ASHRAE and ACCA to Cooperate on Load
– A new standard for determining load calculations will be developed
by ASHRAE in cooperation with ACCA, the Air Conditioning Contractors
of America, according to a joint statement from the organizations.
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
As part of the
agreement to cooperate, 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
announced 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.
standard for nonresidential load calculation procedures will improve
the accurate determination of system and equipment sizes for all
types of buildings,” said ASHRAE President Ronald P. Vallort, P.E.
“Having ACCA’s cooperation in development of the ASHRAE standard
reflects the importance of having HVAC contracting and engineering
communities work together in areas of mutual interest.”
standard will be designated ANSI/ASHRAE/ACCA Standard 183 when
“ACCA’s goal is
to ensure that contractors have access to the most accurate,
efficient and effective design standards,” said Greg Leisgang, ACCA
2005-2006 Chairman. “It is ACCA’s intent to assure that the proposed
standard meets the needs of contractors who would use this standard
for light commercial building load calculations.”
Standard 183P will be further developed by the expanded project
committee to incorporate the recommendations of both organizations.
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
Founded in 1894,
the American Society of Heating, Refrigerating and Air-Conditioning
Engineers (ASHRAE) is an international organization of 55,000
persons. Its sole objective is to advance through research,
standards writing, publishing and continuing education the arts and
sciences of heating, ventilation, air conditioning and refrigeration
to serve the evolving needs of the public.
Conditioning Contractors of America (ACCA) is the nationwide
association of heating, ventilation, air conditioning and
refrigeration contractors. The largest organization of contracting
businesses, ACCA has served the policy, educational, and technical
interests of the HVAC&R community for over 40 years.