Desa Tech installation manual Continued, Logs, Main Burner, Injector Holder On Outlet Burner Tube

CLEANING AND

MAINTENANCE

Continued

2.Inspect burner, pilot and primary air inlet holes on injector holder for dust and dirt (see Figure 36).

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 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 37). 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 Tube

Injector Holder

Primary Air

Inlet Holes

Figure 36 - Injector Holder On Outlet

Burner Tube

Ports/Slots

Burner Tube

Pilot Assembly

LOGS

•If you remove logs for cleaning, refer to Install- ing Logs, page 16, to properly replace 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 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.

SERVICE HINTS

When Gas Pressure Is Too Low

•pilot will not stay lit

•burners will have delayed ignition

•heater will not produce specified heat

•for propane/LP units, propane/LP gas supply may be low

You may feel your gas pressure is too low. If so, contact your local propane/LP or natural gas supplier.

TECHNICAL SERVICE

You may have further questions about installation, operation or troubleshooting. If so, contact DESA Heating Productsʼ Technical Service Department at 1-866-672-6040. When calling please have your model and serial numbers of your heater ready.

You can also visit DESA Heating Productsʼtechni- cal service web site at www.desatech.com.

Pilot Air

Inlet Hole

Figure 37 - Pilot Inlet Air Hole

24 www.desatech.com 113097-01D