[labnetwork] Filter type for the FCU

[Tribble, Thomas]

FCU = Fan Coil Unit.  It would be used to temper air, someplace before your cleanroom filters.  An FCU is not the appropriate equipment to supply air to a cleanroom as it typically would not have enough fan power to push are through an appropriate filter.  You may be able to upgrade the FCU filters to a MERV 13 [and I would] because any load you take off your HEPA final filters will save you money] but they cannot BE your final filter. An FCU would be used to address a identified heat load as an example. - TAT

From: labnetwork-bounces at mtl.mit.edu [mailto:labnetwork-bounces at mtl.mit.edu] On Behalf Of Morrison, Richard H., Jr.
Sent: Thursday, April 09, 2015 1:02 PM
To: Shivakumar Bhaskaran; labnetwork at mtl.mit.edu
Subject: Re: [labnetwork] Filter type for the FCU

Here is a good cross-reference guide.

We have MERV-8 as pre-filters in our makeup air unit they have plastic frames they are 2" thick. The final filter in the MAU is 4" thick Merv-15 Precision Cell ll 95% filters, again plastic frame. This air is then feed to the chases and passed into Fan Filter HEPA ceiling units. Hope this helps

I am not familiar with a FCU, what does that stand for.

Rick


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From: labnetwork-bounces at mtl.mit.edu<mailto:labnetwork-bounces at mtl.mit.edu> [mailto:labnetwork-bounces at mtl.mit.edu] On Behalf Of Shivakumar Bhaskaran
Sent: Thursday, April 09, 2015 11:34 AM
To: labnetwork at mtl.mit.edu<mailto:labnetwork at mtl.mit.edu>
Subject: [labnetwork] Filter type for the FCU

My building Facility Engineer was trying to change the filters in the FCU. He found that the FCU was installed with MERV8 type filter. I looked into the specs and it mentioned its used in commercial building.
For cleanroom the filter type is MERV20. Before we change , I want to consult with you guys on what type of filters do you use in your FCU. Our FCU is located in the Chase area of the Cleanroom ceiling.

The filter that was installed were Pre-pleat 40 LPD. The filter frame is cardboard, I am worried that this cardboard framed filter shouldn't be used in the FCU instead it should be metal frame or plastic.

-Shiva

Shivakumar Bhaskaran, Ph.D.
Searle CleanRoom Manager
The University of Chicago
5735 S.Ellis, Room 032
Chicago-60637
Ph:773-795-2297
https://searle-cleanroom.uchicago.edu/

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