
Heat & Glo • PIER-HV-IPI, ST-HV-IPI, L&R-COR-HV-IPI • 2005-900 Rev. K • 11/0614
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)
feetabovefinished grade in theareaofthe venting, includ-
ing but not limited to decks and porches, the following re-
quirements shall be satisfied:
Installation of Carbon Monoxide Detectors
Atthetimeofinstallationofthesidewallhorizontalvented
gas fueled equipment, the installing plumber or gasfitter
shallobservethata 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 addi-
tion,theinstallingplumberorgasfittershallobservethata
battery operated or hard wired carbon monoxide detector
with an alarm is installed on each additional level of the
dwelling,buildingorstructureservedbythesidewallhori-
zontalventedgas fueled equipment. Itshallbethe respon-
sibilityofthe property ownertosecurethe services ofqual-
ifiedlicensedprofessionals fortheinstallation ofhardwired
carbonmonoxidedetectors.
In the event that the side wall horizontally vented gas fu-
eledequipmentisinstalledina crawl space or an attic, the
hard wired carbon monoxide detector with alarm and bat-
tery back-up may be installed on the next adjacent floor
level.
In the event that the requirements of this subdivision can
not be met at the time of completion of installation, the
ownershallhavea period of thirty(30)daystocomply with
theaboverequirements;provided,however,thatduringsaid
thirty(30)dayperiod, a battery operatedcarbonmonoxide
detector with an alarm shall be installed.
Approved Carbon Monoxide Detectors
Eachcarbonmonoxide detectorasrequiredin accordance
withtheaboveprovisionsshall comply with NFPA720and
beANSI/UL2034 listed and IAS certified.
Signage
Ametalorplasticidentification plate shall be permanently
mountedtothe exterior ofthebuildingat a minimumheight
of eight (8) feet above grade directly in line with the ex-
haust 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 OB-
STRUCTIONS”.
Inspection
Thestateor local gas inspector of the side wall horizontally
ventedgasfueled equipment shallnotapprove the installa-
tionunless, uponinspection,the inspectorobservescarbon
monoxidedetectorsandsignageinstalledinaccordancewith
theprovisions of248CMR5.08(2)(a)1through 4.
Exemptions
Thefollowingequipmentisexemptfrom248CMR5.08(2)(a)1
through4:
• Theequipmentlistedin Chapter 10 entitled “Equipment
Not Required To Be Vented” in the most current edition
of NFPA54 as adopted by the Board; and
• ProductApproved side wall horizontally vented gas fu-
eled equipment installed in a room or structure sepa-
ratefrom thedwelling,buildingorstructureusedin whole
orinpartforresidentialpurposes.
MANUFACTURERREQUIREMENTS
Gas Equipment Venting System Provided
Whenthemanufacturerof ProductApprovedsidewall hor-
izontallyventedgasequipmentprovidesaventingsystem
designorventingsystemcomponentswith the equipment,
the instructions provided by the manufacturer for installa-
tionoftheequipment and the venting system shallinclude:
• Detailed instructions for the installation of the venting
system design or the venting system components; and
• A complete parts list for the venting system design or
ventingsystem.
Gas Equipment Venting System NOT Provided
When the manufacturer of a Product Approved side wall
horizontallyventedgasfueled equipment does not provide
the parts for venting the flue gases, but identifies “special
venting systems”, the following requirements shall be sat-
isfiedbythemanufacturer:
• Thereferenced“specialventingsystem”instructionsshall
beincludedwiththe appliance or equipmentinstallation
instructions;and
• The“special ventingsystems” shallbe ProductApproved
by the Board, and the instructions for that system shall
includeapartslistanddetailedinstallation instructions.
A copy of all installation instructions for all Product Ap-
provedsidewallhorizontally vented gas fueledequipment,
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.
See Gas Connection section for additional Common-
wealth of Massachusetts requirements.
NOTE: The following requirements reference various
Massachusetts and national codes not contained in
this document.
G. Requirements for the Commonwealth of
Massachusetts