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FLUE TRANSITION
COLLAR
VENT PIPE
(min. 6” length)
“DISCONNECTED VENT”
WARNING
STICKER
VENT CONNECTION UPFLOW
AND HORIZONTAL POSITION
VENT PIPE
(min. 6” length)
“DISCONNECTED VENT”
WARNING
STICKER
FIGURE 15
IMPORTANT
Once the venting system is installed, attach the
“Disconnected Vent” warning sticker to a visible area
of the plenum near the vent pipe. See gure 15. The
warning sticker is provided in the bag assembly. Order
kit 66W04 for additional stickers.
Common Venting Using Metal-Lined Masonry Chimney
4 in. (102 mm)
minimum
MIN. LENGTH -- AS
SHORT AS PRACTICAL
MAX. LENGTH
-- SEE NOTE 1
BELOW.
SEALED
PERMANENTLY
SEALED FIREPLACE
OPENING
EXTERIOR
CHIMNEY WITH
METAL
LINER
VENT CONNECTOR
NOTE 1 - Refer to the provided venting tables for installations. Refer
to the capacity requirements shown in the provided venting tables.
OTHER
APPLIANCE
FURNACE
5 ft. (1.5 m)
minimum
AIR FLOW
FIGURE 16
WARNING
Asphyxiation hazard. The exhaust vent for this furnace
must be securely connected to the furnace ue transition
at all times.
DO NOT insulate the space between the liner and
the chimney wall with pued mica or any other loose
granular insulating material.
IMPORTANT
SINGLE appliance venting of a fan-assisted furnace into
a tile-lined masonry chimney (interior or outside wall)
is PROHIBITED. The chimney must rst be lined with
either type B1 vent or an insulated single wall exible
vent lining system which has been sized according to the
provided venting tables and the vent pipe manufacturer’s
instructions.
A fan-assisted furnace may be commonly vented into an
existing lined masonry chimney if the following conditions
are met:
• The chimney is currently serving at least one draft-
hoodequipped appliance;
• The vent connectors and chimney are sized accord-
ing to the provided venting tables.
If type B1 double- wall vent is used inside a chimney, no
other appliance can be vented into the chimney. The out-
er wall of type B1 vent pipe must not be exposed to ue
products.
A type B1 vent or masonry chimney liner shall terminate
above the roof surface with a listed cap or a listed roof as-
sembly according to the terms of their respective listings
and the vent manufacturer’s instructions.
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 EL180UHNE series units. The chim-
ney passageway must be checked periodically to ensure
that it is clear and free of obstructions.
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