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CI-v4 EQp1:Minimum indoor air quality performance

Air Flow Monitoring Device measuring two heat pumps

We have a LEED v4 ID+C for Retail project that has two water-source heat pumps (WSHP). One of these WSHPs has an OA CFM below 1000, so it is not required to have a monitoring device. However, the other has an OA CFM above 1000 and thus must have one. Our mechanical engineer requested that the monitoring device be installed so that it collectively measures the OA for both units. Would this be acceptable? If so, how should this be explained to reviewers?

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Profile picture for user Dave.Hubka_2
Dave Hubka
Practice Leader - Sustainability
EUA
LEEDuser Expert
510 thumbs up

Thu, 06/13/2024 - 18:29

it is my guess that GBCI will require outdoor airflow monitoring at each "air handling unit" that provides more than 1,000 cfm; and not allow one monitoring device that covers both water-source heat pumps.  if the WSHP with 1,000cfm+ outdoor air is constant volume, maybe go the fan status switch route???

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