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Resumen del manual
It will be necessary to cut wall studs and install a header and sill frame to maintain proper dimensions and to hold the weight of the brick (Figure 11). 10 INSTALLATION USING MASONRY OR BRICK CHIMNEY Minimum 3 %" (89mm) [4" (102mm) nominal] thick solid bricks are to be used. The fire clay liner (ASTM C35 or equivalent), 5/8" (16mm) wall thickness, must not penetrate into the chimney beyond the inner surface of the chimney flue liner and must be firmly cemented in place. If it is necessary to cut a hole in the chimney liner, use extreme care to keep it from shattering. Refractory mortar must be used at the junction with the chimney liner. After the assembly is complete, insert the chimney connector into the fire clay liner. Do not push it beyond the inside edge of the chimney liner, as this will affect the draw of the chimney. B. 6" SOLID PACK CHIMNEY WITH METAL SUPPORTS AS A THIMBLE: For the method of installation to a masonry chimney shown in Figures 13 and 14 , it will be necessary to purchase a 6" (152mm) inside diameter, 12" (305mm) long section of prefabricated listed solid pack chimney to use as a thimble. Purchase a wall spacer, trim collar and wall band that are manufactured to fit the chimney section you purchase. Cut out a 14 %" (368mm) diameter opening in the wall. It may be necessary to cut wall studs and install a header and sill frame to maintain the wall support. The hole in the chimney must have at least a 6" (152mm) diameter fire clay liner or equivalent, secured with refractory mortar. If it is necessary to cut a hole in the chimney liner, use extreme care to keep it from shattering. The safety features of this system are the 2" (50mm) air space between the chimney section and combustible wall and the 1" (25mm) air space around the chimney connector as it passes through the chimney section to the chimney. The location of the opening through the wall to the chimney must leave a minimum 18" (457mm) vertical clearance between the connector pipe and the ceiling, to prevent the ceiling from catching fire when using single wall pipe. spacer to the chimney side of the frame. Then insert the frame into the opening, toe-nailing it to the wall studs. Install the wall band in the framing to secure the chimney section in place. Insert a single section of chimney connector into the chimney through the wall band, being sure it does not protrude into the chimney beyond the edge of the chimney flue lining. Apply high temperature furnace cement to the end of the chimney section and install it over the connector, through the wall band, and through the wall spacer. Tighten the wall band to hold the chimney section firmly in place and against the chimney. Install the trim collar on the outside of the opening. Check to insure there is a 1" (25mm) air space between the connector and the chimney section. Also, during installation, always check to insure that a 2" (50mm) air space is being maintained to the wood framing. Do not fill this space with insulation. Insulation in this air space will cause a heat buildup which may ignite the wood framing. First, build the frame for the thimble, making sure that it is no smaller than 14%" (368mm) diameter, which will maintain a 2" (50mm) air space around the chimney section. Attach the wall ii Minimum Chimney Clearance to Wail Spacer and Combustibles 2 Inches Fireclay ■" Liner or Equivalent J is: Minimum Clearance 2 Inches 1 Inch Air Space ^ttt^I ^To Chimney Section 3 Chimney Connector Chimney Section FIGURE 13 Trim Collar Wall Band Wall Spacer Masonry Chimney Constructed to NFPA 211 12 CONNECTION TO A METAL PREFABRICATED CHIMNEY When a metal prefabricated chimney is used, the manufacturer’s installation instructions must be followed precisely. You must also purchase (from the same manufacturer) and install the ceiling support package or wall pass-through and “T” section package, firestops (where needed), insulation shield, roof flashing, chimney cap, etc. Maintain the proper clearance to the structure as recommended by the manufacturer. This clearance is usually a minimum of 2" (SOmm), although it may vary by manufacturer or for certain components. There are basically two methods of metal chimney installation. One method is to install the chimney inside the residence through the ceiling and the roof (Figure IS). The other method is to install an exterior chimney that runs up the outside of the residence (Figure 16). This method of installation requires at a minimum a wall pass-through device, a wall support package, insulated “T” section and roof flashing. The components illustrated may not look exactly like the system you purchase, but they demonstrate the basic components you will need for a proper and safe installation. The chimney must be the required height above the roof or other obstruction for safety and proper draft operation. The chimney must be a minimum of 3' (914mm) higher than the highest point where it passes through the ro...
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