Final Charge Adjustment; For Txv - LG Central Air Conditioning Remote Condensing Unit Installation Instructions & Use And Care

Table 5
Saturated Suction Temperature (R-22)
Suction Pressure
(PSIG)
60.1
62.8
65.6
68.5
71.4
74.5
77.6
80.7
84
87.3
90.8
94.3

FINAL CHARGE ADJUSTMENT

Caution! Do not ovrcharge unit with refrigerant. Overcharged unit may result in compressor
damage or personal injury.
For Piston (Orifice) Metering:
Look up proper superheat for given outdoor air temperature and return air temperature (Table 7).
If actual superheat is above the proper superheat amount, more refrigerant must be added.
If actual superheat is below the proper superheat amount, remove small quantity of refrigerant.
Table 7
Outdoor Temperature (˚F)
105
100
95
90
85
80
75
70
65
60

For TXV:

Look up proper subcooling level for TXV listed on rating plate.
If actual subcooling is below the proper subcooling by more than 2˚F, refrigerant must be added.
If actual subcooling is greater than the proper subcooling by more than 2˚F, remove small quantity of
refrigerant.
Saturated Suction
Temperature (˚F)
34
36
38
40
42
44
46
48
50
52
54
56
System Superheat
Return Air Temperature (˚F, DB)
65 70
- -
- -
- -
- -
- -
- 6
- 10
7 14
13 19
17 25
— 9 —
Table 6
Saturated Suction Temperature (R-22)
Suction Pressure
(PSIG)
195.9
210.7
220
229.5
239.3
249.4
259.8
270.5
281.6
289.1
300.6
308.5
75 80
- 2
- 5
4 10
7 14
10 17
14 21
18 25
22 29
26 32
30 34
Saturated Suction
Temperature (˚F)
102
105
108
111
114
117
120
123
126
128
131
134
85
4
8
13
18
22
26
29
32
35
37