Desa Tech S39NT installation manual Cleaning and Maintenance

OWNER’S MANUAL

INSPECTING

BURNERS

Continued

BURNER FLAME PATTERN

Figure 25 shows a correct burner flame pat- tern. Figure 26 shows an incorrect burner flame pattern. If burner flame pattern is incorrect,

•turn heater off (see To Turn Off Gas to Appliance, page 14)

•see Troubleshooting, pages 16 through 18

Approx. 3-6" Above

Top of Logs

Figure 25 - Correct Flame Pattern with Control Knob Set to High Flame.

More Than 8"

Above Top of Logs

Figure 26 - Incorrect Flame Pattern with Control Knob Set to High Flame

CLEANING AND MAINTENANCE

WARNING: Turn off heater and let cool before cleaning.

CAUTION: You must keep con- trol areas, burner, and circulating air passageways of heater clean. Inspect these areas of heater be- fore each use. Have heater in- spected yearly by a qualified ser- vice person. Heater may need more frequent cleaning due to excessive lint from carpeting, bedding mate- rial, pet hair, 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 pro- vides 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 recom- mend that you clean the unit every three months during operation and have heater in- spected 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 compressed 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 burner, pilot, and primary air inlet holes on injector holder for dust and dirt (see Figure 27).

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.

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.

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 two inches from where the pilot flame comes out of the pilot assembly (see Figure28). 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	Injector Holder
Tube

Primary Air

Inlet Holes

Figure 27 - Injector Holder On Outlet Burner Tube

Ports/Slots

Burner

Tube

Pilot

Assembly

Pilot Air

Inlet

Hole

Figure 28 - Pilot Inlet Air Hole

CABINET

Air Passageways

•Use a vacuum cleaner or pressurized air to clean.

Exterior

•Use a soft cloth dampened with a mild soap and water mixture. Wipe the cabi- net to remove dust.

LOGS

•If you remove logs for cleaning, refer to Installing Logs, page 10, to properly re- place logs.

•Replace log(s) if broken or chipped (dime-sized or larger).

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 be- come blocked by debris or rust, with no flame present. If so, turn off heater and let cool. Either remove blockage or replace burner. Blocked burner flame holes will create soot.

Review your video included with your heater for additional cleaning instructions.

107434 15 For more information, visit www.desatech.com