85-03-01107
FV34 DECOR
Page
71
4.14
AIR SHUTTER CONTROL AND FLAME APPEARANCE
During initial installation, the air shutter opening should be
checked to be certain that the shutter is set correctly at
1/16”
-
1/8" open for natural gas and 1/4" minimum open for L.P. gas.
NOTE: For altitudes above 5,000’
, some variations may be
required.
Be sure burner media are properly installed. After burner media
has been properly installed, adjustments to the air shutter shall
be made for final flame appearance. These small shutter
adjustments can be made by the following procedure:
NOTE: All adjustments to the air shutter setting must
be made by a qualified installer, service agency, or the
gas supplier. Very small changes in shutter settings
make major changes in flame appearance.
Note: One manual air shutters exist.
1.
Air shutter control is located inside the firebox as
shown.
2.
If flame is too "blue," close air shutter in small 1/8"
increments until flame turns desired realistic
"yellow." Use glass latch tool to hook to shutter
control lever.
3.
If flame is “too dark yellow" or is causing soot on viewing glass or logs, open air shutter fully until soot stops.
Continue burning unit with air shutter fully open for 4 to 6 hours until all internal deposited soot has burned off.
4.
Once deposited soot has disappeared, close air shutter in increments of 1/8”.
Air shutter settings hint: A properly adjusted air shutter setting will yield burner flames that have an
approximate 2” high blue color base. If yell
ow colored flames are starting at burner level, air shutter is
closed too far and will create soot. If you observe that the flame is yellow starting very close to or at the
burner surface level, open air shutter. Also, if a log or part of a log is suspende d and hanging inside a yellow
portion of the flame, soot can form easily on the part of the log that is inside the yellow flame area.
IMPORTANT: Try each new shutter setting approx. ½ hr. before mak ing additional changes. NOTE: Changes
in burner flame can be made by re-arranging the coals and media and burner air shutter opening.
Figure 4-30 Burner Air Shutter Controls
