41521-2-0520
Page 41
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 venting, including
but not limited to decks and porches, the following require
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ments shall be satisfied:
1. INSTALLATION OF CARBON MONOXIDE DETEC
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TORS. At the time of installation of the side wall horizon
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tal vented gas fueled equipment, the installing plumb
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er 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 in
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stalled 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 fueled equipment is installed in a crawl space
or an attic, the hard wired carbon monoxide detec
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tor with alarm and battery back-up may be installed
on the next adjacent floor level.
b. In the event that the requirements of this subdivi
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sion 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; pro
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vided, 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 accor
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dance 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 permanently mounted to the exterior of the building
at a minimum height of eight feet above grade directly
in line with the exhaust vent termination for the horizon
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tally vented gas fueled heating appliance or equipment.
The sign shall read, in print size no less than 1/2 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
“Equipment 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 vent
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ed gas fueled equipment installed in a room or
structure separate from the dwelling, building
or structure used in whole or in part for residen
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tial purposes.
(d) MANUFACTURER REQUIREMENTS - GAS
EQUIPMENT VENTING SYSTEM NOT PROVID
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ED. When the manufacturer of a Product Approved
side wall horizontally vented gas fueled equipment
does not provide the parts for venting the flue gas
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es, but identifies “special venting systems”, the fol
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lowing requirements shall be satisfied by the manu
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facturer:
1. The referenced “special venting system” in
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structions 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 de
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tailed installation 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 in
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structions shall remain with the appliance or equip
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ment at the completion of the installation.