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For direct-vent, mechanical-vent, or domestic hot water equipment
and appliances where the bottom of the vent terminal and the air
intake is installed below four feet above grade, the following
requirements must be satisfied:
1.
If there is not one already present on each floor level where
there are bedrooms, a carbon monoxide detector and alarm
shall be placed in the living area outside the bedrooms. The
carbon monoxide detector shall comply with NFPA 720.
2.
A carbon monoxide detector shall also be located in the room
that houses the appliance or equipment and shall:
a. Be powered by the same electrical circuit as the appliance
or equipment such that only one service switch services
both the appliance and the carbon monoxide detector;
b. Have battery back-up power;
c. Meet ANSI/UL 2034 Standards and comply with NFPA
720; and
d. Have been approved and listed by a nationally recognized
testing laboratory under 527 CMR.
3.
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.
4.
A metal or plastic identification plate shall be mounted on the
exterior of the building, four feet directly above the location of
the vent terminal. The plate shall be of sufficient size to be
easily read from a distance of eight feet away and read "Gas
Vent Directly Below".
NOTICE
Installer must provide tag identification plate and en-
sure the lettering meets code requirements.
3.5 Commonwealth of Massachusetts Installations Only
3. Combustion Air & Venting
For direct-vent, mechanical-vent, or domestic hot water equipment
and appliances where the bottom of the vent terminal and the air
intake are installed above four feet above grade, the following
requirements must be satisfied:
1.
If there is not one already present on each floor level where
there are bedrooms, a carbon monoxide detector and alarm
shall be placed in the living area outside the bedrooms. The
carbon monoxide detector shall comply with NFPA 720.
2.
A carbon monoxide detector shall also be located in the room
that houses the appliance or equipment and shall:
a. Be hard wired, battery powered, or both; and
b. Shall comply with NFPA 720.
3.
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.
8
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