Publisher ‏ : ‎ ICC (distributed by Cengage Learning)

Publication Date ‏ : ‎ March 6, 2020

Edition ‏ : ‎ 1st

Language ‏ : ‎ English

ISBN-10 ‏ : ‎1609839641

ISBN-13 ‏ : ‎ 978-1609839642

Item Weight ‏ : ‎ 1.25 Pounds

Dimensions ‏ : ‎ 8.5 x 0.5 x 11 inches

The IMC establishes minimum regulations for mechanical systems through both prescriptive requirements and performance-based provisions. It is built on broad, flexible principles that support the use of new materials, technologies, and design approaches.

Key updates in the 2021 IMC include:

• Clothes dryer exhaust terminals must now be located at least 3 feet away from any building opening.

• Polyurethane spray-applied foam used on the exterior of ducts in attics and crawl spaces must comply with specific smoke and flame spread index limits.

• Fire and smoke dampers must be installed with approved access points to allow proper inspection and maintenance.

• Refrigerant tables have been revised to incorporate newly approved refrigerants.

• New requirements added for condensate termination identification markings and limitations on discharge locations.

• Approved factory-built combination intake/exhaust terminations are now allowed, easing previous separation distance requirements.

• Minimum mechanical ventilation rates for whole-house balanced ventilation systems have been reduced by 30%.

• Continuous exhaust operation is now required for manicure and pedicure stations.

• Grease ducts must include a horizontal cleanout within 3 feet of any horizontal discharge fan.

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