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WM-6500DS
WM-6500DS-LA
1/4” OD
1/2” OD
R134a / 32 OZ
WM-8500DS
WM-8500DS-LA
3/8” OD
5/8” OD
R134a / 40 OZ
WM-12030DS
WM-12030DS-LA
3/8” OD
7/8” OD
R134a / 56 OZ
Fig. 9 Liquid Filter Fig. 10 Liquid Indicator
1) The piping starts from
à
condensing unit’s receiver discharge valve
à
liquid
filter
à
liquid indicator
à
liquid line
à
to evaporator unit’s liquid line
connection (assembled with solenoid valve and expansion valve)
à
suction
line connection
à
insulated suction line
à
to condensing unit’s suction valve.
2) Complete pipe brazing, check solenoid valve and expansion valve restrictions
and perform leak testing.
3) Hook up the drain line and check if water drains.
3. Connecting Electrical Wires
Connect all electrical components using the wiring diagrams in accordance with
all state and local codes.
4. Evacuating, Charging and Starting the system
NOTE
The recommended initial charges are used for reference only,
always use the superheat, subcooling and pressure readings
to charge refrigerant properly.
If the unit is equipped with a low ambient condition kit and
installed in the summer, add 15% more refrigerant.
1) Turn both discharge and suction valves in the middle positions.
2) Connect the manifold high or low pressure hose to the discharge or suction
valve and connect it to a vacuum pump.
3) Open the manifold high and low pressure valves to evacuate the system.
4) Close the manifold high and low pressure valves and switch it to a charging
scale.
