Monessen Hearth MHSC EYF24 - Manual (Page 19)

65D1009 19
ELECTRICAL WIRING (MILLIVOLT)
The millivolt valve is a self-powered combination gas control THAT DOES NOT
REQUIRE 110 VAC TO OPERATE.
CONNECTING OPTIONAL WALL SWITCH OR THERMOSTAT
1. Use 18 AWG, two-wire cable, 20 feet maximum length.
2. At one end of the cable, connect both wires to the wall switch or thermostat. At the other end, connect one wire to TP/TH
and one wire to TH. The color of the wires does not matter. Or you can hook the wall switch or thermostat to wires on
the unit.
Figure 16 - Wiring Diagram
Optional Wall
Switch or Remote
Receiver
Switch
On/Off
Switch
On/Off
Switch
Wall
Switch
ODS
Pilot
Millivolt
Valve
TH = 3
TP = 1
TP/TH = 2
ODS
Pilot
Spade
Terminal
CAUTION
Label all wires prior to
disconnection when
servicing controls.
Wiring errors can
cause improper and
dangerous operation.
Verify proper operation
after servicing.