8
installation
FIGURE 4
Aluminum Flange Assembly
FIGURE 5
Hot Gas Interpiping
Flange fiber gasket
Hex nut
SAE flat washer
Coil
System
SAE flat washer
Steel socket-weld
male flange
Hex head bolt
with isolation sleeve
Fiber isolation
washer
Aluminum female flange
6.3 HOT GAS INTERPIPING
If the unit was ordered with hot gas defrost the drawing shipped
with the unit will contain the piping connection locations for the
hot gas inlet and the condensate relief.
6.4 EVACUATION AND LEAK TEST
When all refrigeration connections have been completed, the entire
system must be tested for leaks and then evacuated.
6.5 DXA AND SUCTION ACCUMULATORS
Do not use units with Direct Expansion Ammonia (DXA) feed below
0°F evaporating temperatures unless the compressor system is
designed and protected to handle the overfed liquid by use of a
suction accumulator.
RB, FL
SERIAL
SUCTION
LIQUID
DEFROST RELIEF
HOT GAS
HOT GAS PIPING
PIPING BY SGS
PIPING BY OTHERS
CV = CHECK VALVE BY OTHERS
HOT GAS PIPING
PIPING BY SGS
PIPING BY OTHERS
CV = CHECK VALVE BY OTHERS
HV = HAND BALANCING VALVE BY OTHERS
LIQUID
DEFROST RELIEF
HOT GAS
CV
CV
HV
SUCTION
RB, FL
PARALLEL
