Venturi Adjustment; Flame Characteristics - Napoleon XIR4-1N Installation And Operating Instructions Manual

7.2

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!
XIR4-1 FRONT
NG 1/4" (3.4mm)
LP 5/8" (15.9mm)
7.3

FLAME CHARACTERISTICS

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.
REAR
1/8" (3.2mm)
1/4" (3.4mm)
VENTURI
BURNER
ORIFICE
49.1
FLAME SENSOR
PILOT
ELECTRODE
3/8" - 1/2"
3/8" - 1/2"
(9.5mm - 12.7mm)
(9.5mm - 12.7mm)
ELECTRODE
FLAME
SENSOR
FLAME MUST ENVELOP
UPPER 3/8" (9.5mm) TO 1/2"
FLAME MUST ENVELOP
(12.7mm) OF FLAME SENSOR
UPPER 3/8" (9.5mm) TO 1/2"
(12.7mm) OF FLAME SENSOR
54.1B
23
EN
AIR
SHUTTER
OPENING
PILOT
BURNER
W415-1194 / 03.04.13