Figure 27: Potentiometer Control Wiring Diagram - HeatRite VM-80 Installation, Operation & Service Manual

VM-S I , O
ERIES NSTALLATION PERATION AND
10.5.9 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 27: Potentiometer Control Wiring Diagram

ON/OFF SWITCH
CENTRAL HEATER CONTROL
or THERMOSTAT
THERMOSTAT
T24
T25
T26
T27
T13
T14
POTENTIOMETER
(10K Ohm)
T15
T16
T17
T18
T19
T28
T29
T30
T31
MODULATION CONTROL WIRING
TO SATELLITE HEATERS
* 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.
50 of 71
S M
ERVICE ANUAL
® .
R
W
J10 JUMPER POSITION
SHOWS "CENTRAL"
DESIGNATION AND
"POTENTIOMETER"
CONTROL METHOD.
A B
J10
SATELLITE HEATER CONTROL
*OPTIONAL
SWITCH
THERMOSTAT
T24
R
T25
W
T26
T27
T13
T14
T15
T16
T17
T18
T19
T28
T29
T30
T31
J10
J10 JUMPER POSITION
SHOWS "SATELLITE" DESIGNATION.
A B
MODULATION CONTROL WIRING
TO ADDITIONAL SATELLITE
HEATER CONTROL TERMINALS
T28 AND T29.