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VENTURI ADJUSTMENT
Air shutter opening has been factory set according to the chart below:
(C)HD35-2
(C)HD40-2
(C)HD46-2
Adjustment is required depending on fuel type, vent configuration, and
altitude.
10.0
ADJUSTMENT
10.1
PILOT BURNER ADJUSTMENT
Adjust the pilot screw to provide properly sized fl ame. Turn in a
clockwise direction to reduce the gas fl ow.
Access the air shutter, located on the bottom of the burner pan. Remove
the four screws attached to the burner pan. Slide the burner pan to the
Check Pressure Readings:
left roughly 1" then lift up.
Inlet pressure can be checked by turning screw (A) counter-
Closing the air shutter will cause a more yellow flame, but can lead to
clockwise 2 or 3 turns and then placing pressure gauge tubing
carboning. Opening the air shutter will cause a more blue flame, but
over the test point. Gauge should read as described on the chart
can cause flame lifting from the burner ports. The flame may not appear
below. Check pressure with main burner operating on "HI".
yellow immediately; allow 15 to 30 minutes for the final flame colour to
be established.
Outlet pressure can be checked the same as above using
screw (B). Gauge should read as described on the chart
below. Check pressure with main burner operating on "HI".
AFTER TAKING PRESSURE READINGS, BE SURE TO
TURN SCREWS CLOCKWISE FIRMLY TO RESEAL. DO
NOT OVERTORQUE.
Leak test with a soap and water solution.
Air shutter adjustment must
Prior to pilot adjustment, ensure that the pilot assembly
be done by a qualified installer!
has not been painted. If overspray or painting of the pilot
assembly has occurred remove the paint from the pilot
assembly, or replace. Fine emery
cloth or a synthetic scrub pad (such as
Scotch-Brite™) can be used to remove
It's important to periodically perform a visual check of the pilot and
burner flames.
the paint from the pilot hood, electrode
and fl ame sensor.
Compare them to the illustrations provided.
*Maximum inlet pressure not to exceed 13".
10.2
FLAME CHARACTERISTICS
It is important to periodically perform a visual check of the pilot
and burner fl ames. Compare them to the illustration provided. If
any fl ames appear abnormal, call a service person.
Wolf Steel Ltd., 24 Napoleon Rd., Barrie, ON L4M 0G8 Canada
10.3
RESTRICTING VERTICAL VENTS
NG
P
1/8" (3.2mm)
3/8" (9.5mm)
1/8" (3.2mm)
7/16" (11.1mm)
1/8" (3.2mm)
3/8" (9.5mm)
VENTURI
AIR SHUTTER
OPENING
ORIFICE
ADJUSTMENTS
Adjust the pilot screw to provide properly sized flame. Turn in a clockwise
direction to reduce the gas flow.
Inlet pressure can be checked by turning screw (A) counter-clockwise
until loosened and then placing pressure gauge tubing over the test point.
Gauge should read 7" (minimum 4.5") water column for natural gas or 13"
(11" minimum) water column for propane. Check the inlet pressure while
the main burner is operating on "HI".
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. Check that main burner is operating.
AFTER TAKING PRESSURE READINGS, TIGHTEN SCREWS FIRMLY
TO SEAL. DO NOT OVER-TORQUE.
(9.5mm - 12.7mm)
FLAME CHARACTERISTICS
Natural Gas
Pressure
(inches)
*7"
Inlet
(MIN. 4.5")
3.5"
Outlet
HD46-2
HD46
• 1(866)820-8686
PRESSURE ADJUSTMENT
LEAK TEST.
B
A
ELECTRODE
MAXIMUM INPUT RATINGS
3/8" - 1/2"
(C)HD35-2
FLAME
(C)HD40-2
SENSOR
(C)HD46-2
FLAME CHARACTERISTICS
Natural Gas
Propane
(millibars)
(inches)
17.4mb
13"
(MIN. 11.2mb)
(MIN. 11")
8.7mb
10"
39.1E
ELECTRODE
HD35/40-2
HD35/40
3/8" - 1/2"
(9.5mm - 12.7mm)
FLAME
SENSOR
• www.napoleon replaces.com
54.1B
41
PILOT SCREW
PILOT
BURNER
25,000 BTU/hr
27,000 BTU/hr
30,000 BTU/hr
FLAME MUST ENVELOP
UPPER 3/8" (9.5mm) TO 1/2"
(12.7mm) OF FLAME SENSOR
Propane
(millibars)
32.4mb
(MIN. 27.4mb)
24.9mb
PILOT
BURNER
FLAME MUST ENVELOP
UPPER 3/8" (9.5mm) TO 1/2"
(12.7mm) OF FLAME SENSOR
W415-1771 / 09.27.17
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