Masonry Chimney Requirements - Carrier 58CVA Installation, Start-Up, Operating And Service And Maintenance Instructions

than 17 percent to minimize the potential for condensation in the
venting system. These furnaces are approved for common venting
and multi-story venting with other fan assisted or draft hood
equipped appliances in accordance with the NFCG or the NSC-
NGPIC.
The following information and warning must be considered in
addition to the requirements defined in the NFGC and the
NSCNGPIC.
Do not bypass the draft safeguard switch, as an unsafe
condition could exist which must be corrected. Failure to
follow this warning could result in a build-up of carbon
monoxide and lead to personal injury or death.
1. If a vent (common or dedicated) becomes blocked, the furnace
will be shut off by the draft safeguard switch located on the
vent elbow.
2. Two-stage furnaces require Type B vent connectors outside
the casing in all configurations. Single wall vent connector
may be used inside the furnace casing with the transition to
Type B vent outside the furnace casing. Size the connector so
that the minimum vent connector capacity is lower than the
low fire rate of the furnace and the maximum vent connector
capacity is higher than the furnace high fire rate.
3. Do not connect this appliance to a single wall dedicated or
common vent. The dedicated or common vent is considered to
be the vertical portion of the vent system that terminates
outdoors.
4. Vent connectors serving Category I furnaces shall not be
connected into any portion of a mechanical draft system
operating under positive pressure.
5. In the US: Do not vent this appliance with any solid fuel
burning appliance. In Canada, check with the authority having
jurisdiction for approval on use with solid fuel burning
appliance.
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6. Category I furnaces must be vented vertically or nearly
vertically unless equipped with a listed power ventor.
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7. Do not vent this appliance into an unlined masonry chimney.
Refer to Chimney Inspection Chart, Fig. 32.

MASONRY CHIMNEY REQUIREMENTS

These furnaces are CSA design-certified for use in exterior
tile-lined masonry chimneys with a factory accessory Chim-
ney 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 Soild Fuel Burning Appliances ANSI/NFPA 211-2000
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 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 NFGC, 13.2.20 regarding alternative venting
design and the exception, which cover installations such as our
Chimney Adapter Kits KGACA02014FC and KGACA02015FC,
which are listed for use with these furnaces.
The Chimney Adapter Kit is a listed alternative venting system for
these furnaces. See the kit instructions for complete details.
Canada-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 the local
winter design temperature. Chimneys having internal areas
greater than 38 square inches 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 common vent.
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