20 69D0023
CDV Series Gas Fireplace
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 word “UP”
on the vent cap facing up. Insure proper clearance of
1" to combustibles is maintained to the ue. Attach
the vent cap with four wood screws supplied. Figure
17
Figure 17 -
Installing Horizontal Termination
REAR WALL VENT INSTALLATION (continued)
Figure 18 -
Installing Simpson Vinyl Siding Standoff
and Termination
Apply
Mastic to
All Four
Sides
Vent Cap
Wood
Screw
Cut Vinyl Siding
Away to Fit Standoff
Wood Screw
Termination
Bolt
Apply Mastic to
All Four Sides
Nut
Standoff #950 or 4DT-VS
(not required for
MHSC Termination)
Figure 19 -
Installing Firestop on Horizontal Vent Pipe
Interior Wall
Surface
Firestop
Horizontal
Vent Pipe
Screw
Vent Cap
(Horizontal
Termination)
A vinyl siding standoff must be used with the Simpson or Silkirk Horizontal Termination on vinyl, stucco or wood-
clad exterior walls. MHSC termination does not require a standoff. Apply non-hardening mastic around outside
edge of the standoff instead of the vent cap assembly. Figure 18
5. Slide the restop over the vent pipe before connecting the horizontal run to the vent cap. Figure 19
6. The termination should overlap the ue a minimum of 1
1
/4" Apply silicone to the outer pipe/termination con-
nection. Fasten termination with screws provided.
7. Slide the restop against the interior wall surface and attach with screws. Figure 19
WARNING
Do not recess vent
NOTE: Replace the wood screws with appropriate
fasteners for stucco, brick, concrete, or other types
of siding.
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