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  1. #1
    Join Date
    Jan 2007
    Location
    N.E. KS
    Posts
    717

    McQuay LSL128DH Serial 3TM00552-04

    Any suggestions on reducing the output cfms on this air handler?

    Store is being split into two seperate locations and the system will be close to halved.

    Looking for a 30-50% reduction. Not sure of all the details yet but thought I would start asking now.

    What other info might you need?
    Some people know the cost of everything but the value of nothing.

  2. #2
    Join Date
    Jul 2007
    Location
    Virginia
    Posts
    5,528
    I you don't have it, here is the Installation and Maintenance Data Manual for this unit. Maybe you can find something in it to help.
    Instead of learning the tricks of the trade, learn the trade.

  3. #3
    Join Date
    Jun 2006
    Location
    New Jersey
    Posts
    4,336
    Quote Originally Posted by mdharris68 View Post
    Any suggestions on reducing the output cfms on this air handler?

    Store is being split into two seperate locations and the system will be close to halved.

    Looking for a 30-50% reduction. Not sure of all the details yet but thought I would start asking now.

    What other info might you need?
    Change the RPM. RPM is directly related with CFM. Need 50% less CFM, slow the RPM 50%.

    So you need to either decrease the datum of the drive sheave or increase the datum of the driven sheave or both. You just want to make sure you have enough belt contact on the sheaves.

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