92-22904- 41 -02
OUTDOOR AMBIENT (°F DB)
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
PRESSURE AT LIQUID SERVICE PORT - PSIG
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.
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