www.desatech.com
111347-01F
1
CLEANING AND
MAINTENANCE
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: You must keep
control areas, burners and
circulating air passageways
of heater clean. Inspect these
areas of heater before each use.
Have heater inspected yearly
by a qualified service person.
Heater may need more frequent
cleaning due to excessive 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
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 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 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. You can use a
vacuum cleaner in the blow position. If using com
-
pressed 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. Remove control cover log and front log.
2. Shut off the unit, including the pilot. Allow
the unit to cool for at least thirty minutes.
3. Inspect burner, pilot and primary air inlet holes
on injector holder for dust and dirt (see Figures
29 and 30).
4. Blow air through the ports/slots and holes in
the burner.
5. 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.
6. Blow air into the primary air holes on the
injector holder.
7. In case any large clumps of dust have now been
pushed into the burner repeat steps 3 and 4.
8. Replace front log and control cover log (see
Installing Logs
, page 15).
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
2" from where the pilot flame comes out of the
pilot assembly (see Figure 30). 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.
Burner Tube
Injector
Holder (May
Be Brass or
Aluminum
Depending
on Model)
Primary Air Inlet Holes
(Shape of Holes May
Vary by Model)
Figure 29 - Injector Holder On Outlet
Burner Tube
Figure 30 - Pilot Inlet Air Hole
LOGS
• If you remove logs for cleaning, refer to
Install-
ing Logs,
page 15, to properly replace logs.
• Replace log(s) if broken or chipped (dime-sized
or larger).
Burner Tube
Pilot Assembly
Pilot Air
Inlet Hole
Ports/Slots
