S9360A, S9361A, S9370A, S9371A
Integrated Boiler Controllers
INSTALLATION INSTRUCTIONS
SPECIFICATIONS
IMPORTANT:
The specifications given in this publication do
not include normal manufacturing tolerances.
Therefore, an individual unit may not match the
listed specifications exactly. Also, this product is
tested and calibrated under closely controlled
conditions, and some minor differences in
performance can be expected if those
conditions are changed.
Model Numbers
APPLICATION
S—Switching Control
9 3—Integrated Hydronic Control Platform
These integrated boiler control modules provide ignition
sequence, flame monitoring and safety shutoff for either
intermittent pilot spark ignition or direct hot surface
ignition heating systems. They also provide limit rated
water temperature control and display interface capability
for either “on-board” or remote user interface
applications.
6—Spark Ignition
7—Hot Surface Ignition
0—Remote Display Required
1—Integrated On-Board Display
A—Boiler Control
B—Water Heater Control
C—Pool Heater Control
1—No Circulator
•
•
S9360A—Spark Ignition, Intermittent Pilot, Remote
Display.
S9361A—Spark Ignition, Intermittent Pilot, “On board”
Display.
2—On/Off Circulator
•
•
•
S9370A—Hot Surface Ignition, Remote Display.
S9371A—Hot Surface Ignition, “On board” Display.
Enabled with EnviraCOM™ communication capability
to support remote monitoring and diagnostics.
Limit-rated Temperature Sensing Probe.
One or Two Sensor Models.
S
9
3
6
0
A
1
000
•
•
Dimensions:
See Fig. 1.
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S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS
Table 1. Recommended Ignition Cables.
High Humidity or Dripping Water
Temperature Rating
°C °F
Over time, dripping water or high ambient humidity can
create unwanted electrical paths on the module circuit
board, causing the module to fail. Never install an
appliance where water can drip on the controls.
Voltage
Cable Type Rating (rms)
UL Style
3217
10,000
10,000
150
302
In addition, high ambient humidity can cause the control
to corrode and finally fail.
UL Style
3257
250
484
Where the appliance may be installed in a humid
atmosphere, make sure air circulation around the module
and gas control is adequate to prevent condensation. It is
also important to regularly check out the system. A NEMA
4 enclosure may be needed.
Transformer Requirement:
Add current ratings of module, pilot valve, main valve,
vent damper and any other components of the control
system to determine transformer size requirement.
Approvals:
Varies with control model.
ANSI Z21.20 Automatic Gas Ignition Systems and
Components.
ANSI Z21.23 Gas Appliance Thermostats.
EN298: Automatic Gas Burner Control Systems
ANSI Z21.87: Automatic Gas Shutoff Devices for Hot
Water Supply Systems.
Corrosive Chemicals
Corrosive chemicals can also attack the module and gas
control and eventually cause a failure. Where chemicals
may be used routinely for cleaning, make sure the
cleaning solution cannot reach the controls. Where
chemicals are likely to be suspended in the air, as in some
industrial and agricultural applications, protect the module
from exposure with a NEMA 4 enclosure.
UL353 Limit Controls.
PLANNING THE INSTALLATION
Dust or Grease Accumulation
Heavy accumulation of dust or grease may cause the
controls to malfunction. Where dust or grease may be a
problem, provide covers for the module and gas control
that limit environmental contamination. A NEMA 4
enclosure is recommended for the module.
Automatic Ignition Control domestic and commercial
boiler systems are used on a wide variety of equipment.
Some of these applications may make heavy demands on
the controls, either because of frequent cycling, or
because of moisture, corrosive chemicals, dust or
excessive heat in the environment. In these situations,
special steps may be required to prevent nuisance
shutdowns and premature control failures. These
applications require Honeywell Engineering review;
contact your Honeywell Sales Representative for
assistance.
Heat
The controls can be damaged by excessively high
temperatures. Make sure the maximum ambient
temperature at the control locations will not exceed the
rating of the control. If the appliance normally operates at
very high temperatures, insulation, shielding, and air
circulation may be necessary to protect the controls.
Proper insulation or shielding should b provided by the
appliance manufacturer; make sure adequate air
circulation is maintained when the appliance is installed.
Frequent Cycling
These controls are designed for use on domestic and
commercial boiler systems that typically cycle less than
10,000 cycles per year. In an application with significantly
greater cycling rates, we recommend monthly checkout
because the controls may wear out more quickly.
INSTALLATION AND CHECKOUT
Water or Steam Cleaning
When Installing This Product…
Once a module or gas control has been wet, it may
operate unreliably and must be replaced. If the appliance
is likely to be cleaned with water or steam, the controls
and associated wiring should be covered so that water or
steam cannot reach them. The controls should be high
enough above the bottom of the cabinet so they will not
be subjected to flooding or splashing during normal
cleaning procedures. If necessary, shield the controls to
protect them from splashing water. A NEMA 4 enclosure
is recommended.
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a
hazardous condition.
2. Check the ratings given in the instructions and on
the product to make sure they are suitable for your
application.
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
3
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S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS
WARNING
WARNING
Fire or Explosion Hazard.
Fire or Explosion Hazard.
Can cause severe injury, death or property
damage.
1. The module can malfunction if it gets wet,
leading to accumulation of explosive gas.
• Never install where water can flood, drip or
condense on module.
Can cause severe injury, death or property
damage.
Do not attempt to take the module apart or to
clean it. Improper reassembly and cleaning may
cause unreliable operation, leading to an
accumulation of explosive gas.
• Never try to use a module that has been
wet—replace it.
2. Liquefied petroleum (LP) gas is heavier than air
and will not vent upward naturally.
• Do not light pilot or operate electric switches,
lights, or appliances until you are sure the
appliance area is free of gas.
Maintenance frequency must be determined individually
for each application. Some considerations are:
Cycling frequency. Appliances that may cycle more than
10,000 times annually should be checked monthly.
3. If a new gas control is to be installed, turn off
gas supply before starting installation. Conduct
Gas Leak Test according to gas control
manufacturer instructions after the gas control
is installed.
4. If module must be mounted near moisture or
water, provide suitable waterproof enclosure.
Intermittent use. Appliances that are used seasonally
should be checked before shutdown and again before the
next use.
Consequence of unexpected shutdown. Where the cost of
an unexpected shutdown would be high, the system
should be checked more often.
Dusty, wet, or corrosive environment. Since these
environments can cause the controls to deteriorate more
rapidly, the system should be checked more often.
WARNING
Electrical Shock Hazard.
Can cause severe injury, death or property
damage.
Disconnect power supply before beginning wiring
to prevent electrical shock or equipment damage.
Any control should be replaced if it does not perform
properly on checkout or troubleshooting. In addition,
replace any module if it is wet or looks like it ever has
been wet. Protective enclosures as outlined under
Planning the Installation are recommended regardless of
checkout frequency.
Perform Preinstallation Safety Inspection
The preinstallation checks described in ANSI Standard
Z21.71 must be done before a replacement module is
installed. If a condition which could result in unsafe
operation is detected, the appliance should be shut off
and the owner advised of the unsafe condition. Any
potentially unsafe condition must be corrected before
proceeding with the installation.
Mount Module
Select a location close enough to the burner to allow a
short (3 ft. [0.9 m] maximum), direct cable route to the
igniter. Ambient temperature at the module must be within
the range listed under Specifications. The module must
be protected from water, moisture, corrosive chemicals
and excessive dust and grease. Refer to Fig. 2 and 3 for
recommended slot/hole pattern in appliance.
Maintenance Requirements in Severe
Environments
Regular preventive maintenance is important in any
application, but especially so in commercial, agricultural,
and industrial applications, because:
99.5
1. In such applications, particularly commercial, the
equipment can operate 100,000 to 200,000 cycles
per year. Such heavy cycling can wear out the gas
control in one to two years. A normal boiler applica-
tion, for which the controls were intended, typically
operate fewer than 10,000 cycles per year.
4
16
2. Exposure to water, dirt, chemicals, and heat can
damage the module or the gas control and shut
down the control system. A NEMA 4 enclosure can
reduce exposure to environmental contaminants.
The maintenance program should include regular
checkout of the system as outlined under Checkout.
100
4
16
55
M24198
Fig. 2. Recommended slot/hole pattern in appliance
(in mm).
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S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS
WATER
HEATER
CONTROL
BOX
M24229
Fig. 3. Align module with slots in control box.
IMPORTANT
Wire the System
1. All wiring must comply with applicable local
electrical codes and ordinances.
2. When installing a hot surface igniter, the
leadwires should be kept as short as possible
and should not be allowed to rest against
WARNING
Can cause severe injury, death or property
damage.
Disconnect the power supply before making wiring
connections to prevent electrical shock or
equipment damage.
Electrical Shock Hazard.
grounded metal surfaces.
3. A common ground is required for the S93XX and
the main burner. The 24V “secondary” plug inter-
nally grounds one side of the transformer. Any
auxiliary controls or limits must not be in the
grounded leg. In addition, the appliance should
be earth-grounded.
4. Make sure the transformer has adequate VA.
The ignition module requires at least 0.2A at 24
Vac. Add the current draws of all other devices in
the control circuit, including the gas control, and
multiply by 24 to determine the total VA
requirements of these components. Add this
total to 5.0 VA (for the module). The result is the
minimum transformer VA rating. Use a Class II
transformer if replacement is required.
Check the wiring diagram furnished by the appliance
manufacturer for circuits differing from the wiring hookup
shown in Fig. 4 and 5. Carefully follow any special
instructions affecting the general procedures outlined
below.
5. Check that L1 (hot) and L2 (neutral) are wired to
the proper terminals.
Connect Ignition Cable (S936XAXXXX)
Use Honeywell ignition cable or construct an ignition
cable that conforms to suitable national standards, such
as Underwriters Laboratories Inc. See Specifications
section. To construct a cable, fit one end (the module end)
with 1/4 in. connector receptacle and the other with a
connector to match the pilot assembly. Protect both ends
with insulated boots.
5
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S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS
NOTE: Cable length must be 36 in. (0.9 m) or less. The
cable must not be in continuous contact with a
metal surface or spark voltage will be greatly
reduced. Use ceramic or plastic standoff
insulators as required.
the ground wire; asbestos insulation is not acceptable. If
necessary, use a shield to protect the wire from radiant
heat generated by the burner.
The burner serves as the common grounding area. If
there is not a good metal-to-metal contact between the
burner and ground, run a lead from the burner to ground.
1. Connect one end of the cable to the male
quick-connect SPARK terminal on the module.
2. Connect the other end of the cable to the igniter or
igniter-sensor stud on the pilot burner/igniter-
sensor.
NOTE: “Earth” ground is not required.
S937XA Hot Surface Ignition Versions
These models provide operating control of a direct ignition
system using a hot surface igniter. Additional components
required to complete the system must be ordered
separately. They include:
Connect Vent Damper (Vent Damper Models)
A vent damper can be used with modules provided with a
®
vent damper plug connector. The Molex plug provided
simplifies wiring connections.
•
Dual Valve Combination Gas Control: Any direct
ignition gas control with 2.0A maximum main valve
rating. VR8205, VR845, VR854, VR8450, or VR8540
recommended.
Hot Surface Igniter: Norton Model 201 or 271 or
equivalent.
To connect the vent damper, follow the wiring diagrams
supplied with the vent damper for typical connections.
Connect Remaining Module Connectors
Connect remaining system components to the ignition
module terminals as shown in the appropriate wiring
diagrams, Fig. 4 and 5.
•
NOTE: If igniter other than Norton Model 201 or 271 is
used, the igniter must meet the following
minimum specifications, required over the life of
the igniter:
Connect Igniter (HSI Models)
Prepare wiring harness:
1. Use wire suitable for the temperatures near the HSI
igniter.
2. Use wire suitable for the voltage ratings of the
specific igniter.
3. Attach connector per Table 4, HSI Specific
Connectors.
1.
2.
Igniter must reach 1000°C (1832°F) within 34
seconds with 102 Vac applied.
Igniter must maintain at least 500 megohms
insulation resistance between the igniter
leadwires and the igniter mounting bracket.
Igniter current draw at 132 Vac must not
exceed 5 A.
3.
Sensor: Separate sensor required. Honeywell Q354
recommended.
Connect Gas Control
Use No. 18 AWG solid or stranded wire. Connect to gas
control terminals as shown in wiring diagrams, using
terminals appropriate to the gas control.
Igniter Wiring: Provide wiring harness to suit application.
•
•
Leadwires: No. 18 AWG, stranded copper with 105°C
rated, 1/16 in. AWM insulation.
Terminals: Insulated. See Table 4 for HSI specific
connectors.
Ground Control System
The igniter, flame sensor and module must share a
common ground with the main burner. Use AWM
insulated wire with a minimum rating of 105°C (221°F) for
Transformer: Add current ratings of module, gas control,
vent damper and any other components of the control
system to determine transformer size requirements.
Table 2. Specific Ignition Timings.
Ignition
No. of
Ignition
Trials
Igniter/ Automatic
Activation Prepurge Postpurge
Sensor
Type
Restart
Time
a
b
b
Model
S9360A
Ignition Type Draft Type
Period
N/A
Timing
15
Timing
Intermittent
Pilot - Spark
Induced
3
3
3
Separate 1 hour
Separate 1 hour
Separate 1 hour
5
5
S9360A
S9370A
Intermittent
Pilot - Spark
Atmospheric
Induced
N/A
2.5
1
5
Direct Hot
Surface
15
a
b
Ignition Activation Period is the time that the hot surface igniter remains powered after the gas valve opens.
Purge Timing specified in seconds.
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S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS
FLAME
SENSE
SPARK
IGNITER
CIRCULATOR
L1
L2
GND
GND
1
INDUCER
24 VAC
TRANSFORMER
1
DAMPER
ENVIRACOM
DIAGNOSTIC
ENVIRACOM
DISPLAY
MV
GAS
CONTROL
PRESSURE SWITCH
LIMIT SWITCH
PV
PV/
MV
SENSOR 1
SENSOR 2
1
OPTIONAL DEPENDING ON CONFIGURATION
M24216
Fig. 4. Spark Ignition Wiring (S936X).
7
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S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS
CIRCULATOR
INDUCER
GND
HOT SURFACE
IGNITER
FLAME
SENSE
24 VAC
TRANSFORMER
L2
GND
L1
ENVIRACOM
DIAGNOSTIC
ENVIRACOM
DISPLAY
MV
GAS
CONTROL
PRESSURE SWITCH
LIMIT SWITCH
MV
SENSOR 1
SENSOR 2
M24218
Fig. 5. Hot Surface Ignition Wiring (S937X).
Common Connectors
Table 3. Connectors Common to Both Spark-to-Pilot and Hot Surface Ignition Options.
Connection/Color
Pin
Mating Plug
Description
Flame Sense
1 of 1
3/16 in. female quick- Connection to Flame
connect
Rod
®
Sensor 1/White
1 of 3
2 of 3
3 of 3
1 of 2
2 of 2
NTC 1-1
Molex 43061-0003
Sensor Common
NTC 1-2
a
®
NTC Temperature
Sensor
Sensor 2 /White
Molex 43061-0002
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S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS
Table 3. Connectors Common to Both Spark-to-Pilot and Hot Surface Ignition Options. (Continued)
Connection/Color
Pin
Mating Plug
Description
ECOM Data “1”
ECOM R “2”
EnviraCOM/Black
1 of 3
2 of 3
3 of 3
1 of 3
2 of 3
3 of 3
Stripped Bare Wire
ECOM C “3”
EnviraCOM Diag/
White
“Pen” Diagnostic Tool ECOM Data “1”
with 0.1 in. spacing
ECOM R “2”
ECOM C “3”
®
Transformer Primary/ 1 of 3
L1
Molex 50-81-1030
White
2 of 3
Earth Ground
Neutral
3 of 3
®
Transformer
Secondary/White
1 of 2
2 of 2
1 of 9
24 Vac Input
Earth Ground
Molex 50-81-1020
®
a
a
“Control”/White
Molex 50-81-1090
Pressure Switch
a
2 of 9
3 of 9
Pilot Valve
Pressure Switch
AC N.C. Switch
Main Valve
4 of 9
5 of 9
6 of 9
7 of 9
8 of 9
AC N.C. Switch
N.C.
MV/PV (Valve
Common)
9 of 9
N.C.
a
Indicates optional connection based on configuration.
HSI Model Specific Connectors
In addition to the common connectors listed above, Table 4 identifies connectors available on the HSI model board
assemblies.
Table 4. HSI Model Specific Connectors.
Connection
Pin
1 of 4
Mating Plug
Description
L1 Relay Out
a
®
On/Off Circulator /White
Molex 50-84-1061
2 of 4
3 of 4
4 of 4
1 of 3
2 of 3
3 of 3
1 of 4
2 of 4
3 of 4
4 of 4
1 of 2
2 of 2
Earth Ground
Neutral
Neutral
®
Line Voltage Input/Red
L1
Molex 50-84-1031
Earth Ground
Neutral
®
Induced Draft Blower (Combustion Air)/Red
L1 Relay Out
Earth Ground
Neutral
Molex 50-84-1041
Neutral
®
HSI/Red
L1 Relay Out
Flame Sense/(N) Relay Out
Molex 50-84-1021
a
Indicates optional connection based on configuration.
9
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S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS
Table 5. Spark Model Specific Connectors.
Connection
Line Voltage Input/White
Pin
1 of 4
Mating Plug
Description
®
L1
Molex 50-81-1040
2 of 4
3 of 4
4 of 4
1 of 6
2 of 6
3 of 6
4 of 6
5 of 6
6 of 6
1 of 6
2 of 6
Earth Ground
Earth Ground
Neutral
a
®
Earth Ground
N/C
Induced Draft Blower (Combustion Air )/White
Molex 39-01-2060
Neutral
N/C
L1 Relay Out
N/C
a
24 Vac
Vent Damper /White
Damper E.S.
Feedback
3 of 6
24V Common if
damper connected
4 of 6
5 of 6
6 of 6
1 of 1
24V Common
Damper Activation
N/C
Spark Rod
1/4 in. female quick-
connect
Connection to Spark
Rod
a
®
1 of 2
2 of 2
L1 Relay Out
Neutral
On/Off Circulator /Red
Molex 50-84-1021
a
Indicates optional connections based on configuration.
Table 6. Pin Configuration.
Wire Harness Housing Pin Configuration
®
Pin/Socket
Molex Number
Line In
pin
socket
02-08-2004
Transformer Primary
02-08-1002
02-08-1002
02-08-2004
03-06-2103
39-00-0039
02-08-1002
08-50-0106
08-50-0106
08-50-0114
Transformer Secondary socket
Circulator
Damper
pin
pin
Inducer
socket
socket
socket
socket
socket
Control
Sensor 1
Sensor 2
E-COM Diagnostic
The overall range of the setpoint is model-dependent but
is within 130°F to 240°F (54°C to 116°C). Select devices
may have different ranges.
Temperature Control
Temperature control setpoint on the module can be
adjusted as described in the following sections. Some
modules with temperature control also include a three-
digit display on the printed circuit board to facilitate
adjustments and troubleshooting.
Adjusting Settings or Models with “On-
Board” Display
For modules that do not include temperature control on
the module refer to the Honeywell Installation Instructions
for the specific interface module or the appliance
manufacturer’s instructions. A separate automatic gas
shutoff device is not required in a system that uses this
control to meet requirements for CSA International ANSI
Z21.87 and UL 353.
To discourage unauthorized changing of settings, a
procedure to enter the adjustment mode is required. To
enter the adjustment mode, press the UP, DOWN, and I
buttons (see Fig. 1) simultaneously for three seconds.
Press and release the I button until the parameter
requiring adjustment is displayed:
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S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS
“SP_”
“Df_”
“°F_”
Setpoint.
LOCATION AND MOUNTING
Setpoint Differential (select models).
Degrees Fahrenheit
Then press the UP or DOWN button until the parameter
has reached the desired value. After 60 seconds without
any button inputs, the control will automatically return to
the READ mode.
Sensing Bulb(s)
The water heater manufacturer usually provides a tapping
for the sensing bulb at a point where average water
temperature can be measured. Some water heaters use
two (2) sensors, one limit rated near the center or bottom
of the tank, the other non-limit rated near the top. See Fig.
7. Follow the heater manufacturer instructions.
Display
In the RUN mode, status items and parameters are
viewable. For example, to display setpoint, the control will
flash “sp” (setpoint) followed by the temperature (i.e.,
135), followed by °F or °C.
The sensing bulb can be installed in an immersion well.
Wells and fittings must be ordered separately. See 68-
0040.
To read settings, press and release the I key to find the
parameter of interest. For example, press and release I
until setpoint (sp) is displayed, followed by a three-digit
number, i.e., 220, followed by °F or °C. Pressing the I
button again will display the (S1T) Sensor 1 Temperature
followed by a three-digit number and the corresponding
degree designator. See Display Readout, Fig. 6.
When an immersion well is used, the sensor should fit
snugly and should touch the bottom of the well for best
temperature response. Use heat-conductive compound
(Honeywell part no. 107408) to fill the space between the
bulb and the well to improve heat transfer characteristics
(optional). Make sure the sensor is held firmly in the well.
Remote Display
Display
For units that use a remote display, refer to I&I sheet for
SD7000A.
Text
Description
Current State
Shows
sta
s1t
s2t
sp
Sensor 1 Temperature
Sensor 2 Temperature*
Setpoint
WIRING
IMPORTANT:
For maximum trouble free operation, run the
sensor leadwires separately from any other cur-
rent-carrying wires.
dff
hr
Setpoint Differential
Heat Request Status
All wiring must comply with local codes and ordinances.
Disconnect power supply before beginning wiring.
Connect according to water heater manufacturer
instructions.
err
fla
F
Error Code
Flame Current
Degrees Fahrenheit
Degrees Celsius
C
INDUCER
MOTOR
INLET
uA
Micro Amps
(OPTIONAL)
LIMIT
M24052
SENSOR
SUPPLY
PUMP
Fig. 6. Display readout definitions.
Boiler Temperature Controller
When the water temperature reaches setpoint, the
controller ends the heating cycle. When the water
temperature drops below the setpoint minus the
differential, the control restarts a heat cycle to re-heat the
tank of water.
INTEGRATED
BOILER
CONTROL
MAIN
BURNER
If the water temperature exceeds the max allowed
temperature, the control enters a manual reset lockout
state. For models that have reset capability, press any on-
board button (when present), cycle power, or use the
remote display to reset.
PILOT
CHECKOUT
M27076
Put the system into operation and observe operation
through at least one complete cycle to make sure that the
controller operates properly. See Troubleshooting section
to assist in determining system operation.
Fig. 7. Typical location of limit function sensor and
control module.
11
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S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS
Mounting Sensor and Thermowell
OPERATION AND CHECKOUT
The remote upper temperature sensor is installed in an
immersion well (Fig. 8) that extends into the supply water
side of the boiler.
Operation
The S9360A, S9361A, S9370A and S9371A continuously
monitor the temperature of the boiler water and enable or
disable the burner based on this temperature data. In
general, when a “Call for Heat” occurs, the ignition portion
of the control module proceeds through the steps
necessary to start the burner and heats the water in the
boiler until the setpoint temperature is achieved. At this
point the burner is de-activated, the ignition module
completes the heating cycle, returns to idle and waits for
the temperature to drop again. The circulator is turned on
throughout the “Call for Heat.”
Immersion Well Fitting
The immersion well must snugly fit the sensing bulb for
good thermal response. Install as follows:
1. Use tapping provided by tank manufacturer, if pos-
sible, or select an area where typical water temper-
ature is best measured.
2. If tank is filled, drain to below point where bulb will
be installed.
3. Screw well into tank.
4. Insert bulb into well, pushing wires until bulb bot-
toms in well.
5. Attach mounting clamp end of well spud.
6. With mounting clamp attached to well spud (make
sure jaws of clamp hook over ridge at end of spud,
as shown at points A in Fig. 8), adjust sensing lead-
wire to fit through mounting clamp groove, as
shown at point B in Fig. 8.
7. Tighten draw nut until mounting clamp is firmly
attached to well spud and wires are held securely in
place.
See Fig. 9 for a graphical representation of a simple
control cycle. Note that the setpoint differential may vary
based on OS number.
High Limit Controller
All models include a 3-wire temperature sensor interface,
“Sensor 1,” which is utilized for High Limit functionality in
addition to the thermostatic control of the water heater
burner. If the temperature sensor ever indicates a
temperature above the maximum limit then the control
enters over temperature mode. In over temperature mode
no heating will occur.
CAUTION
Do not secure draw nut so tightly that
mounting clamp collapses tubing.
200°F (93.3°C)
BOILER
SENSOR WIRES
IMMERSION
WELL
SENSOR
GAS VALVE OFF
GAS VALVE ON
SETPOINT
15°F (8°C)
DIFFERENTIAL
HEAT-CONDUCTIVE COMPOUND
(OPTIONAL)
M23086A
Fig. 8. Immersion well fitting for sensor.
70°F (21°C)
M27000
Wiring
Disconnect power supply before installation to prevent
electrical shock or equipment damage. All wiring must
comply with local codes and ordinances regarding wire
size, type of insulation, enclosure, etc.
Fig. 9. Basic control algorithm example.
69-2076—01
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S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS
IGNITION
SEQUENCE
CIRCULATOR
CONTROL
IDLE
IDLE
ALL OUTPUTS OFF
ALL OUTPUTS OFF
WATER TEMPERATURE LOW AND THERMOSTAT ACTIVE
THERMOSTAT CALL FOR HEAT ACTIVE
CHECK LEAKAGE/
WATER TEMP.
CIRCULATOR ON
SET FLAME BIAS
BIAS DONE
HIGH OR CALL
FOR HEAT LOST
THERMOSTAT CALL FOR HEAT LOST
TIME OUT OR
MANUAL RESET
WAIT LIMIT
SWITCH CLOSE
CIRCULATOR OFF
LIMIT SWITCH
OPEN
LIMIT SWITCH CLOSE
CHECK DAMPER/
PRESSURE SWITCH
OPEN
SWITCH OPEN
DRIVE DAMPER/
INDUCER WAIT FOR
SWITCH CLOSE
SWITCH CLOSE
SWITCH OPEN
FLAME DEB ON
FLAME DEB OFF
TIME OUT
CHECK FLAME
PRE-TRIAL
SOFT LOCKOUT
PREPURGE
TIME OUT
TIME OUT
A
SPARK
TURN PILOT VALVE ON
TIME OUT
A
TIME OUT
RETRY DELAY
FLAME SENSED
PROVE FLAME
STOP SPARKING
B
FLAME PROVED
DAMPER/
PRESSURE
SWITCH OPEN
TIME OUT
FLAME STABILIZATION
TURN MAIN VALVE ON
A
RECYCLE DELAY
TIME OUT
RUN
TIME OUT
FLAME LOST
WATER TEMPERATURE HIGH OR THERMOSTAT CALL FOR HEAT LOST
FLAME DEB ON
FLAME DEB OFF
B
CHECK FLAME
POST-TRIAL
POSTPURGE
M27073
Fig. 10. Operating Sequence.
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S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS
•
Disconnect the ignition cable at the SPARK terminal on
the module.
TROUBLESHOOTING
IMPORTANT
1. The following service procedures are provided
as a general guide. Follow appliance manufac-
turer’s service instructions if available.
2. On lockout and retry models, meter readings
between gas control and ignition module must
be taken within the trial for ignition period. Once
the ignition module shuts off, lockout models
must be reset through the key buttons and dis-
play. On retry models, wait for retry or reset at
the thermostat.
3. If any component does not function properly,
make sure it is correctly installed and wired
before replacing it.
4. The ignition module cannot be repaired. If it mal-
functions, it must be replaced.
WARNING
The ignition circuit generates over 10,000 volts
and electrical shock can result.
Energize the module and listen for the audible sparking
noise. When operating normally, there should be a
buzzing noise that turns on and off twice per second for a
duration of 1–7 seconds, depending on the model.
STEP 4: Check pilot and main burner lightoff.
•
•
Set the system to call for heat by turning the
thermostat above room temperature.
Watch the pilot burner during the ignition sequence.
See if:
5. Only trained, experienced service technicians
should service ignition systems.
—
—
Ignition spark continues after the pilot is lit.
The pilot lights and the spark stops, but main
burner does not light.
Perform the checkout as the first step in troubleshooting.
Then check the appropriate troubleshooting guide and the
schematic diagram to pinpoint the cause of the problem. If
troubleshooting indicates an ignition problem, see Ignition
System Checks below to isolate and correct the problem.
•
If so, ensure adequate flame current as follows.
—
—
—
Turn off furnace at circuit breaker or fuse box.
Clean the flame rod with emery cloth.
Make sure electrical connections are clean and
tight. Replace damaged wire with moisture-resis-
tant No. 18 wire rated for continuous duty up to
105° C [221° F].
Following troubleshooting, perform the checkout
procedure again to be sure system is operating normally.
—
Check for cracked ceramic insulator, which can
cause short to ground, and replace igniter-sensor
if necessary.
Intermittent Pilot
—
—
At the gas valve, disconnect main valve wire from
the MV terminal.
Turn on power and set thermostat to call for heat.
The pilot should light but the main burner will
remain off because the main valve actuator is dis-
connected.
Check the pilot flame. Make sure it is blue, steady
and envelops 3/8 to 1/2 in. [10 to 13 mm] of the
flame rod. See Fig. 11 for possible flame problems
and their causes.
If necessary, adjust pilot flame by turning the pilot
adjustment screw on the gas control clockwise to
decrease or counterclockwise to increase pilot
flame. Following adjustment, always replace pilot
adjustment cover screw and tighten firmly to
assure proper gas control operation.
Set temperature below room setpoint to end call
for heat.
Ignition System Checks
STEP 1: Check ignition cable.
Make sure:
•
Ignition cable does not run in contact with any metal
surfaces.
—
—
•
•
Ignition cable is no more than 36 in. [0.9 m] long.
Connections to the ignition module and to the igniter or
igniter-sensor are clean and tight.
•
Ignition cable provides good electrical continuity.
STEP 2: Check ignition system grounding. Nuisance
shutdowns are often caused by a poor or erratic ground.
•
A common ground, usually supplied by the pilot burner
bracket, is required for the module and the pilot burner/
igniter sensor.
—
—
Check for good metal-to-metal contact between
the pilot burner bracket and the main burner.
Check the ground lead from the GND(BURNER)
terminal on the module to the pilot burner. Make
sure connections are clean and tight. If the wire is
damaged or deteriorated, replace it with No. 14-18
gauge, moisture-resistant, thermoplastic insu-
lated wire with 105° C [221° F] minimum rating.
—Check the ceramic flame rod insulator for
cracks or evidence of exposure to extreme
heat, which can permit leakage to ground.
Replace pilot burner/igniter-sensor and pro-
vide shield if necessary.
•
Recheck ignition sequence as follows.
—
—
—
—
Reconnect main valve wire.
—
Adjust thermostat above room temperature.
Watch ignition sequence at burner.
If spark still doesn’t stop after pilot lights, replace
module.
If main burner doesn’t light or if main burner lights
but system locks out, check module, ground wire
and gas control as described in appropriate trou-
bleshooting chart.
—
Troubleshooting Error Codes
The integrated boiler control uses advanced diagnostic
capability to assist in troubleshooting error conditions.
The following table shows the codes that could arise on
the remote or integrated display during a fault.
Suggestions are provided in Table 7 for servicing these
potential errors.
—If flame rod or bracket are bent out of position,
restore to correct position.
STEP 3: Check spark ignition circuit.
69-2076—01
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S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS
Table 7. Error Codes.
Segment
Display
Definition
Pressure Switch failed to open (contacts stuck closed).
Flame sensed out of normal sequence (before opening gas valve or after
closing gas valve).
Flame sensed during prepurge (before gas valve signaled opened).
Flame sensed during postpurge (before gas valve signaled closed).
Pressure Switch failed to close (contacts stuck open).
Sensor 2 Error. Temperature sensor or interface failure (open or short
connection) or failure of A/D conversion (invalid offset).
Sensor 1 Error. Temperature sensor or interface failure (open or short
connection, increased connection resistance, dual sensor mismatch) or
failure of A/D conversion (invalid offset or gain, too many failures during
A/D conversion).
Atmospheric Damper End Switch failed to close (end switch contacts stuck
open).
Atmospheric Damper End Switch failed to open (end switch contacts stuck
closed).
Flame Rod shorted to burner ground.
AC line frequency error—signal is too noisy or frequency is incorrect.
Line voltage error—voltage out of spec high or low.
Line voltage unstable—possibly too many heavy loads switching on and
off cause erratic supply voltage.
Soft Lockout—maximum number of retries exceeded.
Soft Lockout—maximum number of recycles exceeded.
Soft Lockout—electronics failure. Caused by general electronics failure
such as relay open or shorted contacts, flame sensing circuit error, or A to
D error.
Over temperature error. Sensors measured temperature in excess of ECO
limit.
15
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S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS
CAUSE
APPEARANCE
SMALL BLUE FLAME
CHECK FOR LACK OF GAS FROM:
• CLOGGED ORIFICE FILTER
• CLOGGED PILOT FILTER
• LOW GAS SUPPLY PRESSURE
• PILOT ADJUSTMENT AT MINIMUM
LAZY YELLOW FLAME
WAVING BLUE FLAME
CHECK FOR LACK OF AIR FROM:
• DIRTY ORIFICE
• DIRTY LINT SCREEN, IF USED
• DIRTY PRIMARY AIR OPENING,
IF THERE IS ONE
• PILOT ADJUSTMENT AT MINIMUM
CHECK FOR:
• EXCESSIVE DRAFT AT PILOT
LOCATION
• RECIRCULATING PRODUCTS
OF COMBUSTION
CHECK FOR:
NOISY LIFTING
BLOWING FLAME
• HIGH GAS PRESSURE
HARD SHARP FLAME
THIS FLAME IS CHARACTERISTIC
OF MANUFACTURED GAS
CHECK FOR:
• HIGH GAS PRESSURE
• ORIFICE TOO SMALL
M3272A
Fig. 11. Examples of unsatisfactory pilot flames.
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
customer.honeywell.com
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario M1V 4Z9
® U.S. Registered Trademark
© 2007 Honeywell International Inc.
69-2076—01 M.S. 10-07
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