Electrical wiring
Follow local electrical codes when making electrical connections. Units are completely factory wired
for normal supply voltages (e.g., 208-230, 460, 575V/3Ph/60Hz). Confirm unit specifications by
checking unit data plate. All electrical components are accessible through an independent electrical
panel located on the right-hand (left-hand for RH units) end of the evaporator/compressor section.
The electrical control boxes are located behind outer access panels. The compressor section
electrical cover is provided with wiring diagrams on the inside, which must be opened to be read.
WARNING
DISCONNECT AND LOCK OUT POWER WHEN SERVICING UNIT. UNIT MAY START AUTOMATICALLY IF
POWER IS NOT DISCONNECTED. FAILURE TO DO SO MAY RESULT IN PERSONAL INJURY OR DEATH DUE
TO ELECTRICAL SHOCK.
Provide individual power disconnects for each unit. Install a secure ground to the bonding lug
located in the electrical control panel. If canvas flexible joints are used on ductwork, install a ground
wire to the ductwork as well.
WARNING
All wiring must comply with applicable local and national codes (NEC). Type and location of disconnect
switches must comply with all applicable codes.
Unit requires installer to provide a 24-volt thermostat with appropriate heating and cooling stages
as needed. For low voltage wiring, 18-gauge wire may be used for up to 50-foot lengths. Low
voltage runs up to 125 feet require 16-gauge wire.
All models are designed for single zone (or multi zone with VFD) cooling applications, utilizing
space. or return air thermostatic controls. A low voltage terminal block is provided for hook-up of
conventional or programmable thermostats.
C-Series Vertical (CSV) Water-Cooled Self-Contained Units, B Generation, R-410A Installation, Operation, and
Maintenance Manual
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