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Resumen del manual
20' max. The following configurations show the minimum vertical rise requirements for a horizontal system using two 90° elbows. 45° Elbow Figure 17 - Horizontal Termination Configuration for Venting Using Two 90° Elbows 116647-01A 12 VENTING INSTALLATION INSTRUCTIONS Installation Planning (Cont.) Installation for Vertical Termination VENTING INSTALLATION INSTRUCTIONS Figure 18 - Horizontal Termination Configuration for Venting Using Two 90° Elbows with Termination at 90° with Fireplace Continued Venting with Two 90° Elbows Horizontal (H1) + Vertical (V) Horizontal (H2) 5' min. 6' max. 6' min. 12' max. 7' min. 18' max. 8' min. 20' max. 20' max. 20' max. 45° Elbow INSTALLATION FOR VERTICAL TERMINATION Note: Vertical restrictor must be installed in all vertical installations. 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 19) to avoid cutting load bearing members. Note: Pay special attention to these installation instructions for required clearances (air space) to combustibles 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 maximum horizontal offset limitations. 2. Set the fireplace in desired location. Drop a plumb line down from the ceiling to the position of the fireplace 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 Ceiling Firestop Figure 19 - Offset with Wall Strap and 45° Elbows 116647-01A VENTING INSTALLATION INSTRUCTIONS Installation for Vertical Termination (Cont.) 13 VENTING INSTALLATION INSTRUCTIONS Continued Flat Ceiling Installation 1. Cut a 10 3/4" square hole in the ceiling using the locating hole asa center point. The opening should be framed to 10 3/4"x10 3/4" (273 mm x 273 mm) inside dimensions, as shown in Figure 9 on page 8 using framing lumber the same size as the ceiling joists. If the area above the ceiling is an insulated ceiling or a room, nail firestop from the top side. This prevents loose insulation from falling into the required clearance space. Otherwise, install firestop below the framed hole. The firestop should be installed with no less than three nails per side (see Figure 20). 2. Assemble the desired lengths of pipe and elbows necessary to reach from the fireplace flue up through the firestop. Be sure all pipe and elbow connections are fully twist-locked (see Figure 8, page 8). 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 3/4"x10 3/4" hole must be measured on the horizontal; actual length may be larger depending on the pitch of the roof. There must be a 1" clearance from the vent pipe to combustiblematerials. Frame the opening as shown in Figure 9, page 8. 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. Use wall straps for this purpose (see Figure 19, page 12). Whenever possible, use 45° elbows instead of 90° elbows. The 45° elbow offers less restriction 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 19, page 12. There must be a 1" clearance from the vent pipe to combustible materials. 6. Continue to add pipe sections until the height of the vent cap meets the minimum building code requirements described in Figure 7 on page 6. Note: You must increase vent height for steep roof pitches. Nearby trees, adjoining rooflines, steep pitched roofs and other similar factors may cause poor draft or down-drafting in high winds. Increasing the vent height may solve this problem. If area above is a room or If area above is not a room, install insulated area, install firestop firestop below framed hole. above framed hole. 7. Twist-lock the vent cap onto the last section of vent pipe. Note: If the vent pipe passes through any occupied areas above the first floor, including storage spaces and closets, you must enclose pipe. You may frame and sheetrock the enclosure with standard construction material. Make sure and meet the minimum allowable clearances to combustibles. Do not fill any of the required air spaces with insulation. Vertical Termination Configurations Figures 21 through 24 show four different configurations for vertical termination. Figure 21 -Vertical Venting Configuration Us...