14
AVFLST Vent Free Fireplace
Monessen • AVFLST42 Installation Instructions • 4118-900 Rev. B • 05/2020
FIREPLACE INSTALLATION
CHECK GAS PRESSURE
Figure 11
Check the gas pressure with the appliance burning and
the control set to
HIGH
.
The valve regulator controls the burner pressure which
should be checked at the pressure test point.
Open control access door at bottom front of unit to find
valve and regulator.
Turn captured screw counterclockwise two or three turns
and then place tubing to pressure gauge over test point.
Use test point “A” closest to gas inlet. If the pressure is not
within the range listed for your gas type turn the valve reg-
ulator until it is within range. After taking pressure reading,
be sure and turn captured screw clockwise firmly to reseal.
Do not over torque. Check for gas leaks.
GAS PRESSURES
NATURAL
PROPANE (LP)
Inlet Minimum
5.0" w.c.
11.0" w.c.
Inlet Maximum
10.5" w.c.
13.0" w.c.
Regulator Pressure
Setting
3.5" w.c.
10" w.c.
Pilot Regulator
3.5" w.c.
—
Figure 11.
Pressure Test Point Location
TEST PORT 'A'
