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NOTICE!
Commonwealth of Massachusetts
Installation Requirements MACODE-3
In the Commonwealth of Massachusetts, the installa-
tion must be performed by a licensed plumber or gas
tter.
1. 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 nished grade,
in the area of the venting, including but not limited to decks and
porches, the following requirements shall be satis ed:
d. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the
time of installation of the side wall horizontal vented gas
fueled equipment, the installing plumber or gas tter shall
observe that a hard wired carbon monoxide detector with an
alarm and battery back-up is installed on the oor level
where the gas equipment is to be installed. In addition, the
installing plumber or gas tter 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 quali ed
licensed professionals for the installation of hard wired
carbon monoxide detectors.
i. 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
oor level.
ii. 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.
e. 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 certi ed.
f. 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 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
DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS”.
g. 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.
Improper venting can result in excessive levels of
carbon monoxide which can cause severe personal
injury or death!
2. Exemptions — The following equipment is exempt from
248 CMR 5.08(2)(a) 1 through 4:
a. 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
b. 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.
3. MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING
SYSTEM PROVIDED.
a. 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:
i. Detailed instructions for the installation of the venting
system design or the venting system components; and
ii. A complete parts list for the venting system design or
venting system.
4. MANUFACTURER REQUIREMENTS – GAS EQUIPMENT VENTING
SYSTEM NOT PROVIDED.
a. When the manufacturer of a Product Approved side wall
horizontally vented gas fueled equipment does not provide
the parts for venting the ue gases, but identi es “special
venting systems”, the following requirements shall be
satis ed by the manufacturer:
i. The referenced “special venting system” instructions
shall be included with the appliance or equipment
installation instructions; and
ii. 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.
5. 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 installation.
Improper venting can result in excessive levels of
carbon monoxide which can cause severe personal
injury or death!
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