Desa CDR3924PT - Manual (Page 19)

www.desatech.com 19 113183-01F
Access
Hole for
Cleaning
Natural
Pilot
CLEANING AND
MAINTENANCE
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: You must keep con-
trol 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 HOLDERS AND
PILOT AIR INLET HOLES
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
tubes 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. Shut off the unit, including the pilot. Allow
the unit to cool for at least thirty minutes.
2. Inspect burners, pilot and primary air inlet
holes on injector holder for dust and dirt (see
Figures 28 or 29).
3. Blow air through the ports/slots and holes in
the burners.
4. Check the injector holders located at the end
of the burner tubes again. Remove any large
Figure 28 - Injector Holder On Outlet
Burner Tube - Rear Burner
Figure 30 - Cleaning Pilot Air Inlet Hole
(Your pilot may vary from pilots shown)
Figure 29 - Injector Holder On Front
Outlet Burner Tube
Injector Holder
Primary Air Inlet Holes
Pilot Air Inlet Hole
Pilot
Assembly
Ports/Slots
Access
Hole for
Cleaning
Propane/LP
Pilot
Pilot
Bracket
Burner
Tube
Injector Holder
Primary Air
Inlet Holes
LOGS
• If you remove logs for cleaning, refer to Install-
ing Logs, page 14, to properly replace logs.
• Replace log(s) if broken or chipped (dime-sized
or larger).
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 holders.
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 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. The access hole for
propane/LP pilot is on the front of the burner carriage
as shown in Figure 30. The access hole for natural
pilot is behind the pilot bracket on the top of burner
carriage (see Figure 30). You may blow through a
drinking straw if compressed air is not available.