W415-1283 / E / 12.21.16
46
9.0 ADJUSTMENT
EN
9.1
PILOT BURNER ADJUSTMENT
Adjust the pilot screw to provide properly sized flame. Turn in a
clockwise direction to reduce the gas flow.
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 OVER
TORQUE.
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
3/8” - 1/2”
(9.5mm - 12.7mm)
ELECTRODE
PILOT SCREW
FLAME SENSOR
PILOT
BURNER
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 flame sensor.
FLAME MUST ENVELOP
UPPER 3/8” (9.5mm) TO 1/2”
(12.7mm) OF FLAME SENSOR
* Maximum inlet pressure not to
exceed 13".
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!
39.7A
VENTURI
BURNER
ORIFICE
49.1
AIR
SHUTTER
OPENING
VENTURI ADJUSTMENT
CHART
FUEL
CBHD4
NG
1/16” (1.6mm)
P
5/16” (8mm)
A
B
Pressure
Natural Gas
(inches)
Natural Gas
(millibars)
Propane
(inches)
Propane
(millibars)
Inlet
*7"
(MIN. 4.5”)
17.4mb
(MIN. 11.2mb)
13"
(MIN. 11")
32.4mb
(MIN. 27.4mb)
Outlet
3.5"
8.7mb
10"
24.9mb
Содержание CBHD4N
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