G17-09 _ r
Ordinance No. G 17-09
AN ORDINANCE
ADOPTING THE "INTERNATIONAL MECHANICAL CODE 2006"
AND THE NATIONAL FIRE PROTECTION ASSOCIATION PAMPHLET NO. 54
ENTITLED "INSTALLATION OF GAS APPLIANCES AND GAS PIPING,"
2006 EDITION, AS THE HEATING, VENTILATING AND AIR CONDITIONING CODE
FOR THE CITY OF ELGIN
BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF ELGIN, ILLINOIS:
Section 1. That Chapter 16.32 entitled"Heating,Ventilating and Air Conditioning Code"of
the Elgin Municipal Code, 1976, as amended, be and is hereby repealed.
Section 2. That Chapter 16.32 entitled"Heating,Ventilating and Air Conditioning Code"be
and is hereby added to the Elgin Municipal Code, 1976, as amended, to read as follows:
Chapter 16.32
HEATING, VENTILATING AND AIR CONDITIONING CODE
Sections:
• 16.32.010 Adopted - Exceptions.
16.32.020 Additions, Insertions, and Changes.
16.32.030 Permits Required
16.32.040 Conflicts With Other Provisions.
16.32.010 ADOPTED - EXCEPTIONS.
That two (2) certain documents, one (1)copy of each being on file in the office of the City Clerk of
the City of Elgin,and said documents being marked and designated as the International Mechanical
Code 2006 as published by the International Code Council, Inc., and Pamphlet No. 54 entitled
"Installation of Gas Appliances and Gas Piping," 2006 edition, as published by the National Fire
Protection Association (NFPA), be and are hereby adopted as and shall be known as the Heating,
Ventilating and Air Conditioning Code of the City of Elgin for regulating the design, construction,
quality of materials, erection, installation, alteration, repair, location, relocation, replacement,
addition to,use or maintenance of mechanical systems and low pressure gas piping and appliances;
and each and all of the regulations,provisions,penalties,conditions and terms of said International
Mechanical Code 2006 and NFPA Pamphlet No. 54 are hereby referred to,adopted,and made a part
hereof,as if fully set out in this ordinance,with the additions,insertions,deletions and other changes
prescribed in this chapter.
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• 16.32.020 ADDITIONS, INSERTIONS AND CHANGES.
A. The International Mechanical Code 2006 is amended and revised in the following respects:
Section 103 Department of Mechanical Inspection, shall be deleted in its entirety.
Section 109.1 Application for appeal, shall be amended to read as follows:
Appeals from the decision of the code official shall be made in accordance with the
provisions set forth in Chapter 3.60 of the Elgin Municipal Code, 1976,as amended.
Section 109.1.1 thru 109.7, inclusive, shall be deleted in their entirety.
Section 401.2 Ventilation required, shall be amended to read as follows:
Every occupied space shall be ventilated by natural means in accordance with Section
402 of this chapter 16.32 or by mechanical means in accordance with Section 403 of
this chapter 16.32. Buildings 10,000 square feet or larger shall require a ventilation
schedule (submitted with the mechanical prints), which shall include minimum
outdoor air requirements per table 403.3 and total supply air for each space and/or
room.
• Section403.3 Ventilation rate, shall be amended to read as follows:
Ventilation systems shall be designed to have the capacity to supply the minimum
outdoor airflow rate determined in accordance with Table 403.3 based on the
occupancy of the space and the occupant load or other parameter as stated therein.
The occupant load utilized for design of the ventilation system shall not be less than
the number determined from the estimated maximum occupant load rate indicated in
Table 403.3. Ventilation rates for occupancies not represented in Table 403.3 shall
be determined by an approved engineering analysis. The ventilation system shall be
designed to supply the required rate of ventilation air continuously during the period
the building is occupied, except as otherwise stated in other provisions of the code.
The temperature differential between ventilation air and the air in the conditioned
space shall not exceed 10 degrees Fahrenheit. Ventilation air that is part of the air
conditioning system is not required to be with in 10 degrees Fahrenheit.
Exception: The occupant load is not required to be determined, based on the
estimated maximum occupant load rate indicated in Table 403.3, where approved
statistical data document the accuracy of an alternate anticipated occupant density.
Section 602.3 Stud cavity and joist space plenums, shall be amended to read as follows:
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• Stud wall cavities and the spaces between solid floor joists to be utilized as air
plenums shall comply with the following conditions:
1. Such cavities or spaces shall not be utilized as a plenum for supply air.
2. Such cavities or spaces shall not be part of a required fire resistance rated
assembly.
3. Stud wall cavities shall not convey air from more than one floor level or more
than one room.
4. Stud wall cavities and joist space plenums shall comply with the floor
penetration protection requirements of the International Building Code 2006,
as amended by Chapter 16.04 of the Elgin Municipal Code, 1976, as amended.
5. Stud wall cavities and joist space plenums shall be isolated from adjacent
concealed spaces by approved fireblocking as required in the International
Building Code 2006, as amended by Chapter 16.04 of the Elgin Municipal
Code, 1976, as amended.
Table 603.4 shall be deleted and replaced with the following table:
• Duct size Galvanized
Gage No.
Round duct
6" diameter or less 30 GA
6" - 14" diameter 28 GA
over 14" in diameter 26 GA
Rectangular ducts
13" or less 26 GA
14 - 30" 24 GA
Over 30" per SMACNA Standards
(Sheet Metal and Air Conditioning Contractors'National Association, Inc.)
Section 603.5.1 Gypsum ducts, shall be amended to read as follows:
The use of gypsum boards to form air shafts (ducts) shall be limited to return air
systems where the air temperatures do not exceed 95° F (35° C) 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.
Section 603.6.1.1 Duct length, shall be amended to read as follows:
Flexible air ducts shall not exceed ten (10) feet in length.
Section 603.6.2.1 Connector length, shall be amended to read as follows:
Flexible air connectors shall not exceed ten (10) feet in length.
Section 606.2.1 Return air systems, shall be amended to read as follows:
Supply air systems. Smoke detectors shall be installed in the supply air systems with
a design capacity greater than 2,000 CFM (0.94 m3/s), and shall be installed in the
supply air duct or plenum downstream of any heating coils,cooling coils or fans and
prior to any take offs or divisions in the duct.
Exception: Smoke detectors are not required in the supply air system where the space
served by the air distribution system is protected by a system of area smoke detectors
in accordance with the International Building Code 2006 as amended by Chapter
16.04 of the Elgin Municipal Code, 1976, as amended. The area smoke detector
• system shall comply with Section 606.4 of this chapter 16.32.
Section 606.2.2 Common supply and return air systems, shall be amended to read as follows:
Where multiple air-handling systems share common supply or return air ducts or
plenum with a combined design capacity greater than 2,000 CFM (0.94 m3/s) the
supply air system shall be provided with smoke detectors in accordance with Section
606.2.1 of this chapter 16.32.
Exception: Individual smoke detectors shall not be required for each variable air
volume(VAV)zone unit or VAV-type fan-powered terminal unit,provided that such
units do not have an individual design capacity greater than 2,000 CFM (0.94 m3/s)
and will be shut down by activation of one of the following:
A. Smoke detectors required by Sections 606.2.1 and 606.2.3 of this chapter
16.32.
B. An approved area smoke detector system located the supply air plenum
serving such units.
C. An area smoke detector system as prescribed in the exception to Section
606.2.1.
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• In all cases, the smoke detectors shall comply with Section 606.4 and 606.4.1 of
this chapter 16.32.
Section 606.2.3 Return air risers, shall be amended to read as follows:
Where return risers serve two or more stories and are part of a 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 return air riser and any air ducts or plenums. Supply smoke
detectors shall also be installed as required by section 606.2 of this chapter 16.32.
Section 606.3 Installation, shall be amended to read as follows:
Smoke detectors required by this section shall be installed in accordance with NFPA
72. The required smoke detectors shall be installed to monitor the entire airflow
conveyed by the system including return air, supply air and exhaust or relief air.
Access shall be provided to smoke detectors for inspection and maintenance.
B. The National Fire Protection Association Pamphlet No. 54 entitled "Installation of Gas
Appliances and Gas Piping,"2006 edition, is amended and revised in the following respects:
• Section 5.6.3.4 Corrugated Stainless Steel, shall be amended to read as follows:
Corrugated stainless steel tubing shall be listed in accordance with ANSI LCl/CSA
6.26, "'Fuel Gas Piping Systems Using Corrugated Stainless Steel Tubing"and shall
be used only where required by specific manufacturers' installation instructions.
All interior gas piping is required to be schedule 40 black iron pipe (ASTM A 53)
from the meter to the appliance/equipment connector with the following exceptions:
An approved flexible connector may be used for appliances such as clothes dryers,
cook tops and stoves provided that the connectors are UL approved and the
manufacturer's instructions do not prohibit such a connection.
16.32.030 PERMITS REQUIRED.
A. A permit is required to install or alter any heating, ventilating or air conditioning equipment
in the city. Application shall be made to the Department of Code Administration &
Development Services. Upon approval, a permit shall be issued and the fees as required in
Chapter 16.48 of the Elgin Municipal Code, 1976, as amended, shall be paid.
B. Permits for work to be performed under this code shall be issued only to warm air heating
• contractors, as defined in Chapter 16.02 of the Elgin Municipal Code, 1976, as amended,to
. contractors doing work based on plans and specifications sealed by an architect or
mechanical engineer,or the owner or lessee-occupant of one-family or two-family dwellings.
C. Permits shall be required to install or alter any ductless furnace,which shall be in conformity
with the regulations as set forth in the National Fire Protection Association Pamphlet No.54.
16.32.040 CONFLICTS WITH OTHER PROVISIONS.
In all instances where the provisions of these codes adopted in this chapter conflict with specific
provisions of the building, electrical, plumbing or fire prevention codes of the city, either as
presently adopted or to be adopted or amended in the future, the most restrictive and stringent code
shall apply.
Section 3. That all ordinances or parts of ordinances in conflict with the provisions of this
ordinance be and are hereby repealed.
Section 4. That this ordinance shall be in full force and effect immediately after its passage
in the manner provided by law.
d Schock, Mayor
• Presented: April 8, 2009
Passed: April 8, 2009
Omnibus Vote: Yeas: 6 Nays: 0
Recorded: April 9, 2009
Published: April 10, 2009
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Attest:
Diane Robertson, City C rk