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VENTURI ADJUSTMENT
Air shutters have been factory set open according to the chart below:
These setting are for (maximum) horizontal termination.
BHD4/CBHD4
Adjustment may be required depending on fuel type, vent confi guration and
altitude.
Air shutter adjustment must be done by a qualifi ed in-
Closing the air shutter will cause a more yellow fl ame, but can lead to
carboning. Opening the air shutter will cause a more blue fl ame, but can
cause fl ame lifting from the burner ports. The fl ame may not appear yellow
immediately; allow 15 to 30 minutes for the fi nal fl ame colour to be established.
It's important to periodically perform a visual check of the pilot and burner fl ames.
Compare them to the illustrations provided.
LOG BURNER
Wolf Steel Ltd., 24 Napoleon Rd., Barrie, ON L4M 0G8 Canada
ADJUSTMENTS
P
NG
5/16" (7.9mm)
1/16" (1.6mm)
staller!
VENTURI
AIR SHUTTER
OPENING
ORIFICE
FLAME CHARACTERISTICS
PRESSURE ADJUSTMENT
Adjust the pilot screw to provide properly sized fl ame. Turn in a clockwise
direction to reduce the gas fl ow.
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 that 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.
LEAK TEST
Max. Input Ratings BHD4/CBHD4
GLASS BURNER
• 1(866)820-8686
B
A
PILOT SCREW
P
30,000 BTU/hr
NG
30,000 BTU/hr
FLAME SENSOR
3/8" - 1/2"
(9.5mm - 12.7mm)
ELECTRODE
FLAME MUST ENVELOP
UPPER 3/8" (9.5mm) TO 1/2"
(12.7mm) OF FLAME SENSOR
CRADLE BURNER
• www.napoleon.com
PILOT
BURNER
W415-1319 / A / 01.25.19
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