Dear all,
One of the credit requirements is that:
"The pressure differential with the surrounding spaces must be at least
5 Pa on average and 1 Pa at a minimum when the doors to the rooms are closed."
This was deemed a bit vague by the mechanical engineer: He claimed that if the exhaust system is designed for a differential of at least 5 Pa, then why worry about the 1 Pa?
Can someone please clarify the distinction between both numbers, and what's the proper way of designing the system to achieve the requirement?
Many thanks.
Matthew VanSweden
Director of Intersectional Professional Services55 thumbs up
October 18, 2011 - 4:00 pm
Anyone?
George, did you ever get any clarifications? I'm wondering what is meant by "surrounding spaces" -- does that mean the building on whole has to be positive? Or is it simple saying that when the door is open, you need a minimum of 5 Pa pressure differential.
Dylan Connelly
Mechanical EngineerIntegral Group
LEEDuser Expert
472 thumbs up
April 4, 2012 - 4:23 pm
George, Matthew,
Surrounding spaces are adjacent spaces and the door should be closed.
See my 4/4/12 comments for more information.