3.0 Adjustment; Venturi Adjustment - Napoleon HDX35 Installation And Operation Manual

3.0 adjustment

EN
3.1 flame characteristics
It's important to periodically perform a visual check of
the pilot and burner flames. Compare them to the
illustration provided. If any flames appear abnormal,
call a service person.
3.2

venturi adjustment

This appliance has an air shutter that has been factory set open according to
the chart below:
Regardless of venturi orientation, closing the air shutter will cause a more
yellow flame, but can lead to carbonization. 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.
AIR SHUTTER ADJUSTMENT MUST ONLY BE DONE BY A QUALIFIED
INSTALLER!
note:
It is important that the orifice is securely inserted into the venturi.
AIR SHUTTER OPENINGS, BOTH BURNERS
P F 3/8"
NG F 3/8"
8
W415-2193 / D / 11.08.18
SIT MILLIVOLT
(12.7mm - 9.5mm) of
R 7/16"
R 1/4"
3/8" - 1/2"
ADD IMAGE
(9.5mm - 12.7mm)
HERE
Flame must envelop
upper
3/8" to 1/2"
thermocouple &
thermopile
36.1
VENTURI
BURNER
ORIFICE
33.1
AIR
SHUTTER
OPENING