20
CLEANING AND MAINTENANCE TECHNICAL SERVICE SERVICE HINTS REPLACEMENT PARTS
CLEANING AND
MAINTENANCE
Continued
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 Figure 32). 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.
Ports/Slots
Burner Tube
Pilot Assembly
Pilot Air
Inlet Hole
Figure 32 - Pilot Inlet Air Hole
LOGS
•If you remove logs for cleaning, refer to Installing Logs, page 13 through 15, to properly replace logs.
•Replace log(s) if broken or chipped
BURNER PRIMARY AIR HOLES
Air is drawn into the burner through the 8 holes in the brass fitting at the entrance to the burner. These holes may become blocked with dust or lint. Periodically inspect these holes for any blockage and clean as necessary. 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.
TECHNICAL SERVICE
You may have further questions about installation, operation, or troubleshooting. If so, contact DESA International’s Technical Service Department at
You can also visit DESA International’s technical service web site at www.desatech.com.
SERVICE HINTS
When Gas Pressure Is Too Low
•pilot will not stay lit
•burners will have delayed ignition
•heater will not produce specified heat
•propane/LP gas supply may be low
You may feel your gas pressure is too low. If so, contact your local natural or propane/LP gas supplier.
REPLACEMENT PARTS
Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty.
PARTS UNDER WARRANTY
Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA International’s Technical Service Department at
When calling DESA International, have ready
•your name
•your address
•model and serial numbers of your heater
•how heater was malfunctioning
•type of gas used (propane/LP or natural gas)
•purchase date
Usually, we will ask you to return the part to the factory.
PARTS NOT UNDER WARRANTY
Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA International at
When calling DESA International, have ready
•model number of your heater
•the replacement part number
For
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