To comply with the section 5.9, Particulate Matter Removal, the HVAC system needs to have a filter or an air cleaner having a minimum efficiency of MERV 6. Does this filter needs exactly be inside of the equipment (evaporator)? I.e. If I have a VRF system. Does the evaporator needs to have a filter with a minimum efficiency of MERV 6 or I can have an evaporator with low-efficient filter and the outdoor air and recirculated intake using high efficient filters with a minimum efficiency of MERV 6? Best regards

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Roger Chang

Principal, Energy and Engineering Leader

DLR Group | Westlake Reed Leskosky

LEEDuser Expert

267 thumbs up

Mon, 04/25/2011 - 20:40

I would recommend placing a MERV 6 filter on any recirculating equipment. This really helps protect the coil. Note that for IEQc5, you'll also want to have MERV 13 filters at main air-handling units, but due to a recent change in LEED 2009, these no longer have to be applied at terminal equipment like fan coil units, chilled beams, fan-powered boxes, etc.

Carolina Vergnano

LEED AP

Concremat

LEEDuser Basic Member

110 thumbs up

Thu, 05/05/2011 - 12:25

Thanks Roger, That's how I interpret, but I've asked this same question to a technical service of ASHRAE and he said that this system does not comply with the 62.1 section 5.9, saying that the filter needs to be right before th cooling coil. I would like to know if someone had ever submitted a project having this type of system and if the GBCI really accept.

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FAQs about IEQp1 :

ASHRAE 62.1 - 2007 section 5.9 Particulate Matter Removal

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