Heat Wagon VG1000, Installation And Maintenance Manual

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9
3. Burner motor
comes on, but the heater won’t ignite.
• Fuel pressure or volume • Air inlet damper adjustment • Ignition electrode • Electronic igniter • Burner airflow switch • Gas valve
• 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 the proper manifold pressure. Refer to pipe sizing charts in the Heat W
agonEngineering Guide. Heater requires 9-14” W
.C. inlet pressure.
Ensure proper purge procedure (see Fuel Supply Installation).
• Rough setting at 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. Insert volt meter probes into pr and – terminals on the Honeywell Flame Safeguard Control. Set the volt meter on DC volts and run the heater
.
Adjust the air damper until the volt meter reads the highest voltage between 2 and 5 volts.
• 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.
• The burner airflow switch (located above blue Honeywell safeguard control) will
not allow power to the flame safeguard control when it is open. Check the tubes supplying air to the switch for any restrictions.
ONL
Y
AS
A
TEST
, wire
around the air switch. If this test solves the problem, adjust or replace the switch (Midco Burner Only).
• If there is power at the flame safeguard control and no power out to the
solenoid valves, replace the flame safeguard control. Check for continuity between the terminals on the solenoid valve coil. If no continuity
, replace gas
valve.
V
G
10
0
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R
OUBLESHOO
T
ING
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