Trane ComfortLink II 4TWL9060A1000B - Charging the Unit; Stabilizing System and Gage Pressure

22
18-BC100D1-1D-EN
Charging the Unit
Table 29. Stabilize the system
1. Wait 20 minutes for the system condition to stabilize between
adjustments.
Note: When the Liquid Line Temperature and Gage Pressure
approximately match the chart, the system is properly
charged.
2. Remove gauges.
3. Replace service port caps to prevent leaks. Tighten finger tight
plus an additional 1/4 turn.
20 MIN.
Table 30. Proper Gage Pressure
Measure the liquid line temperature and pressure at the outdoor unit’s
service valve.
Measure Liquid Line Temp = ________________________°F
Liquid Gage Pressure = ________________________ PSI
Final Subcooling Value = ________________________ °F
107 °F
Table 31. Verify Performance
4. Refer to System Pressure Curves in the Service Facts document to
verify typical performance.
PRESSURE CURVE SAMPLE
Cooling @ 1450 SCFM Heating @ 1350 SCFM
DISCHARGE PRESSURE (PSIG)
OUTDOOR TEMPERATURE (Degree F)
SUCTION PRESSURE (PSIG)
110
115
120
125
130
135
140
145
150
155
160
165
170
40 60 80 100 120
200
250
300
350
400
450
500
550
40 60 80 100 120
(1)
(1)
(3)
(3)
(5)
(4)
(2)
(2)
INDOOR ENTERING
WET BULB CURVES
TOP TO BOTTOM
71, 67, 63 AND 59 DEG F.
INDOOR ENTERING
WET BULB CURVES
TOP TO BOTTOM
71, 67, 63 AND 59 DEG F.
30
40
50
60
70
80
90
100
110
120
130
140
-5 5 15 25 35 45 55 65
200
250
300
350
400
450
500
-5 5 15 25 35 45 55 65
INDOOR ENTERING
DRY BULB CURVES
TOP TO BOTTOM
80, 70, AND 60 DEG F.
INDOOR ENTERING
DRY BULB CURVES
TOP TO BOTTOM
80, 70, AND 60 DEG F.