Desa (V)DVF36TCLP(E) Continued, Vent Pipe Connections, Installing Horizontal Vent Cap

Venting Installation

instructions

Continued

Twist-lock Procedure: The female ends of the pipes and fittings have four locking lugs (in- dentations). These lugs will slide straight into matching slots on the male ends of adjacent pipes and fittings. (All connections must be sealed with high temperature silicone sealant as specified in the second warning statement on page 10.) Push the pipe sections together and twist one section clockwise approximately one-quarter turn until the sections are fully locked. See Figure 14. Note: Horizontal runs of vent must be supported every three feet. Use wall straps for this purpose.

3.Attach vent pipe assembly to the fireplace using twist lock connections. Set fireplace in front of its permanent location to insure minimum clear- ances. Mark the wall for a 10 3/4" square hole (for noncombustible material such as masonry block or concrete, a 8 1/2" diameter hole is acceptable). See Figure 15. The center of the hole should line up with the centerline of the rigid vent pipe. Cut a 10 3/4" x 10 3/4" square hole through combustible exterior wall (8 1/2" diameter hole if noncombustible). Frame as necessary.

Male

Slots

Female

Locking

Lugs

Figure 14 - Vent Pipe Connections

Vent Opening

Combustible Wall	10 3/4" Inside Framing
10 3/4"

103/4"

(Framing

4.Noncombustible Exterior Wall: Apply a bead of non-hardening mastic around the outside edge of the vent cap. Position the vent cap in the center of the hole on the exterior wall with the arrow on the vent cap pointing up. Attach the vent cap with four wood screws provided (see Figure 16). Note: Replace the wood screws with appropriate fasteners for stucco, brick, concrete, or other types of siding.

Combustible Exterior Wall: For vinyl siding, stucco, or wood exteriors, a siding standoff must be installed between the vent cap and exterior wall. The siding standoff prevents excessive heat from damaging siding materials. Siding materials must be cut to accommodate standoff. Bolt the vent cap to the standoff. Apply non-hardening mastic around outside edge of the standoff. Position the standoff/cap assembly in the center of the square hole and attach to exterior wall with wood screws pro- vided (see Figure 17). The siding standoff must sit flush against the exterior fascia material.

Vent Cap

Wood Screw

Figure 16 - Installing Horizontal Vent Cap

(Noncombustible Exterior)

Cut Siding Away to

Fit Standoff

Wood

Standoff Screw

Vent

Cap

Vent Opening

Detail)

Noncombustible Wall

8 1/2"

Figure 15 - Vent Opening Requirements

Screws

Apply Mastic to All Four Sides

Figure 17 - Installing Siding Standoff

(Combustible Exterior Wall)

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