Devices or piping arrangements that effectively restrict the natural tendency of hot water to rise in vertical pipes during standby periods. Examples are the U-shaped arrangement of elbows or a 360-de [..]

Midwest Insulation Contractors Association.

A single number part-load efficiency figure of merit calculated in accordance with the method described in Air Conditioning, Heating, and Refrigeration Institute (AHRI) Standard 550/590 referenced wit [..]

Formerly referred to as the American Society of Heating, Refrigerating and Air-Conditioning Engineers.

Adjusting air flow rates through air distribution system devices, such as fans and diffusers, by manually adjusting the position of dampers, splitter vanes, extractors, etc., or by using automatic con [..]

Adjusting water flow rates through hydronic distribution system devices, such as pumps and coils, by manually adjusting the position valves, or by using automatic control devices, such as automatic fl [..]

A device used in conjunction with an electric-discharge lamp to cause the lamp to start and operate under the proper circuit conditions of voltage, current, wave form, electrode heat, etc.

Basement walls that enclose heated spaces are part of the building envelope. Basement wall refers to the opaque portion of the wall (excluding windows and doors). To be considered a basement wall, at [..]

That portion of a wall in the building envelope that is entirely below the finish grade and in contact with the ground.

Basement or first-story walls (Section 802.2.8) associated with the exterior of the building that are at least 85% below grade.