Pressure Service Ports - Bard FUSION-TEC HR58APA Installation Support Materials

Full Load Cooling
Return Air Temp
Model
(DB/WB)
75/62
HR58 80/67
85/72
Part Load Cooling
Return Air Temp
Model
(DB/WB)
75/62
HR58
80/67
85/72
Low side pressure ± 4 PSIG
High side pressure ± 10 PSIG
Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating
charge being in the system, the charge should be removed and system evacuated and recharged to serial plate
charge weight.
NOTE: Pressure table based on high speed condenser fan operation. If condensing pressures appear elevated
check condenser fan wiring. See "Condenser Fan Operation".

Pressure Service Ports

High and low pressure service ports are installed on
all units so that the system operating pressures can
be observed. Pressures are shown in Table 2.5. It is
imperative to match the correct pressure table to the
unit by model number.
This unit employs high-flow Coremax valves instead of
the typical Shrader type valves.
WARNING! Do NOT use a Schrader valve core removal
tool with these valves. Use of such a tool could result
in eye injuries or refrigerant burns!
To change a Coremax valve without first removing the
refrigerant, a special tool is required which can be
obtained at www.fastestinc.com/en/SCCA07H. See the
replacement parts manual for replacement core part
numbers.
TABLE 2.5
Cooling Pressures
Air Temperature Entering Outdoor Coil °F
Pressure 75 80 85
Low Side 129 130 131
High Side 318 340 365
Low Side 138 139 140
High Side 326 349 374
Low Side 143 144 145
High Side 337 361 387
Air Temperature Entering Outdoor Coil °F
Pressure 75 80 85
Low Side 135 136 136
High Side 283 304 327
Low Side 144 145 145
High Side 290 312 335
Low Side 149 150 150
High Side 300 323 347
90 95 100 105 110 115 120 125
132 133 134 136 137
389 414 440 467 495
141 142 143 145 146
399 425 451 479 508
146 147 148 150 151
413 440 467 496 526
90 95 100 105 110 115 120 125
137 137 138 138 140
350 375 402 428 456
146 147 148 148 150
359 385 412 439 468
151 152 153 154 155
372 398 426 454 484
137 139 140
527 553 584
147 149 150
537 567 599
152 154 155
556 587 620
141 142 143
486 416 547
151 152 153
498 529 561
156 157 158
515 548 581
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