Carrier ComfortLink 6 Series Controls, Start-Up, Operation, Service, And Troubleshooting page 86

The following tables show the loading sequence for 30HX206
(57/43 split) and 30HX271 (67/33 split) chillers.All compressors
STANDARD LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 3-COMPRESSOR UNIT)
COMP LOADER
STAGE
A1 A1
0 0 0
1 1 0
2 1 1
3 1 1
4 1 1
5 1 1
6 1 1
7 1 1
8 1 1
CLOSE CONTROL LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 3-COMPRESSOR UNIT)
COMP LOADER
STAGE
A1 A1
0 0 0
1 1 0
2 1 1
3 1 1
3A 1 0
4 1 0
5 1 0
6 1 1
7 1 1
7A 1 0
8 1 1
9 1 1
LEGEND
0 — Off
1 — On
NOTES:
1. Stages 3A and 7A are not used by the algorithm when increasing stages.
Stages 3 and 7 are not used when decreasing stages.
2. The loading sequence for 30GXN,R204-264 units is the same as those shown
for the 30HX206,271 above.
APPENDIX B (cont)
LOADER COMP COMP
A2 A2 B1
0 0 0
0 0 0
0 0 0
1 0 0
0 0 1
0 0 1
1 0 1
0 1 1
1 1 1
LOADER COMP COMP
A2 A2 B1
0 0 0
0 0 0
0 0 0
1 0 0
0 0 1
0 0 1
0 0 1
0 0 1
1 0 1
0 1 1
0 1 1
1 1 1
86
have two loaders and the chillers are configured for equal circuit
loading. See Note 2.
LOADER LOADER
B1 B2
(57/43 Split)
0 0
0 0
0 0
0 0
1 0
1 1
1 1
1 1
1 1
LOADER LOADER
B1 B2
0 0
0 0
0 0
0 0
0 0
1 0
1 1
1 1
1 1
1 1
1 1
1 1
% TOTAL % TOTAL
CAPACITY CAPACITY
(67/33 Split)
0.0 0.0
14.3 13.3
25.0 23.3
35.7 33.3
55.2 46.7
68.2 56.7
78.9 66.7
83.0 80.0
100.0 100.0
% TOTAL % TOTAL
CAPACITY CAPACITY
(57/43 Split) (67/33 Split)
0.0 0.0
14.3 13.3
25.0 23.3
35.7 33.3
31.6 26.7
44.5 36.7
57.5 46.7
68.2 56.7
78.9 66.7
65.9 60.0
83.0 80.0
100.0 100.0