Trane A4AC3018A1000A Installer's Manual page 21

STEP 6 - Adjust refrigerant level to attain
proper gage pressure.
Add refrigerant if the Liquid Gage Pressure
is lower than the chart value.
1. Connect gages to refrigerant bottle
and unit as illustrated.
2. Purge all hoses.
3. Open bottle.
4. Stop adding refrigerant when liquid
line temperature and Liquid Gage
Pressure matches the charging chart
Final Subcooling value.
Recover refrigerant if the Liquid Gage Pres-
sure is higher than the chart value.
STEP 7 - Stabilize the system.
1. Wait 20 minutes for the system condi-
tion to stabilize between adjustments.
Note: When the Liquid Line Temperature and
Gage Pressure approximately match the chart,
the system is properly charged.
2. Remove gages.
3. Replace service port caps to prevent
leaks. Tighten finger tight plus an ad-
ditional 1/6 turn.
STEP 8 - Verify typical performance.
Refer to System Pressure Tables to verify typical
performance.
88-A4AC3001-1C-EN
20 MIN.
(Example only - see Pressure Tables)
R-410A REFRIGERANT CHARGING CHART
°
DESIGN SUBCOOLING ( F)
LIQUID
8 9 10 11
TEMP
°
( F)
LIQUID GAGE PRESSURE (PSI)
55 179 182 185 188
60 195 198 201 204
65 211 215 218 222
70 229 232 236 240
75 247 251 255 259
80 267 271 275 279
85 287 291 296 300
90 309 313 318 322
95 331 336 341 346
100 355 360 365 370
105 381 386 391 396
110 407 413 418 424
115 435 441 446 452
120 464 470 476 482
125 495 501 507 514
Refer to Service Facts or
Installer's Guide for charging method.
OD 13/14 SEER AC only
18 24/25 30/31 36/37 42/43
Suction Pressure
OD Temp ID Wet Bulb
110 71 160 159 156 157
67 154 152 150 149
63 148 144 144 142
59 142 137 138 135
100 71 156 155 152 153
67 150 148 146 145
63 144 141 140 138
59 138 134 134 132
90 71 152 152 150 149
67 146 145 144 143
63 140 138 138 135
59 136 131 132 129
80 71 150 149 148 147
67 144 142 142 141
63 138 135 136 133
59 134 129 130 127
70 71 148 147 146 145
67 142 140 140 138
63 136 133 134 131
59 130 126 128 125
60 71 146 145 144 143
67 140 138 138 136
63 134 131 132 129
59 128 124 126 123
OD Temp Liquid Pressure
115 475 483 480 480
110 445 453 450 450
105 415 425 420 420
100 390 398 390 395
107 °F
12 13 14
191 195 198
208 211 215
225 229 232
243 247 251
263 267 271
283 287 291
304 309 313
327 331 336
351 355 360
376 381 386
402 407 413
429 435 441
458 464 470
488 495 501
520 527 533
48 60
158 154 158
150 148 148
142 140 140
135 132 132
154 152 154
147 144 146
138 136 138
131 130 130
152 148 150
143 142 142
136 134 134
129 128 126
150 146 148
141 138 140
134 132 132
127 126 124
147 144 146
139 136 138
132 130 130
125 124 122
145 142 144
137 134 136
130 128 128
123 122 120
21
485 480 505
455 450 470
425 425 440
398 395 415