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REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS
The following requirements reference various Massachusetts
and national codes not contained in this manual. For all
sidewall horizontally vented gas fueled equipment installed
in every dwelling, building or structure used in whole or in part
for residential purposes, including those owned or operated
by the Commonwealth and where the side wall exhaust vent
termination is less than (7) feet above finished grade in the
area of the venting, including but not limited to decks and
porches, the following requirements shall be satisfied:
Installation of Carbon Monoxide Detectors
At time of installation of side wall horizontally vented gas
fueled equipment, the installing plumber or gas-fitter shall
observe that a hard wired carbon monoxide detector with an
alarm and battery back-up is installed on the floor level where
the gas equipment is to be installed. In addition, the installing
plumber or gas-fitter shall observe that a battery operated or
hard wired carbon monoxide detector is installed on each
additional level of the dwelling, building or structure served
by the side wall horizontal vented gas fueled equipment. It
shall be the responsibility of the property owner to secure the
services of qualified licensed professionals for the installation
of hard wired carbon monoxide detectors. In the event that
the side wall horizontally vented gas fueled equipment is
installed in a crawl space or attic, the hard wired carbon
monoxide detector with alarm and battery back-up may be
installed on the next adjacent floor level. In the event that the
requirements of this subdivision can not be met at the time
of completion of installation, the owner shall have a period
of thirty (30) days to comply with the above requirements;
provided, however, that during said thirty (30) day period, a
battery operated carbon monoxide detector with an alarm
shall be installed.
Approved Carbon Monoxide Detectors
Each carbon monoxide detector as required in accordance
with the above provisions shall comply with NFPA 720 and be
ANSI/UL 2034 listed and IAS certified.
Signage
A metal or plastic identification plate shall be permanently
mounted to the exterior of the building at a minimum of eight
(8) feet above grade directly in line with the exhaust vent
terminal for the horizontally vented gas fueled heating the
appliance or equipment. The sign shall read, in print no less
the one-half inch (1/2) in size, “GAS VENT DIRECTLY BELOW.
KEEP CLEAR OF ALL OBSTRUCTIONS”.
Inspection
The state or local gas inspector of the side wall horizontally
vented gas fueled equipment shall not approve the
installation unless, upon inspection, the inspector observes
carbon monoxide detectors and signage installed in
accordance with the provisions of 248 CMR 5.08 (2) (a) 1
through 4.
Exemptions
The following equipment is exempt from 248 CMR 5.08 (2)
(a) 1 through 4: The equipment listed in Chapter 10 entitled
“Equipment Not Required To Be Vented” in the most current
edition of NFPA 54 as adopted by the Board; and Product
Approved side wall horizontally vented gas fueled equipment
installed in a room or structure separate from the dwelling,
building or structure used in whole or in part for residential
purposes.
Manufacturer Requirements
Gas Equipment Venting System Provided: When the
manufacturer of Product Approved side wall horizontally
vented gas equipment provides a venting system design
or venting system components with the equipment, the
instructions provided by the manufacturer for installation of
the equipment and the venting system shall include:
• Detailed instructions for the installation of the venting
system design or the venting system components; and
• A complete parts list for the venting system design or
venting system.
Gas Equipment Venting System NOT Provided
When the manufacturer of Product Approved side wall
horizontally vented gas equipment does not provide the
parts for venting the flue gases, but identifies “special venting
systems”, the following requirements shall be satisfied by the
manufacturer:
• The referenced “special venting systems” instructions shall
be included with the appliance or equipment installation
instructions and;
• The “special venting systems” shall be Product Approved
by the Board, and the instructions for that system shall
include a parts list and detailed installation instructions.
A copy of all installation instructions for all Product Approved
side wall horizontally vented gas fueled equipment, all venting
instructions, all parts lists for venting instructions, and/or all
venting design instructions shall remain with the appliance or
equipment at the completion of the installation.
OVERVIEW
