Pilot/Electrode.assembly.adjustment; Burner.flame.adjustment - Desa VVF36 Owner's Operation And Installation Manual

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.
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.
1/8"
(0.3 cm)
Figure 52 - Correct Pilot Flame Pattern
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.
Air.Shutter Air.
Opening
Orifice
Firebox.Bottom
Figure 54 - Air Shutter Adjustment
6
FIREPLACE INSTALLATION
3/8" - 1/2"
(0.95 cm -
1.3 cm)
bURNER FLAME ADjUSTMENT
Burner
Adjustment.
Screw
Venturi.
Tube
Burner.Gas.Line
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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.
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.
Edge.of.Burner
Figure 53 - Correct Ignitor Location
CORRECT
INCORRECT.
CLOSE.
SHUTTER
INCORRECT.
OPEN.SHUTTER
Figure 55 - Burner Flame Patterns
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.
3/4"
(19 mm)
Top.of.Burner
(Side View)
Long, Blue Flame with
Yellow.Tips
Short, Sharp, Blowing Flame
Long, Uneven, Yellow Flame
1/2"
(12.7 mm)
56131H