ASHRAE, ACCA to Cooperate on New Air-Conditioning Load Standard Jun 24, 2005

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A new standard for determining load calculations will be developed by the American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE) in cooperation with the Air Conditioning Contractors of America (ACCA), according to the organizations.

Proposed Standard 183P, Methods and Procedures for Performing Peak Heating and Cooling Load Calculations, released by ASHRAE for public comment in May, will be processed through ASHRAE’s standards writing procedures as an American National Standard.

As part of the agreement, the membership of the ASHRAE 183P committee will be expanded to include three members nominated by ACCA and the proposed standard will reference the cooling load temperature difference (CLTD) load calculation method provided in ACCA’s Manual N.

ACCA announced that it will withdraw its intent to submit a revision to its Manual N “Load Calculations for Non-Residential Buildings, Three Stories and Less” as an American National Standard.

The proposed standard will be designated ANSI/ASHRAE/ACCA Standard 183 when approved and will be further developed by the project committee to incorporate the recommendations of both organizations.

Proposed Standard 183P does not dictate a particular load calculation method or program but does establish a minimum level of care that would apply to any method. The proposed standard seeks to establish the criteria of an appropriate calculation process that will result in an accurate estimate of the air-conditioning and heating load in a building.

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