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WARNING: AIR SHUTTER ADJUSTMENT MUST BE DONE BY A QUALIFIED INSTALLER.
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.
For illustrative
purposes only.
CLOSE
OPEN
AIR SHUTTER ADJUSTMENT
AJUSTEMENT DU VOLET D'AIR
PRESSURE ADJUSTMENT
Adjust the pilot screw to provide properly sized fl ame. Turn in a clockwise direction
to reduce the gas fl ow.
B
A
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
PILOT SCREW
main burner is operating on "HI".
AFTER TAKING PRESSURE READINGS, TIGHTEN SCREWS FIRMLY TO SEAL.
DO NOT OVER TORQUE. LEAK TEST.
FLAME CHARACTERISTICS
It's important to periodically perform a visual check of the pilot and burner fl ames. Compare them to the illustrations provided.
Peak
Valley
W415-4123 / A / 02.01.23
Wolf Steel Ltd., 24 Napoleon Rd., Barrie, ON L4M 0G8 Canada •
1(866)820-8686
•
www.napoleon.com
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