Proposed Std 180 Standard 52.2 testing ASHRAE Update Proposed Std 180 Standard 52.2 testing

SPC 180 Standard Practice for Inspection and Maintenance of Commercial Building HVAC systems Targeted for government bldgs; public bldgs; schools; above three stories Not targeted for single family residential, industrial, or fabrication facilities Joint effort with ACCA

SPC 180 Purpose – establish minimum Inspection and Maintenance points for three goals Acceptable thermal comfort Energy efficiency Acceptable Indoor Air Quality

SPC 180 Makes building owner responsible party Requires inventory of all HVAC components Requires a comprehensive plan for intervals with established minimums Requires documentation of operation Written in CODE language

SPC 180 First review was done 2006 Comments were discussed in Quebec City Revisions voted on in Dallas - 2007 Pre-publish review deadline - 4/30/2007 Will likely go to ASHRAE publishing for 2007 Less than four years since its inception

Yes – filter maintenance intervals are in the standard

STD 52.2 Two issues of primary interest Dust Holding capacity Carries with it Arrestance for MERV 1-4 Conditioning Step Post review revisions Working to combine 52.1 and 52.2

STD 52.2 MERV 1 - 4 testing There has not been a defined method Arrestance and DHC language are being brought from 52.1 These values are being defined in 52.2 chart Note : DHC will be reported for all filters MERV 1-16 with a disclaimer that it is not an indicator of filter life in comparing filters –

STD 52.2 Conditioning Step with superfines Science of effects of diminished efficiency Two series of voluntary testing of electrets MERV 16 V-cell MERV 11 four-inch pleat Results from labs were similar

STD 52.2 Conditioning Step First review comments discussion in Quebec City June 2006 Revisions made in Jan 2007 – voted to move to publication review ending 4/30/07 Likely to be published by winter meeting

STD 52.2 changes in reporting Conditioning Step will be applied to ALL filters MERV 5-16 electret enhanced fiber or not. DHC will be reported on test document Final Pressure drop requirements will be dropped ie: 0.6” ; 1.0” ; 1.4”

Merging 52.2 and 52.1 Procedures are underway to remove the two Standard confusion by converging them 52.2 will add the language needed for MERVs 1-4 52.1 will drop “dust spot” from the Standard

STD 52.2-2007?? A more complete evaluation of filter efficiency for end user selection Future – International Standards? USA is currently a small player in this development If adopted could use IPA dipping as Conditioning Step

For more info on standards www.ashrae.org/technology/page/331#1241 Questions? For more info on standards www.ashrae.org/technology/page/331#1241