Category I Venting (Vertical Venting) - Amana 10759833 Installation Instructions Manual

Category I Venting (Vertical Venting)

To prevent possible death or personal injury due to asphyxiation, this Non-Condensing Gas Fired Warm Air
Furnace must be Category I vented. Do not vent using Category III venting.
Category I Venting is venting at a non-positive pressure. A furnace vented as Category I is considered a fan-assisted
appliance and the vent system does not have to be "gas tight." NOTE: Single stage gas furnaces with induced draft
blowers draw products of combustion through a heat exchanger allowing, in some instances, common venting
with natural draft appliances (i.e. water heaters).
All installations must be vented in accordance with National Fuel Gas Code NFPA 54/ANSI Z223.1 - latest edition. In
Canada, the furnaces must be vented in accordance with the National Standard of Canada, CAN/CSA B149.1 and CAN/
CSA B149.2 - latest editions and amendments.
NOTE: The vertical height of the Category I venting system must be at least as great as the horizontal length of the venting
system.
To prevent possible death or personal injury due to asphyxiation, common venting with other manufacturer's
induced draft appliances is not allowed.
Common venting of this furnace is allowed with the addition of a common vent kit (CVK) for each appliance. Contact the
local installing dealer, distributor or us directly for more information.
The minimum vent diameter for the Category I venting system is as shown below:
Under some conditions, larger vents than those shown above may be required or allowed.
When an existing furnace is removed from a venting system serving other appliances, the venting system may be too large
to properly vent the remaining attached appliances.
WARNING
WARNING
MINIMUM VENT
MODEL
DIAMETER
70 4 Inch
90 4 Inch
115 5 Inch
140 5 Inch
13 13