WARNING
Do not attempt to pump Total System Charge
into outdoor unit for maintenance or service.
This may cause damage to the compressor or
other components. Recover and weigh System
Charge into an appropriate recovery cylinder
for any instances requiring evacuation.
CAUTION
It is unlawful to knowingly vent, release, or
discharge refrigerant into the open air during
repair, service, maintenance or the final
disposal of this unit.
Charging with gauges
About this task:
CAUTION
Refrigerant charging must only be carried out by a
qualified air conditioning contractor.
Note: All pressures/subcool valves shown are with
the compressor on high stage. System must be
charged with the compressor at full capacity.
All units include a cooling charging chart for the most
common indoor application in upflow orientation. For all
other cooling charging charts and the heating charging
charts, see Table 3 to Table 44. You can also access
these charts in the Service Application Data section at
www.simplygettingthejobdone.com.
CAUTION
Compressor damage will occur if system is improperly
charged. On new system installations, charge system
according to the Tabular Data Sheet for the matched
coil and follow guidelines in this instruction.
To charge with gauges, follow these steps:
1. Before using the gauges, confirm that the gauges
are accurate by comparing the gauges against a
calibrated pressure gauge that has been calibrated
against a national standard. If a calibrated pressure
gauge is not available, place a R-410A virgin
refrigerant container in a conditioned space long
enough to come to temperature equilibrium with
the surroundings. Then measure the temperature
of the air and the pressure of the refrigerant and
compare it to the following table:
Table 2: R-410A saturation properties
Temp
(°F)
Pressure
(psig)
Temp
(°F)
Pressure
(psig)
Temp
(°F)
Pressure
(psig)
40 119 75 218 110 365
45 130 80 236 115 391
50 143 85 255 120 418
55 156 90 274 125 447
60 170 95 295 130 477
65 185 100 317 – –
70 201 105 341 – –
2. Locate the applicable cooling chart in Table 3 to
Table 23 or heating chart in Table 24 to Table 44 for
the indoor coil and orientation. Use the method
outlined in Measuring indoor airflow to calculate
the airflow, then consult the correct table and
match the liquid pressure to that airflow.
Subcooling charging charts
Table 3: 1.5 ton cooling charging chart for XAF*24B,
XAF*30C, JH(E,V)*18B, and JH(E,V)T*24C in upflow
Indoor wet bulb (°F) at 80°F dry bulb
57 62 67 72
Outdoor
ambient
DB (°F)
Pressure (psig) and subcooling
(°F) at liquid base value
55 195 (7) 196 (7) 198 (7) 203 (5)
60 213 (6) 214 (7) 216 (6) 219 (5)
65 231 (6) 231 (7) 234 (6) 236 (5)
70 249 (5) 249 (7) 252 (6) 254 (5)
75 266 (5) 267 (7) 269 (6) 272 (6)
80 289 (5) 289 (7) 292 (6) 295 (6)
85 311 (6) 311 (7) 314 (6) 317 (6)
90 333 (7) 333 (7) 336 (6) 339 (6)
95 355 (8) 355 (8) 358 (7) 361 (7)
100 384 (8) 384 (8) 387 (7) 390 (7)
105 413 (8) 413 (8) 415 (8) 419 (7)
110 441 (8) 441 (8) 443 (8) 447 (7)
115 470 (8) 469 (9) 472 (9) 475 (8)
120 498 (8) 497 (9) 500 (9) 503 (8)
125 527 (9) 526 (9) 528 (9) 532 (9)
R-410A Outdoor Split-System Heat Pump Installation Manual - YH2E / THE2 / RHP143 Series 15
Johnson Controls Ducted Systems
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