Monessen Hearth DBX24C User Manual

14

When tightening 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 solution after completing connection. DO NOT USE AN OPEN FLAME.
Check the gas pressure with the appliance burning and the control set to HIGH.
Open control access door at bottom front of unit to find valve and regulator referred to below.

 

Figure 12
The pressure regulator is preset and locked to discourage 
tampering. If the pressure is not as specified, replace the 
regulator  with  the  correct  part  from  the  parts  list  in  this 
manual.
Remove 1/8" NPT plug, located on side of regulator body. 
Install  fitting  and  tubing  to  pressure  gauge. After  taking 
pressure reading, reinstall test plug. Check for gas leaks.

FP2499
manual valve

NPT Test Plug

FP499

FP2510
thermostat control

Test Points

FP510

 

Figure 13
Turn captured screw counter clockwise two or three turns 
and then place tubing to pressure gauge over test point 
(Use test point closest to control knob). After taking pres-
sure reading, be sure and turn captured screw clockwise 
firmly to reseal. Do not over torque. Check for gas leaks.

 

Figure 14
The  valve  regulator  controls  the  burner  pressure  which 
should be checked at the pressure test point.

FP2511
millivolt test point

Test Port 
'A'

FP511

Turn captured screw counter clockwise two or three turns 
and then place tubing to pressure gauge over test point. 
(Use test point “A” closest to gas inlet). After taking pressure 
reading, be sure and turn captured screw clockwise firmly 
to reseal. Do not over torque. Check for gas leaks.