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b. In addition to the above requirements, if
there is not one already present, a carbon
monoxide detector with an alarm and
a battery back-up shall be installed and
located in accordance with the installation
requirements supplied with the detector on
the floor level where the gas equipment is
installed. The carbon monoxide detector with
an alarm shall comply with 527 CMR, ANSI/
UL 2034 Standards or CSA 6.19 and the most
current edition of NFPA 720. In the event that
the requirements of this subdivision can not
be met at the time of the completion of the
installation of the equipment, the installer
shall have a period of thirty (30) days to
comply with this requirement; provided,
however, that during said thirty (30) day
period, a battery operated carbon monoxide
detector with an alarm shall be installed in
compliance with the most current edition of
NFPA 720, NFPA 70 and the Massachusetts
State Building Code. In the event that the
sidewall horizontally vented gas fueled
equipment is installed in a crawl space or
an attic, the carbon monoxide detector may
be installed on the next adjacent habitable
floor level. Such detector may be a battery
operated carbon monoxide detector with an
alarm and shall be installed in compliance
with the most current edition of NFPA 720,
NFPA 70 and the Massachusetts State Building
Code.
c. 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".
Thermal Solutions, 1175 Manheim Pike, Lancaster, PA 17601 Website: www.thermalsolutions.com
Phone: 717-239-7642 Fax: 877-501-5212 Email: sales@thermalsolutions.com
d. A final inspection by the state or local gas
inspector of the sidewall horizontally vented
equipment shall not be performed until proof
is provided that the state or local electrical
inspector having jurisdiction has granted a
permit for installation of carbon monoxide
detectors and alarms as required above.
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 sidewall 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. When the manufacturer of Product Approved
sidewall horizontally vented gas equipment
provides a venting system design or venting
system components with the equipment, the
instructions for installation of the equipment
and the venting system shall include:
a. A complete parts list for the venting system
design or venting system; and
b. Detailed instructions for the installation of the
venting system design or the venting system
components.
4. When the manufacturer of a Product Approved
sidewall horizontally vented gas fueled
equipment does not provide the parts for
venting flue gases, but identifies "special
venting systems", the following shall be
satisfied:
a. The referenced "special venting system"
instructions shall be included with the
appliance or equipment installation
instructions; and
b. 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.
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