Condensing Unit Wiring Diagram; System Start-Up / Final Charge Adjustment - LG Central Air Conditioning Remote Condensing Unit Installation Instructions & Use And Care

CONDENSING UNIT WIRING DIAGRAM

Condenser
Motor
S
C
Compressor

SYSTEM START-UP / FINAL CHARGE ADJUSTMENT

• Set temperature setting on thermostat at least 3 degrees below the current indoor temperature in the house.
• Allow the unit to run for 15 minutes.
• Attach thermocouples to both the liquid and vapor lines within 2 feet of service valves.
• Place third thermocouple to sense outdoor air temperature near unit.
• Record low pressure and high pressure on the gauge set.
• Record thermocouple temperatures of liquid line, vapor line, and outdoor temperature.
• Record indoor air temperature near return duct.
• Refer to temperature-pressure chart for proper refrigerant.
• Look up low pressure reading on Table 5. Record saturated vapor temperature corresponding to the suction
pressure.
• Calculate actual superheat as follows:
SH = T - T
vapor line sat. vapor
• Look up high pressure reading on Table 6. Record saturated liquid temperature corresponding to the liquid
line pressure.
• Calculate actual subcooling as follows:
SC = T - T
Iiquid line sat liquid
Black
Yellow
Capacitor
Yellow
Red
Black
Red
R
CONDENSING UNIT
Power Supply
L1 L2 GND
Ground
L1 L2
Y
T1 T2
C
Contactor
Factory Wiring 208/230VAC, 60Hz
Field Wiring 208/230VAC, 60Hz
Field Wiring 24VAC, 60Hz
— 8 —
R
W
Y
G
C
• Indoor Air Handler
• Gas Furnace
Fig. 7