ORDINANCE NO. 8586
AN ORDINANCE OF THE CITY OF LAWRENCE, KANSAS REPEALING ARTICLE 6 OF CHAPTER V OF THE CODE OF THE CITY OF LAWRENCE, KANSAS, 2009 EDITION AND AMENDMENTS THERETO; AND ADOPTING THE INTERNATIONAL MECHANICAL CODE, 2009 EDITION, AND EXCEPTING, AMENDING AND MODIFYING CERTAIN OF ITS PROVISIONS.
BE IT ORDAINED BY THE GOVERNING BODY OF THE CITY OF LAWRENCE, KANSAS:
Section 1. Article 6 of Chapter V of the Code of the City of Lawrence, Kansas, 2009 Edition, and amendments thereto, is hereby repealed.
Section 2. Article 6 of Chapter V of the Code of the City of Lawrence, Kansas, 2009 Edition, and amendments thereto, is enacted to read as follows, the intent being to replace the current provisions:
ARTICLE 6. MECHANICAL CODE
5-601 MECHANICAL CODE INCORPORATED.
The International Mechanical Code, 2009 Edition, published by the International Code Council, is hereby adopted by reference as if it were fully set out in this article, except for those portions that are hereinafter deleted, modified or amended.
5-602 SAME.
Not less than one copy of the International Mechanical Code, 2009 Edition, marked or stamped in the manner provided by K.S.A. 12-3010, with all sections or portions thereof intended to be omitted clearly marked and showing portions that are amended and to which shall be attached a copy of the amendments, shall be filed with the City Clerk and shall be open to inspection and available to the public at reasonable business hours. Official copies of such Code shall be supplied at the cost of the City to the officials and agencies in the manner listed and set forth in K.S.A. 12-3010. Subsequent references to the "International Mechanical Code" or "Standard Code" shall mean the "International Mechanical Code, 2009 Edition" as adopted herein.
5-603 SEVERABILITY.
If any section, clause, sentence, or phrase of this Article is found to be unconstitutional or is otherwise held invalid by any court of competent jurisdiction, it shall not affect the validity of any remaining parts of this Article.
5-604 AMENDMENTS MADE TO THE INTERNATIONAL MECHANICAL CODE, 2009 EDITION.
The International Mechanical Code, 2009 Edition is amended or changed as follows. The amendment of any section shall not serve to amend or repeal any other discretely numbered provision of the code, whether or not such provision is considered a section or subsection, unless that section or subsection is specifically referenced in the ordinance.
5-605 A100 Appendix A Combustion Air Openings and Chimney Connector Pass-Throughs contained within the International Mechanical Code is hereby specifically adopted.
5-606 Chapter 1 of the International Mechanical Code, entitled Administration, is hereby deleted.
5-607 Section 303.3 of the International Mechanical Code is amended to read as follows:
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. Hot tub rooms.
Exception: 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 Section 703. 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.
5-608 Section 307.2 of the International Mechanical Code and the indicated subsections are amended to read as follows:
307.2 Evaporators and cooling coils. Condensate drain systems shall be provided for equipment and appliances containing evaporators or cooling coils. Condensate drain systems shall be designed, constructed and installed in accordance with Sections 307.2.1 through 307.2.4.
307.2.1 Condensate disposal. Condensate from all cooling coils and evaporators shall be conveyed from the drain pan outlet to an approved place of disposal. Such piping shall maintain a minimum horizontal slope in the direction of discharge of not less than one-eighth unit vertical in 12 units horizontal (1-percent slope). Condensate shall not discharge into a street, alley or other areas so as to cause a nuisance.
307.2.2
Drain pipe materials and sizes. Components of the condensate disposal system
shall be cast iron, galvanized steel, copper, cross-linked polyethylene,
polybutylene, polyethylene, ABS, CPVC or PVC pipe or tubing. All components
shall be selected for the pressure and temperature rating of the installation. Joints
and connections shall be made in accordance with the applicable provisions of
Chapter 7 of the International Plumbing Code relative to the material
type. Condensate waste and drain line size shall be not less than 3/4-inch (19
mm) internal diameter and shall not decrease in size from the drain pan
connection to the place of condensate disposal. Where the drain pipes from more
than one unit are manifolded together for condensate drainage, the piping
or tubing shall be sized in accordance with Table 307.2.2above drains
must comply with all of the following:
1. The pipe or tubing shall be sized in accordance with Table 307.2.2
2. A maximum of three(3) units may be connected together unless a minimum 1½” common drain is used and
3. The common drain must be provided with a cleanout for servicing.
TABLE 307.2.2
CONDENSATE DRAIN SIZING
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Up to 5 tons of refrigeration |
¾ inch |
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Up to 7 ½ tons of refrigeration |
1 inch |
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Up to 50 tons of refrigeration |
1 ½ inch |
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Up to 170 tons of refrigeration |
2 inch |
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Up to 300 tons of refrigeration |
3 inch |
1 inch = 25.4 mm, 1 ton = 3.517 kW.
307.2.3 Auxiliary and secondary drain systems. In addition to the requirements of Section 307.2.1, where damage to any building components could occur as a result of overflow from the equipment primary condensate removal system, one of the following auxiliary protection methods shall be provided for each cooling coil or fuel-fired appliance that produces condensate:
1. An auxiliary drain pan with a separate drain shall be provided under the coils on which condensation will occur. The auxiliary pan drain shall discharge to a conspicuous point of disposal to alert occupants in the event of a stoppage of the primary drain. The pan shall have a minimum depth of 11/2 inches (38 mm), shall not be less than 3 inches (76 mm) larger than the unit or the coil dimensions in width and length and shall be constructed of corrosion-resistant material. Galvanized sheet steel pans shall have a minimum thickness of not less than 0.0236 inch (0.6010 mm) (No. 24 gage). Nonmetallic pans shall have a minimum thickness of not less than 0.0625 inch (1.6 mm).
2. A separate overflow drain line shall be connected to the drain pan provided with the equipment. Such overflow drain shall discharge to a conspicuous point of disposal to alert occupants in the event of a stoppage of the primary drain. The overflow drain line shall connect to the drain pan at a higher level than the primary drain connection.
3. An auxiliary drain pan without a separate drain line shall be provided under the coils on which condensate will occur. Such pan shall be equipped with a water-level detection device conforming to UL 508 that will shut off the equipment served prior to overflow of the pan. The auxiliary drain pan shall be constructed in accordance with Item 1 of this section.
4. A water-level detection device conforming to UL 508 shall be provided that will shut off the equipment served in the event that the primary drain is blocked. The device shall be installed in the primary drain line, the overflow drain line, or in the equipment-supplied drain pan, located at a point higher than the primary drain line connection and below the overflow rim of such pan.
Exception: Fuel-fired appliances that automatically shut down operation in the event of a stoppage in the condensate drainage system.
307.2.3.1 Water-level monitoring devices. On downflow units and all other coils that do not have a secondary drain or provisions to install a secondary or auxiliary drain pan, a water-level monitoring device shall be installed inside the primary drain pan. This device shall shut off the equipment served in the event that the primary drain becomes restricted. Devices installed in the drain line shall not be permitted.
307.2.3.2 Appliance, equipment and insulation in pans. Where appliances, equipment or insulation are subject to water damage when auxiliary drain pans fill, that portion of the appliance, equipment and insulation shall be installed above the rim of the pan. Supports located inside of the pan to support the appliance or equipment shall be water resistant and approved.
307.2.4
Traps. Condensate drains shall be trapped as required recommended
by the equipment or appliance manufacturer.
5-609 Section 401.1 of the International Mechanical Code is amended to read as follows:
401.1 Scope. This chapter shall govern the ventilation of spaces within a building intended to be occupied. Mechanical exhaust systems, including exhaust systems serving clothes dryers and cooking appliances; hazardous exhaust systems; dust, stock and refuse conveyor systems; subslab soil exhaust systems; smoke control systems; energy recovery ventilation systems and other systems specified in Section 502 shall comply with Chapter 5.
401.1.1 Standards. Conformance with the current ASHRAE 62 standard shall be allowed in lieu of the ventilation requirements of Chapter 4.
5-610 Section [B] 601.2 of the International Mechanical Code and the indicated subsections are amended to read as follows:
[B] 601.2 Air movement in egress elements. Corridors shall not serve as supply, return, exhaust, relief or ventilation air ducts.
Exceptions:
1. Use of a corridor as a source of makeup air for exhaust systems in rooms that open directly onto such corridors, including toilet rooms, bathrooms, dressing rooms, smoking lounges and janitor closets, shall be permitted, provided that each such corridor is directly supplied with outdoor air at a rate greater than the rate of makeup air taken from the corridor.
2. Where located within a dwelling unit, the use of corridors for conveying return air shall not be prohibited.
3.
Where located within tenant spaces of 1,000 square feet (93 m2) or less in
area, utilization of corridors for conveying return air is permitted.
3.
4. Incidental air movement from pressurized rooms within health care
facilities, provided that the corridor is not the primary source of supply or
return to the room.
[B] 601.2.1 Corridor ceiling. Use of the space between the corridor ceiling and the floor or roof structure above as a return air plenum is permitted for one or more of the following conditions:
1. The corridor is not required to be of fire-resistance-rated construction;
2. The corridor is separated from the plenum by fire-resistance-rated construction;
3. The air-handling system serving the corridor is shut down upon activation of the air-handling unit smoke detectors required by this code;
4. The air-handling system serving the corridor is shut down upon detection of sprinkler waterflow where the building is equipped throughout with an automatic sprinkler system; or
5. The space between the corridor ceiling and the floor or roof structure above the corridor is used as a component of an approved engineered smoke control system.
5-611 Section 603.5 of the International Mechanical Code and the indicated subsections are amended to read as follows:
603.5
Nonmetallic ducts. Nonmetallic ducts shall be
constructed with Class 0 or Class 1 duct material in accordance with UL 181. Fibrous
duct construction shall conform to the SMACNA Fibrous Glass Duct Construction
Standards or NAIMA Fibrous Glass Duct Construction Standards. The maximum
air temperature within nonmetallic ducts shall not exceed 250ºF (121ºC).
603.5.1 Gypsum ducts. The use of gypsum boards to form air shafts (ducts) shall be limited to return air systems where the air temperatures do not exceed 125ºF (52ºC) and the gypsum board surface temperature is maintained above the airstream dew-point temperature. Air ducts formed by gypsum boards shall not be incorporated in air-handling systems utilizing evaporative coolers. Corridors shall not be used to convey air to or from rooms if the corridor is required to be of fire-resistive construction per the Building Code.
603.5.2 Prohibited. Rigid fibrous glass duct shall be prohibited.
Exception: Rigid Fibrous duct is permitted in R occupancies provided the duct is readily accessible for repair or cleaning.
5-612 Section 603.6 of the International Mechanical Code and the indicated subsections are amended to read as follows:
603.6 Flexible air ducts and flexible
air connectors. Flexible
air ducts, both metallic and nonmetallic, shall comply with Sections 603.6.1,
603.6.1.1, 603.6.3 and 603.6.4. Flexible air connectors, both metallic and
nonmetallic, shall comply with Sections 603.6.2 through 603.6.4.
603.6.1 Flexible air ducts. Flexible air ducts, both metallic and nonmetallic, shall be tested in accordance with UL 181. Such ducts shall be listed and labeled as Class 0 or Class 1 flexible air ducts and shall be installed in accordance with Section 304.1.
603.6.1.1 Duct length. Flexible air ducts
shall not be limited in length to 8 feet.
603.6.2 Flexible air connectors. Flexible air
connectors are not permitted, both metallic and nonmetallic, shall be
tested in accordance with UL 181. Such connectors shall be listed and labeled
as Class 0 or Class 1 flexible air connectors and shall be installed in
accordance with Section 304.1.
603.6.2.1 Connector length. Flexible air
connectors shall be limited in length to 14 feet (4267 mm).
603.6.2.2 Connector penetration
limitations.
Flexible air connectors shall not pass through any wall, floor or ceiling.
603.6.3 Air temperature. The design temperature of air to be conveyed in flexible air ducts and flexible air connectors shall be less than 250ºF (121ºC).
603.6.4 Flexible air duct and air
connector clearance. Flexible air ducts and air connectors shall be
installed with a minimum clearance to an appliance as specified in the
appliance manufacturer’s installation instructions.
5-613 Section 603.8 of the International Mechanical Code and the indicated subsections are amended to read as follows:
603.8 Underground ducts. Ducts shall be
approved for underground installation. Metallic Underground
ducts not having an approved protective coating shall be completely
encased in a minimum of 2 inches (51 mm) of concrete.
603.8.1 Slope. Ducts shall have a minimum slope of 1/8 inch per foot (10.4 mm/m) to allow drainage to a point provided with access.
603.8.2 Sealing. Ducts shall be sealed and secured prior to pouring the concrete encasement.
603.8.3 Plastic ducts and fittings. Plastic ducts shall be constructed of PVC having a minimum pipe stiffness of 8 psi (55 kPa) at 5-percent deflection when tested in accordance with ASTM D 2412. Plastic duct fittings shall be constructed of either PVC or high-density polyethylene. Plastic duct and fittings shall be utilized in underground installations only. The maximum design temperature for systems utilizing plastic duct and fittings shall be 150EF (66EC).
5-614 Section 607.4 of the International Mechanical Code is amended to read as follows:
607.4 Access and identification. Fire and smoke
dampers shall be provided with an approved means of access, large enough to
permit inspection and maintenance of the damper and its operating parts. To
permit inspection and maintenance of the damper and its operating parts there
shall be minimum 144 square inches access, when duct is less than 12” wide,
duct shall be equipped with a removable section of duct for access. Ceiling
access must have minimum 18”x18” access opening with unobstructed access to
duct access. The access shall not affect the integrity of
fire-resistance-rated assemblies. The access openings shall not reduce the
fire-resistance rating of the assembly. Access points shall be permanently
identified on the exterior by a label having letters not less than 0.5 inch
(12.7 mm) in height reading: FIRE/SMOKE DAMPER, SMOKE DAMPER or FIRE DAMPER. Access
doors in ducts shall be tight fitting and suitable for the required duct
construction.
5-615 Section 1003.3 of the International Mechanical Code is amended to read as follows:
1003.3
Welding. Welding
on pressure vessels shall be performed by approved certified
welders in compliance with nationally recognized standards.
5-616 Section 1004.6 of the International Mechanical Code and the indicated subsections are amended to read as follows:
1004.6 Boiler rooms and enclosures. Boiler rooms and enclosures and access thereto shall comply with the International Building Code and Chapter 3 of this code. Boiler rooms shall be equipped with a floor drain or other approved means for disposing of liquid waste.
1004.6.1 Emergency Shutoff. Any Boiler, whether for building heat or domestic hot water 200,000 BTU and above shall have an emergency shut off located outside the boiler room. The switch must be labeled with a red tag and white letters that reads “EMERGENCY BOILER SHUT OFF”.
Exception: When approved by the State Boiler Inspector, the switch may be located inside the boiler room.
Section 3. SEVERABILITY.
If any section, clause, sentence, or phrase of this ordinance is found to be unconstitutional or is otherwise held invalid by any court of competent jurisdiction, it shall not affect the validity of any remaining parts of this ordinance.
Section 4. EFFECTIVE DATE. This ordinance shall be in full force and take effect on January 1, 2011, and after its publication as provided by law.
Passed by the Governing Body of the City of Lawrence, Kansas, this ______day of ______________, 2010.
____________________________
Mike Amyx, Mayor
ATTEST:
__________________________________
Jonathan M. Douglass, City Clerk
Approved as to form and legality:
__________________________________
Toni Ramirez Wheeler, Director of Legal Services