Checking Gas Pressure; Manual Control; Milli-Volt/Thermostat Control - Monessen Hearth HVFL24 Installation And Operating Instructions Manual

Natural gas or propane/lpg control type: manual and milli-volt unvented gas log heater or vented decorative appliance
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C o n n e c t i n g d i r e c t l y t o a n
unregulated propane/LPG tank
can cause an explosion.
Test all gas joints from the gas meter to the heater valve for leaks using a gas analyzer or soap and water solution after
completing connection. DO NOT USE AN OPEN FLAME.
Check the gas pressure with the appliance burning and the control set to HIGH.
MANUAL CONTROL (Figure 16)
The pressure regulator is preset and locked to dis-
courage tampering. If the pressure is not as specified,
replace the regulator with the correct part from the parts
list in this manual.
1
Remove
/
" NPT plug, located on side of regulator
8
body. Install fitting and tubing to pressure gauge. After
taking pressure reading, reinstall test plug. Check for
gas leaks.
MILLI-VOLT CONTROL (Figure 17)
The valve regulator controls the burner pressure which
should be checked at the pressure test point.
Turn captured screw counter clockwise two or thre turns
and then place tubing to pressure gauge over test point
(Use test point "OUT" closest to control knob). After
taking pressure reading, be sure and turn captured screw
clockwise firmly to re-seal. Do not over torque. Check
for gas leaks.
59D1015

CHECKING GAS PRESSURE

The heater gas inlet connection is a
control type units, the inlet connection is on the right side of unit.
To connect from the opposite side, route the pipe around the back
portion of the unit.
When tightening up the joint to the valve, hold the valve securely
to prevent movement.
NPT Test Plug
Figure 16 - Pressure Test Point Location

Manual Control

Figure 17 - Pressure Test Point Location
Milli-Volt Control
3
/
" NPT at the valve. On all
8
Test Port "OUT"
21

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