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FAQs about EAc1.3 :

If pursuing Option 2, what is the scope of the energy model if the space shares a central plant, and what type of software should be used?

For Option 1, Zoning and Controls, is a thermostat considered an “active control capable of sensing space demand"?

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CI-2009 EAc1.3:Optimize Energy Performance—HVAC

Active Controls with a Fan Coil Unit System

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Ciaran McCabe
Director
Passive Dynamics Sustainability Consultants
LEEDuser Basic Member
12 thumbs up

For a Fan Coil Unit system, with outdoor air being provided adjacent to the rear of the unit will the outdoor fresh air rate (from the main AHU) need to modulate to qualify as "active control" or is it enough for the fan coil unit to switch off the heating / cooling and ramp down to its lowest speed setting. I have read both CI 10242 and 10263 and I am still unsure of the minimum requirements.

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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Mon, 07/11/2016 - 21:26

As I read it you need either DCV or occupancy sensors. If your system switches off and runs at low speed based on occupancy it sounds like it might qualify.

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