Line Set Refrigerant(Charge) Adjustment And Release Of Charge; Electrical - LG Central Air Conditioning Remote Condensing Unit Installation Instructions & Use And Care

LINE SET REFRIGERANT(CHARGE) ADJUSTMENT AND RELEASE OF CHARGE

Condensing units are factory-charged with enough refrigerant for typical evaporator coil sizes and 25 feet of line
set tubing. Refer to Table 4 for proper refrigerant adjustment.
Table 4
Liquid Line OD (in)
1/4"
5/16"
3/8"
1/2"
If line set is different from 25 feet, adjust charge as follows:
Example 1: 40 feet line set, 3/8" Liquid Line, 3/4", Vapor Line
40 ft - 25 ft = 15 ft x .58 oz/ft = 9 ounces of additional charge
Example 2: 15 feet line set, 3/8" Liquid Line, 7/8" Vapor Line
15 ft - 25 ft = -10 ft x .58 oz/ft = 6 ounces of charge to takeout
If additional charge is needed, add charge to line set prior to releasing charge.
If charge needs to be reduced, recover charge during final charge adjustment.
Factory Charge Release
With gauge set valves closed, open both service valves.

ELECTRICAL

Warning! To avoid personal injury or death, disconnect power to unit prior to electrical wire connec-
tions.
1. Open disconnect switch.
2. Trip circuit breaker to indoor air handler or gas furnace.
3. Select proper wire size per National Electric Code.
4. Connect power wires and ground wire as shown in Figure 7
Warning! Electrical ground wire must be connected to the unit's metal cabinet to prevent a
ground fault and avoid personal injury or death. Failure to properly ground unit can result in
personal injury, death, fire, and property damage.
5. Use 18AWG wire for 24 volt control connections..
6. Connect 24 volt wires from indoor unit as shown in Figure 7.
7. Close control box to unit.
8. Reset circuit breaker to indoor air handler or gas furnace.
9. Close disconnect switch for outdoor unit.
Adjustment (oz/ft)
0.22
0.39
0.58
1.14
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