Desa BDV34PA - Manual (Page 9)

9 105980
OWNER’S MANUAL
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-
crete, a 7
1 /
2
" diameter hole is accept-
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-
terior wall (7
1 /
2
" [190mm] diameter
hole if noncombustible). Frame as
necessary (see Figure 12).
WARNING: Do not recess vent
termination in to any wall. This
will cause a fire hazard.
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 /
2
" or 10" hole on the exterior
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.
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).
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
1 /
4
". Apply silicone
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).
(Framing
Detail)
10"
(254mm)
10"
(254mm)
7 1 / 2 "
(190mm)
Vent Opening
Combustible Wall
Vent Opening
Noncombustible Wall
Figure 12 - Vent Opening Requirements
Continued
Figure 14 - Installing Vinyl Siding Standoff
Figure 11 - Vent Pipe Connections
Female
Locking
Lugs
Male
Slots
Rigid Vent Pipe Flexible Vent Pipe
Spacer
Spring
4" Clamp
7" Clamp
4" Flex
Pipe
7" Flex
Pipe
Figure 13 - Installing Horizontal Vent Cap
Figure 15 - Connecting Vent Cap with
Horizontal Vent Pipe
UP
UP
Cut Vinyl Siding
Away to Fit
Standoff
Wood Screw
Nut
Bolt
Standoff
Vent Cap
Apply Mastic
to All Four Sides
Wood
Screw
Vent Cap
Apply Mastic
to All Four
Sides
Vent Cap
(Horizontal
Termination)
Interior Wall
Surface
Wall
Thimble
Horizontal
Vent Pipe
Screw