Desa VTGF33NRA - Manual (Page 25)

www.desatech.com 110112-01C 25
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.
CLEANING 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 45 and 46).
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
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
two inches from where the pilot flame comes out
of the pilot assembly (see Figure 47, page 26).
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 47, page 26. The access hole for natural
pilot is behind the pilot bracket on the top of
burner carriage (see Figure 47, page 26). You may
blow through a drinking straw if compressed air
is not available.
Figure 45 - Injector Holder On Outlet
Burner Tube - Rear Burner
Figure 46 - Injector Holder On Outlet
Burner Tubes - Front and Middle Burners
Primary Air
Inlet Holes
Injector
Holder
Ports/Slots
Injector Holder
Primary Air
Inlet Holes
Burner
Tube