Desa FDCFTN - Manual (Page 24)

111244-01A
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24
INSPECTING BURNERS
Check pilot flame pattern and burner flame patterns often.
PILOT FLAME PATTERN
Figure 46 shows a correct pilot flame pattern. Figure 47 shows an
incorrect pilot flame pattern. The incorrect pilot flame is not
touching the thermocouple. This will cause the thermocouple to
cool. When the thermocouple cools, the fireplace will shut down.
If pilot flame pattern is incorrect, as shown in Figure 47
• turn fireplace off (see To Turn Off Gas to Appliance, page 20
for Thermostat-Controlled Models or page 22 for Remote-
Ready Models)
• see Troubleshooting, pages 26 through 28
Note: The pilot flame on natural gas units will have a slight curve,
but flame should be blue and have no yellow or orange color.
Figure 46 - Correct Pilot Flame
Pattern (Propane/LP Remote-
Ready Shown)
Pilot Burner
Thermocouple
Figure 47 - Incorrect Pilot Flame
Pattern (Propane/LP Remote-
Ready Shown)
Pilot Burner
Thermocouple
INSPECTING BURNERS
Pilot Flame Pattern
Burner Flame Pattern
CLEANING AND MAINTENANCE
Cleaning Burner Injector Holder and Pilot Air Inlet Hole
Figure 48 - Correct Burner Flame Pattern
Figure 49 - Incorrect Burner Flame Pattern
BURNER FLAME PATTERN
Figure 48 shows a correct burner flame pattern. Figure 49 shows an
incorrect burner flame pattern. The incorrect burner flame pattern
shows sporadic, irregular flame tipping. The flame should not be
dark or have an orange/reddish tinge.
Note: When using the fireplace the first time, the flame will be
orange for approximately one hour until the log cures.
WARNING: Turn off fireplace and let cool before
cleaning.
CAUTION: You must keep control areas, burner, and
circulating air passageways of fireplace clean. Inspect
these areas of fireplace before each use. Have fireplace
inspected yearly by a qualified service person. Fire-
place may need more frequent cleaning due to exces-
sive lint from carpeting, pet hair, bedding material, etc.
WARNING: Failure to keep the primary air
opening(s) of the burner(s) clean may result in soot-
ing and property damage.
CLEANING BURNER INJECTOR HOLDER
AND PILOT AIR INLET HOLE
The primary air inlet holes allow the proper amount of air to mix with
the gas. This provides a clean burning flame. Keep these holes clear
of dust, dirt, lint, and pet hair. Clean these air inlet holes prior to each
heating season. Blocked air holes will create soot. We recommend
that you clean the unit every three months during operation and have
fireplace inspected yearly by a qualified service person.
We also recommend that you keep the burner tube and pilot assembly
clean and free of dust and dirt. To clean these parts we recommend
using compressed air no greater than 30 PSI. Your local computer store,
hardware store, or home center may carry compressed air in a can. You
can use a vacuum cleaner in the blow position. If using compressed air
in a can, please follow the directions on the can. If you don't follow
directions on the can, you could damage the pilot assembly.
1. Shut off the unit, including the pilot. Allow the unit to cool for
at least thirty minutes.
2. Inspect burner, pilot, and primary air inlet holes on injector
holder for dust and dirt (see Figure 50, page 25).
3. Blow air through the ports/slots and holes in the burner.
4. Check the injector holder located at the end of the burner tube
again. Remove any large particles of dust, dirt, lint, or pet hair
with a soft cloth or vacuum cleaner nozzle.
CLEANING AND
MAINTENANCE
If burner flame pattern is incorrect, as shown in Figure 49
• turn fireplace off (see To Turn Off Gas to Appliance, page 20
for Thermostat-Controlled Models or page 22 for Remote-
Ready Models)
• see Troubleshooting, pages 26 through 28