Flame Adjustment; Flame Characteristics; Restricting Vertical Vents - Napoleon BGD42CFN Installation And Operating Instructions Manual

9.3

FLAME ADJUSTMENT

9.4

FLAME CHARACTERISTICS

It's important to periodically perform a visual check of the pilot and
burner fl ames. Compare them to the illustrations provided. If any fl ames
appear abnormal call a service person.
9.5

RESTRICTING VERTICAL VENTS

Vertical terminations may display a very active fl ame. As this
appearance is not desirable, the vent exit must be restricted
using restrictor plate, W500-0205. This reduces the velocity
of the exhaust gases, slowing down the fl ame pattern and
creating a more traditional appearance.
Remove the two screws on either side of the exhaust collar
inside the fi rebox. Install the plate as shown. Replace the
screws.
Turn clockwise to
increase fl ame height
ADJUSTMENT
FLAME
KNOB
FLAME MUST
ENVELOPE UPPER
3/8" TO 1/2" OF
THERMOCOUPLE &
THERMOPILE
3/8" - 1/2"
54.2
TOP OF THE FIREBOX
RESTRICTOR PLATE
W415-0779 / A / 04.27.10
37