Napoleon GDS20N Installation And Operating Instructions Manual page 38

38
SYMPTOM
Pilot will not light.
EN
PILOT
BURNER
THERMOCOUPLE
Flames are consistently
too large or too small.
Carboning occurs.
Flames are very aggressive.
Carbon is being
deposited on glass, logs
or combustion chamber
surfaces.
W415-0496 / H / 07.16.13
PROBLEM
No spark at pilot burner.
THERMOPILE
Out of propane gas.
Spark gap is incorrect.
No gas at the pilot burner.
Unit is over-fi red or underfi red.
B A
Door is ajar.
Venting action is too
great.
Air shutter has become
blocked.
Flame is impinging on the logs
or combustion chamber.
TEST SOLUTION
- Check if pilot can be lit by a match.
- Check that the wire is connected to the push button igniter.
- Check if the push button igniter needs tightening.
- Replace the wire if the wire insulation is broken or frayed.
- Replace the electrode if the ceramic insulator is cracked
or broken.
- Replace the push button ignitor
- Fill the tank.
- Spark gap should be 0.150" (3.8mm) to 0.175" (4.5mm)
from the electrode tip and the pilot burner. To ensure
proper electrode location, tighten securing nut (fi nger
tight plus 1/4 turn).
- Check that the manual valve is turned on.
- Check the pilot orifi ce for blockage.
- Replace the valve.
- Call the gas distributor.
- 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 as
described on the chart below.
operating on 'HI'.
- Outlet pressure can be checked the same as above
using screw (B). Gauge should read as described on the
chart below. Check that main burner is operating on 'HI'.
- AFTER TAKING PRESSURE READINGS, BE SURE TO
TURN SCREWS CLOCKWISE FIRMLY TO RESEAL.
DO NOT OVER TORQUE.
- Leak test with a soap and water solution.
-
Natural Gas Natural Gas
Pressure
(inches) (millibars)
7" 17.4mb
Inlet
(MIN. 4.5") (MIN. 11.2mb)
3.5" 8.7mb
Outlet
- Ensure the mechanical means of securing the door is
providing a tight seal.
- Check to ensure venting is properly sealed.
- If restriction is required see "RESTRICTING VERTICAL
VENT" section.
- Ensure air shutter opening is free of lint or other
obstructions.
- Check that the logs are correctly positioned.
- Open air shutter to increase the primary air.
- Check the input rate: check the manifold pressure and
orifi ce size as specifi ed by the rating plate values.
- Check that the door gasketing is not broken or missing
and that the seal is tight.
- Check that both vent liners are free of holes and well
sealed at all joints.
- Check that minimum rise per foot (meter) has been
adhered to for any horizontal venting.
Check with main burner is
Propane Propane
(inches) (millibars)
32.4mb
13"
(MIN. 27.4mb)
(MIN. 11")
10" 24.9mb
42.3_2E