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  1. #1
    Join Date
    Jul 2011
    Location
    NEW YORK
    Posts
    58

    AHU Receiver Controller and Steam Valve?

    Dear Sirs/Madam,
    We found the temp on the hot deck hunting from 40 to 80F on these cold days. The Hot Deck Receiver Controller was replaced now the Preheat valve will not close. In going into the receiver controller, but air not coming out to valve.

    Any suggestions?

    Bob

  2. #2
    Join Date
    Sep 2006
    Location
    Alaska
    Posts
    475
    I would make sure the air line going to the preheat valve didn't have any leaks. A quick way to check this is to remove the line at the receiver controller and cap the output. If the output pressure goes up then you have a leak in the line or the steam valve actuator. I've also seen water in the branch lines that go through unheated spaces freeze which of course puts you in full heat.

  3. #3
    Join Date
    Jul 2011
    Location
    NEW YORK
    Posts
    58
    I have pressure going into receiver controller and none out? Would that then be the smart logic silver box?
    Bob C.

  4. #4
    Join Date
    Apr 2011
    Location
    Chicagoland Area
    Posts
    37
    Sounds like the r/c is not properly calibrated or have you checked to make sure the transmitter line is hooked up and reasons the correct temperature?

  5. #5
    Join Date
    Apr 2011
    Location
    Chicagoland Area
    Posts
    37
    Sorry, reading the correct temperature

  6. #6
    Join Date
    Jul 2001
    Location
    Canada
    Posts
    1,827
    What make / model is the Reciever Controller , and as 501miller stated has it been properly setup ( ACTION correct ) and calibrated they are not out of the box useable in most cases.

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