19
Installing Refrigeration Lines
The Evaporator and Condensing units should be piped according to the following piping
schematic:
Piping Legend
1. The 3/8"ODS liquid service valve located on Condenser Module.
2. Hermetic liquid line filter drier (shipped loose). Install with the directional flow arrow as
shown.
3. Liquid line sight glass with moisture indicator (shipped loose).
4. Liquid line refrigeration piping in accordance with Line Sizing Chart.
5. Factory installed liquid line solenoid valve (normally closed) (Valve Control
configurations only).
6. Factory installed thermostatic expansion valve.
7. Factory installed suction service valve to use for setting expansion valve superheat.
8. Insulated suction line refrigeration piping in accordance with Line Sizing Chart.
9. 5/8"ODS suction service valve located on Condenser Module.
WHEN BRAZING COPPER TUBING TO THE SERVICE VALVES, USE 95/5
SOLDER AND SOLDERING FLUX. DO NOT USE SILVER SOLDER BECAUSE
IT REQUIRES HIGHER HEAT THAT WILL DAMAGE THE SERVICE VALVES.
Line Sizing Chart
Refer to the Line Sizing Chart below for selecting the appropriate tubing size for the
length of the piping run. Note that the recommended line size may not match the
connection ports on the Condensing unit and the Evaporator. Refrigeration grade fittings
must be supplied by the installing technician to make the necessary transitions.
Transitions should be made as close to the unit as possible
. Suction line routing
must be designed to ensure oil return to the Condensing unit.
