19
W415-0689 / A / 06.08.10
8.0 ADJUSTMENTS
8.1 GAS PRESSURE ADJUSTMENT
Outlet pressure can be adjusted if not measuring 3.5” W.C. (NG)
or 10.0” W.C. (LP).
8.1.1
Pressure can be checked by removing cap (A) using a
3/16 Allen key and replacing it with a 1/8 NPT barb
fi
tting.
8.1.2
Place pressure gauge tube over the
fi
tting.
8.1.3
Pressure can be adjusted by removing cap (B) using a
fl
at screwdriver, and adjust-
ing the nylon plug with the
same screw driver. Turning
the plug in (clockwise) will
increase the pressure.
1/8”
1/4”
A
1/8
NPT BARB
FITTING
10
PROPANE
GAS
PRESSURE
GAUGE
NATURAL
GAS
3.5
8.2 VENTURI
ADJUSTMENT
This model has an air shutter that has been factory set open according to the chart below:
Closing the air shutter will cause a more yellow
fl
ame, but can lead to carboning.
Opening the air shutter will cause a more blue
fl
ame, but can cause
fl
ame lifting
from the burner ports. The
fl
ame may not appear yellow immediately; allow 15
to 30 minutes for the
fi
nal
fl
ame color to be established.
AIR SHUTTER ADJUSTMENT MUST ONLY BE DONE BY A QUALIFIED
INSTALLER!
NOTE: It is important that the venturi sits down tight on the orifi ce.
49.3
VENTURI
BURNER
AIR
SHUTTER
OPENING
AIR SHUTTER OPENINGS
LP
3/16” DIA
NG
1/16” DIA
8.3 FLAME
CHARACTERISTICS
It is important to periodically perform a visual check of the burner
fl
ame. Compare them
to the illustration provided.
