Bryant 581C024--060 - Manual (Page 49)

49
C06145
Fig. 57 --- Cooling Charging Chart, 581B 048 with
Optional Perfect Humidity Adaptive Dehumidification
System
C06146
Fig. 58 --- Cooling Charging Chart, 581B 072 with
Optional Perfect Humidity Adaptive Dehumidification
System
To Use Cooling Charging Chart, Standard Unit
Take the outdoor ambient temperature and read the suction
pressure gauge. Refer to charts to determine what suction
temperature should be. If suction temperature is high, add
refrigerant. If suction temperature is low, carefully recover some
of the charge. Recheck the suction pressure as charge is adjusted.
Example (Fig. 52):
Outdoor Temperature
75°F . . . . . . . . . . . . . . . . . . . . . . . . .
Suction Pressure 70 psig . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suction Temperature should be 48°F . . . . . . . . . . . . . . . . . .
(Suction temperature may vary ± 5°F.)
If a charging device is used, temperature and pressure readings
must be accomplished using the charging charts.
To Use Cooling Charging Charts, Units With Perfect
Humidityt Adaptive Dehumidification System
Refer to charts (Fig. 55--58) to determine the proper leaving
condenser pressure and temperature.
Example (Fig. 55):
Leaving Condenser Pressure
250 psig . . . . . . . . . . . . . . . . .
Leaving Condenser Temperature 105°F . . . . . . . . . . . . . . .
NOTE: When using the charging charts, it is important that only
the subcooling/reheat dehumidification coil liquid line solenoid
valve be energized. The subcooling/reheat dehumidification coil
liquid line solenoid valve MUST be energized to use the charging
charts and the outdoor motor speed controller jumpered to run the
fan at full speed.
Step 10 —Flue Gas Passageways
To inspect the flue collector box and upper areas of the heat
exchanger:
1. Remove the combustion blower wheel and motor
assembly according to directions in Combustion-Air
Blower section below.
2. Remove the 3 screws holding the blower housing to the
flue cover.
3. Remove the flue cover to inspect the heat exchanger.
4. Clean all surfaces as required using a wire brush.
581B
,C