Masonry Chimney Venting - International comfort products N8MPN Installation Instructions Manual

7. Masonry Chimney Venting

Chimney Inspection
All masonry chimney construction must conform to Standard
ANSI/NFPA 211!2006 and to any state or local codes applicable.
The chimney must be in good condition and a complete chimney
inspection must be conducted prior to furnace installation. If the
inspection reveals damage or abnormal conditions, make
necessary repairs or seek expert help. See Figure 11 "The
Chimney Inspection Chart". Measure inside area of tile!liner and
exact height of chimney from the top of the chimney to the highest
appliance flue collar or drafthood outlet.
Connector Type
To reduce flue gas heat loss and the chance of condensate
problems, the vent connector must be double!wall Type B vent.
Venting Restrictions for Chimney Types
Interior Chimney ! has no sides exposed to the outdoors below
the roofline. All installations can be single furnace or common
vented with another draft hood equipped Category I appliance.
Exterior Chimney ! has one or more sides exposed to the
outdoors below the roof line. All installations with a 99% Winter
Design Temperature* below 17°F(!8°C) must be common vented
only with a draft hood equipped Category I appliance.
* The 99% Winter Design Dry!Bulb (db) temperatures are
found in the 2005 ASHRAE Fundamentals Handbook CD
and Chapter 28.
WARNING
!
CARBON MONOXIDE POISONING, FIRE AND
EXPLOSION HAZARD
Failure to follow this warning could result in
personal injury, death, and/or property damage.
These furnaces are CSA (formerly AGA and CGA)
design!certified for
tile!lined masonry chimneys with a factory
accessory Chimney Adapter Kit.
furnace rating plate for correct kit usage.
Chimney Adapter Kits are for use with ONLY
furnaces having a Chimney Adapter Kit number
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.
441 01 2613 05
venting into exterior clay
Refer to the
The
Specifications are subject to change without notice
Subject to change without notice.
Chimneys shall conform to the Standard for Chimneys,
Fireplaces, Vents, and Solid Fuel Burning Appliances ANSI/NFPA
211!2006 in the United States and to a Provincial or Territorial
Building Code in Canada (in its absence, the National Building
Code of Canada) and must be in good condition.
U.S.A.!Refer to Sections 13.1.9 or 13.2.22 of the ANSI
Z223.1/NFPA 54!2009 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 ANSI Z223.1/NFPA 54!2009, 13.1.9 and 13.2.22
regarding alternative venting design and the exception, which
cover installations such as the Chimney Adapter Kits
NAHA001DH and NAHA002DH.
The Chimney Adapter Kits are listed alternative venting designs
for these furnaces. See the kit instructions for complete details.
Canada (and U.S.A.)!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 A, and
4. The input rating of each space!heating appliance is greater
than the minimum input rating given in Table B for Masonry
Chimneys for the local 99% Winter Design Temperature.
Chimneys having internal areas greater than 38 square
inches (245 sq. cm) require furnace input ratings greater
than the input ratings of these furnaces. See footnote at
bottom of Table B, 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 a
furnace listed for use with the kit, a listed chimney!lining system,
or a Type!B vent.
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 listed alternative venting designs
and are for use with ONLY furnaces having a Chimney Adapter Kit
number marked on the furnace rating plate.
National Excelsior Company
www.excelsiorhvac.com
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