Vanguard Heating VDVF36PP - Manual (Page 19)

19 105706
OWNER’S MANUAL
INSTALLATION
Continued
WARNING: Improper installa-
tion, adjustment, alteration, ser-
vice, or maintenance can cause
injury or property damage. Refer
to this manual. For assistance or
additional information, consult a
qualified installer, service
agency, or gas supplier.
BURNER REMOVAL
CAUTION: Before proceed-
ing, make sure the entire unit is
cool.
1. Remove the top and bottom louvers and
screen. Open the glass door (left or right
side).
2. Carefully remove the log set.
3. Remove the screw that attaches the
burner to the bracket.
4. Slide the burner towards the front of
the unit, lift, and remove from the fire-
box.
5. To reinstall the burner, slide the burner
towards the rear of the unit and secure
burner to bracket with screw.
CAUTION: Make certain the
orifice is inside the venturi tube's
air shutter, see Figure 48.
6. Replace the log set, close door with
latches, and attach screen and louvers.
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 4).
IMPORTANT: Lou-
vered openings must not be obstructed, and
upper and lower panels must remain remov-
able 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
noncombustible.
Left
Right
Bac
k
F
ront
Left
F
ront
Right
Bac
k
B
B
A
A
Figure 44 - Installing Logs “A” (Top View)
Figure 45 - Installing Logs “B ” (Top View)
PILOT 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 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 47.
BURNER FLAME
ADJUSTMENT
Figure 47 - Correct Pilot Flame Pattern
The air shutter, located at the underside of the
main burner (see Figure 48), has been factory
preset to the proper air-to-gas ratio which
results in an even, clean burning flame across
the burner (see Figure 49). 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 nor-
mal setting is “full opened”. Do not forget to
retighten the air shutter screws.
Figure 49 - Burner Flame Patterns
CORRECT
INCORRECT
CLOSE
SHUTTER
INCORRECT
OPEN
SHUTTER
Short, Sharp,
Blowing Flame
Long, Blue Flame
with Yellow Tips
Long, Uneven,
Yellow Flame
1/8"
(3mm)
3/8" - 1/2"
(9.5mm-12.3mm)
Figure 48 - Connecting Venturi and Orifice
Air Shutter
Orifice
Burner
Firebox Bottom
Venturi
Tube
Burner Gas Line
Left
Right
Bac
k
F
ront
D
C
C
D
E
Figure 46 - Installing Twigs “C, D, E ” (Top
View)