![background image](http://html1.mh-extra.com/html/desa/vvf36/vvf36_owners-operation-and-installation-manual_2486194026.webp)
www.desatech.com
56131H
6
Figure 52 - Correct Pilot Flame Pattern
1/8"
(0.3 cm)
3/8" - 1/2"
(0.95 cm -
1.3 cm)
1/2"
(12.7 mm)
3/4"
(19 mm)
Edge.of.Burner
Top.of.Burner
Figure 53 - Correct Ignitor Location
(Side View)
bURNER FLAME ADjUSTMENT
Figure 55 - Burner Flame Patterns
Figure 54 - Air Shutter Adjustment
Air.Shutter Air.
Opening
Burner
Venturi.
Tube
Burner.Gas.Line
CORRECT
INCORRECT.
CLOSE.
SHUTTER
INCORRECT.
OPEN.SHUTTER
Short, Sharp, Blowing Flame
Long, Blue Flame with
Yellow.Tips
Long, Uneven, Yellow Flame
Firebox.Bottom
Adjustment.
Screw
Orifice
The air shutter, located at the base of the
main burner (see Figure 54), has been fac
-
tory.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.
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 obstructed, and upper
and.lower.panels.must.remain.removable.for.
FIREPLACE INSTALLATION
Continued
servicing. Use only heat resistant, noncom
-
bustible. mortar. or. adhesive. when. securing.
facing.material.
Note: Combustible material, such as wood,
that has been fireproofed is not considered
noncombustible.
PILOT/ELECTRODE ASSEMbLy ADjUSTMENT
The. pilot. assembly. is. factory. preset. for. the.
proper flame height. Alteration to these set
-
tings. 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 pilot
assembly, glass door must be opened. The
proper.settings.for.thermopile.height.should.
be at a distance of 3/8" to 1/2" from pilot flame
as.shown.in.Figure.5.
The. electrode. is. installed. at. the. factory. for.
proper positioning. However, alterations to
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.
bURNER REMOVAL
CAUTION: Before proceeding
to open glass door or handle logs,
make sure entire unit is cool.
1.. Remove. top. and. bottom. louvers. and.
screen. assembly.. Undo. 4. latches. and.
open.glass.door.