Installation manual
111285-01A
For more information, visit www.desatech.com
For more information, visit www.desatech.com
19
19
BURNER FLAME PATTERN
Figure 39 shows a correct burner flame pattern. Figure 40 shows an
incorrect burner flame pattern. If burner flame pattern is incorrect,
• turn heater off (see To Turn Off Gas to Appliance, page 17)
• see Troubleshooting, pages 21 through 23
BURNER PRIMARY AIR HOLES
Air is drawn into the burner through the holes in the fitting at the
burner entrance. These holes may become blocked with dust or lint.
Periodically inspect these holes for any blockage and clean if
needed. Blocked air holes will create soot.
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.
Figure 39 - Correct Flame Pattern with Control Knob Set to High
Flame.
Figure 40 - Incorrect Flame Pattern with Control Knob Set to
High Flame
Approx. 3-6"
Above Top of
Logs
More Than
8" Above
Top of Logs
CLEANING AND
MAINTENANCE
WARNING: Turn off heater and let cool before
cleaning.
CAUTION: You must keep control areas, burner,
and circulating air passageways of heater clean. In-
spect these areas of heater before each use. Have
heater inspected yearly by a qualified service person.
Heater may need more frequent cleaning due to exces-
sive lint from carpeting, pet hair, bedding material, etc.
CLEANING 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 com-
pressed air in a can. You can use a vacuum cleaner in the blow
position. If using compressed air in a can, please follow the direc-
tions 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 burner, pilot, and primary air inlet holes on injector
holder for dust and dirt (see Figure 41).
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.
Figure 41 - Injector Holder On Outlet Burner Tube
Burner
Tube
INSPECTING BURNERS
Burner Flame Pattern
Burner Primary Air Holes
Main Burner
CLEANING AND MAINTENANCE
Cleaning Burner Injector Holder And Pilot Air Inlet Hole
INSPECTING BURNERS
Continued
Injector Holder
(May Be Brass or
Aluminum
Depending on
Model)
Primary Air Inlet Holes
(Shape of Holes May
Vary by Model)