Napoleon GX42 Guide Rapide page 2

VENTURI ADJUSTMENT
Air shutter opening has been factory set according to the
chart below:
NG
P
Adjustment is required depending on
fuel type, vent configuration and altitude.
Air shutter adjustment
must
be done by a qualified
installer!
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.
It's important to periodically perform a visual check of the
pilot and burner flames.
Compare them to the illustrations provided.
Wolf Steel Ltd., 24 Napoleon Rd., Barrie, ON L4M 0G8 Canada
ADJUSTMENTS
GX42
1/4" (6.3mm)
1/2" (12.7mm)
AIR SHUTTER
OPENING
ORIFICE
FLAME CHARACTERISTICS
Adjust the pilot screw to provide properly sized flame. Turn in
a clockwise direction to reduce the gas flow.
Inlet pressure can be checked by turning screw (A) counter-
clockwise until loosened and then placing pressure gauge
tubing over the test point. Gauge should read 7" (minimum
4.5") water column for natural gas or 13" (11" minimum) water
column for propane. Check the inlet pressure while the main
burner is operating on "HI".
Outlet pressure can be checked the same as above using screw
(B). Gauge should read 3.5" water column for natural gas or 10"
water column for propane. Check that main burner is operating.
AFTER TAKING PRESSURE READINGS, TIGHTEN
SCREWS FIRMLY TO SEAL. DO NOT OVER TORQUE.
VENTURI
LEAK TEST
(9.5mm - 12.7mm)
• 1(866)820-8686
PRESSURE ADJUSTMENT
B
A
PILOT SCREW
MAXIMUM INPUT RATINGS
P
30,000
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
ÉLECTRODE
3/8" - 1/2"
(9,5mm - 12,7mm)
LA SONDE
DE FLAMME
• www.napoleon replaces.com
NG
30,000
VEILLEUSE
LA FLAMME DOIT
W415-1804 / A / 08.08.18
ENVELOPPER LA PARTIE
SUPÉRIEURE DE LA SONDE
DE FLAMME DE 3/8" (9,5mm)
À 1/2" (12,7mm)