In the requirements of this credit, the reference guide states that if CFC-based refrigerants are maintained in the building, reduce annual leakage to 5% or less, and total leakage over the remaining life to less than 30% of its refrigerant charge.
However, there is no place in the LEED Online form that asks for documentation regarding this. In addition, there are no uploads whatsoever required for this credit. Do you simply have to fill-in the credit form and the table in the form based on the results of the chiller replacement and refrigerant conversion to comply with this credit, even if you use R-11, or will reviewers ask for further documentation of the leakage rate?
Tristan Roberts
RepresentativeVermont House of Representatives
LEEDuser Expert
11478 thumbs up
May 20, 2010 - 1:59 am
Yes, it looks like that's the case. I double-checked both the EAp3 and EAc5 LEED Online credit forms, and they are remarkably simple in just focusing on the equipment inventory. The leakage rate documentation is a good idea to compile and I would have it in my back pocket in case the reviewer asks for it.
susan eguia
LEED Coordinator/Construction Administrator/Business DevelopmentBuilding Solutions Group, Inc.
59 thumbs up
February 17, 2011 - 11:30 am
We have 7 HVAC equipment, 6 of them are R-22 and 1 R-410A, is it acceptable for EAp3 and EAc5 requirements? Or we really need to replace all of them under R-410A just to comply on the requirement.
thanks,
Jason Franken
Sustainability ProfessionalLEEDuser Expert
608 thumbs up
February 17, 2011 - 12:13 pm
R-22 is an HCFC so it will be fine for the prerequisite. There's a chance you could earn EAc5, but it will really depend on your leakage rates over the 12-month period preceding your application submittal.
Austin Evans
Temporary WorkerScroll Compressors LLC
53 thumbs up
July 26, 2011 - 12:14 pm
On page 221 of the LEED Reference Guide it shows the formula for calculating Leakage Rate....a part that confuses me is the "Days Since Refrigerant Last Added". Is this the number of days between the date last added and the current date, or the date last added and the date last added before that?
Austin Evans
Temporary WorkerScroll Compressors LLC
53 thumbs up
July 26, 2011 - 12:18 pm
Also when entering the data for LR does this only pertain to activities for the last 12 months before submittal? I have over 90 RTUs and only 7 or 8 will have problems in that time span so I would just put the .5% for the rest?
Andy Rhoades
PartnerLeading Edge Consulting
56 thumbs up
April 2, 2012 - 9:14 pm
I am also having an issue finding a place to document the leakage rate (compliance of EPA's rule 608.) The only option available looks like "alternative compliance approach". Is this what others are going? We've never had this question come back before.