ASHRAE SSPC 52.2

1. ASHRAE SSPC 52.2 Next Meeting – 6/24/06 Quebec City Notes from Phil Winters, CAFS

2. Current Activities • Interpretation request – family of filters • Addendum a – Reference filter check • Addendum b – Incorporating elements of 52.1 into 52.2

3. Current Activities (con’t) • Addendum c – Conditioning • Released for public review on 10/22/04 (45 day review) • 105 comments from 34 responders • Consolidated responses • Substantive changes? • Path forward

4. Consolidated Comments • Supportive comments • All filters conditioned • KCl vs. “real world” aerosol • Conditioning is more aggressive • Effect on DHC and Weight Gain • Reproducibility not proven • Cost impacts on industry

5. Consolidated Comments (con’t) • Defer until more data is available • Objectives of 1190-RP not met • Technical issues (Laskin nozzles, etc...) • Effect on electrets is punitive • Based on tests of only two filters, but not all electrets are the same

6. Consolidated Comments (con’t) • Reporting Initial and Minimum • Change the maximum CT • Loss of electret benefits • Consider the EN 779 approach • Introduce average efficiency • Eliminate DHC & intermediate efficiency steps

7. Path Forward • ASHRAE Summer Meeting – Quebec City • SSPC 52.2 Meeting Saturday, 6/24/06 • Addendum b revised and 2nd Public Review? • Addendum c revised and 2nd Public Review?

8. ISO/TC142 Meeting Milan, Italy 1/11/06 Notes from Phil Winters, CAFS

9. 2 Working Groups Formed • WG03 – General Ventilation Filters • Chair / Convener – Jan Gustavsson (Sweden) • This work is already in progress. It was transferred from ISO/TC117/WG08. As part of the transfer, the schedule of this WG was moved to allow more time before the Standard must be published. • The WG is developing a Standard that is based on EN 779, with modifications to accommodate some of the content in ASHRAE Standard 52.2. • There was a separate day-long meeting for this WG on 1/12/06. See separate minutes. • Some discussion as to whether or not to include Residential air filters. A Task Group was formed.

10. WG04 – HEPA and ULPA Filters • Chair / Convener – R. Vijayakumar (USA) • It is assumed that this WG will use IEST RP-CC001.4, CC007.1, CC021.2 and CC0034.2, along with CEN EN 1822 as the basis for an ISO Test Standard. There may be other Standards to include in this list, but they were not discussed.

11. 6 Task Groups Formed • The goal of the Task Group is to research a specific area of filtration and recommend a course of action to TC142. Those courses of action include: • Form a full WG and proceed with development of an ISO document. (Standard, Technical Specification or Technical Report) • Incorporate the topic into the work of an existing WG. This may take the shape of an Annex to an ISO document or it could be something else. • Continue to evaluate this topic. A TC can place several items in a Preliminary stage, while they get all the information together. There is no deadline on how long something can sit in this Preliminary stage. • Note that, in all cases, the finished ISO document MUST be completed within 5 years of the start date. • Drop the topic from consideration

12. TG01 – Terminology • Chair – John Dymet (UK) • Probably an ISO Technical Report, based on a CEN document that is nearing completion that covers this same scope. • TG02 – Incorporation of US Residential filters into an ISO Standard • Chair – Phil Winters (USA) • Since the US is by far the largest market for low-efficiency residential filters, TC142 felt that the US should recommend how best to accommodate these filters into ISO Standards. • Note that there is an assumed link within the European participants that all residential filters are low efficiency (MERV 1-4) and that all low-efficiency filters are used in residential applications. We will need to decide if we are going to recommend a Residential filter accommodation or a low-efficiency filter accommodation.

13. TG07 – In-Service Behavior of Air-Cleaning Devices • Chair – Don Thornburg (USA) • It is assumed that the document from this TG would be a Technical Specification or a Technical Report, not a Standard. • This work would be based on EUROVENT 4/10 and the work being done in ASHRAE GPC 26. • TG08 – Gas-Phase Contamination Removal Devices • Chair – Keith Morris (UK) • It was noted that the scope of AMC contamination is as broad as particulate contamination and that this TG will need to decide if they will try to create a document that covers all aspects of AMC control (e.g. power plant emissions to clean rooms).

14. TG09 – Air Intake Filters for Stationary Gas Turbines • Chair – Ulf Johansson (Sweden) • It was noted that there are other ISO TCs that are responsible for mobile Gas Turbines, so they are out of the scope of this TC. • TG12 – UV-C Devices (or “Sterilization Devices” or “Antimicrobial Devices”) • Chair Derald Welles (USA) • The first task of this group will be to decide on a title that has a broader scope. The TC was not interested in creating a WG for just UV-C devices alone. The scope needs to include other methods for eliminating viable microbes in an air handling system.

15. ISO/TC142 MeetingWG03 – General Ventilation Filters Milan, Italy 1/12/06 Notes from Phil Winters, CAFS

16. Overview • Test method only – No classification • Based on EN 779, with modifications to accommodate some of the content in ASHRAE Standard 52.2. • Some discussion as to whether or not to include Residential air filters. A Task Group was formed. • Three test methods identified • Efficiency with Loading • Efficiency with Preconditioning • Arrestance • ISO/TC142 vote before Quebec City

17. Important Considerations • The time frame for this is very tight. • Jan has asked for all testing to be completed by 2/27/06. • Final draft of CD to main ISO/TC142 by 6/12/06 (before our next ASHRAE meeting). • Vienna Agreement requires that Europe drop its Standard whenever an ISO Standard covers the same topic. Therefore, if/when this ISO Standard is approved, • EN 779 will be withdrawn • ASHRAE 52.2 could live on forever The European participants are very aware of this

18. Thank you