Operating instructions


5
DFX & DBX Series Vent Free Fireplaces



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
ODS/pilot lights, but flame
goes out when control knob is
released.
Burner does not light after ODS/
pilot is lit.
Burner backres during com-
bustion.
Slight smoke or odor during
initial operation.
Logs appear to smoke after
initial operation.
Heater produces a whistling
noise when burner is lit.
No gas to pilot.

1. Control knob not fully pressed in.
. Control knob not pressed in long
enough.
3. Manual shutoff valve not fully open.
4. Thermocouple connection loose at control
valve.
5. Pilot ame not touching thermocouple,
which allows thermocouple to cool, caus-
ing pilot ame to go out. This problem could
be caused by either low gas pressure, or a
dirty or partially clogged ODS/pilot.
6. Thermocouple damaged.
7. Control valve damaged.
1. Burner orice is clogged.
. Burner orice diameter is too small.
3. Inlet gas pressure is too low.
1. Manifold pressure is too low.
. Burner orice is clogged.
1. Burner orice is clogged or damaged.
. Burner is damaged.
3. Gas regulator defective.
1. Vapors from paint or curing process of logs.
. Vapors or smoke continue after heater
has run with damper or window open for
several hours.
1. Turning control knob to HIGH position
when burner is cold.
. Air in gas line.
3. Dirty or partially clogged burner orices.
1. LP-regulator shut down due to inlet pres-
sure too high.

1. Press in control knob fully.
. After ODS/pilot lights, keep control
knob pressed in for 30 seconds.
3. Fully open manual shutoff valve.
4. Hand tighten thermocouple connec-
tion until snug, then tighten 1/4 turn
more.
5a.Contact local gas company.
5b.Clean pilot with vacuum cleaner.
6. Replace thermocouple.
7. Replace control valve.
1. Clean orice.
. Replace burner orice.
3. Contact qualied service person.
1. Contact local gas company.
. Clean burner or replace burner ori-
ce.
1. Clean burner or replace burner ori-
ce.
. Replace burner.
3. Replace gas regulator.
1. Problem will stop after a few hours
of operation. Run the heater with
the damper open if you have one,
or open a window for the rst few
hours.
. Log heater is intended to be smoke-
less. Turn OFF heater and call quali-
ed service person.
1. Turn control knob to LOW position
and let warm up for a minute.
. Operate burner until air is removed
from line. Have gas line checked by
local gas company.
3. Clean burner or replace burner ori-
ce.
1. Verify LP tank regulator is installed
and set at 11" to 13" w.c.
. Replace regulator on heater.