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TROUBLESHOOTING 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. (See
"Quiet Operation" pg. 25)
Some noise is normal. It is caused by the gas supply flow-
ing through the gas orifice. It is expected from any gas
fireplace. The noise can be reduced by turning the Hi/Lo
Knob on the control. Turning down the flame will reduce
the heat output of the unit.
3. A change in flame appear-
ance or burner operation.
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 7: Air Shutter
DIAGRAM IS FOR REPRESENTATION PURPOSES ONLY AND MAY NOT DEPICT EXACT PART SHAPES
.
MAIN BURNER GAS FLAME ADJUSTMENT
During initial installation the burner should be removed by qualified person and the air shutter opening checked to be cer-
tain that the shutter is set correctly at
1/8" to 1/4" open for Natural gas and 1/2" minimum open for L.P. gas.
NOTE: For altitudes above 5,000 ft., some variations may be required.
Be sure burner and logs are properly installed (see pg. 18). 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 knob is located behind the lower grill.
2.
If flame is too "blue" slowly push air shutter control knob in small 1/16" increments until flame turns desired realistic
"orange."
3.
If flame is too "orange" or is causing sooting on viewing glass or on logs, pull air shutter control knob outward in
1/16" increments until sooting stops. IF SOOTING DOES NOT STOP, TURN OFF UNIT AND CALL YOUR
MENDOTA SERVICE PERSON.
4.
The front coal bed burner is pre-set at 1/8" open. Normally, no adjustment is required. For LPG applications, a
slightly larger (greater than 1/8” opening in the front burner air shutter may be required if soot deposits on front logs
or on coal chunks).
IMPORTANT
: Try each new shutter setting approx. ½ hour before making additional changes. NOTE: Changes in
front burner flame can be made by re-arranging the coals. (See pg.22)
CAUTION: Any changes in pilot flame must be made by qualified person and checked with voltmeter.
