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NC-2009 EAp3:Fundamental Refrigerant Management

new project with old HVAC

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Timo Marquez
Dir. Innovation
Green Soluce
LEEDuser Basic Member
13 thumbs up

I would like to know if the following complies with EAp3: We have a new construction (in process 2011) and the owner is purchasing an old HVAC systems that used R-12. Would we comply with EAp3 credit by changing the refrigerant to R-22?, or would we need to adapt the equipment compressor to use R-134A? It is not clear in the credit, if I can use older equipment for a NC and the equipment coming from a different source.

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Timo Marquez
Dir. Innovation
Green Soluce
LEEDuser Basic Member
13 thumbs up

Fri, 06/17/2011 - 15:33

Correction to the above question, the refrigerant of the HVAC being purchased is R406A which is a mix of R22 (55%), R142b (41%) and R600 (4%). Would R-406A be acceptable for crdit EAp3? It is not under the drop down menu of the form, but could it be used showing that it has low IDP and GWP values?
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Tristan Roberts
Representative
Vermont House of Representatives
LEEDuser Expert
7780 thumbs up

Tue, 11/22/2011 - 05:02

Timo, I would say that this is acceptable, as I don't believe any of those refrigerants are CFCs. On the LEED Online form, I would probably enter R-22 as the closest fit, and explain in the narrative how you documented it.

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