Hot Gas Interpiping; Evacuation And Leak Test; Dxa And Suction Accumulators - SPX SGS REFRIGERATION STC Series User Manual

installation
with isolation sleeve
SAE flat washer
FIGURE 4 Aluminum Flange Assembly

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.
SUCTION
CV
HOT GAS PIPING
PIPING BY SGS
PIPING BY OTHERS
CV = CHECK VALVE BY OTHERS
FIGURE 5 Hot Gas Interpiping
8
Coil
Hex head bolt
Fiber isolation
washer
RB, FL
SERIAL
LIQUID
DEFROST RELIEF
HOT GAS
System
Flange fiber gasket
Hex nut
SAE flat washer
Steel socket-weld
male flange
Aluminum female flange

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
PARALLEL
SUCTION
CV
HOT GAS PIPING
PIPING BY SGS
PIPING BY OTHERS
CV = CHECK VALVE BY OTHERS
HV = HAND BALANCING VALVE BY OTHERS
LIQUID
DEFROST RELIEF
HV
HOT GAS