34 | Regulations
Copyright (optional information)6 720 643 068 (2011/06)
4.3 Additional regulations for installation in
Massachusetts
(a) For all side wall 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 seven (7) feet [2150 mm] above finished grade in the
area of the venting, including but not limited to decks and
porches, the following requirements shall be satisfied:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS.
At the time of installation of the side wall horizontal ven-
ted 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 gasfitter
shall observe that a battery operated or hard wired car-
bon monoxide detector with an alarm is installed on
each additional level of the dwelling, building or struc-
ture 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 pro-
fessionals for the installation of hard wired carbon mon-
oxide detectors.
– In the event that the side wall horizontally vented gas
fueled equipment is installed in a crawl space or an
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.
2. APPROVED CARBON MONOXIDE DETECTORS. Each
carbon monoxide detector as required in accordance
with the above provisions shall comply with NPA 720
and be ANSI/UL 2034 listed and IAS certified.
3. SIGNAGE. A metal or plastic identification plate shall be
permanently mounted to the exterior of the building at
a minimum height of eight (8) feet above grade directly
in line with the exhaust vent terminal for the horizon-
tally vented gas fueled heating appliance or equipment.
The sign shall read, in print size no less than one-half
(½) inch in size, “GAS VENT DIRECTLY BELOW. KEEP
CLEAR OF ALL OBSTRUCTIONS”.
4. INSPECTION. The state or local gas inspector of the side
wall horizontally vented gas fueled equipment shall not
approve the installation unless, upon inspections, the
inspector observes carbon monoxide detectors and sig-
nage installed in accordance with the provisions of
248 CRM 5.08(2)(a) 1 through 4.
(b) EXEMPTIONS: The following equipment is exempt from
248 CRM 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.
(c) MANUFACTURERS REQUIREMENTS - GAS EQUIPMENT
VENTING SYSTEM REQUIRED. When the manufacturer of
Product Approved side wall horizontally mounted gas
equipment provides a venting system design or venting
system components with the equipment, the instructions
provided by the manufacturer for the installation of the
equipment and venting shall include:
• Detailed instructions for the installation of the venting
system or the venting system components; and
• A complete parts list for the venting system design or
venting system.
(d) M
ANUFACTURERS REQUIREMENTS - GAS EQUIPMENT
VENTING SYSTEM
NOT PROVIDED. When the
manufacturer of Product Approved side wall horizontally
vented gas fueled equipment does not provide the parts
for the venting of flue gases, but identifies special venting
systems, the following requirements shall be satisfied by
the manufacturer:
1. The referenced special venting systems shall be
included with the appliance or equipment installation
instructions; and
2. 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.
(e) A copy of all instructions for all Product Approved side
wall horizontally vented gas fueled equipment, all venting
instructions, all parts lists for venting instructions, and/or
venting design instructions shall remain with the appliance
or equipment at the completion of the installation.
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