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 (7) feet above ﬁnished grade in the area of the venting, including but not limited to decks and porches, the fol- lowing requirements shall be satisﬁed:

1.INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the side wall horizontal vented gas fueled 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 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.

(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 (30) days to comply with the above requirements; provided, however, that dur- ing 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 NFPA720 and beANSI/UL 2034 listed and IAS certiﬁed.

3.SIGNAGE. A metal or plastic identiﬁcation plate shall be per- manently 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 horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, “GAS VENT

DIRECTLYBELOW. KEEPCLEAR OFALLOBSTRUC- TIONS”.

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

248CMR 5.08(2)(a)1 through 4:

1.The equipment listed in Chapter 10 entitled “Equip- 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.

(c)MANUFACTURER REQUIREMENTS - GAS EQUIP- MENT 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:

1.Detailed instructions for the installation of the vent- ing system design or the venting system components; and

2.A complete parts list for the venting system design or venting system.

(e)A copy of all installation instructions for all Product Ap- proved side wall horizontally vented gas fueled equipment, all venting instructions, all parts lists for venting instruc- tions, and/or all venting design instructions shall remain with the appliance or equipment at the completion of the installation.

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