard (also called Twisted Pair
Ethernet) uses a twisted-pair cable with maximum lengths of 100 meters. The
cable is thinner and more flexible than the coaxial cable used for the 10Base-2 or
10Base-5 standards. Cables in the 10Base-T system connect with RJ-45
connectors. A star topology is common with 12 or more computers connected
directly to a hub or concentrator. The 10Base-T system operates at 10 Mbps and
uses baseband transmission methods.
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Understanding IP Addressing: Every computer that communicates over the
Internet is assigned an IP address that uniquely identifies the device and
distinguishes it from other computers on the Internet. An IP address consists of 32
bits, often shown as 4 octets of numbers from 0-255 represented in decimal form
instead of binary form. For example, the IP address 168.212.226.204 in binary
form is: 10101000.11010100.11100010.11001100.
But it is easier for us to remember decimals than it is to remember binary
numbers, so we use decimals to represent the IP addresses when describing
them. However, the binary number is important because that will determine which
class of network the IP address belongs to. An IP address consists of two parts,
one identifying the network and one identifying the node, or host. The Class of the
address determines which part belongs to the network address and which part
belongs to the node address. All nodes on a given network share the same
network prefix but must have a unique host number.
Class A Network: Binary address start with 0, therefore the decimal number can
be anywhere from 1 to 126. The first 8 bits (the first octet) identify the network and
the remaining 24 bits indicate the host within the network. An example of a Class
A IP address is 102.168.212.226, where "102" identifies the network and
"168.212.226" identifies the host on that network.
Class B Network: Binary addresses start with 10, therefore the decimal number
can be anywhere from 128 to 191 (the number 127 is reserved for loopback and is
used for internal testing on the local machine). The first 16 bits (the first two
octets) identify the network and the remaining 16 bits indicate the host within the
network. An example of a Class B IP address is 168.212.226.204 where
"168.212" identifies the network and "226.204" identifies the host on that network.
Class C Network: Binary addresses start with 110, therefore the decimal number
can be anywhere from 192 to 223. The first 24 bits (the first three octets) identify
the network and the remaining 8 bits indicate the host within the network. An
example of a Class C IP address is 200.168.212.226 where "200.168.212"
identifies the network and "226" identifies the host on that network.
Class D Network: Binary addresses start with 1110, therefore the decimal number
can be anywhere from 224 to 239. Class D networks are used to support
multicasting.
Class E Network: Binary addresses start with 1111, therefore the decimal number
can be anywhere from 240 to 255. Class E networks are used for
experimentation. They have never been documented or utilized in a standard
way.
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Network Information
Commonly known as: Network wire, Ethernet cable, Cat5 cable, the information
following will explain the connectivity for Liebert Environmental units.
Fundamentally, this section will explain the terms of networking so that you can
apply the information to building your own network. The parts and components
are discussed in generic fashion since equipment manufacturers and price range
of the equipment varies and changes on an almost daily basis. However, the
terms themselves stay relatively consistent, so purchasing or discussing your
needs with networking personnel remains the same.
What is networking?…
In it’s simplest form, a network can be created when 2 units are connected through
communication wires. This simple connection requires a special “crossover” cable
which “crosses” the receive and transmit lines (hence, the name of the cable) and
is readily available at your local computer store. However, for most applications,
the simpler and more generic installation requires network cables and a hub or
switch as explained below.
NETWORK CABLING
Twisted Pair Ethernet (10baseT), sometime also called "UTP" from "Unshielded
Twisted Pair", is based on using a cable and connectors similar to phone-wiring.
The cable is connected via an RJ-45 connectors to the network connection
installed in the Air Unit. The wire itself is generally called Category 5 wire.
Category 5 cable
RJ-45
UTP connector
HUBS AND SWITCHES
The opposite end of the network cable connects
each Air Unit to the "hub" or “switch”: these devices
amplify and distribute the signal to other connected
units. Switches and hubs range in prices from $20
to thousands depending on the application. Most
businesses have standardized on their networking equipment, so there is one
probably already installed. Hubs are like mechanical devices where the
connections themselves are automatically switched, allowing you to “bus” 2 or
more devices easily. In a hub, only 1 device can communicate at a time.
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Switches perform the same mechanical function, but they also include software
inside that allows communication to operate at faster speeds and allow for multiple
unit communication. Switches are the latest technology, but you are safe to use
either device.
g
d
i
i
t
a l
Twisted pair - 10baseT - UTP Cable
Hubs are available in different
configuration, with 4, 8, 12, 15 or 24 RJ-
45 connections. You can plug in the
RJ45-connector into a hub while the
network is running on the other connected
systems, allowing you to move / add
192.168.168.3
192.168.168.2
192.168.168.1
systems without having to shutdown the network.
As network grow, you may need a second hub:
UNIT IDENTIFICATION OR ADDRESSING
The units are separated and identified through their TCP/IP address. TCP/IP
refers to the protocol or language being used to communicate between the
Environmental Units. The addresses are arranged in 32-bit numbers. To make it
easier to memorize such IP-addresses, they are usually expressed as 4 8-bit
numbers (example: 192.168.10.1), where each of the 4 numbers is within the
range of '0' to '255' (there are restriction on using '0' and '255', avoid using them.)
When setting up a small private network, you are free to use ANY IP-
address, however, when you are connected to a company network, you need
to ask the Network-administrator to assign you an IP-address. And if you are
connected to the Internet, your ISP (Internet Service Provider) will assign an
IP-address to you.
Even if a network is NOT connected to the Internet, it has become custom to use
on private networks a range of IP-addresses, which are reserved for private
networks (that makes it later possible to connect your private network to the
Internet without having to re-configure everything). The reserved IP-address is:
192.168.x.y, where x=same number on all systems and y=different/unique number
on all systems.
See the example above under HUBS AND SWITCHES for an example of this
configuration.
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How To Use The Schematics
As you look at the outside edge of the electrical schematic (drawing), you will see
the numbers 8 through 1 (reading left to right) across the top and bottom and the
letters D through A (reading from top to bottom) along both the left and right edges
of the schematic. These numbers and letters are called locators, just like on a
map. By intersecting the number and letter into the drawing, you can locate the
section of the schematic you need to reference.
The next area of interest is the line numbers along both sides of the schematic.
By using these line numbers and a straight edge, you can pinpoint a particular
item in the located section. Also, useful is the Nomenclature section along the
right side of the schematic. The nomenclature sections refers identifies the device
by abbreviation and name and indicates on which line the device is found.
If you look deep into the schematic, you can see that the transformer section is
laid out in a ladder progression making it easy to follow-out each circuit. You may
wish to highlight each circuit with a marker making it easy to follow.
The number indicators in the area to the right of the ladder circuit section are also
important. These are the contact locators for each relay or contactor shown on the
drawing. The number represents the line location of the contact(s) for the adjacent
shown relay or contactor. There are two types of line number indicators. One is
highlighted with a bar across the top of the number, this indicates a normally
closed contact. The other number shown without the bar indicates a normally
open contact. Remember that the drawing is shown in the non-powered (de-
energized) state.
These drawings are the latest revisions at publication of this manual and are what
Liebert calls Universal drawings. Liebert has included numerous options on each
one of these drawing to help in troubleshooting the system. These drawings may
or may not be on your particular unit.
It is important to become familiar with legend, nomenclature and notes on each
drawing.
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Electrical Schematics
Liebert DS iCOM Global Control 8 - 12 Ton
182769
182770
182771
182772
Liebert DS iCOM Global Control 15 – 30 Ton, 380 – 575V
Liebert DS iCOM Global Control 15 – 30 Ton, 200 – 230V
Liebert DS iCOM Global Control 8 - 12 Ton, SCR Reheat
182952 Connection Drawing Liebert DS
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Notes
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