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If my project is using air handlers that supply 100% outside air at a constant volume, do I still need to install an airflow monitoring device?

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NC-2009 IEQc1:Outdoor Air Delivery Monitoring

Airflow Monitoring Devices Specifications

Profile picture for user ahmed.younis
Ahmed Younis
Instrumentation and Control Engineer / LEED AP BD+C
Dar Al Handasah
LEEDuser Basic Member
4 thumbs up

Does the (airflow sensor) need to have any specifications other than the required accuracy (which is 15%) which was mentioned in the study guide?

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Profile picture for user jkmcfarland
John McFarland
Director of Operations
WorkingBuildings, LLC
LEEDuser Expert
39 thumbs up

Mon, 05/27/2013 - 16:25

Hi Ahmed, The accuracy of 15% is the only specified requirement. Here are a few other tips: 1) make sure it's measuring only outdoor air and not mixed air; 2) if its a pitot-tube type airflow sensor make sure it's downstream of filters on the outdoor air otherwise it's likely to get clogged; 3) be mindful that the alarm has to be programmed for 10% off set point so I'd recommend using a sensor at that is at worst 10% accurate (note, this is more accurate than required but I have no idea why the credit requires an alarm at 10% but an accuracy of 15%). Hope this helps. -John

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