user manual

20
Pressure at Liquid Service Port (psig)
Pressure at Suction Service Port (psig)
Outdoor Ambient (F° DB)
7-1/2 TON CONDENSING UNIT 60HZ.
R
EFRIGERANT R-410A
92-102644-03-01
CAUTION: BEFORE FINAL REFRIGERANT CHECK, INDOOR AIR TEMPERATURE SHOULD BE AT COMFORT CONDITIONS
FOR MOST ACCURATE RESULTS.
INSTRUCTIONS:
1. CONNECT PRESSURE GUAGES TO SUCTION AND LIQUID PORTS ON UNIT.
2. MEASURE AIR TEMPERATURE TO OUTDOOR COIL.
3. PLACE AN "X" ON THE APPROPRI ATE CHART WHERE THE SUCTION AND LIQUID PRESSURES CROSS.
4. IF "X" IS BELOW AMBIENT TEMPERATURE LINE, ADD CHARGE AND REPEAT STEP 3.
5. IF "X" IS ABOVE AMBIEN T TEMPERATURE LINE, RECOVER EXCESS CHARGE AND REPEAT STEP 3.
6. IF CONDENSER FANS ARE NOT RUNNING, THE HEAD PRESSURE CONTROL MAY REQUIRE JUMPERING.
REQUIR E D O U N C ES R-410A
CHARGE PER FOOT OF TUBI N G
TUBE SIZE
O.D. IN.
LIQUID
LINE
VAPOR
LINE
1/2
5/8
1-1/8
1-3/8
1.06
1.65
.22
.34
REFRIGERANT REQUIRED: 239 OZ. WITH 0 FT. OF SUCTION AND LIQUID LINE
115
110
105
100
95
90
85
80
75
70
65
60
55
175
200
225
250
275
300
325
350
375
400
425
450
475
500
525
100 105 110 115 120 125 130 135 140 145 150 155 160 165
FIGURE 13
RSG090
SYSTEM CHARGE CHART
7
1
⁄2 TON CONDENSER WITH 10 TON EVAPORATOR