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DPS Component Description
Compressor Compartment
Prior to start-up, verify all shipping brackets are removed and
the compressor foot bolts are secured.
Figure 19: Piping Brackets
Figure 20: Compressor Brackets
Variable Speed Compressor
A variable speed compressor (COMP1) is used on all DPS(H)
003–015. On small cabinet units (3–6 Tons) the variable speed
compressor will be the only one present. On medium cabinet
units (7–15 Tons) the variable speed compressor will be on the
left. The discharge of the variable speed compressor is located
on the side and the suction is located on the top.
These pipes can also be identified by recalling that suction
lines will always be larger than discharge lines. The side
discharge design is used to create a positively pressurized
crank case that returns oil to the scroll set even during low turn
down conditions.
Figure 21: Compressor Suction and Discharge on Medium
Cabinet (7.5T) Heat Pump (DPH)
Fixed Speed Compressor (DPS 007–015 only)
The fixed speed compressor (COMP3) is used on all medium
cabinet (7–15 Ton), DPS, units. This compressor will always be
located on the right and like the variable speed has the suction
line on the top of the dome entering the scrolls and a discharge
exiting from the side of the shell.
Figure 22: Compressor Tandem on Medium Cabinet
Compressor Suction Line
Compressor Suction Line
Compressor Discharge Line
Compressor Discharge Line
Variable Speed
Variable Speed
Compressor
Compressor
(COMP 1)
(COMP 1)
Fixed Speed
Fixed Speed
Compressor
Compressor
(COMP 3)
(COMP 3)
Refrigeration System
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25
IM 1125-13 • REBEL ROOFTOPS