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ComPak
®
Series - Installation, Operation and Maintenance |
45
ComPak
®
Series IOM
Sizing:
• The lines must be sized and routed so that oil is carried through the system. Using smaller lines than
recommended will give excessive pressure drops, resulting in reduced capacity and increased power
consumption. Oversized lines could result in an oil flow problem within the system and possible compressor
damage.
• Excessive pressure drops in the liquid line may cause flashing of the refrigerant and a loss of a liquid seal
at the expansion valve inlet. A reduction in capacity may then occur because the presence of gaseous
refrigerant will partially block the expansion valve. Using hot gas and liquid line sizes recommended in
the Air Cooled Condenser section for these units and the proper system refrigerant charge will prevent this
problem.
• Discharge lines should be designed to prevent condensed refrigerant and oil from draining back to the
compressor during OFF cycles. Use the following guidelines.
• The highest point in the discharge line should be above the highest point in the condenser coil.
• The hot gas line should loop toward the floor if the condenser is located above the ComPak®
unit, especially if the hot gas riser is long.
Figure 4-17. ACC Refrigerant Piping
DISCHARGE LINE
Pitch in
Direction of
refrigerant flow
LIQUID LINE
AIR-COOLED
CONDENSER
DISCHARGE LINE
Pitch in
Direction of
refrigerant flow
LIQUID LINE
AIR-COOLED
CONDENSER
TOP OF
CONDENSER
COIL
DISCHARGE LINE
LIQUID LINE
AIR-COOLED
CONDENSER
CONDENSER COIL
REPLACEABLE CORE FILTER DRIER
(Sporlan C-48XX - XX = based on liquid line size)
Pitch in
Direction of
refrigerant flow
ACC LOCATED ABOVE
ACC LOCATED BELOW
ACC LOCATED LEVEL
