Desa DVF32TMHST - Manual (Page 12)

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BURNER FLAME ADJUSTMENT
The air shutter is located at the underside of the main burner
(There are two (2) air shutters on the Propane gas versions).
All have been factory preset to the proper air-to gas ratio
which results in an even, clean burning flame across the
burner (See Figure 31).
If readjustment is necessary, you can restore the proper air to
gas ratio by loosening the air shutter screw and rotating the air
shutter until the proper flame setting is achieved. (The air
shutter’s normal setting is “fully opened”). Do not forget to
retighten the air shutter screws (refer to figure 32).
BURNER REMOVAL
BEFORE PROCEEDING, MAKE SURE THE ENTIRE
UNIT IS COOL.
1. Remove the top and bottom louvers. Open the glass door.
2. Carefully remove the log set and grate.
3. Remove the screws that attach the burner.
4. Slide the burner towards the front of the unit, lift, and
remove from the firebox.
5. To reinstall the burner, slide the burner towards the rear
of the unit and secure burner with screws. MAKE
CERTAIN THE ORIFICE IS INSIDE THE VENTURI
TUBE’S AIR SHUTTER.
6. Replace the log set and grate, close door with latches, and
attach louvers.
Figure 29 LOUVER REMOVAL
Figure 30 GLASS DOOR REMOVAL
WARNING: The glass door must be securely in place
before operating the fireplace. Do not operate the fireplace
if glass is missing or broken.
Figure 31 BURNER FLAME
Figure 32 VENTURI / ORIFICE CONNECTION