We are using the 62MZ Calculator spreadsheet for an office building. The HVAC system does not utilize VAV boxes or any kind of terminal unit. Rather, it just feeds directly into each space. How do we fill in the CFM (Vdzd) cell for the critical zones? Do we need to calculate it from the space load, measure it, or can we just use a conservative engineering rule of thumb? Thank you in advance for any help here.

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Ante Vulin

Sustainability Manager

YR&G

LEEDuser Basic Member

55 thumbs up

Wed, 01/30/2013 - 14:29

You may be able to use a rule of thumb, but measuring (hopefully only for a few critical zones) or consulting any as-built or design mechanical plans would ensure that the building is actually supplying sufficient outside air.

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