Pilot/Electrode Assembly Adjustment; Burner Flame Adjustment - Desa (V)DVF36 Owner's Operation And Installation Manual

INSTALLATION
Continued
DECORATIVE FACING
Any noncombustible material may be used for
facing (glass, tile, brick, etc.) as long as the proper
clearances are observed (see Clearances, page 6).
IMPORTANT: Louvered openings must not be ob-
structed, and upper and lower panels must remain
removable for servicing. Use only heat-resistant,
noncombustible mortar or adhesive when securing
facing material.
Note: Combustible material, such as wood, that
has been fireproofed is not considered noncom-
bustible.
PILOT/ELECTRODE
ASSEMbLy ADjUSTMENT
The pilot assembly is factory preset for the proper
flame height. Alteration to these settings may have
occurred during shipping and handling. If this is the
case, some minor adjustment may be necessary and
should be done by a qualified technician. To access
the pilot assembly, the glass door must be opened.
The proper settings for the thermopile height should
be at a distance of 3/8" to 1/2" from the pilot flame
as shown in Figure 52.
The electrode is installed at the factory for proper
positioning. However, alterations to the position
may have occurred due to shipping and handling.
These settings may need adjustment and must be
done by a qualified technician. The correct position
and height is as shown in Figure 53.
1/8"
(0.3cm)
Figure 52 - Correct Pilot Flame Pattern
Edge of Burner
Figure 53 - Correct Ignitor Location
(Side View)
6
3/8" - 1/2"
(.95cm-1.3cm)
3/4"
(19 mm)
1/2"
(12.7 mm)
Top of
Burner
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bURNER FLAME
ADjUSTMENT
The air shutter, located at the base of the main
burner (see Figure 54), has been factory preset
to the proper air-to-gas ratio which results in an
even, clean burning flame across the burner (see
Figure 55). 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 shutter's
normal setting is fully open. Do not forget to
retighten the air shutter screw.
Air
Opening
Air Shutter
Orifice
Firebox Bottom
Figure 54 - Air Shutter Adjustment
CORRECT
Long, Blue Flame with
INCORRECT
CLOSE
SHUTTER
Short, Sharp, Blowing Flame
INCORRECT
OPEN SHUTTER
Long, Uneven, Yellow Flame
Figure 55 - Burner Flame Patterns
BURNER REMOVAL
CAUTION: Before proceed-
ing to open glass door or handle
logs, make sure the entire unit
is cool.
1. Remove top and bottom louvers and screen as-
sembly. Undo 4 latches and open glass door.
2. Carefully remove the log set intact and set
aside (see Figure 56, page 27).
3. Remove the 2 screws holding burner to hearth
pan.
Burner
Adjustment
Screw
Venturi
Tube
Burner Gas Line
Yellow Tips
56131-F