Adjustments; Pilot Burner Adjustment; Venturi Adjustment; Flame Characteristics - Napoleon IR3N-1 Instructions D'installation Et D'utilisation

20

7.0 ADJUSTMENTS

7.1

PILOT BURNER ADJUSTMENT

EN
Adjust the pilot screw to provide properly sized fl ame. Turn in a
clockwise direction to reduce the gas fl ow.
Check Pressure Readings:
Inlet pressure can be checked by turning screw (A) counter-clockwise
2 or 3 turns and then placing pressure gauge tubing over the test point.
Gauge should read as described on the chart below. Check that
main burner is operating on "HI".
Outlet pressure can be checked the same as above using
screw (B). Gauge should read as described on the chart
below. Check that main burner is operating on "HI".
AFTER TAKING PRESSURE READINGS, BE SURE TO
TURN SCREWS CLOCKWISE FIRMLY TO RESEAL. DO
NOT OVERTORQUE.
Leak test with a soap and water solution.
Prior to pilot adjustment, ensure that the pilot
assembly has not been painted. If overspray or
painting of the pilot assembly has occurred remove
the paint from the pilot assembly, or replace. Fine
emery cloth or sandpaper can be used to remove the paint from the pilot hood, electrode and fl ame sensor.
*Maximum inlet pressure not to exceed 13".
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 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!
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.
W415-1342 / A / 03.08.17
NG 1/16" (1.6mm)
P
PILOT
BURNER
THERMOCOUPLE
ELECTRODE
VEILLEUSE
THERMOCOUPLE
3/8" - 1/2"
(9.5mm - 12.7mm)
ELECTRODE
UPPER 3/8" (9.5mm) TO 1/2"
(12.7mm) OF THERMOCOUPLE
Natural Gas
Pressure
(inches)
*13"
Inlet
(MIN. 4.5")
3.5"
Outlet
IR3-1
3/8" (9.5mm)
(9.5mm - 12.7mm)
PILOT
SCREW
MANUAL
KNOB
THERMOCOUPLE
PILOT
BURNER
FLAME MUST ENVELOP
Natural Gas Propane
(millibars) (inches)
17.4mb
13"
(MIN. 11.2mb)
(MIN. 11")
8.7mb 10"
39.8A
VENTURI
BURNER
ORIFICE
49.1
THERMOCOUPLE
3/8" - 1/2"
PILOT
BURNER
ELECTRODE
FLAME MUST ENVELOP
UPPER 3/8" (9.5mm) TO 1/2"
(12.7mm) OF THERMOCOUPLE
54.6
THERMOCOUPLE
A
B
Propane
(millibars)
32.4mb
(MIN. 27.4mb)
24.9mb
AIR
SHUTTER
OPENING