507651-01
Issue 1907
Page 13 of 32
Venting Using a Masonry Chimney
The following additional requirements apply when a lined
masonry chimney is used to vent this furnace.
•
Masonry chimneys used to vent Category I central
furnaces must be either tile lined or lined with a listed
metal lining system or dedicated gas vent. Unlined
masonry chimneys are prohibited. See Figure 15 and
•
A chimney with one or more sides exposed to the
outside of the structure is considered to be an exterior
chimney.
•
An exterior masonry chimney that is not tile lined must
be lined with B1 vent or a listed insulated flexible metal
vent. An exterior tile lined chimney that is sealed and
capped may be lined with a listed uninsulated flexible
metal vent.
•
If the existing chimney will not accommodate a
listed metal liner, either the chimney must be rebuilt
to accommodate one of these liners or an alternate
approved venting method must be found.
•
Insulation for the flexible vent pipe must be an
encapsulated fiberglass sleeve recommended by the
flexible vent pipe manufacturer.
Refer to the tables and the venting information contained
in these instructions to properly size and install the venting
system.
Once the venting system is installed, attach the
“Disconnected Vent” warning sticker to a visible area
of the plenum near the vent pipe. See Figure 16. The
warning sticker is provided in the bag assembly. Order
kit 66W04 for additional stickers.
IMPORTANT
Figure 15.
Common Venting Using Metal-Lined
Masonry Chimney
NOTE:
Refer to the provided venting tables for installations.
Refer to the capacity requirements shown in the provided
venting tables.
Asphyxiation hazard. The exhaust vent for this furnace
must be securely connected to the furnace flue transition
at all times.
WARNING
DO NOT
insulate the space between the liner and the
chimney wall with puffed mica or any other loose granular
insulating material.
SINGLE appliance venting of a fan assisted furnace into
a tile lined masonry chimney (interior or outside wall) is
prohibited. The chimney must first be lined with either
type B1 vent or an insulated single wall flexible vent
lining system which has been sized according to the
provided venting tables and the vent pipe manufacturer’s
instructions.
IMPORTANT
FLUE TRANSITION
COLLAR
VENT PIPE
(min. 6” length)
“DISCONNECTED VENT”
WARNING
STICKER
FLUE
TRANSITION
COLLAR
VENT PIPE
(min. 6” length)
“DISCONNECTED VENT”
WARNING
STICKER
Figure 16.
Vent Connection Upflow and Horizontal Position
