Design Dynamics DVF-36S-N Apply Mastic to All Four Sides Vent Cap Wood Screw, See

Venting Installation

Continued

WARNING: Do not recess vent termination into any wall. This will cause a fire hazard.

5.Noncombustible Exterior Wall: Position the horizontal vent cap in the center of the

8 1/2" round hole and attach to the exterior wall with four wood screws provided. Before attaching the vent cap to exterior wall, run a bead of non-hardening mastic

(pliable sealant) around the outside edges to make a seal between it and the outside wall. Note: The four wood screws provided should be replaced with appropriate fas- teners 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 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 stand- off. Apply non-hardening mastic around outside edge of standoff. Position the standoff/cap assembly in the center of the 11 1/2" square hole and attach to exterior wall with wood screws provided (see Fig- ure 11). The siding standoff must sit flush against the exterior fascia material.

6.Combustible Exterior Wall Only: Slide the wall firestop over the vent pipe before connecting horizontal run to vent cap (see Figure 12).

Apply

Mastic to All

Four Sides

Vent Cap

Wood

Screw

Figure 10 - Installing Horizontal Vent Cap

(Noncombustible Exterior)

7.Carefully move fireplace, with vent as- sembly attached, toward wall and insert vent pipe into horizontal termination. The pipe overlap should be a minimum of 1 1/4"

(see Figure 13, page 11).

8.Combustible Exterior Wall Only: Slide wall firestop against interior wall surface and attach with screws provided. See Fig- ure 13, page 11, for horizontal termination details.

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 fire- place is level before securing. If fireplace is not level it will not work properly.

Cut Siding Away to

Fit Standoff

Standoff Wood

Screw

Vent

Cap

Apply Mastic	Screws
to All Four Sides

Figure 11 - Installing Siding Standoff

(Combustible Exterior Wall)

Interior Wall

Surface

Wall

Firestop

Vent Cap (Horizontal Termination)

ScrewHorizontal

Vent Pipe

Figure 12 - Connecting Vent Cap with

Horizontal Vent Pipe

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