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VENTURI ADJUSTMENT
Closed
Open
Adjust the air shutter to get desired flame using
adjustment rods.
Adjustment is required depending on fuel type, vent configuration and
altitude.
Air shutter adjustment must be done by a qualified
installer!
Closing the air shutter will cause a more yellow flame, but can lead to
carboning. Opening the air shutter will cause a more blue flame, but
can cause flame lifting from the burner ports. The flame may not appear
yellow immediately; allow 15 to 30 minutes for the final flame colour to be
established.
It's important to periodically perform a visual check of the pilot and burner
flames.
Compare them to the illustrations provided.
Wolf Steel Ltd., 24 Napoleon Rd., Barrie, ON L4M 0G8 Canada
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.
LEAK TEST.
FLAME CHARACTERISTICS
PRESSURE ADJUSTMENT
B
A
MAXIMUM INPUT RATINGS
NG
APPLIANCE
26,000 BTU/hr
(C)D42
31,000 BTU/hr
(C)DX42
1(866)820-8686
PILOT SCREW
P
30,000 BTU/hr
W415-2942 / A / 09.09.20
www.napoleon.com
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