Desa GA3700 - Manual (Page 24)

www.desatech.com 113109-01G 24
CLEANING AND MAINTENANCE
WARNING: Turn off fireplace
and let cool before cleaning.
CAUTION: You must keep
control areas, burner and cir-
culating air passageways of
fireplace clean. Inspect these
areas of fireplace before each
use. Have fireplace inspected
yearly by a qualified service
person. Fireplace may need
more frequent cleaning due to
excessive lint from carpeting,
bedding material, pet hair, etc.
WARNING: Failure to keep
the primary air opening(s) of
the burner(s) clean may result in
sooting and property damage.
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 in-
let 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 heater 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. 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 dam-
age 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 Figures 42 and 43).
3. Blow air through the ports/slots and holes
in the burner.
Figure 42 - Injector Holder On Outlet
Burner Tube
Figure 43 - Pilot Inlet Air Hole
Burner
Tube
Pilot
Assembly
Pilot Air
Inlet Hole
Ports/Slots
Burner
Tube
Injector Holder
(May Be Brass
or Aluminum
Depending on
Model)
Primary Air Inlet Holes (Shape
of Holes May Vary by Model)
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 above.
Clean the pilot assembly also. A yellow tip on
the pilot flame indicates dust and dirt in the
pilot assembly. There is a small pilot air inlet
hole about 2" from where the pilot flame comes
out of the pilot assembly (see Figure 43). 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.
LOGS
• If you remove logs for cleaning, refer to
Installing Logs, page 17, to properly replace
logs.
• Replace log(s) if broken or chipped (dime-
sized or larger).