Monessen Hearth Direct Vent Gas Fireplace MDV500 - Manual (Page 39)

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PILO
T
OF
F
PI
LO
T
ON
Continued on next page
OPERATING INSTRUCTIONS - MILLIVOLT
APPROVED LEAK TESTING METHOD
You may check for gas leaks with the following methods only:
• Soap and water solution
• An approved leak testing spray
• Electronic sniffer
NOTE: Remove any excessive pipe
compound from the connections.
Excessive pipe compound can set off
electronic sniffers.
1. Depress and turn knob counterclockwise
to pilot position.
2. Depress fully and hold pilot gas knob. Depress piezo
ignitor as many times as needed to ignite the pilot.
Keep knob fully depressed for a few seconds.
Release and check that pilot continues to burn.
If the pilot does not stay lit, repeat steps 1 and 2.
Figure 54 - Pilot Position
Check for gas leaks in each of the following locations:
• Pipe from the gas supply line connection to the gas valve
• Burner connections
• Field made joints / gas shutoff valve
• Pilot • Factory made joints
• Each joint or connection • All joints on valve and control body
LIGHTING PILOT FOR THE FIRST TIME - MILLIVOLT
WARNING
If using a soap and water
solution to test for leaks,
DO NOT spray solution
onto control body.
DANGER
Never check for gas leak with open flame!
LIGHTING PILOT - MILLIVOLT