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TROUBLE
SHOOTING
CHART
- PILOT AND VALVE - CONTINUED
_YMPTOM
?ilot won't light,
3r stay lit
'STANDING
PILOT)
?ilot won't
light,
3r stay lit
'I.I.D.
PILOT)
POSSIBLE
CAUSES
1. Air in line.
2. Defective thennocouple.
3. Pilot flame too low.
4. Manual reset switch not engaged.
1. Sparker
won't
work.
2.
Sparker
won't
light pilot.
3. Manual
reset switch
not engaged.
CORRECTIVE
ACTION
1. Bleed line.
2. Replace thermocouple.
3. Adjust pilot flame.
4. Push on button.
1. Check wire connections.
2.a.
Pilot flame
too lean.
2.b.
Turn valve to "on" position.
2.c.
Check for pilot restriction.
3. Push on button.
THE FOLLOWING
IS A LIST
OF POSSIBLE
CAUSES
AND CORRECTIVE
ACTIONS
FOR BLOCKED
FLUE SWITCH
PROBLEMS
POSSIBLE CAUSES
1. Blockage in vent pipe
CORRECTIVE
ACTION
1. A) Check vent pipe tbr blockage, such as bird nest, wasp nest, twigs, leaves, etc.
1. B) Check inside the bottom of the vent pipe to make sure the top of the draft
diverter did not rip the inner liner causing it to block part of the vent opening.
1. C) Check that no insulation tiom the header plate got caught on top of the draft
diverter when the heater was inserted into the wall.
1. D) Check that the vent cap is properly installed, not shoved too far down on the
vent pipe.
2. Burner is overfiring
2. A)
2. B)
Check the manifold pressure.
Check the rate, NOTE:
This appliance was orificed for elevations up to 2,000
feet. When installed at higher elevations refer to orifice chart in "Controls"
section of instructions f\_r proper orifice size.
3. Improper vent system.
A) Vent too short
B) Restriction in vent
system caused by
ofl;ets
C) Incorrect vent pipe
3. Correct vent system.
A) The vent should terminate a lninilnum of 12 feet above the floor. See Figure 1.
Also, the top of the vent must be at least 2 f\_ot above any obstacle within a
10 toot radius, including the roof. See Figure A on Page 4.
B) All type "B" vents shall extend in a generally vertical direction with ofl;ets not
exceeding 45 degrees, except that a vent system having not more than one 60
de_ee ofl;et may be allowed.
Any angle _eater than 45 de_ees
from the vertical is considered horizontal.
The total horizontal run of a vent plus the horizontal vent connector shall be
not greater than 75 percent of the vertical height of the vent.
C) Use listed BW type vent pipe. Do not use transite or any other type of ceramic
pipe for venting.
Do not use single wall pipe. When venting into a masonry
chimney the chimney must be properly lined and sized for this gas furnace.
The use of type B or a flexible chimney liner is recommended.
_. Incorrect header plate
location.
5. Vent pipe not down on the
header plate securely
5. Loose connections on the
4. Consult Figure 6 for correct header plate height.
5. You must use a base plate (obtained from the vent pipe manufacturer) on top of the
header plate, or wall furnace. This wilt lock the vent pipe down and prevent the
draft diverter from shoving it up.
6. Check the connections on both the switch and the gas valve. Tighten if necessary.
vent safe
wirin_ harness
DO NOT BYPASS THE BLOCKED FLUE SWITCH: TO DO
I
n
I
SO COULD
EXPOSE
THE CONSUMER
TO PROPERTY
DAMAGE,
PERSONAL INJURY OR POSSIBLE DEATH.
Page 19
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