Hearthstone Quality Home Heating Products, Inc ARIES 16/26/46 Series 8905, 8915, 8925
6
Room Volume for Vent Free
CODES
Adhere to all local codes or, in their absence, the latest edition of THE NATIONAL FUEL GAS
CODE ANSI Z223.1 or NFPA54 which can be obtained fr
om…
American National Standards Institute, Inc.
1430 Broadway New York, NY 10018
or
National Fire Protection Association, Inc.
Batterymarch Park Quincy, MA 02269
ADEQUATE COMBUSTION AND VENTILATION AIR
This heater shall not be installed in a confined space or unusually tight construction unless
provisions are provided for adequate combustion and ventilation air.
The National Fuel Gas Code, (ANSI Z223.1/NFPA 54), defines a
confined
space as a space whose
volume is less than 50 cubic feet per 1,000 BTU per hour (4.8 m3 per kw) of the aggregate input
rating of all appliances installed in that space. An
unconfined
space is defined as a space whose
volume is not less than 50 cubic feet per 1,000 BTU per hour (4.8 m3 per kw) of the aggregate input
rating of all appliances installed in that space. Rooms communicating directly with the space in which
the appliances are installed, through openings not furnished with doors, are considered a part of the
unconfined space.
UNUSUALLY TIGHT CONSTRUCTION IS DEFINED AS CONSTRUCTION WHERE
…
walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder
with a rating of 1 perm (6 x 1011 kg per pa-sec-m2) or less with openings gasketed or sealed;
weather stripping has been added on operable windows and doors, and
caulking or sealants are applied to areas such as joints around window and door frames,
between sole plates and floors, between wall-ceiling joints, between wall panels, at
penetrations for plumbing, electrical, and gas lines, and at other openings.
WARNING:
This heater shall not be installed in a room or space unless the required volume of indoor
combustion air is provided by the method described in the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, the International Fuel Gas Code, or applicable local codes.
