C E N T R I F U G A L H E A T E R - C S A
Chief Industries, Inc. 800-359-7600 INSTALLATION - 416274
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For fans wired for 460 or 575 volt, three phase power and 230 volt, three phase power, a step down
transformer must be used to convert the 460 or 575 volt system and 230 volt system to 115 volt, single
phase, 60 cycle power for the heater.
When installing a thermostat, humidistat, or thermostat-humidistat control, the control power cord is
wired into terminals #6 and #7 of the heater terminal block. Remove the jumper wire linking terminals
#6 and #7, and connect one lead of the control power cord to terminal #6 and the other lead to
terminal #7. The control leads can be interchanged.
Installation of External Plenum Controls
For the proper installation of a thermostat, humidistat, or thermostat-humidistat control to the bin, the
installation of a dual humidistat-thermostat kit, or the installation of a vaporizer or a modulating valve
to the heater, refer to the installation instruction provided with each accessory.
Operating Instructions
Heater Control:
Information on the operating characteristics of the Centrifugal heater with a flame sensing system is
outlined in the following illustration. The flame sensing relay is reset by de-energizing the heater circuit
after a loss of flame condition.
