CT1
75VA
CONNECT FOR
SYSTEM VOLTAGE
24 VAC
BLU
YEL
REMOVED FROM
POWER TERMINAL
INTERCHANGE
RED AND ORN
TO CHANGE VOLTAGE
PRIMARY CONNECTIONS
NOT USED MUST BE
ISOLATED AND CAPPED
ELECTRICAL SCHEMATIC
TYPICAL CONFIGURATION
NOTE: IN SOME CASES PRESSURE SCREW TERMINAL BLOCKS
ARE USED IN PLACE OF FASTON TERMINATIONS
Electrical Requirements
Connect the chiller to a properly fused disconnect box in compliance with the National Electric Code
(NFPA-70) as well as state and local codes for American usage, or national and local codes for
European usage. Maximum fuse sizes in the disconnect box must not exceed the maximum ratings
specified on the serial tag of the chiller (found on the electrical box). The voltage, phase, and
frequency of the power source must also match the requirements specified on the serial tag.
Note: Affinity™ models that can operate at either 200-220 Volts 50 Hertz or 208-230 Volts 60 Hertz
have been set at the factory for 200-220 volt operation. If the operating voltage will be greater than
220 volts, a qualified electrician should remove the red wire from the contactor and replace it with
the orange wire taken from the dummy fuse block. Attach the red wire to the dummy fuse block as
shown in the diagram above. See the unit’s serial tag for the correct voltage range.
Warning
: To reduce the risk of electric shock, do NOT remove cover from the
electrical box. It contains exposed high voltage wires. Refer servicing to qualified
personnel. Disconnect power to the chiller before performing any service.
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