York YCAQ10 - LWT CONTROL LOADING;UNLOADING (DUAL CIRCUIT UNITS); LOADING;UNLOADING STAGES BY COOLING RANGE

YORK INTERNATIONAL 63
FORM 150.40-NM25
DUAL CIRCUIT UNITS
OPTIONAL LEAVING WATER TEMPERATURE (LWT) CONTROL
LOADING/UNLOADING
Loading/Unloading of cylinders is accomplished in re-
sponse to leaving chilled water temperature as sensed
by the Micro Logic Board. Tables are provided for each
of the Cooling Range Codes 0-7.
STAGE ON OFF
Lag Compr. Loader Stage 4* Setpoint plus 1.0°F (.55°C) Setpoint plus 0.4°F (.22°C)
Lag Compr. Loader Stage 3 Setpoint plus 0.8°F (.44°C) Setpoint plus 0.2°F (.11°C)
Lag Compr. Loader Stage 2 Setpoint plus 0.6°F (.33°C) Setpoint
Lag Compressor (Stage 1) Setpoint plus 0.4°F (.22°C) Setpoint minus 0.2°F (.11°C)
Lead Compr. Loader Stage 4* Setpoint plus 0.2°F (.11°C) Setpoint minus 0.4°F (.22°C)
Lead Compr. Loader Stage 3 Setpoint Setpoint minus 0.6°F (.33°C)
Lead Compr. Loader Stage 2 Setpoint minus 0.2°F (.22°C) Setpoint minus 0.8°F (.44°C)
Lead Compressor (Stage 1) Setpoint minus 0.6°F (.33°C) Setpoint minus 1.0°F (.55°C)
COOLING RANGE
SWITCH = 0
COOLING RANGE
OF ± 1.0°F (.55°C)
STAGE ON OFF
Lag Compr. Loader Stage 4* Setpoint plus 1.2°F (.66°C) Setpoint plus 0.9°F (.49°C)
Lag Compr. Loader Stage 3 Setpoint plus 1.0°F (.55°C) Setpoint plus 0.7°F (.38°C)
Lag Compr. Loader Stage 2 Setpoint plus 0.8°F (.44°C) Setpoint plus 0.5°F (.27°C)
Lag Compressor (Stage 1) Setpoint plus 0.5°F (.27°C) Setpoint plus 0.2°F (.11°C)
Lead Compr. Loader Stage 4* Setpoint plus 0.3°F (.16°C) Setpoint
Lead Compr. Loader Stage 3 Setpoint Setpoint minus 0.4°F (.22°C)
Lead Compr. Loader Stage 2 Setpoint minus 0.3°F (.16°C) Setpoint minus 0.8°F (.44°C)
Lead Compressor (Stage 1) Setpoint minus 0.6°F (.33°C) Setpoint minus 1.2°F (.66°C)
COOLING RANGE
SWITCH = 1
COOLING RANGE
OF ± 1.2°F (.66°C)
STAGE ON OFF
Lag Compr. Loader Stage 4* Setpoint plus 1.4°F (.77°C) Setpoint plus 1.1°F (.61°C)
Lag Compr. Loader Stage 3 Setpoint plus 1.1°F (.61°C) Setpoint plus 0.8°F (.44°C)
Lag Compr. Loader Stage 2 Setpoint plus 0.9°F (.49°C) Setpoint plus 0.5°F (.27°C)
Lag Compressor (Stage 1) Setpoint plus 0.6°F (.33°C) Setpoint plus 0.2°F (.11°C)
Lead Compr. Loader Stage 4* Setpoint plus 0.2°F (.11°C) Setpoint minus 0.2°F (.11°C)
Lead Compr. Loader Stage 3 Setpoint minus 0.1°F (.05°C) Setpoint minus 0.4°F (.22°C)
Lead Compr. Loader Stage 2 Setpoint minus 0.4°F (.22°C) Setpoint minus 1.0°F (.55°C)
Lead Compressor (Stage 1) Setpoint minus 0.7°F (.38°C) Setpoint minus 1.4°F (.77°C)
COOLING RANGE
SWITCH = 2
COOLING RANGE
OF ± 1.4°F (.77°C)
STAGE ON OFF
Lag Compr. Loader Stage 4* Setpoint plus 1.5°F (.83°C) Setpoint plus 1.2°F (.66°C)
Lag Compr. Loader Stage 3 Setpoint plus 1.2°F (.66°C) Setpoint plus 0.9°F (.49°C)
Lag Compr. Loader Stage 2 Setpoint plus 0.9°F (.49°C) Setpoint plus 0.5°F (.27°C)
Lag Compressor (Stage 1) Setpoint plus 0.6°F (.33°C) Setpoint plus 0.1°F (.05°C)
Lead Compr. Loader Stage 4* Setpoint plus 0.2°F (.11°C) Setpoint minus 0.3°F (.16°C)
Lead Compr. Loader Stage 3 Setpoint minus 0.2°F (.11°C) Setpoint minus 0.7°F (.38°C)
Lead Compr. Loader Stage 2 Setpoint minus 0.5°F (.27°C) Setpoint minus 1.1°F (.61°C)
Lead Compressor (Stage 1) Setpoint minus 1.0°F (.55°C) Setpoint minus 1.5°F (.83°C)
COOLING RANGE
SWITCH = 3
COOLING RANGE
OF ± 1.5°F (.83°C)
STAGE ON OFF
Lag Compr. Loader Stage 4* Setpoint plus 1.6°F (.88°C) Setpoint plus 1.2°F (.66°C)
Lag Compr. Loader Stage 3 Setpoint plus 1.3°F (.72°C) Setpoint plus 0.9°F (.49°C)
Lag Compr. Loader Stage 2 Setpoint plus 1.0°F (.55°C) Setpoint plus 0.5°F (.27°C)
Lag Compressor (Stage 1) Setpoint plus 0.7°F (.38°C) Setpoint plus 0.1°F (.05°C)
Lead Compr. Loader Stage 4* Setpoint plus 0.2°F (.11°C) Setpoint minus 0.3°F (.16°C)
Lead Compr. Loader Stage 3 Setpoint minus 0.2°F (.11°C) Setpoint minus 0.7°F (.38°C)
Lead Compr. Loader Stage 2 Setpoint minus 0.5°F (.27°C) Setpoint minus 1.1°F (.61°C)
Lead Compressor (Stage 1) Setpoint minus 1.0°F (.55°C) Setpoint minus 1.6°F (.88°C)
COOLING RANGE
SWITCH = 4
COOLING RANGE
OF ± 1.6°F (.88°C)