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a.) A carbon monoxide (CO) detector and
alarm shall be placed on each fl oor
level where there are bedrooms. The
detector shall comply with NFPA 720
(2005 Edition) and be mounted in the
living area outside the bedroom(s).
b.) A (CO) detector shall be located in
the room that houses the appliance or
equipment and shall:
• Be powered by the same electrical
circuit as the appliance or equipment.
Only one service switch shall power
the appliance and the (CO) detector;
• Have battery back-up power;
• Meet ANSI/UL 2034 Standards
and comply with NFPA 720 (2005
Edition); and Approved and listed
by a Nationally Recognized Testing
Laboratory as recognized under 527
CMR.
c.) A Product-approved vent terminal must
be used, and if applicable, a product-
approved air intake must be used.
Installation shall be in strict compliance
with the manufacturer’s instructions. A
copy of the installation instructions shall
remain with the appliance or equipment
at the completion of the installation.
d.) A metal or plastic identifi cation plate shall
be mounted at the exterior of the building,
4 feet directly above the location of vent
terminal. The plate shall be of suffi cient
size, easily read from a distance of eight
feet away, and read “Gas Vent Directly
Below”.
2. For direct-vent appliances, mechanical
vent heating appliances or domestic hot
water equipment where the bottom of the
vent terminal and the air intake is installed
above four feet above grade the following
requirements must be satisfi ed:
a.) A (CO) detector and alarm shall be
placed on each fl oor level where there
are bedrooms. The detector shall comply
with NFPA 720 (2005 Edition) and be
mounted in the living area outside the
bedroom(s).
b.) The (CO) detector shall:
• Be located in the room that houses
the appliance or equipment;
• Be hard-wired, battery powered or both.
• Shall comply with NFPA 720 (2005
Edition).
c.) A product-approved vent terminal must
be used, and if applicable, a product-
approved air intake must be used.
Installation shall be in strict compliance
with the manufacturer’s instructions. A
copy of the installation instructions shall
remain with the appliance or equipment
at the completion of the installation.
The information listed below is for reference
purposes only and does not necessarily have
jurisdiction over local or state codes. Always
consult with local authorities before installing
any gas appliance.
Combustion and Ventilation Air
• US: National Fuel Gas Code (NFGC), Air for
Combustion and Ventilation
• CANADA: Natural Gas and Propane Instal-
lation Codes (NSCNGPIC), Venting Systems
and Air Supply for Appliances
Duct Systems
• US and CANADA: Air Conditioning Contractors
Association (ACCA) Manual D, Sheet Metal
and Air Conditioning Contractors National
Association (SMACNA), or American Society
of Heating, Refrigeration, and Air Conditioning
Engineers (ASHRAE) Fundamentals Hand-
book
Electrical Connections
• US: National Electrical Code (NEC) ANSI/
NFPA 70
• CANADA: Canadian Electrical Code CSA
C22.1
Gas Piping and Gas Pipe Pressure Testing
• US: NFGC and National Plumbing Codes
• CANADA: NSCNGPIC
General Installation
• US: Current edition of the NFGC and the
NFPA 90B. For copies, contact the National
Fire Protection Association Inc., Batterymarch
Park, Quincy, MA 02269; or American Gas
Association, 400 N. Capitol, N.W., Washington
DC 20001 or www.NFPA.org
• CANADA: NSCNGPIC. For a copy, contact
Standard Sales, CSA International, 178
Rexdale Boulevard, Etobicoke (Toronto),
Ontario, M9W 1R3 Canada
Safety
• US: (NFGC) NFPA 54–1999/ANSI Z223.1 and
the Installation Standards, Warm Air Heating
and Air Conditioning Systems ANSI/NFPA 90B.
• Federal Manufactured Home Constructions
& Safety Standard (H.U.D. Title 24, Part
3280.707[a][2])
• The Standard for Manufactured Home
Installations (Manufactured Home Sites,
Communities, and Set-Ups) ANSI A225.1 and/
or CAN/CSA-2240 MH Series).