CHECKING GAS PRESSURE

warning

Connecting directly to an unregulated propane/LPG tank can cause an explosion.

The heater gas inlet connection is a 3/8" NPT at the valve. On all 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.

Test all gas joints from the gas meter to the heater valve for leaks using a gas analyzer or soap and water solu- tion after completing connection. DO NOT USE AN OPEN FLAME.

Check the gas pressure with the appliance burning and the control set to HIGH.

Test Port “OUT”

Millivolt Valve Control (Figure 15)

The valve regulator controls the burner pressure which should be checked at the pressure test point.

Turn captured screw counter clockwise two or three

 

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

FP2008

turn captured screw clockwise firmly to re-seal. Do

 

not over torque. Check for gas leaks.

Figure 15 - Pressure Test Point Location

 

 

Millivolt Control

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Monessen Hearth MJ27NR, MJ27PR operating instructions Checking GAS Pressure, Millivolt Valve Control Figure