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20 69D0023
HOT
HOT
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 flue. Attach the vent cap with four wood
screws supplied. See Figure 17.
WARNING
Do not recess vent
termination into any wall.
This will cause a fire hazard.
NOTE: Replace the wood screws with appropriate
fasteners for stucco, brick, concrete, or other types
of siding.
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
Monessen 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. Monessen termination does not require a standoff. Apply non-hardening mastic around outside edge of the
standoff instead of the vent cap assembly. See Figure 18.
5. Slide the firestop over the vent pipe before connecting the horizontal run to the vent cap. See Figure 19.
6. The termination should overlap the flue a minimum of 1
1
/4" Apply silicone to the outer pipe/termination connection.
Fasten termination with screws provided.
7. Slide the firestop against the interior wall surface and attach with screws. See Figure 19.