We are in process of submitting for certification a health care out patient clinic. The proposed buiding has air handling units are chilled water cooled with many devices. The air handlers are equipped with heat pipes, catalytic air cleaners, MERV 14 filters, and MERV 17 filters. Every air handler has an external energy recovery wheel assigned to use the air exhaust from patient areas to precool outside air. The isolation rooms in emergency area have an exhaust system with constant volume control, MERV 17 filtration, and UV light. I need help to determine which fan power credits I shall take and which I shall not take for the baseline building. I know is obvious that I have to take credit for fully ducted return/exhaust and MERV 13-15 filtration. But what about the others? I will appreciate your feedback.

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Sun, 02/09/2014 - 21:39

Please see Table 6.5.3.1.1B. No credit for heat pipes or UV lights. Not sure if catalytic air cleaners count under any of the devices listed. You can't take credit for heat recovery unless the baseline system is required to have heat recovery per G3.1.2.10.

Jean Marais

b.i.g. Bechtold DesignBuilder Expert

LEEDuser Basic Member

581 thumbs up

Mon, 02/10/2014 - 09:23

The catalytic air cleaner is just a different type of filter...filters clean air don't they. And if your heatexchanger is required in the baseline, I would also look at pressure drop credit here. And I would argue the same for the UV bank pressure drop wise. These going into the fan power calcs.

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