See all forum discussions about NC-2009 IEQc1
 Subscribe to new posts about NC-2009 IEQc1 Post a new question aboutNC-2009 IEQc1
See LEEDuser’s guidance on NC-2009 IEQc1»
FAQs about IEQc1 :

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?

View answers »

Forum discussion

NC-2009 IEQc1:Outdoor Air Delivery Monitoring

Outdoor Air monitoring devices

Default Avatar
TOMAS URIBE
PROJECT MANAGER
SOLUCIONES ENERGETICAS SOSTENIBLES
LEEDuser Basic Member
7 thumbs up

Could a presure deferential sensor used as outdoor air monitoring devise?. It is a DOAS with diferential presure sensor wich will control the speed fan in order to deliver the same outdoor air when the filter gets old and the the presure increased.

0
Post a reply

You rely on LEEDuser. Can we rely on you?

LEEDuser is supported by our premium members, not by advertisers.

Go premium for $15.95  »

Mon, 05/02/2016 - 19:31

This is not an acceptable solution for a variable volume system. If you are using a constant volume system, you may use a system status as a monitor.
Default Avatar
TOMAS URIBE
PROJECT MANAGER
SOLUCIONES ENERGETICAS SOSTENIBLES
LEEDuser Basic Member
7 thumbs up

Tue, 05/03/2016 - 13:26

Hi Andrew, it is a constant volume system. The diferential pressure sensor and the VRF adjust the fan speed in order to mantain the same cfm. As the filter gets dirty the pressure will increase and the fan will speed up to maintain the same air flow.

Tue, 05/03/2016 - 16:41

Just use the VFD status to comply with the credit.

Fri, 07/22/2016 - 19:40

Hi Andrew, So a project can use the VFDs to monitor fan status (at 100% outside air at constant volume) and not have to include CT monitors? Thanks

Fri, 07/22/2016 - 20:23

If it is a constant volume system, the VFD has a CT built in for status.

Add new comment

To post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.