ASHRAE 90.1-2007 - 6.4.3.1.1 COMPLIANCE CRITERIA

RICARDO HERNANDEZ

LEED PM

SPACE

LEEDuser Basic Member

0 thumbs up

December 12, 2013

Does anyone know how stringent is the criteria to achieve compliance with the 6.4.3.1.1 Zone Thermostatic Controls for a Commercial Interiors? I have a Project which HVAC system in the open office is not divided or separated, what I mean is that the open office area have VAV's that control the whole open office and is not divided in a perimeter system and an inside system, does this comply with the requirements of the mandatory provisions or how stringent is the compliance with this point. Do I strictly need to have a VAV with a thermostatic control to offset only building envelope loads and another to offset inside loads even tough there are no floor to ceiling divisions? It's an open office. The credits for efficiency are not being pursued only the compliance with the prerequisite Thanks a lot

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Tue, 12/31/2013 - 15:50

Not the way I read it. The separation of a perimeter/interior space is listed as an exception so it is not required. 6.4.3.1.1 requires a thermostatic control for each zone. Perimeter systems meeting the criteria in the exception can also have a control but this does not mean they are required to do so. It sounds like your design is fine.