Pilot Burner Adjustment; Flame Characteristics - Napoleon Acies Série Manuel D'installation

finishing
EN

12.3 pilot burner adjustment

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 pressure with main burner 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
pressure with main burner operating on "HI".
After taking pressure readings, be sure to turn screws
clockwise fi rmly 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 a
synthetic scrub pad (such as Scotch-Brite™) can be used to remove the paint from the pilot hood, electrode
and fl ame sensor.
Pressure
Min. Inlet Gas Supply Pressure
Inlet
Max. Inlet Gas Supply Pressure
Manifold Pressure (Under Flow Conditions)
Outlet

12.4 flame characteristics

It's important to periodically perform a visual check of
the pilot and burner flames. Compare them to the
illustration provided. If any flames appear abnormal,
call a service person.
54
W415-1707 / 07.04.17
Natural Gas Natural Gas
(inches) (millibars)
*13" 17.4mb
(minimum 4.5") (minimum 11.2mb)
3.5" 8.7mb
Peak
ODS - MILLIVOLT
A
INSERT PILOT ASSEMBLY
PSE THERMOCOUPLE
ELECTRODE
3/8" - 1/2"
(9.5mm - 12.7mm)
Propane
Natural Gas
SENSOR
(inches)
Flame must envelope
4.5" w.c. (11mb)
upper
13"
3/8" to 1/2"
*13" w.c. (32mb)
(12.7mm - 9.5mm) of
(minimum 11")
thermocouple
3.5" w.c. (9mb)
10"
*Maximum inlet pressure not to exceed 13"
*Maximum inlet pressure not to exceed 13"
SIT ELECTRONIC IGNITION
3/8" - 1/2"
(9.5mm - 12.7mm)
ADD IMAGE
Flame must envelope
upper
HERE
3/8" to 1/2"
(12.7mm - 9.5mm) of
Flame sensor
SIT MILLIVOLT
3/8" - 1/2"
Valley
(9.5mm - 12.7mm)
Flame must envelope
upper
3/8" to 1/2"
(12.7mm - 9.5mm) of
thermocouple &
thermopile
B
PILOT SCREW
PILOT
BURNER
FLAME
Propane
Propane
(millibars)
11" w.c. (27mb)
32.4mb
13" w.c. (32mb)
(minimum 27.4mb)
10" w.c. (25mb)
24.9mb
25.1
36.1
L50 Illustrated
La fla
la the
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