Flame Characteristics; Venturi Adjustment; Restricting Vertical Vents - Napoleon GDS26P-1 Installation And Operating Instructions Manual

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 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 a synthetic scrub pad (such as
Scotch-Brite™) can be used to remove
the paint from the pilot hood, electrode
and fl ame sensor.
*Maximum inlet pressure not to exceed 13".
9.3

FLAME CHARACTERISTICS

It's important to periodically perform a visual check of the pilot and burner fl ames.
Compare them to the illustrations provided. If any fl ames appear abnormal call a
service person.
9.4

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!
GDS26-1
NG 3/16" (5mm)
P 3/8" (10mm)
9.5

RESTRICTING VERTICAL VENTS

Vertical installations may display a very active fl ame. If this appearance is not desirable, the vent exit must
be restricted using a restrictor vent kit. Refer to "ACCESSORIES" in the "REPLACEMENTS" section for
the appropriate kit. This will reduce the velocity of the exhaust gases, slowing down the fl ame pattern and
creating a more traditional gentle fl ame appearance. Specifi c instructions are included with the kit.
FLAME
SENSOR
SPARK MODULE
(9.5mm - 12.7mm)
Natural Gas Natural Gas
Pressure
(inches)
*7"
Inlet
(MIN. 4.5")
(MIN. 11.2mb)
3.5"
Outlet
PILOT SCREW
PILOT
ELECTRODE
BURNER
3/8" - 1/2"
FLAME
SENSOR
FLAME MUST ENVELOP
FLAME MUST ENVELOP
UPPER 3/8" (9.5mm) TO
UPPER 3/8" (9.5mm) TO 1/2"
1/2" (12.7mm) OF FLAME
SENSOR
(12.7mm) OF FLAME SENSOR
Propane
(millibars) (inches)
17.4mb
13"
ÉLECTRODE
(MIN. 11")
8.7mb 10"
3/8" - 1/2"
(9,5mm - 12,7mm)
39.1E
LA SONDE
DE FLAMME
54.3
VENTURI
BURNER
ORIFICE
49.1
77.3
W415-2183 / B / 02.10.17
41
PILOT
BURNER
EN
Propane
(millibars)
32.4mb
(MIN. 27.4mb)
VEILLEUSE
24.9mb
LA FLAMME DOIT
ENVELOPPER LA PARTIE
SUPÉRIEURE DE LA SONDE
DE FLAMME DE 3/8" (9,5mm)
À 1/2" (12,7mm)
AIR
SHUTTER
OPENING