York UL R134A User Manual page 126

Air cooled screw liquid chillers r134a 150 - 385 tons (527 - 1354 kwi) 2 and 3 compressor 50 and 60 hz ashrae 90.1 compliant
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Power Wiring
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FIG. 3 – THREE COMPRESSOR WIRING DIAGRAM WITH CIRCUIT BREAKER – SINGLE POINT
VSD
1
FIG. 4 – THREE COMPRESSOR WIRING DIAGRAM WITH TERMINAL BLOCK – SINGLE POINT
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3 COMPRESSOR POWER WIRING CONNECTIONS
VSD CONTROL PANEL
VSD
VSD
STANDARD
2
3
CONTROL
TRANSFORMER
LINE
REACTOR
TERMINAL
BLOCK
FIELD PROVIDED
UNIT POWER
SUPPLY
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UNIT CONTROLS
EVAPORATOR HEATER
FAN
CONTACTORS
See Note 3
JOHNSON CONTROLS

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