Trane TR-SCS Series Installation, Operation And Maintenance Manual page 23

1. The refrigerant then flows to the condenser coil. The
high temperature, high-pressure gas from the
compressor is cooled by the flow of air through the
condenser coil and is condensed into a high-pressure
liquid.
2. For cold weather applications using flooded head
pressure control, the low temperature high-pressure
liquid refrigerant flows to a receiver. The receiver acts
as a storage tank for the liquid refrigerant that is not in
circulation.
3. The refrigerant flows through a liquid sight glass. This
device shows the presence of air, moisture and the
condition of the refrigerant in the system.
4. The low temperature high pressure liquid refrigerant
then flows to the evaporator where it removes heat
and evaporates back into a gas.
5. The refrigerant gas is then drawn back to the
compressor and the cycle is repeated.
The refrigeration circuit must be tested at start-up.
SS-SVX006C-EN
Installation
23