Desa CD36TN-M - Manual (Page 12)

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VENTING INSTALLATION
INSTRUCTIONS
Continued
WARNING: Do not recess
vent termination into any wall.
This will cause a fire hazard.
6.
Combustible Exterior Wall:
For vinyl siding,
stucco or wood exteriors, a siding standoff
may be installed between the vent cap and
exterior wall. The siding standoff prevents
excessive heat from damaging the siding
materials. Siding material must be cut to
accommodate standoff. Bolt the vent cap
to the standoff. Apply nonhardening mastic
around outside edge of standoff. Position the
standoff/cap assembly in the center of the
10 3 /
4
" square hole and attach to exterior wall
with wood screws provided (see Figure 12).
The siding standoff must sit flush against the
exterior fascia material.
7.
Combustible Exterior Wall Only:
Fit the outer
and inner wall firestop into wall before connect-
ing horizontal run to vent cap (see Figure 13).
8. Carefully move fireplace, with vent assembly
attached, toward wall and insert vent pipe
into horizontal termination. The pipe overlap
should be a minimum of 1 1 /
4
".
9. 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 fireplace is not level
it will not work properly.
Figure 12 - Installing Siding Standoff
(Combustible Exterior Wall)
Cut Siding Away
to Fit Standoff
Screws
Standoff
Vent
Cap
Apply Mastic
to All Four Sides
Figure 13 - Installing Outer Wall Firestop
(Combustible Exterior Wall)
Inner Wall
Firestop
Inner Wall
Firestop
Outer Wall
Firestop
NOTICE: Do not seal termination
cap to vent pipe. Cap must be
removable for vent inspection
and maintenance.
WARNING: Never run vent
downward as this may cause
excessive temperatures which
could cause a fire. Operation of
improperly installed and main-
tained venting system could
result in serious injury, property
damage or loss of life.