Article #1295 - Building Energy Codes Glossary
This listing contains terms and acronyms that are used throughout the BECP website and compliance tools.
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AAMA
Architectural Aluminum Manufacturers Association.
Above-Grade Wall
A wall that is not a below-grade wall.
Above-Grade Walls
Those walls (Section 802.2.1) on the exterior of the building and completely above grade or the above-grade portion of a basement or first-story wall that is more than 15 percent above grade.
AC
Alternate current.
ACH
Air changes per hour.
Addition
An extension or increase in the height, conditioned floor area, or conditioned volume of a building. The code applies to additions of existing buildings.
Adopting Authority
The agency or agent that adopts this standard.
AFUE
Annual fuel utilization efficiency; combustion heating equipment efficiency is expressed in terms of AFUE. New equipment typically ranges from about 78- to 96-percent AFUE. Higher AFUE ratings indicate more efficient equipment.
AHAM
Association of Home Appliance Manufacturers.
Air Economizer
A duct and damper arrangement and automatic control system that together allow a cooling system to supply outside air to reduce or eliminate the need for mechanical cooling during mild or cold weather.
Air Economizer Systems
Ducting arrangements and automatic control systems that allow a cooling supply fan system to supply outdoor (outside) air to reduce or eliminate the need for mechanical refrigeration during mild or cold weather.
Alteration
Any construction, renovation, or change in a mechanical system that involves an extension, addition, or change to the arrangement, type, or purpose of the original installation.
ANSI
American National Standards Institute.
Application Part-Load Value (APLV)
A single number part-load efficiency figure of merit calculated in accordance with the method described in ARI Standard 550 or 590 referenced with the method rating conditions described in those standards.
ARI
Air-Conditioning and Refrigeration Institute.
ASHRAE
American Society of Heating, Refrigerating and Air-Conditioning Engineers.
ASHRAE/IES Standard 90.1-1989
The American Society of Heating, Refrigerating and Air-Conditioning Engineers/Illumination Engineering Society Standard 90.1-1989.
ASME
American Society of Mechanical Engineers.
ASTM
American Society for Testing and Materials.
Attic and Other Roofs
All other roofs, including roofs with insulation entirely below (inside of) the roof structure (e.g., attics, cathedral ceilings, and single-rafter ceilings), roofs with insulation both above and below the roof structure, and roofs without insulation but excluding metal building roofs.
Authority Having Jurisdiction
The agency or agent responsible for enforcing this standard.
Auto Operated Control Damper
A damper which automatically opens and closes.
Automatic
Self-acting, operating by its own mechanism when actuated by some nonmanual influence, such as a change in current strength, pressure, temperature, or mechanical configuration.
Automatic Control Device
A device capable of automatically turning loads off and on without manual intervention.
Automatic Time-Switch Controls
Controls that automatically switch lights or equipment on and off.