41
W415-0889 / A / 08.11.10
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 color to be established.
AIR SHUTTER ADJUSTMENT MUST ONLY BE DONE BY A QUALIFIED
INSTALLER!
AIR
SHUTTER
OPENING
VENTURI
BURNER
ORIFICE
49.1
To access the air shutter, remove the control access panel, remove the glass door assembly and carefully remove
the log set. Remove the four screws attached to the burner pan. Slide the burner pan to the left roughly 1” then lift
up.
Air shutters have been factory set open according to the Venturi Adjustment
Chart. These settings are for (maximum) horizontal termination. Adjustment
may be required depending on fuel type, vent con
fi
guration and altitude.
VENTURI ADJUSTMENT CHART
FUEL
CHDX40
NG
3/16”
LP
7/16”
10.0 ADJUSTMENT
10.2 VENTURI ADJUSTMENT
10.1 PRESSURE ADJUSTMENT
10.3 FLAME ADJUSTMENT
Temperature adjustment is accomplished by rotating the Hi/Lo knob located near the centre of the gas control.
Turn Counterclockwise
to decrease
fl
ame
height
Turn Clockwise
to increase
fl
ame
height
Inlet pressure can be checked by turning screw (A) counter-clockwise
until loosened and then placing pressure gauge tubing over the test
point. Gauge should read 7” (minimum 4.5”) water column for natural
gas or 13” (11” minimum) water column for propane.
Check that main burner is operating on “HI”.
Outlet pressure can be checked the same as above using
screw (B). Gauge should read 3.5” water column for
natural gas or 10” water column for propane. Check that
main burner is operating on “HI”.
AFTER TAKING PRESSURE READINGS, TIGHTEN
SCREWS FIRMLY TO SEAL. DO NOT OVER TORQUE. LEAK TEST.
38.1
A
B
Содержание CHDX40NT
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