17
WS-415-63 / 11.24.98
White / grey film
forms.
Sulphur from fuel is being de-
posited on glass, logs or com-
bustion chamber surfaces.
- clean the glass with a recommended gas glass cleaner or a
non-abrasive ammonia or vinegar based glass cleaner. DO
NOT CLEAN GLASS WHEN HOT.
If deposits are not cleaned off regularly, the glass may be-
come permanently marked.
P
I
A
B
PILO
T
N
O
L
O
T
H I
LO
FF
O
Flames are consis-
tently too large or too
small. Carboning oc-
curs.
- check pressure readings:
Inlet pressure can be checked by turning screw (A) counter-
clockwise 2 or 3 turns and then placing pressure gauge tubing
over the test point. Gauge should read 7" (minimum 4.5") wa-
ter column for natural gas or 13" (11" minimum) water column
for propane.
Outlet pressure can be checked the same as above using screw
(B). Gauge should read 3.5" water column for natural gas or
10" water column for propane.
AFTER TAKING PRESSURE READINGS, BE SURE TO TURN SCREWS
CLOCKWISE FIRMLY TO RESEAL. DO NOT OVERTORQUE.
Leak test with a soap and water solution.
Unit is over-fired or under-fired.
Main burner flame is
a blue, lazy, transpar-
ent flame.
Blockage in vent.
- remove blockage. In really cold conditions, ice buildup may
occur on the terminal and should be removed as required.
- refer to
Figure 16
to ensure correct location of storm
collars.
Incorrect installation.
Main burner goes out;
pilot goes out.
REFER TO "MAIN BURNER GOES OUT; PILOT STAYS ON"
Thermocouple shorting or
faulty.
- check joint seals and installation.
Vent re-circulating
- loosen and tighten thermocouple
- clean thermocouple and valve connection.
- replace thermocouple.
- replace valve.
PROBLEM
PROBLEM
PROBLEM
PROBLEM
PROBLEM
TEST SOLUTION
TEST SOLUTION
TEST SOLUTION
TEST SOLUTION
TEST SOLUTION
SYMPTOM
SYMPTOM
SYMPTOM
SYMPTOM
SYMPTOM
Carbon is being de-
posited on glass,
logs or combustion
chamber surfaces.
Flame is impinging on
the logs or combustion
chamber.
- check that the logs are correctly positioned.
- open air shutter to increase the primary air.
- check the input rate: check the manifold pressure and orifice
size as specified by the rating plate values.
- check that the door gasketing is not broken or missing and
that the seal is tight.
- check that both 4" and 7" vent liners are free of holes and well
sealed at all joints.
- check that minimum rise per foor has been adhered to for any
horizontal venting.
Air shutter has become
blocked
- ensure air shutter opening is free of lint or other obstructions.
Exhaust fumes
smelled in room,
headaches.
- check all seals.
- check for chimney blockage
- check that chimney is installed to building code.
- room is in negative pressure; increase fresh air supply.
Fireplace is spilling.
