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113097-01C
24
2. Inspect burner, pilot and primary air inlet holes
on injector holder for dust and dirt (see Figure
36).
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.
5. Blow air into the primary air holes on the
injector holder.
6. In case any large clumps of dust have now been
pushed into the burner repeat steps 3 and 4.
Clean the pilot assembly also. A yellow tip on the
pilot flame indicates dust and dirt in the pilot as
-
sembly. There is a small pilot air inlet hole about
two inches from where the pilot flame comes out
of the pilot assembly (see Figure 37). With the unit
off, lightly blow air through the air inlet hole. You
may blow through a drinking straw if compressed
air is not available.
CLEANING AND
MAINTENANCE
Continued
Figure 36 - Injector Holder On Outlet
Burner Tube
Burner Tube
Primary Air
Inlet Holes
Injector Holder
Figure 37 - Pilot Inlet Air Hole
Burner Tube
Pilot Assembly
Pilot Air
Inlet Hole
Ports/Slots
LOGS
• If you remove logs for cleaning, refer to Install-
ing Logs, page 16, to properly replace logs.
• Replace log(s) if broken or chipped (dime-sized
or larger).
MAIN BURNER
Periodically inspect all burner flame holes with
the heater running. All slotted burner flame holes
should be open with yellow flame present. All
round burner flame holes should be open with a
small blue flame present. Some burner flame holes
may become blocked by debris or rust, with no
flame present. If so, turn off heater and let cool.
Remove blockage. Blocked burner flame holes
will create soot.
SERVICE HINTS
When Gas Pressure Is Too Low
• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specified heat
• for propane/LP units, propane/LP gas supply
may be low
You may feel your gas pressure is too low. If
so, contact your local propane/LP or natural gas
supplier.
TECHNICAL SERVICE
You may have further questions about installation,
operation or troubleshooting. If so, contact DESA
Heating Productsʼ Technical Service Department
at 1-866-672-6040. When calling please have your
model and serial numbers of your heater ready.
You can also visit DESA Heating Productsʼ techni
-
cal service web site at www.desatech.com.