Common Venting Using Tile−Lined Interior Masonry Chimney and Combined Vent Connector
NOTE− Refer to provided venting
tables for installations.
MINIMUM LENGTH = AS SHORT AS PRACTICAL. FOR MAXIMUM LENGTH SEE NOTE TO LEFT
VENT
CONNECTOR
OTHER
APPLIANCE
INTERIOR TILE−LINED
MASONRY CHIMNEY
NOTE − the chimney must be properly sized per provided venting tables or lined with listed metal lining system.
PERMANENTLY
SEALED FIREPLACE
OPENING
FURNACE
FIGURE 15
DO NOT insulate the space between the liner and the chimney wall with puffed mica or any other loose gran- ular insulating material
IMPORTANT
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5 ft. (1.5 m) |
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MIN. LENGTH −− AS |
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VENT CONNECTOR
4 in. (102 mm) minimum
FURNACE
OTHER
APPLIANCE
NOTE 1 − Refer to the provided venting tables for installations.
FIGURE 16
SINGLE appliance venting of a
A fan−assisted furnace may be commonly vented into an existing lined masonry chimney if the following conditions are met:
SThe chimney is currently serving at least one drafthood equipped appliance
SThe vent connectors and chimney are sized according to the provided venting tables.
If type B1
When inspection reveals that an existing chimney is not safe for the intended purpose, it shall be rebuilt to conform to nationally recognized standards, lined or relined with suitable materials, or replaced with a gas vent or chimney suitable for venting EL280DF series units. The chimney passageway must be checked periodically to ensure that it is clear and free of obstructions.
Do not install a manual damper, barometric draft regulator, or flue restrictor between the furnace and the chimney.
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