Monessen Hearth CFX24 - Manual (Page 17)

17
CFX Vent Free Fireplace System
20301726
CHECK GAS PRESSURE
1. Check gas type. The gas supply must be the same as
stated on the appliance’s rating decal. If the gas supply
is different from the fireplace, STOP! Do not install the
appliance. Contact your dealer immediately.
2. To ease installation, a 24" (610 mm) flex line with
manual shut-off valve has been provided with on this
appliance. Install and attach 1/2" gas line onto shut-off
valve.
3. After completing gas line connection, purge air from
gas line and test all gas joints from the gas meter to
the fireplace for leaks. Use a solution of 50/50 water
and soap solution or a gas sniffer.
4. To adjust flame height, turn HI/LO knob to HI to get
maximum pressure to burner. Turn HI/LO knob to LO
to get minimum pressure.
5. To check gas pressures at valve, turn captured screw
counter clockwise 2 or 3 turns and then place tubing
to pressure gauge over test point. Turn unit to high.
Figure 15 After taking pressure reading, be sure and
turn captured screw clockwise firmly to reseal. Do not
over torque. Check test points for gas leaks.
FP1979
Millivolt gas valve
FP1979
Figure 15 -
Gas Pressure Check at Gas Valve
Pressure
Test “IN”
Pressure
Test “OUT”
HI/LO Knob
Pilot Adjustment Screw
W
ARNING
Do not use open flame to
check for gas leaks.