Heat Wagon VG500, Installation And Maintenance Manual

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11
3. The
heater
has a loud rumbling sound.
4. Burner motor
comes on, but the heater won’t ignite.
• Air damper setting • Dirt on burner blower wheel • Flue pipe setup or flue pipe
restrictions
• Gas manifold pressure • Restrict heat exchanger • Fuel pressure or volume • Air inlet damper adjustment • Ignition electrode • Electronic igniter
• Rough setting at 3 or 1/2 open. Minor adjustments from the rough settings can
be made to achieve a smooth sounding burner with no soot from the flue pipe.
• Clean the burner blower wheel with a small brush. • Refer to the flue pipe chart in this manual. Check flue for restriction. • Use a low pressure gauge (0-15 inches of water column) with 1/8” NPT
inlet.
Install gauge in the pressure tap port located on the output side of the gas valve. Run the heater
.
Adjust the pressure by turning the pressure adjusting
screw (located on the input side top of the gas valve) counter clockwise until the gauge reads 3.6” W
.C. for propane or 6.1” for natural gas. Refer to pipe
sizing charts in the Heat W
agon Engineering guide, Heater requires 9-14” W
.C.
inlet pressure. Ensure proper purge procedure (see fuel supply installation).
• Remove flue pipe and use a flashlight to inspect the inside of the heat
exchanger
.
The access panel is located on the flue pipe end of the heat
exchanger
. Clean the inside of the heat exchanger
.
• Use a low pressure gauge (0-15 inches of water column) with 1/8” NPT
inlet.
Install gauge in the pressure tap port located on the output side of the gas valve. Run the heater
.
Adjust the pressure by turning the pressure adjusting
screw (located on the input side top of the gas valve) counter clockwise until the gauge reads 3.6” W
.C. for propane or 6.1” for natural gas. Refer to pipe
sizing charts in the Heat W
agon Engineering Guide. Heater requires 9-14”
W
.C. inlet pressure.
• Rough setting at 3 or 1/2 open. Minor adjustments from the rough settings can
be made to achieve a smooth sounding burner with no soot from the flue pipe.
• Clean with fine sandpaper
. Make sure it is free from buildup or cracks.
• T
urn of
f the gas valve, turn on the burner
. Use insulated pliers to hold the
ignition wire and short it to ground. Pull the wire away from ground slowly
.
A
rainbow colored arc should travel between the wire and the ground at a distance of 3/8 of an inch for a duration of 4-5 seconds.
V
G
5
00 TR
OUBLESHOO
TING
Symptom
P
ossible Causes
P
ossible Solutions