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.
Ports/
SlotsInjector
Holder
Burner 
Tube
Primary Air 
Inlet Holes
Figure 42 - Injector Holder On Outlet
Burner Tube
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
WIRING DIAGRAM | |
Note: For proper operation of optional accessories, | |
the wires from the switch to the control must be | |
connected exactly as shown. | |
A |
|
UTO |
|
O |
|
FF |
|
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 |
Burner 
Tube
Pilot
Assembly 
Pilot Air
Inlet Hole 
Ports/Slots
Pressure Manifold | 7.9" W.C. |
Inlet Gas Pressure (in. of water) | |
Maximum | 13" |
Minimum* | 11" |
Shipping Weight | 122 lbs. |
* For input adjustment |
|
Figure 43 - Pilot Inlet Air Hole
24 | www.desatech.com |
