Carrier JK034-074 Air Conditioner User Manual


 
Table 19 Compressor Loading and Unloading Sequences
COOLING
STAGE
SIZE 034 UNITS
Lead Circuit Lag Circuit
Active
Cylinders
Percent
Capacity
Comp 1
Unloader
U1
Unloader
U2
Comp 2
0 OFF OFF OFF OFF 0 0
1 ON ON ON OFF 2 17
2 ON ON OFF OFF 4 33
3 ON OFF OFF OFF 6 50
4 ON ON ON ON 8 67
5 ON ON OFF ON 10 83
6 ON OFF OFF ON 12 100
COOLING
STAGE
SIZE 038 UNITS
Lead Circuit Lag Circuit
Active
Cylinders
Percent
Capacity
Comp 1
Unloader
U1
Unloader
U2
Comp 2
0 OFF OFF OFF OFF 0 0
1 ON ON ON OFF 2 14
2 ON ON OFF OFF 4 28
3 ON OFF OFF OFF 6 42
4 ON ON ON ON 6 72
5 ON ON OFF ON 8 86
6 ON OFF OFF ON 10 100
COOLING
STAGE
SIZE 044 UNITS
Lead Circuit Lag Circuit
Active
Cylinders
Percent
Capacity
Comp 1
Unloader
U1
Comp 2
0 OFF OFF OFF 0 0
1 ON ON OFF 2 25
2 ON OFF OFF 4 50
3 ON ON ON 6 75
4 ON OFF ON 8 100
COOLING
STAGE
SIZE 048 UNITS
Lead Circuit Lag Circuit
Active
Cylinders
Percent
Capacity
Comp 1
Unloader
U1
Unloader
U2
Comp 2
0 OFF OFF OFF OFF 0 0
1 ON ON ON OFF 2 19
2 ON ON OFF OFF 4 38
3 ON OFF OFF OFF 6 58
4 ON ON ON ON 6 62
5 ON ON OFF ON 8 81
6 ON OFF OFF ON 10 100
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