Dear All,
I have two issues where I don't really know what would be the proper solution.
1. After about 10 years one of the compressors in a chiller went wrong and has been replaced. For this reason the refrigerant has been removed from the system by a professional and has been refilled together with a new compressor unit. This means the refrigerant has been added in that machine but not because of leakage problems and the "old" refrgirenat has been removed professionally so nothing is lost.
2. In a chiller one of the refrigerant circuits works with R422D refrigerant which is retrofit replacement for R22 and I beleive with more favourable environmental effects. However I cannot choose this type on the form.
Ben Stanley
Senior Sustainability ManagerWSP - Built Ecology
LEEDuser Expert
250 thumbs up
November 30, 2015 - 5:53 pm
Hi Norbert,
Did you ever get solid guidance for these issues outside of this forum?
For point 1, if the old compressor was decommissioned prior to the performance period, then it could be excluded from the calculation entirely. If not, include it and determine the leakage rate per the typical methodology. The calculation already accounts for a default leakage assumed for the end of life. For the new compressor, follow the guidance on the LEED form for new equipment.
To your second point, you can select "other" from the dropdown menu for refrigerants on the form. This will allow you to enter in data for variables like the ODP and GWP for R422d. Make sure to provide supporting documentation to support the values that you input on the form for that refrigerant.
Norbert Szircsak
Colliers International11 thumbs up
January 25, 2016 - 5:43 am
Hi Ben,
Thank you for your response, I didn't get any guidance outside the forum but fortunately I did the same what you suggested too.