Masonry Chimney Requirements - International comfort products N8MSN Installation Instructions Manual

4. Do not vent this appliance with any solid fuel burning
appliance.
5. Category I furnaces must be vented vertically or nearly
vertically unless equipped with a listed power venter.
6. Do not vent this appliance into an unlined masonry
chimney. Refer to Chimney Inspection Chart.

MASONRY CHIMNEY REQUIREMENTS

NOTE: These furnaces are CSA design−certified for use in
exterior clay tile−lined masonry chimneys with a factory
accessory Chimney Adapter Kit. Refer to the furnace rating
plate for correct kit usage. The Chimney Adapter Kits are for
use with ONLY furnaces having a Chimney Adapter Kit
numbers marked on the furnace rating plate.
If a clay tile−lined masonry chimney is being used and it is
exposed to the outdoors below the roof line, relining might be
required. Chimneys shall conform to the Standard for
Chimneys, Fireplaces, Vents, and Solid Fuel Burning
Appliances ANSI/NFPA 211−2009 and must be in good
condition.
U.S.A.−Refer to NFPA 54/ANSI Z223.1−2009 Sections 13.1.8
and 13.2.20 of the NFGC or the authority having jurisdiction
to determine whether relining is required. If relining is
required, use a properly sized listed metal liner, Type−B vent,
or a listed alternative venting design.
NOTE: See the NFPA 54 / ANSI Z223.1−2009, 13.1.8 and
13.2.20 regarding alternative venting design and the
Exception, which cover installations such as the Chimney
Adapter Kits, which are listed for use with these furnaces.
The Chimney Adapter Kit is listed alternative venting system
for these furnaces. See the kit instructions for complete
details.
This furnace is permitted to be vented into a clay tile−lined
masonry chimney that is exposed to the outdoors below the
roof line, provided:
1. Vent connector is Type−B double−wall, and
2. This furnace is common vented with at least 1 draft
hood equipped appliance, and
3. The combined appliance input rating is less than the
maximum capacity given in Table 8 , and
4. The input rating of each space heating appliance is
greater than the minimum input rating given in Table 9
24
for the local 99% Winter Design Temperature. Chim-
neys having internal areas greater than 38 in
2)
mm require furnace input ratings greater than the in-
put ratings of these furnaces. See footnote at bottom of
Table 9, and
5. The authority having jurisdiction approves.
If all of these conditions cannot be met, an alternative venting
design shall be used, such as the listed chimney adapter kit
with these furnaces, which are listed for use with the kit, a
listed chimney−lining system, or a Type−B common vent.
Inspections before the sale and at the time of installation will
determine the acceptability of the chimney or the need for
repair and/or (re)lining. Refer to the Chimney Inspection Chart
to perform a chimney inspection. If the inspection of a
previously used tile−lined chimney:
a. Shows signs of vent gas condensation, the chim-
ney should be relined in accordance with local
codes and the authority having jurisdiction. The
chimney should be relined with a listed metal liner,
Type−B vent, or a listed chimney adapter kit shall
be used to reduce condensation. If a condensate
drain is required by local code, refer to the NFPA 54
/ ANSI Z223.1−2009, Section 12.10 for additional
information on condensate drains.
b. Indicates the chimney exceeds the maximum per-
missible size in the tables, the chimney should be
rebuilt or relined to conform to the requirements of
the equipment being installed and the authority hav-
ing jurisdiction.
A chimney without a clay tile liner, which is otherwise in good
condition, shall be rebuilt to conform to ANSI/NFPA 211 or be
lined with a UL listed metal liner or UL listed Type−B vent.
Relining with a listed metal liner or Type−B vent is considered
to be a vent−in−a−chase.
If a metal liner or Type−B vent is used to line a chimney, no
other appliance shall be vented into the annular space
between the chimney and the metal liner.
2
(24516
441 01 1402 02