Desa SMA24VPA, SMA18VNA Cleaning And Maintenance, Burner Injector Holder And Pilot Air Inlet Hole

Models: SBJ24VPA SMA24VPA SMA18VNA SBJ18VNA

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CLEANING AND

CLEANING AND

MAINTENANCE

BURNER INJECTOR HOLDER AND PILOT AIR INLET HOLE WARNING: Turn off heater and let cool before cleaning.

Manual background CAUTION: You must keep control areas, burner and circu- lating 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 clean- ing due to excessive lint from carpeting, pet hair, bedding material, etc.

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 opening 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 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 29). With the unit off, lightly blow air through the air inlet hole in the same direction as gas flow. You may blow through a

drinking straw if compressed air is not available.

Ports/

Injector

Slots

Holder

 

Manual background WARNING: Failure to keep the primary air openings of the burner clean may result in soot- ing and property damage.

BURNER INJECTOR HOLDER AND PILOT AIR INLET HOLE

The primary air inlet openings 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 openings prior to each heating season. Blocked air openings 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.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 opening on injector holder for dust and dirt (see Figure 28).

3.Blow air through the ports/slots and holes in the burner.

Burner

Tube Primary Air

Inlet Opening

Injector

(At bottom)

 

Figure 28 - Injector Holder On Outlet

Burner Tube

 

 

Pilot Air

 

Inlet Hole

Manual background Pilot Assembly

Propane/LP

Pilot Air Inlet Hole

Pilot Assembly

Natural

Figure 29 - Pilot Inlet Air Hole (Your pilot may vary from pilots shown)

114744-01C

www.desatech.com

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Desa SMA24VPA, SMA18VNA, SBJ24VPA, SBJ18VNA Cleaning And Maintenance, Burner Injector Holder And Pilot Air Inlet Hole