16

VENTING INSTALLATION

Installation for Vertical Termination

VENTING INSTALLATION

Continued

INSTALLATION FOR VERTICAL

TERMINATION

NOTICE: Use rigid pipe only. Flex venting is not to be used with a vertical termination.

1.Determine the route your vertical venting will take. If ceiling joists, roof rafters, or other framing will obstruct the venting system, consider an offset (see Figure 34) to avoid cutting load bearing members. Note: Pay special attention to these installa- tion instructions for required clearances (air space) to combus- tibles when passing through ceilings, walls, roofs, enclosures, attic rafters, etc. Do not pack air spaces with insulation. Also note maximum vertical rise of the venting system and any maxi- mum horizontal offset limitations. Offsets must fall within the parameters shown in Figures 38 through 40, pages 17 and 18.

2.Set the stove in desired location. Drop a plumb line down from the ceiling to the position of the burner system exit flue. Mark the center point where the vent will penetrate the ceiling. Drill a small locating hole at this point.

Drop a plumb line from the inside of the roof to the locating hole in the ceiling. Mark the center point where the vent will penetrate the roof. Drill a small locating hole at this point.

Roof

Flashing

Wall Strap

45° Elbow

Flat Ceiling Installation

1.Cut a 10" (25.4 cm) square hole in the ceiling using the locat- ing hole as a center point. The opening should be framed to 10" x 10" (25.4 cm x 25.4 cm) inside dimensions, as shown in Figure 27 on page 14 using framing lumber the same size as the ceiling joists. If the area above the ceiling is an insu- lated ceiling or a room, nail firestop from the top side. This prevents loose insulation from falling into the required clear- ance space. Otherwise, install firestop below the framed hole. The firestop should be installed with no less than three nails per side (see Figure 35).

2.Assemble the desired lengths of pipe and elbows necessary to reach from the burner system flue up through the firestop. All connections must be sealed with high temperature sili- cone sealant as specified in the second warning statement on page 12. Be sure all pipe and elbow connections are fully twist-locked (see Figure 26, page 13).

3.Cut a hole in the roof using the locating hole as a center point. (Cover any exposed open vent pipes before cutting hole in roof.) The 10" x 10" (25.4 cm x 25.4 cm) hole must be measured on the horizontal; actual length may be larger depending on the pitch of the roof. There must be a 1" (2.54 cm) clearance from the vent pipe to combustible materials. Frame the opening as shown in Figure 27 on page 14.

4.Connect a section of pipe and extend up through the hole.

Note: If an offset is needed to avoid obstructions, you must support the vent pipe every 3 feet (0.91 m). Use wall straps for this purpose (see Figure 34). Whenever possible, use 45° elbows instead of 90° elbows. The 45° elbow offers less re- striction to the flow of the flue gases and intake air.

5.Place the flashing over the pipe section(s) extending through the roof. Secure the base of the flashing to the roof and framing with roofing nails. Be sure roofing material overlaps the top edge of the flashing as shown in Figure 34. There must be a 1" (2.54 cm) clearance from the vent pipe to combustible materials.

If area above is a room, install

If area above is not a

firestop above framed hole.

room, install firestop below

 

framed hole.

Ceiling Firestop

Figure 34 - Offset with Wall Strap and 45° Elbows

Figure 35 - Installing Firestop

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111739-01A

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Desa CSDPBN, CSDBN installation manual Installation for Vertical Termination, Flat Ceiling Installation

CSDBN, CSDPBN specifications

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