Astria.us.com
126733-01H
13
VENTING INSTALLATION
Continued
5.
Noncombustible Exterior Wall:
Position horizontal vent cap in
center of the 8-1/2" round hole and attach to exterior wall with
four wood screws provided. Before attaching vent cap to exterior
wall, run a bead of non-hardening mastic (pliable sealant) around
outside edges to make a seal between it and outside wall.
NOTE:
Four wood screws provided should be replaced with ap-
propriate fasteners for stucco, brick, concrete or other types of
sidings
(see
Figure 11
).
Combustible Exterior Wall:
For stucco or wood exteriors, a sid-
ing standoff may be installed between vent cap and exterior wall.
Siding standoff is required if exterior wall is made of vinyl siding
material. Siding standoff prevents excessive heat from damaging
siding materials. Siding material must be cut to accommodate
standoff. Bolt vent cap to standoff. Apply non-hardening mastic
around outside edge of standoff. Position standoff/cap assembly
in the center of 11-1/2" square hole and attach to exterior wall with
provided wood screws
(see
Figure 12, Page 14
).
Siding standoff
must sit flush against exterior fascia material.
6. Connecting Vent Cap with Horizontal Vent Pipe: Slide wall firestop
over vent pipe before connecting horizontal run to vent cap
(see
Figure 13, Page 14
).
Carefully move fireplace, with vent assembly attached, toward wall
and insert vent pipe into horizontal termination. Pipe overlap should
be a minimum of 1-1/4"
(see
Figure 14, Page 14
).
Slide wall firestop against interior wall surface and attach with
screws provided. See
Figure 14, Page 14
, for horizontal termina-
tion details.
Place fireplace into position and shim with noncombustible material
if needed. Nail or screw side flanges to framing to secure unit in
place.
IMPORTANT:
Make sure fireplace is level before securing. If fire-
place is not level it will not work properly.
Figure 9 - Vent Pipe Connections
Figure 10 - Vent Opening Requirements
Figure 11 - Installing Horizontal Vent Cap
(Noncombustible Exterior)
Female Locking
Lugs
Male Slots
Center of
Hole
Vent Opening
Combustible Wall
Vent Opening
Noncombustible Wall
(Framing Detail)
11
1
/
2
" (292 mm) Inside Framing
11
1
/
2
"
(292 mm)
8
1
/
2
"
(216 mm)
11
1
/
2
"
(292 mm)
Wood
Screw
Vent Cap
Apply Mastic
to All Four
Sides
f i r e - p a r t s . c o m
