82
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 configured for equal circuit
loading. See Note 2.
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 30GX205-265 units is the same as those shown
for the 30HX206,271 above.
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 00 0000 0 0.0 0.0
110 0000 0 14.3 13.3
211 0000 0 25.0 23.3
311 1000 0 35.7 33.3
411 0011 0 55.2 46.7
511 0011 1 68.2 56.7
611 1011 1 78.9 66.7
711 0111 1 83.0 80.0
811 1111 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 00 0000 0 0.0 0.0
110 0000 0 14.3 13.3
211 0000 0 25.0 23.3
311 1000 0 35.7 33.3
3A 10 0010 0 31.6 26.7
410 0011 0 44.5 36.7
510 0011 1 57.5 46.7
611 0011 1 68.2 56.7
711 1011 1 78.9 66.7
7A 10 0111 1 65.9 60.0
811 0111 1 83.0 80.0
91 1 1 1 1 1 1 100.0 100.0
LEGEND
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