Carrier 53KHRT 12-18-24 Crystal, Installation Manual, Page: 48 / 54

46
TEST RUNNING (Cont.)
20.3 STEPS OF COOLING TEST RUNNING for model 53KHRT12
(1) Move circuit breaker to ON position.
(2) Operate the system for cooling at high fan speed
by using wireless remote control
(3) After system operation becomes stabilized:
- Measure low pressure to check correct
refrigerant charge. (See figure & table)
- Measure total Amps consumed by the system.
System Cooling Test Running
SYSTEM MODEL 53KHRT12 53KHRT18
AMBIENT TEMP ºC 35 46 52 35 46 52
LOW PRESSURE PSI
70 74 76 60 62 63
TOTAL AMPS 5.6 7.2 8.1 8.9 10.4 11.2
Note:
Readings at 220 volt and 27 ºC return air to indoor unit and high speed of indoor unit motor.
20.3 STEPS OF COOLING TEST RUNNING for models 53KHRT18 & 53KHRT24
(1) Move circuit breaker to ON position.
(2) Operate the system for cooling at high fan speed
by using wireless remote control
(3) After system operation becomes stabilized:
- Measure low pressure to check correct
refrigerant charge. (See figure & table)
- Measure total Amps consumed by the system.
System Cooling Test Running
SYSTEM MODEL 53KHRT24
AMBIENT TEMP ºC 35 46 52
LOW PRESSURE PSI
69 72 73.5
TOTAL AMPS 11.7 13.3 14.2
Note:
Readings at 220 volt and 27 ºC return air to indoor unit and high speed of indoor unit motor.
Outdoor Unit
Details
(1)
(1) Low Pressure Measuring.
(1) Low Pressure Measuring.
(1)
Outdoor Unit Details