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Table 4C — Capacity Control Steps, 130-210 and Associated Modular Units (cont)
UNIT
SIZE
CONTROL
STEPS
LOADING SEQUENCE A LOADING SEQUENCE B
%
Compressors
%
CompressorsDisplacement Displacement
(Approx) (Approx)
190, 290A, 360A,
390B (50 Hz)
A1,B1**
1
2
3
4
5
6
7
8
9
10
11
12
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
11
17
28
33
44
50
61
67
78
83
94
100
B1*
B1
A1,B1*
A1,B1
A1,B1*,B2
A1,B1,B2
A1,A2,B1*,B2
A1,A2,B1,B2
A1,A2,B1*,B2,B3
A1,A2,B1,B2,B3
A1,A2,A3,B1*,B2,B3
A1,A2,A3,B1,B2,B3
190, 290A, 360A,
390B (50 Hz)
A1**,B1**
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
11
17
22
28
33
39
44
50
55
61
67
72
78
83
89
94
100
A1*
A1
A1*,B1*
A1*,B1
A1,B1
A1*,A2,B1*
A1*,A2,B1
A1,A2,B1
A1*,A2,B1*,B2
A1*,A2,B1,B2
A1,A2,B1,B2
A1*,A2,A3,B1*,B2
A1*,A2,A3,B1,B2
A1,A2,A3,B1,B2
A1*,A2,A3,B1*,B2,B3
A1*,A2,A3,B1,B2,B3
A1,A2,A3,B1,B2,B3
11
17
22
28
33
39
44
50
55
61
67
72
78
83
89
94
100
B1*
B1
A1*,B1*
A1,B1*
A1,B1
A1*,B1*,B2
A1,B1*,B2
A1,B1,B2
A1*,A2,B1*,B2
A1,A2,B1*,B2
A1,A2,B1,B2
A1*,A2,B1*,B2,B3
A1,A2,B1*,B2,B3
A1,A2,B1,B2,B3
A1*,A2,A3,B1*,B2,B3
A1,A2,A3,B1*,B2,B3
A1,A2,A3,B1,B2,B3
210, 315A, 390A,
420A/B (60 Hz)
A1,B1
1
2
3
4
5
6
7
11
25
36
56
67
86
100
A1
A1,B1
A1,A2,B1
A1,A2,B1,B2
A1,A2,A3,B1,B2
A1,A2,A3,B1,B2,B3
A1,A2,A3,A4,B1,B2,B3
14
25
44
56
75
86
100
B1
A1,B1
A1,B1,B2
A1,A2,B1,B2
A1,A2,B1,B2,B3
A1,A2,A3,B1,B2,B3
A1,A2,A3,A4,B1,B2,B3
210, 315A, 390A,
420A/B (60 Hz)
A1**,B1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
8
11
22
25
33
36
52
56
63
67
83
86
97
100
A1*
A1
A1*,B1
A1,B1
A1*,A2,B1
A1,A2,B1
A1*,A2,B1,B2
A1,A2,B1,B2
A1*,A2,A3,B1,B2
A1,A2,A3,B1,B2
A1*,A2,A3,B1,B2,B3
A1,A2,A3,B1,B2,B3
A1*,A2,A3,A4,B1,B2,B3
A1,A2,A3,A4,B1,B2,B3
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
210, 315A, 390A,
420A/B (60 Hz)
A1,B1**
1
2
3
4
5
6
7
8
9
10
11
12
13
14
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
9
14
21
25
40
44
51
56
71
75
82
86
96
100
B1*
B1
A1,B1*
A1,B1
A1,B1*,B2
A1,B1,B2
A1,A2,B1*,B2
A1,A2,B1,B2
A1,A2,B1*,B2,B3
A1,A2,B1,B2,B3
A1,A2,A3,B1*,B2,B3
A1,A2,A3,B1,B2,B3
A1,A2,A3,A4,B1*,B2,B3
A1,A2,A3,A4,B1,B2,B3
*Unloaded compressor.
†Compressor unloader, standard.
**Compressor unloader, accessory.
††Two unloaders, both unloaded.
NOTE: These capacity control steps may vary due to lag compressor
sequencing.
22