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Thread: VRF mechanical code conflict
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06-11-2014, 03:20 PM #1
VRF mechanical code conflict
Come Jan 1, 2015 it will be very difficult/impossible to install VRF equipment in New York City due to a change in the Mechanical code. No refrigerant lines can pass through a space that can be occupied, connected to a system with more than 10 pounds of refrigerant. This is due to their interpretation of Ashrae 15 safety guidelines. Is anyone out there seeing something like this ?
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06-11-2014, 06:44 PM #2
Re: VRF mechanical code conflict
Water chillers it is then !
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06-11-2014, 08:35 PM #3
Re: VRF mechanical code conflict
Hi Ralph
Can't say I'm familiar with Ashrae 15, as we work to different standards over here - BS EN 378.
Do you have a link to the code so we can have a look and comment?
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06-11-2014, 09:06 PM #4
Re: VRF mechanical code conflict
I think that you may be misinterpreting the standard.
It seems that you are now limited to 10lbs/1000sq.ft. so you need to calculate your total charge and see if it can leak into the smallest area that the leak may occur in.
Info gleaned from here..
https://www.google.co.uk/url?sa=t&so...U8NMkyS15YvVbA
Last edited by Brian_UK; 06-11-2014 at 09:10 PM.
Brian - Newton Abbot, Devon, UK
Retired March 2015
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07-11-2014, 10:38 PM #5
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07-11-2014, 10:46 PM #6
Re: VRF mechanical code conflict
I have seen this trane publication. From what I understand Ashrae 15 does not take into o account the refrigerant is heavier than air. I would like to send you what I have but don't know where to send it to or where to post it.