The ACCA, at its national convention in Kissimmee, Fla., introduced the latest version of the popular Manual J, the updated Version 8.

The Air Conditioning Contractors of America (ACCA) at its national convention in Kissimmee, Fla., introduced the latest version of the popular Manual J, the updated Version 8.

It was a collaborative effort by ACCA technical consultant Hank Rutkowski, and Glenn Friedman, a technical consultant for Taylor Engineering, Almeda, Calif.

Highlights of the new manual include ways to better calculate peak loads, as well as improved heat loss calculations for windows, multiple-zone calculations, duct load factor tables and cfm requirements including updated IAQ information. The manual is available on CD.

For more information visit www.acca.org.

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