Mastic Spark Modern Fires 91P - Manual (Page 18)

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HO
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VENT INSTALLATION
4. Apply a bead of non-hardening mastic around the outside
edge of vent cap. Position the vent cap in the center of hole
on the exterior wall with the
arrow up on the vent cap .
Insure proper clearance of 1" to combustibles is main-
tained. Attach the vent cap with four wood screws supplied.
See Figure 14.
NOTE: Replace the wood screws with appropriate fasteners
for stucco, brick, concrete, or other types of siding.
For vinyl siding, stucco, or wood exterior use vinyl siding stand-
offs between vent cap and exterior wall. The vinyl siding standoff
prevents excessive heat from melting the vinyl siding material. Bolt
the vent cap to the standoff. Apply non-hardening mastic around
outside edge of the standoff instead of the vent cap assembly. Use
wood screws provided to attach the standoff. See Figure 15.
5. Slide the wall thimble over the vent pipe before connecting
the horizontal run to the vent cap. See Figure 16.
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.
7. Slide the wall thimble against the interior wall surface and
attach with srews. See Figure 16.
Figure 14 - Installing Horizontal Vent Cap
REAR WALL VENT INSTALLATION (continued)
Figure 15 - Installing Vinyl Siding Standoff
Apply Mastic
to All Four
Sides
Vent Cap
Wood
Screw
Cut Vinyl Siding Away to
Fit Standoff
Wood Screw
Vent Cap
Bolt
Apply Mastic to All
Four Sides
Nut
Standoff
Figure 16 - Connecting Vent Cap with Horizontal Vent Pipe
Interior Wall
Surface
Decorative
Wall Thimble
Horizontal
Vent Pipe
Screw
Vent Cap
(Horizontal
Termination)
Deflecting Shield
Do not recess vent termination into any wall.
This will cause a fire hazard.
WARNING
S