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5
1. Owner’s Operating Instructions
Table 4. Control Factory Default Settings
PTT
Models
Temperature
Set Points
Defrost
Start Times
Defrost Duration
(Maximum)
Drip
Time
Fan
Delay
Defrost Termination
Set Point
Cooler Models
All cabinet sizes
35˚F
Every 3 hours of
compressor run time
60 min. – – 38˚F
Freezer Models
Med. & Lg. cabinet
-10˚F 4 / day 40 min. 2 min. 2 min. 65˚F
Rigging
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.
Mounting
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.
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.
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
(See page 2, Table 3 for
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.
Trim Pieces (4)
Overlap as Shown
Evaporator Grill
Self Drilling Screw
Ceiling of Walk-in.
Trim Ring
Installation
Detail