Carrier WeatherExpert 48N2 - Page 209

209
APPENDIX C — UNIT STAGING TABLES
UNIT SIZE P, Q STAGING SEQUENCE (90 AND 105 TON NOMINAL CAPACITY)
*Minimum load valve (MLV). MLV is enabled on Circuit A when
decreasing from stage 1 to stage 0 to provide an increased stage of
capacity.
UNIT SIZE P, Q STAGING SEQUENCE WITH DIGITAL COMPRESSOR (90 AND 105 TON NOMINAL CAPACITY)
UNIT SIZE R, S, T STAGING SEQUENCE (120-150 TON NOMINAL CAPACITY)
*Minimum load valve (MLV). MLV is enabled on Circuit A when
decreasing from stage 1 to stage 0 to provide an increased stage of
capacity.
STAGE
SEQUENCE
01*123456
COMP Compressor Status
A1 OFFONONONONONONON
A2 OFF OFF OFF OFF ON ON ON ON
A3 OFF OFF OFF OFF OFF OFF ON ON
B1 OFF OFF ON ON ON ON ON ON
B2 OFF OFF OFF OFF OFF ON ON ON
B3 OFF OFF OFF OFF OFF OFF OFF ON
UNIT Total Capacity
090 0% 11% 15% 33% 49% 67% 82% 100%
105 0% 13% 17% 33% 50% 67% 83% 100%
STAGE
SEQUENCE
0123456
COMP Compressor Status
A1 OFFONONONONONON
A2 OFF OFF OFF ON ON ON ON
A3 OFF OFF OFF OFF OFF ON ON
B1 OFF OFF ON ON ON ON ON
B2 OFF OFF OFF OFF ON ON ON
B3 OFF OFF OFF OFF OFF OFF ON
UNIT Total Capacity
090 0% 8% to 15% 26% to 33% 41% to 49% 59% to 67% 74% to 82% 92% to 100%
105 0% 8% to 17% 25% to 33% 42% to 50% 58% to 67% 75% to 83% 92% to 100%
STAGE
SEQUENCE
01*12345678
COMP Compressor Status
A1 OFFONONONONONONONONON
A2 OFF OFF OFF OFF ON ON ON ON ON ON
A3 OFF OFF OFF OFF OFF OFF ON ON ON ON
A4 OFF OFF OFF OFF OFF OFF OFF OFF ON ON
B1 OFFOFFOFFONONONONONONON
B2 OFFOFFOFFOFFOFFONONONONON
B3 OFF OFF OFF OFF OFF OFF OFF ON ON ON
B4 OFF OFF OFF OFF OFF OFF OFF OFF OFF ON
UNIT Total Capacity
120 0% 11% 14% 28% 40% 52% 64% 76% 88% 100%
130 0% 8% 11% 22% 35% 48% 61% 74% 87% 100%
150 0% 9% 13% 25% 38% 50% 63% 75% 88% 100%