APPENDIX B (cont)
The following tables show the loading sequence for 30HX206
(57/43 split) and 30HX271 (67/33 split) chillers. All
compressors have two loaders and the chillers are config-
ured for equal circuit loading. See Note 2.
STANDARD LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 3-COMPRESSOR UNIT)
STAGE
COMP
A1
LOADER
A1
LOADER
A2
COMP
A2
COMP
B1
LOADER
B1
LOADER
B2
% TOTAL
CAPACITY
(57/43 Split)
% TOTAL
CAPACITY
(67/33 Split)
0 0 0 0 0 0 0 0 0.0 0.0
1 1 0 0 0 0 0 0 14.3 13.3
2 1 1 0 0 0 0 0 25.0 23.3
3 1 1 1 0 0 0 0 35.7 33.3
4 1 1 0 0 1 1 0 55.2 46.7
5 1 1 0 0 1 1 1 68.2 56.7
6 1 1 1 0 1 1 1 78.9 66.7
7 1 1 0 1 1 1 1 83.0 80.0
8 1 1 1 1 1 1 1 100.0 100.0
CLOSE CONTROL LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 3-COMPRESSOR UNIT)
STAGE
COMP
A1
LOADER
A1
LOADER
A2
COMP
A2
COMP
B1
LOADER
B1
LOADER
B2
% TOTAL
CAPACITY
(57/43 Split)
% TOTAL
CAPACITY
(67/33 Split)
0 0 0 0 0 0 0 0 0.0 0.0
1 1 0 0 0 0 0 0 14.3 13.3
2 1 1 0 0 0 0 0 25.0 23.3
3 1 1 1 0 0 0 0 35.7 33.3
3A 1 0 0 0 1 0 0 31.6 26.7
4 1 0 0 0 1 1 0 44.5 36.7
5 1 0 0 0 1 1 1 57.5 46.7
6 1 1 0 0 1 1 1 68.2 56.7
7 1 1 1 0 1 1 1 78.9 66.7
7A 1 0 0 1 1 1 1 65.9 60.0
8 1 1 0 1 1 1 1 83.0 80.0
9 1 1 1 1 1 1 1 100.0 100.0
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 by the algorithm when de-
creasing stages.
2. The loading sequence for 30GX205-265 units is the same as those
shown for the 30HZ206,271 above.
78
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