Restricting Vertical Vents; Venturi Adjustment - Napoleon Ascent Série Manuel D'installation

11.8 restricting vertical vents

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 the "replacements" section of the owner's manual 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. Specifi c instructions are included with the kit.

11.9 venturi adjustment

note:
An air shutter access plate has been provided for initial flame appearance setup. It becomes more difficult to
adjust once the appliance has been finished.
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.
BL36-1
VENTURI ADJUSTMENT CHART
NG 1/16" (1.5mm)
P 1/8" (3.2mm)
VENTURI ADJUSTMENT CHART
NG
P
AIR SHUTTER
ACCESS PLATE
finishing
16.6
Venturi
Burner
Air
Shutter
Opening
BL46
1/8" (3.2mm)
1/4" (6.4mm)
W415-1705 / 06.07.17
EN
47