Pressure at suction service port (psig) – Comfort-Aire TGRG Series for R-410A User Manual
Page 53
FIGURE 31
SYSTEM CHARGE CHARTS
92-22904- 41 -02
O
U
T
D
O
O
R
A
M
B
IE
N
T
(°
F
D
B
)
55
65
75
85
95
105
115
175
200
225
250
275
300
325
350
375
400
425
450
475
500
525
120
125
130
135
140
145
150
155
160
165
170
P
R
E
S
S
U
R
E
A
T
L
IQ
U
ID
S
E
R
V
IC
E
P
O
R
T
-
P
S
IG
CONNECT PRESSURE GAUGES TO SUCTION AND LIQUID PORTS ON UNIT.
MEASURE AIR TEMPERATURE TO OUTDOOR COIL.
PLACE AN "X" ON THE APPROPRIATE CHART WHERE THE SUCTION AND LIQUID PRESSURES CROSS.
IF "X" IS BELOW AMBIENT TEMPERATURE LINE, ADD CHARGE AND REPEAT STEP 3.
IF "X" IS ABOVE AMBIENT TEMPERATURE LINE, RECOVER EXCESS CHARGE AND REPEAT STEP 3.
Pressure at Suction Service Port (psig)
2 1/2 TON COOLING
SYSTEM CHARGE CHART - REFRIGERANT 410A
BEFORE FINAL REFRIGERANT CHECK, INDOOR RETURN AIR TEMPERATURE SHOULD BE AT COMFORT
CONDITIONS FOR MOST ACCURATE RESULTS.
TGRG**C/TGRG**E – 2 1/2 TON COOLING
SYSTEM CHARGE CHART - REFRIGERANT 410A
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