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Resumen del manual
(32 mm). Effective length is built into this chart. Heatilator • A36R & A42R • 28376 • Rev AF • 11/08 C. Assembling Chimney Sections D. Install Chimney Air Kit WARNING! Risk of Fire! DO NOT install substitute or • Required in Canada. damaged chimney components. • Follow instructions provided with this accessory. • Use only those components described in this manual. Substitute or damaged chimney components could impair E. Installing Ceiling Firestops safe operation and cause overheating and fire. • Support the pipe during construction and check to be sure inadvertent loading has not dislodged the chimney section from the fireplace or at any chimney joint. • Attach a straight chimney section or an offset to the top of the fireplace. • Place inner flue to the inside of the chimney section below it. Place the outer casing outside the outer casing of the chimney section below it. Refer to Figure 8.4. NOTICE: Chimney sections cannot be disassembled once locked together. Plan ahead! • Lock chimney sections and/or offsets/returns together by pushing downward until the top section meets the stop bead on the lower section. • Pull on the top section to make sure it is fully engaged and will not separate. • You may use #6 or #8 sheet metal screws no longer than 1/2 in. (13 mm) to fasten chimney sections together. Do not penetrate inner flue. WARNING! Risk of Fire! You MUST use screws (provided) to fasten offset/returns to chimney sections to keep the chimney parts from twisting. Failure to do so could cause fire. • Fasten offset/returns to chimney sections. Insert the screws (provided) through the predrilled holes. Do not penetrate inner flue. • Secure chimney returns with hanger straps provided; fasten to studs or joists. • Vertical straight runs of chimney must be supported every 35 ft (10.7 m). CAUTION! Risk of Fire! Ceiling firestops must be used whenever the chimney penetrates a ceiling/fl oor. • Chase construction requires ceiling fi restops at each floor or every 10 ft (3.05 m) of clear space. • The ceiling firestop slows spread of fire and reduces cold air infiltration. • Install a ceiling firestop whenever chimney penetrates ceiling/fl oor. • Mark and cut an opening in ceiling as shown in Figure 8.5. • Frame the opening with the same size lumber used in the ceiling joists. • Nail the ceiling firestop to the bottom of the ceiling joists when there is a room above. • Use an attic insulation shield if the ceiling is insulated. The ceiling firestop may then be attached above or below the joists. WARNING! Risk of Fire! DO NOT seal area between firestop opening and chimney pipe. Restricting air flow around chimney may cause fire. 27 ROOM ABOVE (non-insulated ceiling) ATTIC ABOVE (insulated ceiling) B A Ceilng firestop from bottom Ceiling firestop from top Note: Use same dimensional lumber for framing ceiling firestop and joists. Figure 8.5 Installing the Ceiling Firestop Catalog # A B Anglein. mm in. mm FS338 14-1/2 368 14-1/2 368 0° FS339 14-1/2 368 18-3/8 467 15° FS340 14-1/2 368 23 584 30° Figure 8.4 Assembling Chimney Sections Heatilator • A36R & A42R • 28376 • Rev AF • 11/08 F. Installing Attic Insulation Shield WARNING! Risk of Fire! You MUST install an attic insulation shield when there is any possibility of insulation or other combustible material coming into contact with the chimney. • DO NOT pack insulation between the chimney and the attic insulation shield. • Failure to keep insulation and other materials away from chimney pipe could cause fire. • DO NOT offset chimney inside insulation shield. Installation of a ceiling firestop is required • Refer to Figures 8.6 -8.8. • Roll the shield (around the chimney if already installed) until you have a 3 in. (76 mm) overlap and the three holes on each side match up (large holes on top). • Insert three screws into the matching holes to form a tube. • Bend three tabs on the bottom of the tube inward to 90° to maintain chimney air space as shown in Figure 8.6. • Rest the insulation shield on the ceiling fi restop below. • Bend the three short tabs at the top of the shield inward to 90° to maintain the 2 in. (51 mm) air space from the chimney. • Bend the remaining top tabs to just meet the pipe. If you wish to make a custom shield or barrier, follow these guidelines: • Metal is preferred, although any material stiff enough to hold back the insulation can be used. WARNING! Risk of Fire! Use of cardboard or other materials that can deflect under humidity or other environmental conditions is not recommended. • The shield or barrier must be tall enough to extend above the insulation and prevent blown-in insulation from spilling into the cavity. • Maintain specified air spaces around chimney. • Check instructions and local codes for further details. 3 in. (76 mm) overlap Insert three screws Bend inward 90° Bend remaining tabs to rest against pipe to prevent insulation from falling in. Figure 8.6 Prepare Attic Insulation Shield 6 Tabs bent in 90° Tabs bent in to rest agai...
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