42
W415-1301 / A / 05.23.14
EN
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 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.
AIR SHUTTER ADJUSTMENT MUST ONLY BE DONE BY A QUALIFIED
INSTALLER!
AIR
SHUTTER
OPENING
VENTURI
BURNER
ORIFICE
49.1
8.0 ADJUSTMENT
8.1 PILOT BURNER ADJUSTMENT
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
readas described on the chart below. Check with main burner operating on
“HI”.
Outlet pressure can be checked the same as above using screw (B). Gauge
should readas described on the chart below. Check 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 sandpaper can be used to remove
the paint from the pilot hood, electrode and
fl
ame sensor.
39.5B
A
B
Pressure
Inlet
Outlet
Natural Gas
(inches)
Natural Gas
(millibars)
Propane
(inches)
Propane
(millibars)
7"
(MIN. 4.5")
3.5"
13"
(MIN. 11")
10"
17.4mb
(MIN. 11.2mb)
8.7mb
32.4mb
(MIN. 27.4mb)
24.9mb
8.2 VENTURI
ADJUSTMENT
VENTURI ADJUSTMENT CHART
FUEL
CB35
CB42
NG
1/16” (1.5mm)
1/16” (1.5mm)
LP
3/8” (9.5mm)
3/8” (9.5mm)
PILOT
IN
OUT
ADJ
HI
LO
VENT
B
A
ELECTRONIC
MILLIVOLT
