Carrier ComfortLink 6 Series - Standard Loading Sequence (Circuit A Lead Circuit, 4-Compressor Unit); Close Control Loading Sequence (Circuit A Lead Circuit, 4-Compressor Unit)

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APPENDIX B (cont)
The following tables show the loading sequence for a 30GXN,R350 chiller.
Each compressor has 2 loaders and the chillers are configured for staged circuit
loading.SeeNote2.
LEGEND
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 30GXN,R281-325 units is the same as those
shown for the 30GXN,R350 above.
STANDARD LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 4-COMPRESSOR UNIT)
STAGE
COMP
A1
LOADER
A1
LOADER
A2
COMP
A2
COMP
B1
LOADER
B1
LOADER
B2
COMP
B2
% TOTAL
CAPACITY
(50/50 Split)
0 00 0000 00 0.0
1 10 0000 00 10.0
2 11 0000 00 18.0
3 11 1000 00 25.0
4 11 0100 00 35.0
5 11 1100 00 50.0
6 11 1111 00 68.0
7 11 1111 10 75.0
8 11 1111 01 85.0
9 1 1 1 1 1 1 1 1 100.0
CLOSE CONTROL LOADING SEQUENCE (CIRCUIT A LEAD CIRCUIT, 4-COMPRESSOR UNIT)
STAGE
COMP
A1
LOADER
A1
LOADER
A2
COMP
A2
COMP
B1
LOADER
B1
LOADER
B2
COMP
B2
% TOTAL
CAPACITY
(50/50 Split)
0 00 0000 00 0.0
1 10 0000 00 10.0
2 11 0000 00 18.0
3 11 1000 00 25.0
3A 10 0100 00 20.0
4 11 0100 00 35.0
5 11 1100 00 50.0
6 11 1110 00 60.0
7 11 1111 00 68.0
8 11 1111 10 75.0
8A 11 1110 01 70.0
9 11 1111 01 85.0
10 1 1 1 1 1 1 1 1 100.0
0 — Off
1 —On