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// CODE SNIPPET

402.4 Outdoor Air Intake Protection

Uniform Mechanical Code 2018 of Nevada > 4 Ventilation Air > 402.0 Ventilation Air > 402.4 Outdoor Air Intake Protection
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Required outdoor-air intakes shall be covered with a screen having not less than 1/4 of an inch (6.4 mm) openings, and shall have not more than 1/2 of an inch (12.7 mm) openings.

402.4.1 Weather Protections

Outdoor air intakes that are part of the mechanical ventilation system shall be designed to manage rain entrainment, to prevent rain intrusion, and manage water from snow in accordance with ASHRAE 62.1.

Related Code Sections


402.4 Ventilation Air, Outdoor Air Intake Protection
Required outdoor-air intakes shall be covered with a screen having not less than 1 / 4 of an inch (6.4 mm) openings, and shall have not more than ...
Uniform Mechanical Code 2018 of Nevada > 4 Ventilation Air > 402.0 Ventilation Air > 402.4 Outdoor Air Intake Protection
R303.6 Building Planning, Outside Opening Protection
Air exhaust and intake openings that terminate outdoors shall be protected with corrosion-resistant screens, louvers or grilles having a minimum ...
Residential Code 2012 of Nevada > 3 Building Planning > R303 Light, Ventilation and Heating > R303.6 Outside Opening Protection
R303.6 Building Planning, Outside Opening Protection
Air exhaust and intake openings that terminate outdoors shall be protected with corrosion-resistant screens, louvers or grilles having an opening ...
Residential Code 2018 of Nevada > 3 Building Planning > R303 Light, Ventilation and Heating > R303.6 Outside Opening Protection
6.4.3.4.2 Heating, Ventilating, and Air Conditioning, Shutoff Damper Controls
All outdoor air intake and exhaust systems shall be equipped with motorized dampers that will automatically shut when the systems or spaces ...
Energy Standard for Buildings Except Low-Rise Residential Buildings 2016 of Nevada > 6 Heating, Ventilating, and Air Conditioning > 6.4 Mandatory Provisions > 6.4.3 Controls and Diagnostics > 6.4.3.4 Ventilation System Controls > 6.4.3.4.2 Shutoff Damper Controls
E 503.4.6.4.1 Sustainable Practices, Shutoff Damper Controls
Outdoor air intake and exhaust systems shall be equipped with motorized dampers that will automatically shut when the systems or spaces served ...
Uniform Mechanical Code 2018 of Nevada > E Sustainable Practices > E 503.0 Heating, Ventilation, and Air-Conditioning — Other Than Low-Rise Residential Buildings > E 503.4 Mandatory Provisions > E 503.4.6 Zone Thermostatic Controls > E 503.4.6.4 Ventilation System Controls > E 503.4.6.4.1 Shutoff Damper Controls
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