ARTICLE V.
INTERNATIONAL MECHANICAL CODE
Sec. 8-500.
Adopted; where filed; amendments.
(a) That certain
document known as the "International Mechanical Code, 2009 Edition,"
which has been published as a code in book form by the International Code Council,
chapters two through nine, chapters eleven through fifteen and appendix chapter
A inclusive, three (3) copies with amendments of which are on file in the
office of the City Clerk.
(Ord. No. 2011.33, 9-22-11)
Charter
reference—Adoption by reference, § 2.14.
State law reference—Adoption
by reference, A.R.S. § 9-801 et seq.
Sec. 202 GENERAL DEFINITIONS.
Section 202 is hereby amended as follows:
SMOKE DETECTOR. An approved listed and
labeled device that senses visible or invisible particles of combustion.
(Ord. No. 2011.33, 9-22-11)
Sec. 303 EQUIPMENT
AND APPLIANCE LOCATION.
Section
303.3 is hereby amended as follows:
Section
303.3 Prohibited locations. Fuel-fired
appliances shall not be located in, or obtain combustion air from, any of the
following rooms or spaces:
1. Sleeping rooms.
2. Bathrooms.
3. Toilet rooms.
4. Storage closets.
5. Surgical rooms.
6. Any room operating under negative pressure
unless the appliances are listed for that use.
Exceptions: This section shall not apply to the following
appliances:
1. Direct-vent appliances that obtain all
combustion air directly from the outdoors.
2. Solid fuel-fired appliances provided that
the room is not a confined space and the building is not of unusually tight
construction.
3. Appliances installed in a dedicated
enclosure in which all combustion air is taken directly from the outdoors, in
accordance with Chapter 7. Access to such enclosure shall be through a solid door,
weather-stripped in accordance with the exterior door air leakage requirements
of the International Energy Conservation Code and equipped with an approved
self-closing device.
Section 303.7
is hereby amended as follows:
Section 303.7
Pit locations. Appliances installed in pits or
excavations shall not come in contact with the surrounding soil. The sides of
the pit or excavation shall be held back a minimum of 12 inches (305 mm) from
the appliance. Where the depth exceeds 12 inches (305 mm) below adjoining
grade, the walls of the pit or excavation shall be lined with concrete or masonry.
Such concrete or masonry shall extend a minimum of 4 inches (102 mm) above to
adjacent grade and shall have sufficient lateral load-bearing capacity to
resist collapse. The appliance shall be protected from flooding in an approved
manner. Liquefied petroleum (LPG) appliances shall not be installed in a pit,
attic or other location that would cause a ponding or retention of gas.
(Ord. No. 2011.33, 9-22-11)
Sec. 304. INSTALLATION.
Section
304.3 is hereby amended as follows:
Section 304.3 Elevation
of ignition source. Equipment and appliances having an ignition source
and located in hazardous locations and public garages, private garages, repair
garages, automotive motor fuel-dispensing facilities and parking garages shall
be elevated such that the source of ignition is not less than 18 inches (457
mm) above the floor surface on which the equipment or appliance rests. For the
purpose of this section, rooms or spaces that are not part of the living space
of a dwelling unit and that communicate directly with a private garage through
openings shall be considered to be part of the private garage.
Exceptions:
1. Elevation of the ignition source is not
required for appliances that are listed as flammable vapor resistant and for
installation without elevation.
2. Direct-vent appliances that obtain all
combustion air directly from the outdoors.
3. Clothes dryers installed in
private garages.
Section
304.10 is hereby amended as follows:
Section
304.10 Clearances from grade. Equipment and appliances installed at grade level shall be
supported on a level concrete slab or other approved material extending a
minimum of 3 inches (76 mm) above finished
grade or shall be suspended a minimum of 6 inches (152 mm) above finished
grade. Such support shall be in accordance with the manufacturer's installation
instructions.
(Ord. No. 2011.33, 9-22-11)
Sec. 401 GENERAL.
Section
401.4.1 is hereby amended as follows:
Section 401.4.1. Intake openings. Air intake openings shall
comply with all of the following:
1. Intake openings shall be
located a minimum of 10 feet (3048 mm) from lot lines or buildings on the same
lot. Where openings front on a street or public way, the distance shall be
measured to the centerline of the street or public way.
2. Mechanical and gravity
outdoor air intake openings shall be located not less than 10 feet (3048 mm)
horizontally from any hazardous or noxious contaminant source, such as vents,
streets, alleys, parking lots and loading docks, except as specified in Item 3
or Section 501.2.1.
3. Intake openings shall be
located not less than 3 feet (914 mm) below contaminant sources where such
sources are located within 10 feet (3048 mm) of the opening.
4. Intake openings on
structures in flood hazard areas shall be at or above the design flood level.
The exhaust from a bathroom or kitchen in a
residential dwelling shall not be considered to be a hazardous or noxious
contaminant.
(Ord. No. 2011.33, 9-22-11)
Sec. 506 COMMERCIAL
KITCHEN HOOD VENTILATION SYSTEM DUCTS AND EXHAUST EQUIPMENT.
Section
506.3.10.4 is hereby amended as follows:
Section 506.3.10.4
Non-fire-resistance-rated roof/ceiling assembly penetration. A duct enclosure for a grease duct that penetrates only a
non-fire-resistant-rated roof/ceiling assembly and only passes through the
attic space may have the total thickness of the required fire-resistive
material installed on the duct side of the duct enclosure.
(Ord. No. 2011.33, 9-22-11)
Sec. 606 SMOKE DETECTION SYSTEMS CONTROL.
Section
606.2 is hereby amended as follows:
Section
606.2 Where required. Smoke
detectors shall be installed where indicated in Sections 606.2.1 through
606.2.3.
Exceptions:
1.Smoke detectors shall not be required where air
distribution systems are incapable of spreading smoke beyond the enclosing
walls, floors and ceilings of the room or space in which the smoke is
generated.
2.Evaporative coolers which supply 100% outside air.
Section 606.2.1 Return air systems. Smoke detectors shall be installed in air distribution systems
with a design capacity greater than 2,000 cfm (0.9 m3/s)
in the return air ducts or plenum upstream of any filters, exhaust air
connections, outdoor air connections, or decontamination equipment and
appliances or in the main supply air
duct or plenum served by such air distribution system.
Exception:
Smoke detectors are not
required in the main supply air or return air system where all portions of the
building served by the air distribution system are protected by area smoke
detectors connected to a fire alarm system in accordance with the International Fire Code. The area smoke
detector system shall comply with Section 606.4.
Section 606.2.2
Common supply and return air systems. Where multiple air-handling systems share
a common supply air or return air ducts or plenums with a combined design
capacity greater than 2,000 cfm (0.9 m3/s),
the supply air or the return air system shall be provided with smoke detectors
in accordance with Section 606.2.1.
Section 606.2.3
Supply air or return air risers. Where supply air or return air risers
serve two or more stories and serve any portion of a supply air or return air
system having a design capacity greater than 15,000 cfm (7.1
m3/s), smoke detectors shall be installed at each story. Such
smoke detectors shall be located upstream of the connection between the supply
air or return air riser and any air ducts or plenums.
(Ord. No. 2011.33, 9-22-11)
Sec. 902 MASONRY
FIREPLACES.
Section
902.1 is hereby amended as follows:
Section 902.1
General. Masonry fireplaces
shall be constructed in accordance with the International Building Code and comply with Section 928 of this code.
(Ord. No. 2011.33, 9-22-11)
Sec. 903 FACTORY-BUILT
FIREPLACES.
Section
903.1 is hereby amended as follows:
Section 903.1
General. Factory-built fireplaces shall be listed and labeled and shall be
installed in accordance with the conditions of the listing and comply with
Section 928.
Factory-built fireplaces shall be tested in accordance with UL 127.
(Ord. No. 2011.33, 9-22-11)
Sec. 904. PELLET FUEL-BURNING APPLIANCES.
Section
904.1 is hereby amended as follows:
Section 904.1
General. Pellet fuel-burning
appliances shall be listed and labeled in
accordance with ASTM E 1509 and shall be installed in accordance with the terms
of the listing and comply with Section 928.
(Ord. No. 2011.33, 9-22-11)
Sec. 905 FIREPLACE
STOVES AND ROOM HEATERS.
Section
905.1 is hereby amended as follows:
Section 905.1
General. Fireplace stoves and
solid-fuel-type room heaters shall be listed and labeled and shall be installed
in accordance with the conditions of the listing and comply with Section 928. Fireplace stoves shall be tested in
accordance with UL 737. Solid-fuel-type room heaters shall be tested in
accordance with UL1482. Fireplace inserts intended for installation in
fireplaces shall be listed and labeled in accordance with the requirements of
UL1482 and shall be installed in accordance with the manufacturer’s
installation instructions and comply with Section 928.
(Ord. No. 2011.33, 9-22-11)
Sec. 928 SOLID FUEL-BURNING
EQUIPMENT OR FIREPLACE RESTRICTIONS.
Section 928
is hereby added as follows:
Section 928.1 Definitions. For the purposes of this section, the
following words and terms shall have the meaning ascribed thereto:
FIREPLACE: Means a built-in-place masonry hearth and
fire chamber or a factory built appliance, designed to burn solid fuel or to
accommodate gas or electric log insert or similar device, and which is intended
for occasional recreational or aesthetic use, not for cooking, heating, or
industrial processes.
SOLID FUEL: Means and includes, but is not limited to,
wood, coal, or other nongaseous or non-liquid fuels, including those fuels
defined by the Maricopa County Air Pollution Control Officer as
"inappropriate fuel" to burn in residential wood burning devices.
WOOD STOVE: Means a solid-fuel-burning heating
appliance including a pellet stove, which is either freestanding or designed to
be inserted into a fireplace.
Section 928.2
General. On or after December
31, 1998, no person, firm, or corporation shall construct or install a
fireplace or a woodstove, and the city shall not approve or issue a permit to
construct or install a fireplace or a woodstove, unless the fireplace or
woodstove complies with one of the following:
1. A fireplace which has permanently installed
gas or electric log insert;
2. A fireplace, woodstove, or other
solid-fuel-burning appliance which has been certified by the United States
Environmental Protection Agency as conforming to 40 Code of Federal Regulations
Part 60, Subpart AAA;
3. A fireplace, woodstove, or other
solid-fuel-burning appliance that has been tested and listed by a nationally
recognized testing agency to meet performance standards equivalent to those
adopted by 40 Code of Federal Regulations Part 60, Subpart AAA;
4. A fireplace, woodstove, or other
solid-fuel-burning appliance that has been determined by the Maricopa County
Air Pollution Control Officer to meet performance standards equivalent to those
adopted by 40 Code of Federal Regulations Part 60, Subpart AAA; or
5. A fireplace that has a permanently installed
woodstove insert that complies with paragraphs 2, 3, or 4 above.
Exceptions:
The following
installations are not regulated and are not prohibited by this section:
1. Furnaces, boilers, incinerators, kilns,
and other similar space heating or industrial process equipment;
2. Cook stoves, barbecue grills, and similar
appliances designed primarily for cooking; and
3. Fire pits, barbecue grills, and other
outdoor fireplaces.
Fireplaces constructed or installed on or
after December 31, 1998, that contain a gas or electric log insert or a
woodstove insert, shall not be altered to directly burn wood or any other solid
fuel. On or after December 31, 1998, no person, firm, or corporation shall
alter a fireplace, woodstove, or other solid-fuel-burning appliance in any
manner that would void its certification or operational compliance with the
provisions of this section.
Fireplaces
constructed or installed on or after December 31, 1998, shall not be altered
without first obtaining a permit from the city to insure compliance with this
section.
(Ord. No. 2011.33, 9-22-11)