Carrier Ecologic Series 3 Controls, Start-Up, Operation, Service, And Troubleshooting page 85

The following tables show the loading sequence for a
30GX350 chiller. Each compressor has 2 loaders and the chill-
ers are configured for staged circuit loading. See Note 2.
COMP LOADER
STAGE
A1
0 0
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 1
CLOSE CONTROL LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 4-COMPRESSOR UNIT)
COMP LOADER
STAGE
A1
0 0
1 1
2 1
3 1
3A 1
4 1
5 1
6 1
7 1
8 1
8A 1
9 1
10 1
LEGEND
0 — Off
1 — On
NOTES:
1. Stages 3A and 8A are not used by the algorithm when increasing stages.
Stages 3 and 8 are not used by the algorithm when decreasing stages.
2. The loading sequence for 30GX281-325 units is the same as those shown
for the 30GX350 above.
APPENDIX B (cont)
STANDARD LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 4-COMPRESSOR UNIT)
LOADER COMP
A1 A2 A2
0 0 0
0 0 0
1 0 0
1 1 0
1 0 1
1 1 1
1 1 1
1 1 1
1 1 1
1 1 1
LOADER COMP
A1 A2 A2
0 0 0
0 0 0
1 0 0
1 1 0
0 0 1
1 0 1
1 1 1
1 1 1
1 1 1
1 1 1
1 1 1
1 1 1
1 1 1
COMP LOADER LOADER
B1 B1
0 0
0 0
0 0
0 0
0 0
0 0
1 1
1 1
1 1
1 1
COMP LOADER LOADER
B1 B1
0 0
0 0
0 0
0 0
0 0
0 0
0 0
1 0
1 1
1 1
1 0
1 1
1 1
85
% TOTAL
COMP
CAPACITY
B2 B2
(50/50 Split)
0 0
0 0
0 0
0 0
0 0
0 0
0 0
1 0
0 1
1 1
% TOTAL
COMP
CAPACITY
B2 B2
(50/50 Split)
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
1 0
0 1
0 1
1 1
0.0
10.0
18.0
25.0
35.0
50.0
68.0
75.0
85.0
100.0
0.0
10.0
18.0
25.0
20.0
35.0
50.0
60.0
68.0
75.0
70.0
85.0
100.0