Napoleon Fireplaces PVAL50 Instructions D'installation page 4

4
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!
VENTURI ADJUSTMENT CHART
FUEL
NG
LP
RESTRICTOR PLATE INSTALLATION
Vertical installations may display a very active fl ame. If this appearance is not desirable, the vent exit may
be restricted using a restrictor vent kit (the appropriate kit has been supplied). This will reduce the velocity of
the exhaust gases, slowing down the fl ame pattern and creating a more traditional gentle fl ame appearance.
Specifi c instructions are included with the kit.
LHD50
1/8"
1/4"
VENTURI
BURNER
AIR
SHUTTER
OPENING
ORIFICE
49.1
77.4
W415-0766 / E / 07.30.12