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  1. #1
    Join Date
    Nov 2018
    Location
    Saudi Arabia
    Posts
    30
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    Why provide this connection?

    Name:  IMG_8172.jpg
Views: 170
Size:  86.7 KBthis is package unit. Why provide connection between suction and discharge duct?


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  2. #2
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    17,750
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    Balancing or Static Pressure relief!

    Multiple zones inside?

  3. #3
    Join Date
    Nov 2018
    Location
    Saudi Arabia
    Posts
    30
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    Thread Starter
    Quote Originally Posted by pecmsg View Post
    Balancing or Static Pressure relief!

    Multiple zones inside?
    Yes.This is for school class rooms


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  4. #4
    Join Date
    Jan 2014
    Location
    New England
    Posts
    4,236
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    Looks like a manual adjustable type, can see the locking wing nut.

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