Vanguard BDV34NB Owner's Operation And Installation Manual page 9

Natural gas / propane/lp gas direct-vent fireplace
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VENTING
INSTALLATION
Continued
3. Attach vent pipe assembly to the fire-
place. Set fireplace in front of it's per-
manent location to insure minimum
clearances. Mark the wall for a 10"
square hole (for noncombustible ma-
terial such as masonry block or con-
1
crete, a 7
/
" diameter hole is accept-
2
able). See Figure 12. The center of the
hole should line up with the center-
line of the horizontal rigid vent pipe.
Cut a 10"x10" (254mm x 254mm)
square hole through combustible ex-
1
terior wall (7
/
" [190mm] diameter
2
hole if noncombustible). Frame as
necessary (see Figure 12).
4" Clamp
Female
7" Clamp
Locking
Lugs
Spacer
Spring
4" Flex
Male
Pipe
Slots
7" Flex
Pipe
Rigid Vent Pipe Flexible Vent Pipe
Figure 11 - Vent Pipe Connections
Vent Opening
Combustible Wall
10"
(254mm)
10"
(254mm)
(Framing
Detail)
Vent Opening
Noncombustible Wall
1
7
/
"
2
(190mm)
Figure 12 - Vent Opening Requirements
106514
4. Apply a bead of non-hardening mastic
around the outside edge of the vent cap.
Position the vent cap in the center of
the 7
1
/
" or 10" hole on the exterior
2
wall with the arrow on the vent cap
pointing up. Insure proper clearance of
1" to combustibles is maintained. At-
tach the vent cap with four wood screws
supplied (see Figure 13). Note : Re-
place the wood screws with appropri-
ate fasteners for stucco, brick, concrete,
or other types of siding.
WARNING: Do not recess vent
termination in to any wall. This
will cause a fire hazard.
For vinyl siding, stucco, or wood exte-
rior use vinyl siding standoffs between
vent cap and exterior wall. The vinyl sid-
ing standoff prevents excessive heat from
melting the vinyl siding material. Bolt the
vent cap to the standoff. Apply non-hard-
ening mastic around outside edge of the
standoff instead of the vent cap assem-
bly. Use wood screws provided to attach
the standoff. See Figure 14.
5. Slide the wall thimble over the vent
pipe before connecting the horizontal
run to the vent cap (see Figure 15).
Vent Cap
Figure 13 - Installing Horizontal Vent Cap
9
OWNER'S MANUAL
6.
Carefully move the fireplace with vent
assembly attached toward the wall and
insert the vent pipe into the horizontal
termination. The pipe overlap should
be a minimum of 1
to the outer pipe connection. Fasten all
vent connections with screws provided.
Refer to Fireplace Installation on page
16 for instructions on securing unit to
framing or floor.
7.
Slide the wall thimble against the inte-
rior wall surface and attach with screws
provided (see Figure 15).
Apply Mastic
to All Four Sides
Figure 14 - Installing Vinyl Siding Standoff
Apply Mastic
to All Four
Sides
Wood
Screw
Vent Cap
(Horizontal
Termination)
Figure 15 - Connecting Vent Cap with
Horizontal Vent Pipe
1
/
". Apply silicone
4
Cut Vinyl Siding
Away to Fit
Standoff
Wood Screw
Standoff
Nut
Bolt
Vent Cap
Interior Wall
Surface
Wall
Thimble
Screw
Horizontal
Vent Pipe
Continued

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