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NC-2009 EAc4:Enhanced Refrigerant Management

Upload requirements for EA Cr 4: Enhanced Refrigerant Management

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Kathy Wislocky
Project Manager
Wilson Architects
LEEDuser Basic Member
2 thumbs up

Hi, I'm hoping to get some feedback on what is actually required to be uploaded in support of table 4-1. Our MEP engineer is claiming that the numbers he provided in table 4.1 were default life value numbers ( as opposed to non-default life value numbers); and the upload requires documentation that support the non-default values only. We are not able to meet compliance without any uploads to the form. Are we missing something here? What is actually required to be submitted for this credit?

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Tue, 06/16/2015 - 18:57

People seem to get confused by Table 2 in the Reference Guide, which lists maximum refrigerant charge that will still meet the credit, per refrigerant type. These are not defaults, there are no defaults. You should fill out the table with the actual refrigerant charge for each piece of equipment. You don't typically need to submit the equipment cut sheets, but you should have them handy in case the reviewer asks for back up info. For split systems, don't forget to include all the refrigerant used to fill the piping.
Profile picture for user kathywislocky
Kathy Wislocky
Project Manager
Wilson Architects
LEEDuser Basic Member
2 thumbs up

Thu, 06/25/2015 - 02:40

Hi Chris! Thanks for giving us some feedback on this credit. I have a follow up question for anyone who can answer. If the refrigerant charge (Rc) number entered into the Refrigerant Impact Calculation (Table EAc4-1) for each piece of equipment listed is more than the amount listed in the reference guide, will we only meet the credit if the life of the equipment is longer than the typical years listed? We are meeting the average refrigerant impact per ton, but our Rc numbers seem several times higher than what's listed in Table 2 from the reference guide. Any feedback on this would be great! Thanks

Thu, 06/25/2015 - 12:57

1) you are going to have a hard time convincing the reviewers your equipment has a longer than normal life. 2) If the Rc for each is more than the reference guide table, you are not going to get the credit.
Profile picture for user kathywislocky
Kathy Wislocky
Project Manager
Wilson Architects
LEEDuser Basic Member
2 thumbs up

Fri, 06/26/2015 - 02:13

Thanks!!!!

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