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Table 5-5
Compressor Sequence
Unit
Control
1A
Size
Step
(1K2) (1K5) (1K1) (1K19)
1
Off
2
Off
80 Ton
3
On
4
On
5
On
6
On
1
Off
2
Off
100 Ton
3
Off
4
Off
5
On
6
On
1
Off
2
Off
120 Ton
3
Off
4
Off
5
On
6
On
Figure 5-4
Typical Compressor Locations
Circuit # 1
% Loaded
1B
1C
1D
CKT #1
Off
On
N/A
38%
Off
On
38%
On
Off
63%
On
Off
63%
On
On
100%
On
On
100%
Off
On
On
40%
Off
On
On
40%
On
On
On
70%
On
On
On
70%
On
On
On
100%
On
On
On
100%
Off
On
On
50%
Off
On
On
50%
On
On
On
75%
On
On
On
75%
On
On
On
100%
On
On
On
100%
System Start-Up (Continued)
Circuit # 2
2A
2B
2C
2D
(1K3) (1K6) (1K4) (1K20)
Off
Off
Off
N/A
Off
Off
On
Off
Off
On
On
On
Off
On
On
Off
On
On
On
Off
Off
Off
Off
Off
Off
On
On
Off
Off
On
On
Off
On
On
On
Off
On
On
On
On
On
On
On
Off
Off
Off
Off
Off
Off
On
On
Off
Off
On
On
Off
On
On
On
Off
On
On
On
On
On
On
On
56
% Loaded % Loaded
CKT #2
Unit
0%
19%
38%
38%
38%
50%
63%
63%
63%
81%
100%
100%
0%
20%
40%
40%
40%
55%
70%
70%
70%
85%
100%
100%
0%
25%
50%
50%
50%
63%
75%
75%
75%
88%
100%
100%
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