See all forum discussions about NC-2009 EAc4
 Subscribe to new posts about NC-2009 EAc4 Post a new question aboutNC-2009 EAc4
See LEEDuser’s guidance on NC-2009 EAc4»
FAQs about EAc4 :

We plan on pursuing this credit only if we need to do so to meet our certification target, i.e. if another credit we are counting on gets rejected. How late can we apply for this credit?

I'm working on a renovation project and we'll be keeping some of the existing equipment. Shoud we include these systems in our calculations?

Which portions of a VRF/VRV system should be considered for this credit?


For a split system, does the cooling capacity refer to the cooling power of the interior device (evaporator) or of the outdoor unit (condenser)?

What is the required timeline for completing a CFC phase-out for EAc4?

How can I document a longer equipment life (20 or 30 years) than what is listed in the LEED Reference Guide?

Do the requirements apply to portable fire extinguishers or only permanently installed building-wide fire suppression systems?

View answers »

Forum discussion

NC-2009 EAc4:Enhanced Refrigerant Management

SF6 in MV switchgears - Any LEED limits?

Default Avatar
Werner Sobek
WSGreenTechnologies GmbH
LEEDuser Basic Member
24 thumbs up

Does the SF6 (Sulphur Hexafluoride) insulating gas used to quench the arc in electrical power equipment (MV switchgears) need to be taken into consideration under the EAc4? The credit language states that only the refrigerants in HVAC&R equipment are considered in the calculation. Nonetheless, I just wanted to confirm this as SF6 is a greenhouse gas which has a very large GWP. From my review, there do not seem to be any other LEED credits that would limit the use of SF6. Does anyone know anything to the contrary? Thanks!

9
Post a reply

You rely on LEEDuser. Can we rely on you?

LEEDuser is supported by our premium members, not by advertisers.

Go premium for $15.95  »

Profile picture for user tristanroberts
Tristan Roberts
Representative
Vermont House of Representatives
LEEDuser Expert
7780 thumbs up

Fri, 02/04/2011 - 12:20

Lara, there is a bit more too this credit. It also prohibits fire suppression systems using CFCs, hydrochlorofluorocarbons (HCFCs) or halons. If SF6 is considered to be one of these, then using it counts here. If not, then I'd say it's not considered for this  credit, despite its high GWP.
Default Avatar
Veronika Sundberg
Environmental Engineer - Certification
Skanska Sverige AB
LEEDuser Basic Member
94 thumbs up

Mon, 01/16/2012 - 10:52

Is the LEED requirement for HVAC&R equipment OR for any refrigerant that creates HVAC&R for the buildings users? A product that is used for cooling the equipment (not get to warm for example as the one mentioned above) but it is NOT used in any equipment that creates HVAC&R for the building (air conditioner, freezer or comparable). Should that refrigerant be included or not? I do believe so, but please advise. Thank you!
Profile picture for user tristanroberts
Tristan Roberts
Representative
Vermont House of Representatives
LEEDuser Expert
7780 thumbs up

Sat, 02/18/2012 - 05:28

Veronika, the scope of the credit is defined in the credit language above. It's not a simple yes/no answer to your question. Among other things, fire suppression systems are considered.

Add new comment

To post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.