Trane A4HP4 Installation And Operation Manual page 14

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 Pressure is higher than the chart value.
STEP 7 - 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 gages.
3. Replace service port caps to prevent leaks. Tighten finger tight plus an additional 1/6 turn.
STEP 8 - Verify typical performance.
Refer to System Pressure Curves in this document to verify typical performance.
14
R-410A REFRIGERANT CHARGING CHART
LIQUID
8
TEMP
( F)
°
55 179
60 195
65 211
70 229
75 247
80 267
85 287
309
90
331
95
107 °F
355
100
381
105
407
110
115 435
120 464
125 495
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71,
67, 63 AND 59 DEG F.
500
450
400
350
(4)
300
250
200
55 65
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM
160
71, 67, 63 AND 59 DEG F.
155
150
145
140
(5)
135
130
125
120
115
110
55 65
COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F
Table 14.2
FINAL SUBCOOLING (
°
9 10 11 12
LIQUID GAGE PRESSURE (PSI)
182 185 188 191
198 201 204 208
215 218 222 225
232 236 240 243
251 255 259 263
271 275 279 283
291 296 300 304
313 318 322 327
336 341 346 351
360 365 370 376
386 391 396 402
413 418 424 429
441 446 452 458
470 476 482 488
501 507 514 520
From Dwg. D154557P01 Rev. 3
(Example only)
TAM4A0A36S31 TAM4A0A36S31
Cooling
INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM 80, 70, AND 60
DEG F.
(2) 500
450
400
(3)
350
300
(1)
250
75 85 95 105 115 -5 5 15
OUTDOOR TEMPERATURE (Degree F)
INDOOR ENTERING DRY BULB CURVESTOP TO BOTTOM 80, 70, AND
160
60 DEG F.
150
140
(2)
130
120
110
(3)
100
90
80
70
60
50
(1)
40
75 85 95 105 115 -5 5 15
OUTDOOR TEMPERATURE (Degree F)
F)
13 14
195 198
211 215
229 232
247 251
267 271
287 291
309 313
331 336
355 360
381 386
407 413
435 441
464 470
495 501
527 533
Heating
25 35 45 55 65
25 35 45 55 65
88-A4HP4001-1G-EN