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69
Table 55 — Compressor Loading and Unloading Sequences (60 Hz Units) (cont)
COOLING
STAGE
SIZE 064 UNITS
Lead Circuit
Lag Circuit
Active
Cyls
Percent
Capacity
Comp 1
Unloader
U1
Unloader
U1A
Comp 2
Unloader
U2
Unloader
U2A
0
OFF
OFF
OFF
OFF
OFF
OFF
0
0
1
ON
ON
ON
OFF
OFF
OFF
2
17
2
ON
ON
OFF
OFF
OFF
OFF
4
33
3
ON
OFF
OFF
OFF
OFF
OFF
6
50
4
ON
OFF
OFF
ON
ON
ON
8
67
5
ON
OFF
OFF
ON
ON
OFF
10
83
6
ON
OFF
OFF
ON
OFF
OFF
12
100
COOLING
STAGE
SIZE 074,078 UNITS
Lead Circuit
Lag Circuit
Active
Cyls
Percent
Capacity
Comp 1
Unloader
U1
Unloader
U1A
Comp 2
Unloader
U2
Unloader
U2A
0
OFF
OFF
OFF
OFF
OFF
OFF
0
0
1
ON
ON
ON
OFF
OFF
OFF
2
14
2
ON
ON
OFF
OFF
OFF
OFF
4
29
3
ON
OFF
OFF
OFF
OFF
OFF
6
43
4
ON
OFF
OFF
ON
ON
ON
8
62
5
ON
OFF
OFF
ON
ON
OFF
10
81
6
ON
OFF
OFF
ON
OFF
OFF
12
100
COOLING
STAGE
SIZE 088 UNITS
Lead Circuit
Lag Circuit
Active
Cyls
Percent
Capacity
Comp A1
Unloader
UA1
Unloader
UA2
Comp B1
Unloader
UB1
Unloader
UB2
0
OFF
OFF
OFF
OFF
OFF
OFF
0
0
1
ON
ON
ON
OFF
OFF
OFF
2
17
2
ON
ON
OFF
OFF
OFF
OFF
4
33
3
ON
OFF
OFF
OFF
OFF
OFF
6
50
4
ON
OFF
OFF
ON
ON
ON
8
67
5
ON
OFF
OFF
ON
ON
OFF
10
83
6
ON
OFF
OFF
ON
OFF
OFF
12
100
COOLING
STAGE
SIZE 104 UNITS
Lead Circuit
Lag Circuit
Active
Cyls
Percent
Capacity
Comp A1
Unloader
UA1
Comp
A2
Comp B1
Unloader
UB1
Comp
B2
0
OFF
OFF
OFF
OFF
OFF
OFF
0
0
1
ON
ON
OFF
OFF
OFF
OFF
4
20
2
ON
OFF
OFF
OFF
OFF
OFF
6
30
3
ON
ON
OFF
ON
OFF
OFF
8
40
4
ON
ON
OFF
ON
OFF
OFF
10
50
5
ON
OFF
OFF
ON
OFF
OFF
12
60
6
ON
ON
ON
ON
ON
OFF
12
60
7
ON
ON
ON
ON
OFF
OFF
14
70
8
ON
OFF
ON
ON
OFF
OFF
16
80
9
ON
ON
ON
ON
ON
ON
16
80
10
ON
ON
ON
ON
OFF
ON
18
90
11
ON
OFF
ON
ON
OFF
ON
20
100