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2604.1.1 Plenums
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Foam plastics installed in plenums as interior wall or ceiling finish shall comply with Section 2603.7. Foam plastics installed in plenums as interior trim shall comply with Sections 2604.2 and 2603.7.
Related Code Sections
2604.1.1 Plastic, Plenums
Foam plastics installed in plenums as interior wall or ceiling finish shall comply with Section 2603.7. Foam plastics installed in plenums ...
Building Code 2018 of Illinois > 26 Plastic > 2604 Interior Finish and Trim > 2604.1 General > 2604.1.1 Plenums
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All supply and return ducts and plenums installed as part of an HVAC air distribution system shall be thermally insulated in accordance with Table ...
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Supply and return air ducts and plenums shall be insulated with not less than R-6 insulation where located in unconditioned spaces and where located ...
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2603.7 Plastic, Foam Plastic in Plenums as Interior Finish or Interior Trim
Foam plastic in plenums used as interior wall or ceiling finish, or interior trim, shall exhibit a flame spread index of 25 or less and a smoke ...
Building Code 2018 of Illinois > 26 Plastic > 2603 Foam Plastic Insulation > 2603.7 Foam Plastic in Plenums as Interior Finish or Interior Trim
R403.3.5 [RE] Residential Energy Efficiency, Building Cavities (Mandatory)
Building framing cavities shall not be used as ducts or plenums ...
2018 Illinois Energy Conservation Code Standards for Privately Funded Commercial Facilities and Standards for Residential Buildings > 4 [RE] Residential Energy Efficiency > R403 Systems > R403.3 Ducts > R403.3.5 Building Cavities (Mandatory)