37
W415-1028 / A / 08.13.12
10.1.1 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 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.
AIR SHUTTER ADJUSTMENT MUST ONLY BE DONE BY A QUALIFIED
INSTALLER!
AIR
SHUTTER
OPENING
VENTURI
BURNER
ORIFICE
49.1
NG
LP
BGD40G
1/8"
5/16"
It’s 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.
FLAME MUST ENVELOP
UPPER 3/8” TO 1/2” OF
FLAME SENSOR
PILOT
BURNER
ELECTRODE
FLAME
SENSOR
54.1A
10.2 FLAME CHARACTERISTICS
10.3 RESTRICTING VERTICAL VENTS
77.3
Vertical installations may display a very active
fl
ame. If this appearance is not desirable, the vent exit must
be restricted using a restrictor vent kit. Refer to “ACCESORIES” in the “REPLACEMENTS” section for the
appropriate kit. This will reduce the velocity of the exhaust gases, slowing down the
fl
ame pattern and creating
a more traditional gentle
fl
ame appearance. Speci
fi
c instructions are included with the kit.
f i r e - p a r t s . c o m