Greetings,
There is a question regarding the requirements related to DCV – 6.4.3.8 and specifically Exception 4. – “Spaces where >75% of the space design OA is required for makeup air…”.
The question is: If we have a 100% OA situation, or DOA (Dedicated Outdoor Air) unit, do such cases belong to this exception and therefore providing DCV conditions are not required.
Your comments are highly appreciated.
Thanks.
Waleed AlGhamdi
Sustainability EnablerEskew+Dumez+Ripple
18 thumbs up
April 2, 2020 - 10:26 am
Depends if the air is make-up air or not. If it's a typical DOAS providing ventilation air to zone that have local temperature control, then most likely not. The exception mostly applies to spaces like commercial kitchens and labs etc.
Francesco Passerini
3 thumbs up
April 2, 2020 - 10:31 am
I am not a native English speaker, but make-up air should be air that is supplied into the room in order to reduce the air depression (and uncontrolled air infiltration) due to a hood (tipically in kitchens or labs, as Waleed said).