FMI PFS DVF42NH-HA - Manual (Page 12)

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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 appropriate fasteners for
stucco, brick, concrete or other types of
sidings (see Figure 10).
Combustible Exterior Wall: For vinyl
siding, stucco or wood exteriors, a siding
standoff may be installed between vent
cap and exterior wall. 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 11). 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 12).
Figure 10 - Installing Horizontal Vent Cap
(Noncombustible Exterior)
Wood
Screw
Vent Cap
Figure 11 - Installing Siding Standoff
(Combustible Exterior Wall)
Cut Siding Away to
Fit Standoff
Wood
Screw
Screws
Standoff
Vent
Cap
Apply Mastic
to All Four Sides
Vent Cap
(Horizontal
Termination)
Interior Wall
Surface
Wall
Firestop
Horizontal
Vent Pipe
Figure 12 - Connecting Vent Cap with
Horizontal Vent Pipe
Screw
Apply
Mastic to All
Four Sides
Carefully move fireplace, with vent as-
sembly attached, toward wall and insert
vent pipe into horizontal termination. Pipe
overlap should be a minimum of 1 1 /
4
" (see
Figure 13, page 13).
Slide wall firestop against interior wall
surface and attach with screws provided.
See Figure 13, page 13, for horizontal
termination 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 fire-
place is level before securing. If fireplace
is not level it will not work properly.