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TROUBLE SHOOTING MENDOTA GAS DXV FIREPLACE
SYMPTOM
PROBABLE CAUSES
CORRECTIVE ACTION
1. Thin black coating (soot)
forms on viewing glass.
A. Incorrect gas pressure
B. Not enough combustion air
Have gas supplier check for correct gas pressure (7" W.C. Nat. Gas; 11" W.C. LP
Gas).
If sooting continues open air shutter on burner (see "Gas Flame Adjustment"
below).
If sooting still continues, shut off unit and call Mendota service person.
NOTE:
To clean glass - remove glass and wipe glass with cloth or paper towel.
2. Humming or whistling
coming from Fireplace.
A. Normal operating noise.
Some noise is normal. It is caused by the gas supply flowing through the gas
orifice. It is expected from any gas fireplace. Turning the Hi/Lo Knob on the
control can reduce the noise. Turning down the flame will reduce the heat output
of the unit.
3. A change in flame ap-
pearance or burner opera-
tion.
A. A change in gas pressure.
B. Carbon dirt or lint.
Have your gas supplier check for correct gas 7" W.C. Nat. Gas; 11" W.C. LP
Gas). If flame still needs adjustment see "Flame Adjustment" below.
Clean out carbon, spider webs, lint, etc. from shutter area.
Logs and burner.
NEVER BLOCK AIR INTAKE OR OUTLET VENTS.
Figure 9: Air Shutter
GAS FLAME ADJUSTMENT
Be sure burner and logs are properly installed (see pg. 34-38). After burner has been properly installed and operated
for two to three hours, small additional adjustments to the air shutter may be necessary for final flame appearance.
These small shutter adjustments can be made by the following procedure:
NOTE: Very small changes in shutter settings make major changes in flame appearance.
1.
Air Shutter Control Knob is located behind lower hinged grill.
2.
Light pilot; install logs and glass, and burn unit for 1/2 hours.
3.
If flame is too "blue" push Air Shutter Control Knob inward until flame turns yellow.
4.
If flame is too "orange" or is causing sooting pull out knob until flame begins to turn blue. NOTE: If sooting does not
stop, turn off fireplace & call Mendota Service Person.
5.
IMPORTANT
: Try each new shutter setting approx. 1/2 hour before making additional changes.
NOTE: Changes in front burner flame can be made by re-arranging the coals (see pg. 34-38).
CAUTION: Any changes in pilot flame must be made by qualified person and checked with voltmeter.
