-19-
difference is more than 10 ft, use both inverted U trap and suction
accumulator.
4) If the condensing unit is located more than 10 ft above the evaporator unit,
use U trap to aid oil returning to the compressor.
5) Complete pipe brazing, check solenoid valve and expansion valve restrictions
and perform leak testing.
6) Hook up the drain line and check if water drains.
6. Water Piping
If a water pump is used, install it before the water inlet so that the condenser
cooling water is fed from the discharge side of the pump.
Model No
Condensing Unit
Water Flow
(75°F inlet
,
gal/min)
Water-
in
Connecti
on
Water-
out
Connecti
on
Water
Pressur
e Drop
(PSI)
WM-
2500SSIWC
WM-250SCUR-
WC
0.2
3/8”
FPT
1/2" ODF
SOLDER
0.2
WM-
4500SSIWC
WM-450SCUR-
WC
0.4
3/8”
FPT
1/2" ODF
SOLDER
0.2
7. Connecting Electrical Wires
Connect all electrical components using the wiring diagrams in accordance with
all state and local codes.
8. Evacuating, Charging and Starting the System
1-Manifold High or Low Pressure Hose; 2-Receiver Discharge or
Compressor Suction Port; 3-Liquid or Suction Line; 4-Pressure Control;
BACK POSITION
FRONT POSITION
MIDDLE POSITION
Fig. 8 ROTALOCK Valve Operation
