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Requirements for the State of Massachusetts
NOTICE BEFORE INSTALLATION
This appliance must be installed by a licensed plumber or gas fitter in accordance with the Massachusetts Plumbing and Fuel Gas
Code 248 CMR Sections 2 00 and 5 00
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IMPORTANT In the State of Massachusetts 248 CMR 4 00
5 00
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For all side wall horizontally vented gas fueled equipment installed in every dwelling building or structure used in whole or in part for
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residential purposes including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than
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seven 7 feet above finished grade in the area of the venting including but not limited to decks and porches the following requirements shall
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be satisfied:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS At the time of installation of the side wall horizontal vented gas fueled equipment
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the installing plumber or gasfitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back up is
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installed on the floor level where the gas equipment is to be installed In addition the installing plumber or gasfitter shall observe that a
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battery operated or hard wired carbon monoxide detector with an alarm is installed on each additional level of the dwelling building or
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structure served by the side wall horizontal vented gas fueled equipment It shall be the responsibility of the property owner to secure the
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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
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monoxide detector with alarm and battery back up may be installed on the next adjacent floor level
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b. In the event that the requirements of this subdivision cannot be met at the time of completion of installation the owner shall have a
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period of thirty 30 days to comply with the above requirements provided however that during said thirty 30 day period a battery
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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
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comply with NFPA 720 and be ANSI UL 2034 listed and IAS certified
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3. SIGNAGE A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of
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eight 8 feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or
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equipment The sign shall read in print size no less than one half 1 2 inch in size
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GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL
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OBSTRUCTIONS
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4. INSPECTION The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation
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unless upon inspection the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of
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248 CMR 5 08 2 a 1 through 4
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