Monessen Hearth CFX24 User Manual

Page of 36
18
CFX Vent Free Fireplace System
20301726
ELECTRICAL WIRING (MILLI-VOLT)
The milli-volt valve is a self-powered combination gas control 
that DOES NOT REQUIRE 110V AC 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.
FP2112
wiring diagram
12/08
Optional Wall
Switch, Thermostat,
or Remote Receiver
Switch
On/Off
Switch
On/Off
Switch
Wall
Switch
ODS Pilot
Millivolt Valve
Red
TP/TH = 2
Figure 16 - 
Wiring Diagram
Red
ODS Pilot
Spade Terminal
TH = 3
TP = 1
FP2112
Label all wires prior to disconnection when 
servicing controls. Wiring errors can cause 
improper and dangerous operation. Verify 
proper operation after servicing.
CAUTION