Unvented Cast Iron Gas Stoves
25
3-90-58D6002
Monessen • Concorde VF Installation Manual_R11 • 02/17
Requirements for the Commonwealth of
Massachusetts
This product must be installed by a licensed plumber or
gas fitter when installed within the Commonwealth of
Massachusetts.
Note Regarding Vented Products
Flex line installation must not exceed 36 inches and must
have a T shutoff valve.
Any residence with a direct vent product must have a CO
detector installed in the residence.
Installation of the fireplace or vented gas log in the State
of Massachusetts requires the damper to be permanently
removed or welded in the fully open position.
In addition, neither a naturally vented gas log nor a vent-free
product may be installed in a bedroom or bathroom in the
State of Massachusetts.
All gas fitting and installation of this heater shall only be done
by a licensed gas fitter or licensed plumber.
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 following requirements
shall be satisfied:
Installation of Carbon Monoxide Detectors
At the time of installation of the side wall horizontal vented
gas fueled equipment, the installing plumber or gas fitter shall
observe that a 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.
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.
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.
Approved Carbon Monoxide Detectors
Each carbon monoxide detector as required in accordance
with the above provisions shall comply with NFPA 720 and
ANSI/UL 2034 listed and IAS certified.
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”.
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.
Exemptions
The following equipment is exempt from 248 CMR 5.08(2)
(a)1 through 4:
• 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
• 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.
Manufacturer Requirements:
Gas Equipment 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:
• 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
venting system.
Gas Equipment Venting System NOT Provided
When the manufacturer of a Product Approved side wall
horizontally vented gas fueled equipment does not provide
the parts for venting the flue gases, but identifies “special
venting systems”, the following requirements shall be
satisfied by the manufacturer:
• The referenced “special venting system” instructions shall
be included with the appliance or equipment installation
instructions; and
• 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.
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.
