Refrigeration
System Installation
H-IM-82B
July 2008
Part No. 25001901
Replaces H-IM-82A (6/06)
Refrigeration System
For Outdoor Applications
Table of Contents
1. Owner's Installation Instructions
Performance/Electrical Data
Specifications....................................................................................2
Dimensional Diagrams..................................................................3
Space and Location Requirements
Recommended Unit Placement.................................................4
Rigging
Mounting
Inspection
General Safety Information..........................................................5
Standard Installation Procedure ................................................6
Outdoor Unit Installation Instructions.....................................7
2. Freezers
Service Information
Maintenance
Sequence of Operation
Freezer System Pre-Setpoints
Electric Defrost Sequence of Operation
Programming Electric Defrost Controls ........................... 8-10
3. Coolers
Installation and
Operation Guide
Defrost Controls
Sequence of Operation
Maintenance .................................................................................. 11
4. Service Information
System Troubleshooting Chart................................................ 12
Replacement Parts....................................................................... 13
5. Wiring Information
Electrical Wiring Diagrams..................................................14-19
6. Warranty Information ....................................................... 20
© 2008 Heatcraft Refrigeration Products LLC
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Dimensional Diagrams
Figure A. Medium Cabinet Dimensions without weather hood
Models PTT 021, 031, 044, 047, 063, 072
*
25" x 25" panel opening required for evaporator section of medium cabinet sizes.
* 21.5" with weather hood.
Figure B. Large Cabinet without weather hood
Models PTT 052, 069, 099, 128
*
25" x 381/2" panel opening required for evaporator section of large cabinet sizes.
* 23.5" with weather hood.
Figure C. Medium Cabinet with weather hood
Models PTT 021, 031, 044, 047, 063 and 072
Figure D. Large Cabinet with weather hood
Models PTT 052, 069, 099 and 128
3
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Recommended Unit Placement For PTT Models
Some general rules for the evaporator section placement which
must be followed are:
1.
Ensure that the structural integrity of the box can
withstand the weight of the top mounted equipment.
2.
3.
The air pattern must cover the entire room.
NOTE: Always avoid placement of
units directly above doors
and door openings.
NEVER locate the evaporator section over doors.
4.
5.
Location of aisles, racks, etc. must be known.
Never remove or unlock any panel cam-locks to install
top mounted equipment.
The size and shape of the storage will generally determine the type
and number of units to be used and their location.
Evaporator
Section
Compressor
Section
Top View
One System
Evaporator
Airflow
Evaporator
Section
Evaporator
Section
Compressor
Section
2 x Width
Min.
W
Min.
Compressor
Section
W
Min.
Top View
Systems
Evaporator
Airflow
Evaporator
Airflow
Two
Multiple units must be spaced
properly to provide adequate air
circulation.
W = Unit Width
4
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Rigging
Mounting
Rigging holes are provided on all models. Caution should be
exercised when moving these units. To prevent damage to
the unit housing during rigging, cables or chains used must
The system requires an opening in the ceiling to the
dimensions stated on page 3. Mounting rails are located
at both ends of the chassis. Mounting rails may be used to
be held apart by spacer bars. The mounting platform or base attach unit to ceiling. Through-bolts should be insulated or
should be level and located so as to permit free access of
supply air. The unit weather hood may be removed for the
non-conductive to prevent sweating. The chassis is weather
stripped around the air grille and will seal to the box roof.
rigging process. The condensing unit cover (wrapper) should The trim ring (shipped loose), when provided, should be
be left in place.
installed around the air diffuser when secured with the
hardware provided. Be sure to adhere to your local standard
construction codes.
Access Requirements
Provide adequate space at the compressor end of the unit for
servicing. Provide two (2) feet of space above unit for service.
Trim Pieces (4)
Overlap as Shown
Trim Ring
Installation
Detail
Ceiling of Walk-in.
Evaporator Grill
Self Drilling Screw
Inspection
General Safety Information
1. Each shipment should be carefully checked against the
bill of lading.
1. Installation and maintenance to be performed only by
licensed contractor.
2. The shipping receipt should not be signed until all items
listed on the bill of lading have been accounted for.
2. Ensure that the structural integrity of the box can
withstand the weight of the
unit weights).
(See page 2, Table 3 for
3. Check packaging for signs of damage.
4. Any shortage or damages should be immediately
reported to the delivering carrier.
3. Avoid contact with sharp edges and coil surfaces.
They are a potential injury hazard. Wear gloves during
moving and rigging.
5. Damaged material becomes the delivering carrier’s
responsibility, and should not be returned to the
manufacturer unless prior approval is given to do so.
4. Make sure all power sources are disconnected before
any service work is done on units.
6. When unpacking the system, care should be taken to
prevent damage.
7. Avoid removing the shipping base until the unit has been
moved to the final destination.
8. Complete warranty return card for each unit and mail to
Heatcraft Refrigeration Products.
Table 4. Control Factory Default Settings
PTT
Temperature
Set Points
Defrost
Start Times
Defrost Duration
(Maximum)
Drip
Time
Fan
Delay
Defrost Termination
Set Point
Models
Cooler Models
All cabinet sizes
Every 3 hours of
compressor run time
35˚F
60 min.
40 min.
–
–
38˚F
65˚F
Freezer Models
Med. & Lg. cabinet
-10˚F
4 / day
2 min.
2 min.
5
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The Outdoor
comes standard with the
following additional components:
•
•
•
•
Crankcase Heater
Drain Line Heater
Weather Hood
Fan Cycling
(Pressure on 1 fan models, Pressure and Ambient
on 2 fan models).
Standard Installation Procedure
PTT Models
For outdoor use
Condensate Drain
Outlet Location
1. Provide a 25" X 25" (medium cabinet) or
25" X 38.5" (large cabinet) opening in the
roof of walk-in cooler or as specified by the
panel manufacturer.
8. Remove compressor compartment cover for
access to electrical box.
9. Connect power wiring in accordance with all
applicable building and electrical codes.
2. Apply silicone caulk around the perimeter of roof
opening. Place the curb on roof of cooler. It is
recommended that the curb be fastened to
the roof panels using non-conductive bolts or
insulating the bolt heads. Bolt heads should be
countersunk or low profile to prevent contact with
10. Reinstall condensing unit cover(s).
11. Reinstall the protective weather hood.
(See Figure 4, page 7)
the
system. (See Figure 1, page 7) Check the
units require
top of the curb with a level.
12. Apply power and check for proper operation.
a surface that is within 1° of level or better and no
more than a 5/8" drop per 3 feet
(17mm drop per meter).
Drain Line
3. Install the membrane onto the roof of the box and
over the curb. Fasten to roof per panel
A condensate drain outlet is located on the side of the
compressor compartment. Field piping may be connected
to the outlet provided it is adequately sloped and heated
for freezing weather conditions. There is a drain line "P" trap
located in the PTT unit.
manufacturer's instructions. The membrane
material should be slit over the evaporator grill
opening the flaps allowed to drape into the hole
2" - 4". (See Figure 2, page 7) Care should be taken
during the membrane installation to prevent
bunching or folding which could affect the gasket-
to-curb sealing or trap rainwater adjacent to the
curb.
General Safety information:
Do NOT lift the
by the weather hood.
4. Remove the weather hood from the
system.
This product is not designed to be transported while
installed or operating.
The compressor compartment cover(s) should be
left in place during lifting/rigging.
5. Place
system onto curbing and center over
opening in roof box. (See Figure 3, page 7)
6. It is recommended that the
system be
secured to the curb with wood screws. Seal
the screw heads as necessary to prevent
moisture from entering beneath the membrane.
Additional caulk may be applied around the
perimeter of the evaporator box gasket. The
compressor compartment should not be caulked.
7. Install trim pieces (if used) around the ceiling
opening in cooler.
6
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PTT Models
Example Outdoor Curb Installation
(Curb supplied by others)
This area of
curb may be solid.
Figure 1. Curb placed on roof of walk-in cooler.
Figure 2. Roof membrane placed over curb.
Note: Do not caulk
around the base of com-
pressor compartment.
Figure 3. PTT unit placed on roof of walk-in color.
(see rigging instructions).
Figure 4. Weather hood installed after electrical service
connection.
7
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Medium and Large Cabinet Freezers
3. The temperature/defrost control energizes the
Service Information
compressor contactor, starting the compressor and
condenser fan(s).
All
units are designed for maximum durability, reliability and
simplicity.
comes to you ready for operation, fully charged and
4. Freezer evaporator fans will be energized by the
temperature/defrost control when the coil temperature
reaches 35°F or fan delay time has elapsed.
with all controls preset at the factory. The following information is
provided as an aid in the event that service is required.
Maintenance
The evaporator section of a
system should be checked at
Freezer Defrost Control -
Medium & Large Cabinet
freezer units come factory equipped with an electronic
temperature/defrost control. There are 2 different models of
electronic control used and it is important to determine which
one is present on your unit before altering any factory settings.
Please refer to the picture of the controller display on this page
to determine the model used. Instructions for any necessary
reprogramming are included in this manual on pages 8-10.
least once for proper defrosting because the amount and pattern
of frosting can vary greatly. The frost build-up is dependent on
the temperature of the room, the type of product being stored,
how often new product is brought into the room and percentage
of time the door to the room is open. It may be necessary to
periodically change the number of defrost cycles or adjust the
duration of defrost.
System Standard Maintenance Guidelines
After first year of operation and under normal usage, maintenance
should cover the following items at least once every six months:
1. Check and tighten ALL electrical connections.
2. Check all wiring and insulators.
3. Check contactors for proper operation and for worn
contact points.
Dixell Electronic Controller
The Dixell XR-60CX and the Dixell XR-60C are fully
configurable electronic refrigeration controllers. All
parameter values are reprogrammable and are stored in the
non-volatile memory.
4. Check all fan motors. Tighten motor mount bolts/ nuts
and tighten fan set screws.
5. Clean the condenser coil surface.
6. Check the operation of the control system. Make certain
all safety controls are operating properly.
7. Check that all defrost controls are functioning properly.
8. Clean the evaporator coil surface.
The controllers use two levels of programming that can be
accessed through the keypad. The first level is the user level.
It gives access to six settings; temp. differential, defrost cycle
intervals, defrost termination temperature, draining time,
defrost fan delay, and fan stop temperature.
9. Clean the drain pan and check the drain pan and drain line
for proper drainage.
The second level is the service level. It allows access to all
other parameters. It is recommended that changes in this
level be made only by a qualified technician.
Refrigeration Sequence of Operation
1. Power is provided to the temperature control, compressor
contactor and cooler evaporator fans.
Front Panel Commands
2. The temperature controller closes and energizes the
compressor contactor, starting the compressor,
evaporator and condenser fan(s).
3. When the system reaches the desired box temperature,
the temperature control will de-energize the compressor
contactor. Evaporator fans will continue to operate at
this point.
XR-60CX Controller
XR-60C Controller
4. When the fixture temperature rises above the set point
and minimum off-time has elapsed, the temperature
control will close and re-energize the compressor contactor.
USE OF LEDS
Each LED function is described in the following table.
LED
LED MODE
FUNCTION
Electric Defrost Sequence of Operation
for Freezers
1. During normal operation, at the preset time intervals,
the temperature/defrost control will de-energize the
compressor contactor and evaporator fans and energize
the defrost heaters. These functions are controlled
through relays on the controller.
ON
Compressor enabled
-Programming Phase (flashing with )
- Anti-short cycle delay enabled
Flashing
ON
Defrost enabled
- Programming Phase (flashing with )
- Drip time in progress
Flashing
ON
2. When the coil has defrosted fully and has reached the
preset coil temperature (as sensed by the coil
Fans enabled
temperature sensor) the defrost heater de-energizes
and the fan delay and drip sequences begin.
Fans delay after defrost in progress
(60CX only)
A temperature alarm occurred
Flashing
ON
8
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MAIN FUNCTIONS
NOW YOU ARE IN THE HIDDEN MENU.
3. Select the required parameter.
HOW TO SEE THE SETPOINT
4. Press the “SET”key to display its value (Now only the LED
is blinking).
1. Push and immediately release the SET key:
the display will show the Set point value.
5. Use UP or DOWN to change its value.
6. Press “SET”to store the new value and move to the
following parameter.
HOW TO CHANGE THE SETPOINT
1. Push the SET key for more than 2 seconds to change the
Set point value;
To exit: Press SET + UP or wait 15s without pressing a key.
NOTE: the set value is stored even when the procedure is
exited by waiting the time-out to expire.
2. The value of the set point will be displayed and the LED
starts blinking;
3. To change the Set value push the UP or DOWN arrows
within 10s.
HOW TO SEE THE ALARM DURATION AND MAX (MIN)
TEMPERATURE
4. To memorise the new set point value push the SET key
again or wait 10s.
If the alarm LED is on, an alarm has taken place.
To see the kind of alarm, the max (min) reached temperature
and alarm duration do as follows:v
HOW TO START A MANUAL DEFROST
1. Push the Up or Down key.
Push the DEF key for more than 2 seconds
2. On the display the following message is shown::
“HAL”for high temperature alarm (“LAL”for the
minimum allarm), followed by the Maximum
(minimum) temperature.
and a manual defrost will start.
HOW TO CHANGE A PARAMETER VALUE
To change the parameter’s value operate as follows:
1. Use “UP”or “DOWN”to change its value.
2. Press “SET”to store the new value and move to the
following parameter.
To exit: Press SET + UP or wait 15s without pressing a key.
NOTE: the set value is stored even when the procedure is
exited by waiting the time-out to expire.
Then the “tiM”(tiMe) message is displayed, followed by
the “Duration”in h.mm.
3. Then the instrument displays the temperature once
again.
NOTE1: if an alarm is still occurring the “tim”shows the
partial duration.
NOTE2: the alarm is recorded when the temperature come
THE HIDDEN MENU
The hidden menu Includes all the parameters of the instrument. back to normal values
HOW TO ENTER THE HIDDEN MENU
HOW TO RESET A RECORDED ALARM OR ONE THAT IS
STILL OCCURRING
1. Enter the Programming mode by
pressing the Set + DOWN key for 3s
(LED 1 and start blinking).
2. When a parameter is displayed keep
pressed the Set + DOWN for more than 7s.
The Pr2 label will be displayed immediately
followed from the HY parameter.
1. Hold the SET key pressed for more than 3s, while the
recorded alarm is displayed. (the rSt message will be
displayed)
2. To confirm the operation, the “rSt”message starts
blinking and the normal temperature will be displayed
DEFAULT PARAMETER SETTINGS
DEFAULT SETTINGS
Menu/User
Level
Possible
Settings
Label Characteristic
Description
Low
Medium
Temp.
High
Temp.
Temp.
REGULATION
SEt Set Point
LS ~ US
1~ 45
-10
3
34
3
38
3
(0,1 ÷ 25,5°C / 1÷255 °F) Intervention
differential for set point. Compressor
Cut IN is Set Point + differential (Hy).
Compressor Cut OUT is when the
temperature reaches the set point
Hy
Differential
Pr1
(- 50°C÷SET/-58°F÷SET): Sets the minimum
value for the set point..
(SET÷110°C/ SET÷230°F). Set the maximum
value for set point.
LS Minimum set point
US Maximum set point
Pr2
Pr2
Pr2
-67 ~ SET
SET ~ 302F
-21~21
-23
37
0
25
40
0
33
45
0
Thermostat probe (-12.0÷12.0°C; -120÷120°F) allows to adjust
Ot
OdS
AC
calibration
possible offset of the thermostat probe
(0÷255min) This function is enabled at
Outputs activation the initial start up of the instrument and
0 ~ 255
minutes
Pr2
Pr2
Pr2
0
4
6
0
4
6
0
4
6
delay at start up
inhibits any output activation for the period
of time set in the parameter
(0÷50 min) minimum interval between the
compressor stop and the following restart
(0÷255 min) time during which the
compressor is OFF in case of faulty
thermostat probe. With COF=0
compressor is always active
Anti-short cycle
delay
0 ~ 50
minutes
Compressor OFF
COF time with faulty
probe
0 ~ 255
minutes
9
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DISPLAY
°C=Celsius; °F=Fahrenheit. WARNING: When
the measurement unit is changed the SET
point and the values of the parameters Hy,
LS, US, Ot, ALU and ALL have to be checked
and modified if necessary
°C = Celsius
Temperature
measurement unit
CF
Pr2
Pr2
°F
°F
°F
°F
=Fahrenheit
DEFROST
EL = electric
defrost / in
= hot gas
defrost
tdF Defrost type
EL = electrical heater; in = hot gas
EL
EL
EL
(-50÷50 °C/ -58÷122°F) (Enabled only when
Defrost termination EdF=Pb) sets the temperature measured by
dtE
IdF
Pr1
Pr1
-58~122
65
6
65
6
38
6
temperature
the evaporator probe, which causes the end
of defrost
Interval between
defrost cycles
(0÷120h) Determines the time interval
between the beginning of two defrost cycles
0 ~ 120
hours
(0÷255min) When P2P = n, (not evaporator
probe: timed defrost) it sets the defrost
duration, when P2P = y (defrost end based
on temperature) it sets the maximum
length for defrost
(0÷120 min) time interval between reaching
defrost termination temperature and the
restoring of the control’s normal operation.
This time allows the evaporator to eliminate
water drops that might have formed due
to defrost
(Maximum) length
for defrost
0 ~ 255
MdF
Pr2
Pr1
40
2
40
2
60
0
minutes
0 ~ 255
minutes
Fdt Drip time
FANS (XR60CX ONLY)
Fans delay after
(0÷255min) Interval between end of defrost
and evaporator fans start
0 ~ 255
Not
Fnd
Pr1
Pr2
2
2
defrost
minutes
Applicable
(0÷59°C; Fct=0 function disabled). If the
difference of temperature between the
evaporator and the room probes is more
than the value of the Fct parameter, the
fans are switched on
Temperature
differential
Not
Applicable
Fct
0~90
10
10
avoiding short
cycles of fans
(-50÷50°C/122°F) setting of temperature,
detected by evaporator probe, above
which fans are always OFF
Fans stop
FSt
Not
Pr1
Pr2
-58~122
35
35
temperature
Applicable
ALARMS
(Ab; rE) Ab= absolute temperature: alarm
temperature is given by the ALL or ALU
Temperature alarms values. rE = temperature alarms are
rE = relative
to set point
Ab =
ALC
Ab
Ab
Ab
configuration
referred to the set point. Temperature alarm
is enabled when the temperature exceeds
the “SET+ALU”or “SET-ALL”values
absolute
(SET÷110°C; SET÷230°F) when this
temperature is reached the alarm is
enabled, after the “ALd”delay time
-50.0 ÷ SET°C; -58÷230°F when this
temperature is reached the alarm is
enabled, after the “ALd”delay time
MAXIMUM
ALU
ALL
Pr2
Pr2
ALL~ 302
-58~ ALu
38
50
15
50
30
temperature alarm
Minimum
temperature alarm
-25
ALARM SIGNALS
Message
Cause
Outputs
Message
Cause
Outputs
Compressor output
according to par. “Con”and
“COF”
Minimum
temperature alarm
Room probe
failure
“LA”
Outputs unchanged.
“P1”
“P2”
“HA”
Compressor and fans
restarts
“dA”
“EA”
Door open
Evaporator probe
failure
Defrost end is timed
Outputs unchanged.
External alarm
Output unchanged.
Maximum
temperature alarm
Reprinted with permission from Dixell.
10
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All Cooler Models
Cooler Defrost Control
Maintenance
Cooler units utilize an electronic temperature control.
The temperature may be adjusted by setting the dial. This
control is preset to provide 3 hours of compressor run time
The evaporator section of a
at least once for proper defrosting because the amount
and pattern of frosting can vary greatly. The frost build-up
system should be checked
between defrost cycles. Defrosts are temperature terminated is dependent on the temperature of the room, the type of
and cannot be reprogrammed. The temperature control
is programmed for minimum on cycle of one minute and
minimum off cycle of four minutes.
product being stored, how often new product is brought
into the room and percentage of time the door to the room
is open.
Air Defrost Sequence of Operation
for Coolers
System Standard Maintenance Guidelines
After first year of operation and under normal usage,
maintenance should cover the following items at least once
every six months:
Air defrost units are preprogrammed for 3 hours of
compressor run time between defrosts. These periods are
not reprogrammable. After 3 hours, the temperature control
will turn the compressor off. When the coil temperature
reaches 38°F, the control will terminate the defrost cycle.
1. Check and Tighten ALL electrical connections.
2. Check all wiring and insulators.
3. Check contactors for proper operation and for worn
contact points.
Room Thermostat Settings:
• Approximate dial settings of control
0 = Unit off (not an electrical disconnect)
1 = 52°F (11°C)
4. Check all fan motors. Tighten motor mount bolts/nuts
and tighten fan set screws.
5. Clean the condenser coil surface.
2 = 49°F (9°C)
3 = 45°F (7°C)
4 = 41°F (5°C)
5 = 38°F (3°C)
6. Check the operation of the control system. Make
certain all safety controls are operating properly.
7. Check that all defrost controls are functioning properly.
8. Clean the evaporator coil surface.
6 = 34°F (1°C)
9. Clean the drain pan and check the drain pan and
drain line for proper drainage.
NOTE: If power is interrupted to the unit during the
refrigeration off-cycle (system at temperature setpoint,
compressor off), the thermostat will initiate an extra defrost
period approximately one hour after power is restored.
11
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Table 5.
System Troubleshooting Chart
PROBLEM
Compressor
POSSIBLE CAUSES
1. Main switch open.
POSSIBLE CORRECTIVE STEPS
1. Close switch.
will not run
2. Fuse blown.
2. Check electrical circuits and motor winding for shorts or grounds.
Investigate for possible overloading. Replace fuse after fault is corrected.
3. Overloads are automatically reset. Check unit closely when unit comes
back on line.
3. Thermal overloads tripped.
4. Defective contactor or coil.
4. Repair or replace.
5. System shut down by safety devices.
5. Determine type and cause of shutdown and correct it before resetting
safety switch.
6. No cooling required.
7. Motor electrical trouble.
8. Loose wiring.
6. None. Wait until calls for cooling.
7. Check motor for open windings, short circuit or burn out.
8. Check all wire junctions. Tighten all terminal screws.
Compressor
1. Flooding of refrigerant into crankcase.
2. Worn compressor.
1. Check setting of expansion valves.
2. Replace.
noisy or vibrating
High
1. Non-condensables in system.
2. Fan not running.
1. Remove the non-condensables.
2. Check electrical circuit. Replace if motor fails.
3. Clean.
discharge
pressure
3. Dirty condenser coil.
4. System overcharged with refrigerant.
4. Reclaim refrigerant and recharge proper amount.
Low discharge
pressure
1. Insufficient refrigerant in system.
2. Low suction pressure.
1. Check for leaks. Repair and add charge.
2. See corrective steps for low suction pressure.
High suction
pressure
1. Excessive load.
1. Reduce load or add additional equipment.
2. Check remote bulb. Regulate superheat.
2. Expansion valve overfeeding.
Low
1. Lack of refrigerant.
1. Check for leaks. Repair and add charge (see refrigerant charge chart).
2. Clean.
suction
pressure
2. Evaporator dirty or iced.
3. Expansion valve malfunctioning.
4. Condensing temperature too low.
3. Check and reset for proper superheat.
4. Check ambient temp, 50°F to 100°F.
Compressor
1. Operating beyond design conditions.
2. Dirty condenser coil.
1. Add equipment so that conditions are within allowable limits.
2. Clean coil.
thermal protector
switch open
3. Overcharged system.
3. Reduce charge (see refrigerant charge).
Fan(s) will
1. Main switch open.
1. Close switch.
not operate
2. Blown fuses.
2. Replace fuses. Check for short circuits or overload conditions.
3. Replace motor.
3. Defective motor.
4. Defective defrost control.
5. Unit in defrost cycle.
4. Replace defective component.
5. Wait for completion of cycle.
6. Coil does not get cold enough to reset thermostat
6. Adjust fan delay setting of control. See Defrost Section page 8.
Room
1. Control cut out set too high.
2. Superheat too high.
3. System low on refrigerant.
4. Coil iced-up.
1. Adjust control.
temperature
too high
2. Adjust thermal expansion valve.
3. Add refrigerant. See refrigerant charge chart.
4. Manually defrost coil. Check defrost controls for malfunction.
Ice accumulating
on ceiling around
evaporator and/or
on fan guards'
1. Defrost duration is too long.
1. Adjust defrost termination temp on control. See page 8.
2. Adjust fan delay setting or replace bad sensor.
3. Replace defective control or sensor. See page 10 error codes.
4. Adjust number of defrosts.
2. Fan delay not delaying fans after defrost period.
3. Defective defrost control or sensor.
4. Too many defrosts.
venturi or blades
Coil not clearing
of frost during
defrost cycle.
1. Coil temperature not getting above freezing
point during defrost.
1. Check heater operation.
2. Not enough defrost cycles per day.
3. Defrost cycle too short.
2. Adjust control for more defrost cycles.
3. Adjust defrost control, defrost duration setting.
4. Replace defective component. See page 10 error codes.
4. Defective defrost control or sensor.
Ice accumulating
in drain pan
1. Defective heater.
1. Replace heater.
2. Unit not installed properly (out of level)
3. Drain line plugged.
2. Check and adjust if necessary. See pages 7, 8.
3. Clean drain line.
4. Defective control.
4. Replace defective component.
12
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Replacement Parts by
Commercial Refrigeration Parts
Right source. Right parts. Right now.
InterLink™ is your link to a complete line of dependable and certified commercial refrigeration
parts, accessories and innovative electronic controls for all Heatcraft Refrigeration Products (HRP)
equipment. At InterLink, we provide our wholesalers with a comprehensive selection of product
solutions and innovative technologies for the installed customer base. And every product is built
to ensure the same high performance standards with which all HRP brands are built — backed by
a dedicated team to serve every customer need, delivering at the best lead times in the industry.
Dependable. Versatile. Courteous.
Finally, one simple source for all your replacement needs from a name you can trust.
Coolers
Freezers
Part Description
Fan Blades
Part Number
Evaporator
Condenser
22901901
22900701
1
1
2
1
2
1
3
2
3
2
3
2
3
2
1
1
2
1
2
3
2
3
3
2
3
2
1
2
Fan Motors
208/230V Evaporator
208/230V Condenser
Evap. Fan Motor Bracket
Cond. Fan Motor Bracket
25307801**
25307801
4000104
1
1
1
1
2
1
2
1
2
1
2
1
3
2
3
2
3
2
3
2
3
2
3
2
3
2
3
2
1
1
1
1
2
1
2
1
2
1
2
1
3
2
3
2
3
2
3
2
3
2
3
2
3
2
3
2
23103301
Contactors
25A, 208-240V
20A, 230V
2259996
1
1
1
1
034915200
1
1
1
1
1
1
1
1
1
1
1
1
1
3
1
1
1
3
1
1
1
3
1
1
1
1
1
1
Temperature Control
Freezer Defrost/Temp Control Kit 208/230V*
Temp Control Cooler 208/240V Kit*
Heater Limit Thermostat
Defrost Heaters
89814701
89814601
5708L
1
1
1
1
1
1
230V Defrost Heaters
4312F
4313F
230V Defrost Heaters
3
3
3
3
Outdoor Parts
Fan Pressure Control
28917301
5521R
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Fan Temperature Control
Drain Line Heater
24753401
28917401
50047901
50047801
1
1
1
1
1
1
1
1
1
Drain Line Heater T'stat
Weather Hood Medium
Weather Hood Large
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
*Kits include control, sensors, mounting hardware and instructions.
**PSC motor option (H designation on end of model name): part 25307801 = 25308601, part 25307701 = 25308501,
part 25303201 = 25399201, part 25300101 = 25308501. Contact InterLink Parts at 800-686-7278.
Whenever possible, replacement parts are to be obtained from one of our local authorized wholesalers. Replacement parts which are
covered under the terms of the warranty statement on the back cover of this manual, will be reimbursed for total part cost only. The
original invoice from the parts supplier must accompany all warranty claims for replacement part reimbursement. Heatcraft Refrigeration
Products reserves the right to adjust the compensation amount paid on any parts submitted for warranty reimbursement when a parts
supplier's original invoice is not provided with a claim.
13
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Medium and Large Cabinet Models Wiring. 208-230/1/60 voltages.
Cooler - Air Defrost Systems - Single Phase
Diagram 1. Wiring Diagram for
System, Air Defrost 208-230/1/60 (B): Models PTT047H2B, PTT063H2B,
PTT072H2B, PTT099H2B, and PTT128H2B.
14
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Medium and Large Cabinet Models Wiring. 208-230/1/60 voltages
Indoor and Outdoor Models with Dixell XR-60C Controller
Freezer - Electric Defrost Systems - Single Phase
Diagram 2. Wiring Diagram for
System, Electric Defrost 208-230/1/60 (B): Models PTT021L6B, PTT031L6B,
PTT044L6B, PTT052L6B, and PTT069L6B.
15
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Medium and Large Cabinet Models Wiring. 208-230/1/60 voltages
Indoor and Outdoor Models with Paragon Controller
Diagram 3. Wiring Diagram for
System, Electric Defrost 208-230/1/60 (B): Models PTT021L6B, PTT031L6B,
PTT044L6B, PTT052L6B and PTT069L6B.
16
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Large Cabinet Models Wiring. 208-230/3/60 voltage.
Cooler - Air Defrost Systems - Three Phase
Diagram 4. Wiring Diagram for
System, Air Defrost 208-230/3/60 (C): Models PTT099H2C and PTT128H2C.
17
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Large Cabinet Models Wiring. 208-230/3/60 voltage
Indoor and Outdoor Models with Dixell XR-60C Controller
Freezer - Electric Defrost Systems - Three Phase
Diagram 5. Wiring Diagram for
only.
System, Electric Defrost 208-230/3/60 (C): Models PTT052L6C and PTT069L6C
18
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Large Cabinet Models Wiring. 208-230/3/60 voltage
Indoor and Outdoor Models with Paragon Controller
Freezer - Electric Defrost Systems - Three Phase
Diagram 6. Wiring Diagram for
only.
System, Electric Defrost 208-230/3/60 (C): Models PTT052L6C and PTT069L6C
19
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Warranty Statement
The following conditions should be adhered to when installing this
unit to maintain the manufacturers warranty:
HeatcraftRefrigerationProductsLLCwarrantstoitsdirectpurchasers
thatthe
product,exceptServiceParts,manufacturedbyHeatcraft
RefrigerationProductsLLCshallbeofamerchantablequality, freeof
defects in material or workmanship, under normal use and service
for a period of two (2) years from date of original installation, or
thirty (30) months from date of shipment by Heatcraft Refrigeration
Products LLC, whichever first occurs. Service Parts, for product out
of original warranty, should be so warranted for a period of twelve
(12) months from date of shipment. Any product covered by this
order found to Heatcraft Refrigeration Products LLC's satisfaction to
be defective upon examination at Heatcraft Refrigeration Products
LLC's factory will, at Heatcraft Refrigeration Products LLC's option,
be repaired or replaced and returned to Buyer via lowest common
carrier,orHeatcraftRefrigerationProductsLLCmayatitsoptiongrant
Buyer a credit for the purchase price of the defective article. Upon
return of a defective product to Heatcraft Refrigeration Products
LLC's plant, freight prepaid, by Buyer, correction of such defect by
repair or replacement, and return freight via lowest common carrier,
shallconstitutefullperformancebyHeatcraftRefrigerationProducts
LLC of its obligations hereunder.
(a)
The power supply to the unit must meet the
following conditions:
A. Three phase voltages must
be +/- 10% of nameplate
ratings. Single phase must be
within +10% or -5% of
nameplate ratings.
B. Phase imbalance cannot
exceed 2%.
(b)
(c)
All control and safety switch circuits must be
properly connected according to the wiring
diagram.
The factory installed wiring must not be
changed without written factory approval.
HermeticcompressorsfurnishedbyHeatcraftRefrigerationProducts
LLC are subject to the standard warranty terms set forth above,
except that motor compressor replacements or exchanges shall
be made through the nearest authorized wholesaler of the motor
compressor manufacturer (not at Heatcraft Refrigeration Products
LLC's factory) and no freight shall be allowed for transportation of
the motor compressor to and from the wholesaler.The replacement
motor compressor shall be identical to the model of the motor
compressor being replaced. Additional charges which may be
incurred throughout the substitution of other than identical
replacements are not covered by this warranty.
The foregoing is in lieu of all other warranties, express or implied,
notwithstandingtheprovisionsoftheuniformcommercialcode,the
Magnuson-MossWarranty-FederalTradeCommissionImprovement
Act, or any other statutory or common law, federal or state.
Optional Three-Year Extended Compressor
Warranty
TheEquipmentDealermaypurchasefortheOwneratthetimeofthe
originalinvoiceoftheequipmentaThree-YearLimitedReplacement
Compressor Warranty. This entitles the owner to be reimbursed for
thecostofareplacementcompressor, duringthethirdthroughfifth
year of the life of the compressor.
Heatcraft Refrigeration Products LLC makes no warranty expressed
or implied, of fitness for any particular purpose, or of any other
nature whatsoever, with respect to products manufactured or
sold by Heatcraft Refrigeration Products LLC hereunder, except as
specifically set forth above and on the face hereof. It is expressly
understood and agreed that Heatcraft Refrigeration Products LLC
shall not be liable to buyer, or any customer of Buyer, for direct or
indirect, special, incidental, consequential or penal damages, or for
any expenses incurred by reason of the use or misuse by Buyer or
third parties of said products. To the extent said products may be
considered "Consumer Products,' as defined in Section 101 of the
Magnuson-Mosswarranty-FederalTradeCommissionImprovement
Act, Heatcraft Refrigeration Products LLC makes no warranty of any
kind, express or implied, to "Consumers," except as specifically set
forth above and on the face hereof.
The warranty program functions similarly to the standard warranty
offered.Whenacompressorfailureoccursandtheunitisexchanged
"over the counter" at the authorized wholesaler outlet a salvage
credit is issued along with the invoice for the new compressor.
ReturncopiesofboththecreditandinvoicetotheEquipmentDealer
along with the model and serial number of the condensing unit.
TheEquipmentDealerwillprocessthisclaimwiththeManufacturer
and subsequently reimburse the Owner for the cost of the new
compressor.
This warranty covers the actual compressor only and does not
extend to any labor, trip charges, crane rental, taxes or additional
parts, refrigerant or processing/handling charges required to make
the unit operational.
This equipment is designed to operate properly and produce the
rated capacity when installed in accordance with good refrigeration
industry practices.
Since product improvement is a continuing effort,
we reserve the right to make changes in specifications without notice.
2175 West Park Place Blvd. • Stone Mountain, GA 30087
H-IM-82B-0708
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