Manual Zr is the new ANSI-recognized standard for residential zoning. Its development was spearheaded by the Air Conditioning Contractors of America (ACCA). As the newest manual in the ACCA library, Manual Zr is the result of combined efforts of original equipment manufacturers, zoning equipment producers, and HVAC contractors.
At the recent ACCA annual conference held in Las Vegas, Manual Zr was examined in two separate sessions, and manufacturers also weighed in on the importance of the new document.