INSTALLATION USING MASONRY
OR BRICK CHIMNEY |
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| spacer to the chimney side of the frame. Then insert | |||
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Minimum 3 ½" (89mm) [4" (102mm) nominal] thick | the frame into the opening, | ||||||
studs. Install the wall band in the framing to secure | |||||||
solid bricks are to be used. The fire clay liner (ASTM | |||||||
the chimney section in place. Insert a single section | |||||||
C35 or equivalent), 5/8" (16mm) wall thickness, must | |||||||
of chimney connector into the chimney through the | |||||||
not penetrate into the chimney beyond the inner | |||||||
wall band, being sure it does not protrude into the | |||||||
surface of the chimney flue liner and must be firmly | |||||||
chimney beyond the edge of the chimney flue lining. | |||||||
cemented in place. If it is necessary to cut a hole in | |||||||
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the chimney liner, use extreme care to keep it from | Apply high temperature furnace cement to the end of | ||||||
shattering. Refractory mortar must be used at the | the chimney section and install it over the connector, | ||||||
junction with the chimney liner. After the assembly is | through the wall band, and through the wall spacer. | ||||||
complete, insert the chimney connector into the fire | Tighten the wall band to hold the chimney section firmly | ||||||
clay liner. Do not push it beyond the inside edge of | in place and against the chimney. Install the trim col- | ||||||
the chimney liner, as this will affect the draw of the | lar on the outside of the opening. | ||||||
chimney. |
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| Check to insure there is a 1" (25mm) air space be- | ||||
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B. 6" SOLID PACK CHIMNEY WITH METAL | tween the connector and the chimney section. Also, | ||||||
during installation, always check to insure that a 2" | |||||||
SUPPORTS AS A THIMBLE: |
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| (50mm) air space is being maintained to the wood | |||||
For the method of installation to a masonry chimney | |||||||
framing. Do not fill this space with insulation. Insula- | |||||||
shown in Figures 13 and 14 , it will be necessary to | |||||||
tion in this air space will cause a heat buildup which | |||||||
purchase a 6" (152mm) inside diameter, 12" (305mm) | |||||||
may ignite the wood framing. | |||||||
long section of prefabricated listed solid pack chim- | |||||||
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ney to use as a thimble. Purchase a wall |
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spacer, trim collar and wall band that |
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are manufactured to fit the chimney |
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section you purchase. Cut out a 14 ½" |
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(368mm) diameter opening in the wall. |
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It may be necessary to cut wall studs |
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and install a header and sill frame to |
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maintain the wall support. The hole in |
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the chimney must have at least a 6" |
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(152mm) diameter fire clay liner or |
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equivalent, secured with refractory mor- |
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tar. If it is necessary to cut a hole in the |
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chimney liner, use extreme care to keep |
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it from shattering. |
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The safety features of this system are |
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the 2" (50mm) air space between the |
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chimney section and combustible wall |
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and the 1" (25mm) air space around the |
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chimney connector as it passes through |
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the chimney section to the chimney. The |
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location of the opening through the wall |
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to the chimney must leave a minimum |
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18" (457mm) vertical clearance be- |
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tween the connector pipe and the ceil- |
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ing, to prevent the ceiling from catching |
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fire when using single wall pipe. |
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First, build the frame for the thimble, |
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making sure that it is no smaller than |
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14½" (368mm) diameter, which will |
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maintain a 2" (50mm) air space around | FIGURE 12 |
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the chimney section. Attach the wall |
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