ASHRAE has proposed an alternate compliance path for evaluating ventilation systems in existing buildings as part of their latest round of public comments on proposed changes to their standards for Indoor Air Quality.
This change is one of six addenda to the ANSI/ASHRAE Standard 62.1-2013, Ventilation for Acceptable Indoor Air Quality that are currently open for public comment from Sept. 5 to Oct. 5, 2014.
According to the proposed change documentation, “Responding to increasing interest in sustainability in existing buildings, ASHRAE Standard 62.1 is cited frequently as a criterion for evaluating ventilation systems in existing buildings. Examples include LEED-EBOM, ENERGY STAR, and bEQ. Some building categories such as K-12 schools and office buildings are frequently renovated and often have multiple zone systems that provide HVAC to similar space types.
The scope of the standard (Section 2.4) states in part that “the provisions of this standard are not intended to be applied retroactively when the standard is used as a mandatory regulation or code.”
The proposed addendum provides an alternate path of compliance with Standard 62.1 that is needed by the marketplace for those situations where information required to determine system performance is unavailable or for smaller facilities with straightforward multiple zone applications.