Figure 28: Potentiometer Control Wiring Diagram - Roberts Gorden VANTAGE CTH3-80 Installation, Operation & Service Manual

CTH3-S I , O
ERIES NSTALLATION PERATION AND
10.4.9 Potentiometer Control Device
Potentiometer (10K Ohm"Linear Taper") device offers
manual control over heater(s) firing rate. This type of
potentiometer can be found at Radio Shack
Potentiometer dial position directly dictates heater(s)
firing rate. Dial positions range between "Min" and
"Max". Minimum and maximum heater firing rates
(inputs) are marked on the heater's rating plate. ON/
OFF switch or thermostat is used to disable heater
operation or reset heater from lockout.

FIGURE 28: Potentiometer Control Wiring Diagram

* Separate on/off switch is optional for "satellite" heaters (install at user level).
On/Off switch is used to disable heater operation or reset a heater that is in "lockout" mode.
If on/off switch is not desired, leave jumper wire between R and W terminals in place.
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ERVICE ANUAL
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