ARLINGTON, Virginia – The Air Conditioning Contractors of America Educational Institute Standards Task Team announced the release of the revised ANSI/ACCA 11 Manual Zr – 2018 (Residential Zoning).
Manual Zr defines the requirements for designing zoned comfort systems for residential buildings, including single family detached and multifamily attached structures. Multifamily attached structures include duplexes, triplexes, town houses, row houses and small to medium size condominiums of three stories or less. Manual Zr also covers large multifamily, multi-floor buildings with dwellings that have their own comfort system, exhaust system, and outdoor air system.