Heat Wagon VG500, Руководство по установке и обслуживанию

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12
4. Continued 5. The
heater
blows black smoke out of the vent stack.
• Burner airflow switch • Gas valve • Air in pilot line • Flame safeguard control in lockout • Air damper setting • Dirt on burner blower wheel • Improper flue pipe setup or flue pipe
restrictions
• Gas manifold pressure • Restricted heat exchanger
• The burner airflow switch 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.
• If there is power at the flame safeguard control and no power out to the
solenoid valve, replace the flame safeguard control. Check for continuity between the terminals on the solenoid valve coil.
• Bleed all air from line wait 5 minutes, restart the heater
.
• T
urn of
f the thermostat wait 50 sec. to reset the control.
• 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) 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.
• 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
. Remove and clean the heat exchanger
.
V
G
5
00 TR
OUBLESHOO
TING
Symptom
P
ossible Causes
P
ossible Solutions