HVAC Breaking News

Aug. 3, 2004: ASHRAE Approves Addenda To Residential IAQ Standard

August 3, 2004
/ Print / Reprints /
ShareMore
/ Text Size+
ATLANTA - The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) has announced that the first addenda to its residential ventilation standard have been approved for publication.

ANSI/ASHRAE Standard 62.2, "Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings," is an indoor air quality standard developed solely for residences. Addenda 62.2a and 62.2b were approved for publication at ASHRAE's 2004 Annual Meeting. The addenda are the first for the standard, which was published in 2003.

Addendum 62.2a removes combustion appliance backdrafting test requirements from the standard. The test was based on the best industry-accepted method found in the National Fuel Gas Code, but questions arose about its application to solid-fuel burning appliances, according to David Grimsrud, chair of the Standard 62.2 committee. There also was concern about it not being possible to perform the test until the home is completed, opening the potential for having to perform remedial balancing at a difficult stage of construction and sale.

Although the proposed addendum eliminates the test requirements, it sets an upper limit of exhaust flow to 15 cfm/100 square feet when natural-draft combustion appliances are present. It requires designers or installers to address the level of depressurization at a stage where the problem can be fixed more easily, Grimsrud said.

Addendum 62.2b changes the terminology "severe cold climate" to "very cold," which is now defined as one that has more than 9,000 65 degree F degree-days.

"This makes the standard's climate definitions consistent with the proposed revisions to the International Code Council climate zone definitions, which will simplify implementation of Standard 62.2 into code," said Grimsrud.

The primary impact of the change is to remove the Minneapolis-St. Paul metropolitan area from the "severe cold" climate category. As a result, this area no longer falls under the restriction in the standard forbidding the use of mechanical supply systems exceeding 7.5 cfm/100 square feet. The change has some effect on smaller urban areas as well.

Published addenda to ASHRAE standards are available for free at www.ashrae.org.

Publication date: 08/02/2004

Did you enjoy this article? Click here to subscribe to The NEWS Magazine

You must login or register in order to post a comment.

Multimedia

Videos

Image Galleries

2014 MCAA Annual Convention

Scenes from the 2014 MCAA Annual Convention in Scottsdale, Ariz.

Podcasts

NEWSmakers: Julian Scadden

Training is an ongoing process. Julian will discuss how you can generate maximum return on time and energy invested training by following a three part process. Listen to this podcast to get expert tips on training, tracking and follow up. 

More Podcasts

THE MAGAZINE

ACHRNEWS

NEWS 04-14-14 cover

2014 April 14

Check out the weekly edition of The NEWS today!

Table Of Contents Subscribe

SERVICE CALLS POLL

Which statement on service calls best applies to your business?
View Results Poll Archive

HVACR INDUSTRY STORE

plumbing-hvac.gif
2014 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

More Products

Clear Seas Research

 

Clear Seas ResearchWith access to over one million professionals and more than 60 industry-specific publications, Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

DON'T MISS A THING

Magazine image
 
Register today for complete access to ACHRNews.com. Get full access to the latest features, Extra Edition, and more.

STAY CONNECTED

facebook icontwitter iconyoutube iconLinkedIn i con