Adjustment; Flame Characteristics; Venturi Adjustment - Napoleon HD81 Installation And Operating Instructions Manual

6

3.0 ADJUSTMENT

3.1

FLAME CHARACTERISTICS

It's important to periodically perform a visual check of the pilot and burner fl ames. Compare them to the illustra-
tions provided. If any fl ames appear abnormal call a service person.
3.2

VENTURI ADJUSTMENT

This model has an air shutter that has been factory set open according to the chart
below:
Closing the air shutter will cause a more yellow fl ame, but can lead to carboning.
Opening the air shutter will cause a more blue fl ame, but can cause
fl ame lifting from the burner ports. The fl ame may not appear yellow
immediately; allow 15 to 30 minutes for the fi nal fl ame color to be
established.
AIR SHUTTER ADJUSTMENT MUST ONLY BE DONE BY A QUAL-
IFIED INSTALLER!
W415-0808 / 06.16.09
PILOT
BURNER
ELECTRODE
FLAME
SENSOR
FLAME MUST ENVELOP
UPPER 3/8" TO 1/2" OF
FLAME SENSOR
Air Shutter Openings both Burners
LP
NG
3/8" - 1/2"
54.1
AIR
SHUTTER
OPENING
VENTURI
ORIFICE
BURNER
49.4
7/16"
3/16"