Heatcraft Refrigeration Products H-IM-82B User Manual
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
Specications ....................................................................................2
Dimensional Diagrams ..................................................................3
Installation and
Operation Guide
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
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
Performance / Electrical Data
Table 1. COOLERS – Air Defrost Systems
1. Owner's Operating Instructions
Model
PTT047H2B 4,980 5,300 208-230/1/60 8.6 15 7.3 350 No — B
PTT063H2B 6,680 7,100 208-230/1/60 9.8 15 9.9 550 No — B
PTT072H2B 7,630 8,060 208-230/1/60 10.9 15 9.3 500 No — B
PTT099H2B 10,490 11,340 208-230/1/60 17.1 20 14.7 875 No — C
PTT099H2C 10,490 11,340 208-230/3/60 14.7 20 13.3 875 No — C
PTT128H2B 13,570 14,520 208-230/1/60 20.1 30 17.2 825 No — C
PTT128H2C 13,570 14,520 208-230/3/60 14.1 20 12.8 825 No — C
35˚F Box Temp 38˚F Box Temp
BTUH @ 95˚F
Voltage MCA MOPD
Unit
Amps
Evap
CFM
Plug
Supplied
Matching
Receptacle
Table 2. FREEZERS – Electric Defrost Systems
BTUH @ 95˚F
Model
PTT021L6B 2,680 2,160 1,340 208-230/1/60 7.6 15 6.5 350 No —- B
PTT031L6B 4,220 3,190 2,060 208-230/1/60 13.8 15 11.6 550 No —- B
PTT044L6B 5,870 4,530 3,400 208-230/1/60 15.9 20 13.3 520 No —- B
PTT052L6B 7,000 5,360 3,910 208-230/1/60 18.1 20 15.5 900 No —- C
PTT052L6C 7,000 5,360 3,910 208-230/3/60 15.0 15 11.3 900 No —- C
PTT069L6B 9,060 7,100 5,250 208-230/1/60 23.8 30 20.0 875 No —- C
PTT069L6C 9,060 7,100 5,250 208-230/3/60 15.9 20 14.2 875 No —- C
0˚F
Box Temp
-10˚F
Box Temp
-20˚F
Box Temp
Voltage MCA MOPD
Unit
Amps
Evap
CFM
Plug
Supplied
Matching
Receptacle
NEMA
NEMA
Fig.
Fig.
Table 3. Specications
Model Refrigerant
PTT047H2B 22 27 6,700 192 100
PTT063H2B 22 29 8,700 207 100
PTT072H2B 22 32 9,700 211 100
PTT099H2B 22 47 16,800 270 127
PTT099H2C 22 47 16,800 265 127
PTT128H2B 22 52 18,000 290 127
PTT128H2C 22 52 18,000 285 127
PTT021L6B 404A 26 4,300 213 100
PTT031L6B 404A 28 6,300 221 100
PTT044L6B 404A 29 9,900 225 100
PTT052L6B 404A 45 10,900 275 127
PTT052L6C 404A 45 10,900 270 127
PTT069L6B 404A 47 15,300 280 127
PTT069L6C 404A 47 15,300 275 127
Refrigerant Charge
(oz.)
COOLERS
FREEZERS
Total Heat of
Rejection (BTUH)
Approx. Net Weight
lbs. kg
2
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 38 1/2" panel opening required for evaporator section of large cabinet sizes.
* 23.5" with weather hood.
1. Owner's Operating Instructions
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
Recommended Unit Placement For PTT Models
Some general rules for the evaporator section placement which
must be followed are:
1. Owner's Operating Instructions
1. Ensure that the structural integrity of the box can
withstand the weight of the top mounted equipment.
2. The air pattern must cover the entire room.
NEVER locate the evaporator section over doors.
3.
4. Location of aisles, racks, etc. must be known.
5. 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.
Top View
One System
Evaporator
Compressor
Evaporator
Airow
NOTE: Always avoid placement of
units directly above doors
and door openings.
Section
Section
Top View
Two Systems
Multiple units must be spaced
properly to provide adequate air
circulation.
Evaporator
Compressor
W
Min.
Evaporator
Airow
W = Unit Width
Section
Section
2 x Width
Min.
Evaporator
Airow
Evaporator
Section
Compressor
Section
W
Min.
4
Rigging
Trim Pieces (4)
Overlap as Shown
Evaporator Grill
Self Drilling Screw
Ceiling of Walk-in.
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
be held apart by spacer bars. The mounting platform or base
should be level and located so as to permit free access of
supply air. The unit weather hood may be removed for the
rigging process. The condensing unit cover (wrapper) should
be left in place.
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 Ring
Installation
Detail
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
attach unit to ceiling. Through-bolts should be insulated or
non-conductive to prevent sweating. The chassis is weather
stripped around the air grille and will seal to the box roof.
The trim ring (shipped loose), when provided, should be
installed around the air diuser when secured with the
hardware provided. Be sure to adhere to your local standard
construction codes.
1. Owner’s Operating Instructions
Inspection
1. Each shipment should be carefully checked against the
bill of lading.
2. The shipping receipt should not be signed until all items
listed on the bill of lading have been accounted for.
3. Check packaging for signs of damage.
4. Any shortage or damages should be immediately
reported to the delivering carrier.
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.
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 nal destination.
8. Complete warranty return card for each unit and mail to
Heatcraft Refrigeration Products.
Table 4. Control Factory Default Settings
PTT
Models
Cooler Models
All cabinet sizes
Freezer Models
Med. & Lg. cabinet
Temperature
Set Points
35˚F
Defrost
Start Times
Every 3 hours of
compressor run time
-10˚F 4 / day 40 min. 2 min. 2 min. 65˚F
General Safety Information
1. Installation and maintenance to be performed only by
licensed contractor.
2. Ensure that the structural integrity of the box can
withstand the weight of the
unit weights).
3. Avoid contact with sharp edges and coil surfaces.
They are a potential injury hazard. Wear gloves during
moving and rigging.
4. Make sure all power sources are disconnected before
any service work is done on units.
Defrost Duration
(Maximum)
Drip
Time
60 min. – – 38˚F
(See page 2, Table 3 for
Fan
Delay
Defrost Termination
Set Point
5
The Outdoor comes standard with the
following additional components:
• Crankcase Heater
1. Owner's Operating Instructions
• 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
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 specied by the
panel manufacturer.
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 prole to prevent contact with
the system. (See Figure 1, page 7) Check the
top of the curb with a level. units require
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).
3. Install the membrane onto the roof of the box and
over the curb. Fasten to roof per panel
manufacturer's instructions. The membrane
material should be slit over the evaporator grill
opening the aps 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 aect the gasket to-curb sealing or trap rainwater adjacent to the
curb.
4. Remove the weather hood from the system.
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.
Condensate Drain
Outlet Location
8. Remove compressor compartment cover for
access to electrical box.
9. Connect power wiring in accordance with all
applicable building and electrical codes.
10. Reinstall condensing unit cover(s).
11. Reinstall the protective weather hood.
(See Figure 4, page 7)
12. Apply power and check for proper operation.
Drain Line
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.
General Safety information:
Do NOT lift the by the weather hood.
This product is not designed to be transported while
installed or operating.
7. Install trim pieces (if used) around the ceiling
opening in cooler.
6
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