Air duct definition

Air duct means conduits or passageways for conveying air to or from heating, cooling, air conditioning or ventilation equipment, but not including the plenum.
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Air duct means any pipe, tube, conduit or enclosed space used or to be used in any building for the transmission of air in an artificial ventilation system;
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Air duct means a tube or conduit used to convey air. Air passages in self−contained systems are not air ducts.
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Examples of Air duct in a sentence

  • Air duct, panel, and plenum coverings and linings, and pipe insulation and coverings shall not flame, glow, smolder, or smoke when tested in accordance with a similar test for pipe covering, ASTM C 411, Standard Test Method for Hot-Surface Performance of High-Temperature Thermal Insulation, at the temperature to which they are exposed in service.

  • Air duct coverings shall not extend through walls or floors that are required to be fire stopped or required to have a fire resistance rating, unless such coverings meet the requirements of 5.4.6.4. 4.3.3.5* Air duct linings shall be interrupted at fire dampers to prevent interference with the operation of devices.

  • Standard for Safety Closure Systems for Use with Flexible Air Ducts and Air Connectors 4.3.3.3 Air duct, panel, and plenum coverings and linings, and pipe insulation and coverings shall not flame, glow, smolder, or smoke when tested in accordance with a similar test for pipe covering, ASTM C 411, Standard Test Method for Hot-Surface Performance of High-Temperature Thermal Insulation, at the temperature to which they are exposed in service.

  • Air duct smoke detectors shall be by Air Products & Controls or approved equal.

  • Reduce the final section, including the terminal assembly, by the appropriate amount i.e. Air duct Z - 81mm and the flue duct Z - 51mm.

  • Recycling industries recover the components for reuse, and the environmental aspect should not be ignored, and we should enact enabling, not disabling, responsible regulations.

  • Air duct for sufficient air circulation shall be provided if necessary.

  • Air duct smoke detecting devices, showing listing indicating complete range of air velocities, temperature and humidity expected at the device when the air handling system is operated.

  • Air duct systems shall be adjusted and balanced so that air quantities at outlets are as indicated and so that distribution from supply outlets is free from drafts and has uniform velocity over the face of each outlet.

  • Air duct smoke detectors for air handling unit shutdown as required.

Related to Air duct

  • Intermodal Rail Yard means a rail facility in which cargo is transferred from drayage truck to train or vice-versa.

  • Air ambulance means any aircraft specifically constructed, modified, or equipped and used for the primary purpose of responding to emergency calls and transporting critically ill or injured patients whose medical flight crew has at a minimum two attendants certified or licensed in advanced life support.

  • Air dried coating means a coating that is dried by the use of air or forced warm air at temperatures up to 1940F (900C).

  • Clean coal SNG facility means a facility that uses a

  • Inner Duct or “Conduit" shall mean any passage or opening in, on, under, over or through the Sprint Central Office Building cable or conduit systems.

  • Double Phase Aerosol Air Freshener means an aerosol air freshener with the liquid contents in two or more distinct phases that requires the product container be shaken before use to mix the phases, producing an emulsion.

  • Air navigation facility means any facility, other than one owned and operated by the United States, used in, available for use in, or designed for use in aid of air navigation, including any structures, mechanisms, lights, beacons, markers, communicating systems, or other instrumentalities or devices used or useful as an aid, or constituting an advantage or convenience to the safe taking off, navigation, and landing of aircraft, or the safe and efficient operation or maintenance of an airport, and any combination of any or all of such facilities.

  • Single Phase Aerosol Air Freshener means an aerosol air freshener with the liquid contents in a single homogeneous phase and which does not require that the product container be shaken before use.

  • Safety Management System means a systematic approach to managing safety, including the necessary organizational structures, accountabilities, policies and procedures;

  • Air Bag means an unaltered factory-installed supplemental restraint system designed to inflate upon impact to protect a person from bodily Injury during an accident.

  • Lateral Access Road Licence means a miscellaneous licence granted pursuant to subclause (6)(a)(ii) or subclause (6)(b) as the case may be and according to the requirements of the context describes the area of land from time to time the subject of that licence;

  • Ambient air means that portion of the atmosphere, external to buildings, to which the general public has access.

  • Lateral Access Roads has the meaning given in subclause (3)(a)(iv));

  • Stormwater management system means any equipment, plants,

  • Rechargeable Electrical Energy Storage System (REESS) means the rechargeable energy storage system that provides electric energy for electrical propulsion.

  • Transit-oriented facility means a facility that houses a transit station in a manner that promotes transit ridership or passenger rail use.

  • Sanitary sewer authority means the department, agency, or public entity with responsibility to review and approve the feasibility of sanitary sewer services or onsite wastewater systems.

  • Backflow preventer means a device or means to prevent backflow.

  • ACMA means the Australian Communications and Media Authority.

  • Ambient air quality standard means an established concentration, exposure time, and frequency of occurrence of air contaminant(s) in the ambient air which shall not be exceeded.

  • Air pollution control equipment means a mechanism, device, or contrivance used to control or prevent air pollution, that is not, aside from air pollution control laws and administrative regulations, vital to production of the normal product of the source or to its normal operation.

  • Electric bicycle means a “class 1 electric bicycle”, a “class 2 electric bicycle”, or a “class 3 electric bicycle” as defined in this section. (ORC 4511.01(RRR))

  • 911 system means the set of network, database and customer premise equipment (CPE) components required to provide 911 service.

  • Levee system means a flood protection system which consists of a levee, or levees, and associated structures, such as closure and drainage devices, which are constructed and operated in accordance with sound engineering practices.

  • IATA means the International Air Transport Association.

  • Sanitary Sewer System means all facilities, includ- ing approved LOSS, used in the collection, transmission, storage, treatment, or discharge of any waterborne waste, whether domestic in origin or a combination of domestic, commercial, or industrial wastewater. LOSS are only consid- ered sanitary sewer systems if they are designed to serve urban densities. Sanitary sewer system is also commonly known as public sewer system.