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Ordinance No. G68-12
AN ORDINANCE
ADOPTING THE INTERNATIONAL MECHANICAL CODE 2012
AND THE NFPA 54 NATIONAL FUEL GAS CODE, 2012 EDITION, AS THE HEATING,
VENTILATING AND AIR CONDITIONING CODE OF 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the Elgin Municipal Code, 1976, as amended, be and is hereby repealed.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.
i 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 2012 as published by the International Code Council, Inc., and NFPA 54 National Fuel Gas
Code 2012, 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 2012 and NFPA 54 National Fuel Gas
Code 2012 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 2012 is amended and revised in the following respects:
Section 103 Department of Mechanical Inspection(sections 103.1 through 103.4,inclusive),
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.
Sections 109.1.1 through 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
�1�► room.
Section 403.3 Outdoor airflow 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 this section. 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 those
for a listed occupancy classification that is most similar in terms of occupant density,
activities and building construction; or 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 within 10 degrees Fahrenheit.
With the exception of smoking lounges,the ventilation rates in Table 403.3 are based
on the absence of smoking in occupiable spaces. Where smoking is anticipated in a
space other than a smoking lounge,the ventilation system serving the space shall be
designed to provide ventilation over and above that required by Table 403.3 in
accordance with accepted engineering practice.
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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 507.2.1.1 Operation, shall be amended to read as follows:
Type I hood systems shall be designed and installed to automatically activate the
exhaust fan whenever cooking operations occur. The activation of the exhaust fan
shall occur through an interlock with the cooking appliances, by means of heat
sensors or by means of other approved methods.
Section 510.7 Suppression required, shall be amended to delete Exception No. 2.
Section 602.3 Stud cavity and joist space plenums, shall be amended to read as follows:
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 2012,
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 2012, as amended by Chapter 16.04 of the Elgin Municipal
Code, 1976, as amended.
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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 such that it shall be entitled"Supply air
systems," and is further amended to read as follows:
Smoke detectors shall be installed in the supply air systems with a design capacity
greater than 2,000 CFM (0.94 m3/5), 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.
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' 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 2012 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 m3/5) 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:
1. Smoke detectors required by Sections 606.2.1 and 606.2.3 of this chapter
16.32.
2. An approved area smoke detector system located the supply air plenum
serving such units.
3. An area smoke detector system as prescribed in the exception to Section
606.2.1.
In all cases,the smoke detectors shall comply with sections 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.
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B. The 11-FPA 54 National Fuel Gas Code 2012 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 LCI/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 and
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-occupant of single-family detached residence.
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 NFPA Pamphlet No. 54, as amended by this chapter.
16.32.040 CONFLICTS WITH OTHER PROVISIONS.
In all instances where the provisions of these codes adopted in this chapter conflict with any other
provision of the Elgin Municipal Code regulating the same subject matter, 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.
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Section 4. That this ordinance shall be in full force and effect immediately after its passage
in the manner provided by law.
David J. Ka Quin, ."ayor
Presented: October 24, 2012
Passed: October 24, 2012
Omnibus Vote: Yeas: 7 Nays: 0 ; ;4 OF E
Recorded: October 24, 2012 /C.. ',. �`��ti`;
Published: October 26, 2012 d rr� '
Attest:
Kimberly Dewis, City Clerk
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