Carrier Ecologic Series 3 - Page 85

85
APPENDIX B (cont)
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.
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.
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
110 0000 00 10.0
211 0000 00 18.0
311 1000 00 25.0
411 0100 00 35.0
511 1100 00 50.0
611 1111 00 68.0
711 1111 10 75.0
811 1111 01 85.0
911 1111 11 100.0
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
110 0000 00 10.0
211 0000 00 18.0
311 1000 00 25.0
3A 10 0100 00 20.0
411 0100 00 35.0
511 1100 00 50.0
611 1110 00 60.0
711 1111 00 68.0
811 1111 10 75.0
8A 11 1110 01 70.0
911 1111 01 85.0
10 11 1111 11 100.0
LEGEND
0 —Off
1—On