Venturi Adjustment; Flame Characteristics - Napoleon HDX52NT-2 Instructions D'installation Et D'opération

9.3

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 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!
HDX52-2
NG 3/8" (9.5mm)
P 7/16" (11mm)
9.4

FLAME CHARACTERISTICS

It is 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.
MAXIMUM INPUT RATE
NG 55,000 BTU/HR
P 55,000 BTU/HR
(9.5mm - 12.7mm)
VENTURI
BURNER
AIR
SHUTTER
OPENING
ORIFICE
49.1
PILOT
ELECTRODE
BURNER
3/8" - 1/2"
FLAME
SENSOR
FLAME MUST ENVELOP
UPPER 3/8" (9.5mm) TO 1/2"
(12.7mm) OF FLAME SENSOR
54.1B
W415-2180 / B / 08.29.18
43
EN