30794-4-0513
Page 5
REqUIREMENTS FOR MASSACHUSETTS
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 feet above finished grade in the area of the vent
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ing, 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 vented gas fu
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eled equipment, the installing plumber or gasfitter 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
carbon monoxide detector with an alarm 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
a. In the event that the side wall horizontally vented gas fu
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eled 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.
b. 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 days to comply with
the above requirements; provided, however, that during
said thirty 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 NFPA 720 and be ANSI/UL 2034
listed and IAS certified.
3. SIGNAGE. A metal or plastic identification plate shall be per
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manently mounted to the exterior of the building at a minimum
height of eight feet above grade directly in line with the exhaust
vent terminal for the horizontally vented gas fueled heating ap
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pliance or equipment. The sign shall read, in print size no less
than one-half 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 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.
(b) EXEMPTIONS: The following equipment is exempt from
248 CMR 5.08(2)(a)1 through 4:
1. The equipment listed in Chapter 10 entitled “Equip
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ment Not Required To Be Vented” in the most current
edition of NFPA 54 as adopted by the Board; and
2. 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.
(d) MANUFACTURER REQUIREMENTS - GAS EQUIP
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MENT VENTING SYSTEM NOT PROVIDED. When the
manufacturer of a Product Approved side wall horizontally
vented gas fueled 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:
1. The referenced “special venting system” instructions
shall be included with the appliance or equipment
installation instructions; and
2. The “special venting systems” shall be Product Ap
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proved by the Board, and the instructions for that
system shall include a parts list and detailed installa
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tion instruction.
(e) 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 installa
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tion.
