The design for a current building involves installing CO2 sensors in the return duct of each densely occupied space rather than inside of the space itself. Since the LEED v4 BD+C handbook states Co2 monitors must be between 3 and 6 feet above the floor, does that mean the CO2 monitors for this project are ineligible because they are too high up?

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Pallavi Mantha

ARUP

LEEDuser Basic Member

0 thumbs up

Tue, 08/28/2018 - 20:11

Hi Edgar, did you ever get an answer on this? I'm having the same issue on a current project. Thanks!

Gustavo De las Heras Izquierdo

LEED Expert

LEEDuser Basic Member

169 thumbs up

Wed, 08/29/2018 - 15:58

Hi there, I think we are dealing with two different requirements: -CO2 sensors located between 3 and 6 feet above floor level are intended to trigger an alarm in naturally ventilated spaces so that occupants can open the operable windows to ventilate the room. -CO2 sensors in the return duct are necessary to comply with a Demand Controlled Ventilation (DCV) which provides outdoor air when a densely occupied space is in use and provides minimum airflow in order to save energy when the space is empty (auditoriums, theatres...). I hope that helps,

Edgar Arevalo

Energy Engineer

ads ENGINEERS, DPC

LEEDuser Basic Member

21 thumbs up

Wed, 08/29/2018 - 17:34

Oh wait... nevermind guys. I just took a look again at the LEED v4 BD+C handbook, under page 652, and it says "CO2 sensors installed in return air ducts cannot be used to meet the requirements" Pallavi, looks like there's the answer. Now I gotta get back to the designer to change installation of those sensors.

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