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Ensure that the Masonry chimney
meets all National Fire Protection
Association and local building codes.
Have the chimney cleaned and
inspected by a professional to ensure
there are no cracks, weak mortar or
other signs of deterioration. See vent
manufactuer's installation instructions
for further information
Minimum Ceiling
Height 7' (2.1 m)
Combustibles
in front of the
unit
* 4"(102mm) diameter air inlet with rodent screen
* If the crawl space is well ventilated it is not necessary
to extend air inlet to outside
Figure 6: T4 Venting to a masonry chimney.
100003978
56" (1.42m)
Minimum
48"
(1219 mm)
Non-combustible
Ember Protector
Fireclay Flue Liner
Concrete Cap
Chimney
Chimney
Connector
18
6" S.S. liner
Approved Through
Wall Installation
Hooded vent or 90°
elbow turned down.
ALT 4-LE 040523-28
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