Table of Contents
Advertisement
4.2
Operating limits of the boiler
The heat exchanger has been designed and certified in accordance with
the ASME Boiler and Pressure Vessel Code, Section IV.
Maximum boiler temperature
Maximum operating temperature
Table 13 Operating limits
The hot water distribution system must comply with all applicable codes
and regulations. When replacing an existing boiler, it is important to
check the condition of the entire hot water distribution system to ensure
safe operation. Common practice calls for inspecting an existing system
in its entirety and bringing it up to code. All pipe work should be properly
cleaned and flushed.
4.3
Additional regulations for installations in the
Commonwealth of Massachusetts
(a) For all side wall side 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 [2150 mm] 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 ensure that a hard-wired
carbon monoxide detector with an alarm and uninterruptible power
supply is installed on the floor level where the gas equipment is to be
installed. In addition, the installing plumber or gas fitter shall ensure
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.
– 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 uninterruptible power
supply may be installed on the next adjacent floor level.
– In the event that the requirements of this subsection 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 NPA 720 and be 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 gas0fueled heating appliance or equipment.
The sign shall read, in print size no less than one-half (½) inch in size,
"GAS VENT DIRECTLY BELOW. DO NOT BLOCK."
• CHECK. The state or local gas inspector of the side wall horizontally
vented gas-fueled equipment shall not approve the installation
unless, upon inspections, the inspector observes carbon monoxide
detectors and signage installed in accordance with the provisions of
248 CRM 5.08(2)(a) 1 through 4.
Greenstar FS/Combi FS – 6 720 810 590 (2020/04)
190 °F (88 °C)
30 psi (2.07 bar)
(b) EXEMPTIONS: The following equipment is exempt from 248 CRM
5.08(2)(a) 1 through 4:
• The equipment listed in Section 10 entitled "Equipment Not
Required To Be Vented" in the most current edition of NFPA 54 as
adopted by the board; and
• 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'S REQUIREMENTS - GAS EQUIPMENT VENTING
SYSTEM REQUIRED. When the manufacturer of Product Approved side
wall horizontally mounted gas-fueled equipment provides a venting
system design or venting system components with the equipment, the
instructions provided by the manufacturer for the installation of the
equipment and venting shall include:
• Detailed instructions for the installation of the venting system or the
venting system components; and
• a comprehensive parts list for the design and the components of the
venting system.
(d) MANUFACTURER'S REQUIREMENTS – NO VENTING SYSTEM FOR
GAS EQUIPMENT INCLUDED IN THE SCOPE OF DELIVERY. When the
manufacturer of Product Approved side wall horizontally vented gas-
fueled equipment does not provide the parts for the venting of flue
gases, but identifies "special venting systems", the following
requirements shall be satisfied by the manufacturer:
• The referenced "special venting systems" shall be included with the
appliance or equipment installation instructions.
• 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.
(e) A copy of all instructions for all Product Approved side wall
horizontally vented gas-fueled equipment, all venting instructions, all
parts lists for venting instructions, and/or venting design instructions
shall remain with the appliance or equipment at the completion of the
installation.
Regulations
27
Advertisement
Table of Contents
