Desa EFS33NR - Manual (Page 24)

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CLEANING AND
MAINTENANCE
Continued
2. Inspect burner, pilot and primary air inlet holes
on injector holder for dust and dirt (see Figure
42).
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 43). 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.
Figure 42 - Injector Holder On Outlet
Burner Tube
Burner
Tube
Injector
Holder
Primary Air
Inlet Holes
Ports/
Slots
Figure 43 - Pilot Inlet Air Hole
Burner
Tube
Pilot
Assembly
Pilot Air
Inlet Hole
Ports/Slots
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).
WIRING DIAGRAM
Note: For proper operation of optional accessories,
the wires from the switch to the control must be
connected exactly as shown.
AUTO
OFF
ON
Thermopile
SPECIFICATIONS
MODELS EFS33NR, EFS33NRA,
VSGF33NR AND VSGF33NRA
Btu (Variable) 20,000/33,000
Type Gas Natural Gas Only
Ignition Piezo
Pressure Manifold 3.5" W.C.
Inlet Gas Pressure (in. of water)
Maximum 10.5"
Minimum* 5"
Shipping Weight 122 lbs.
* For input adjustment
MODELS EFS33PR, EFS33PRA,
VSGF33PR AND VSGF33PRA
Btu (Variable) 20,000/33,000
Type Gas Propane/LP Only
Ignition Piezo
Pressure Manifold 7.9" W.C.
Inlet Gas Pressure (in. of water)
Maximum 13"
Minimum* 11"
Shipping Weight 122 lbs.
* For input adjustment