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  1. #1
    Join Date
    Jan 2007
    Location
    Southeast, GA / Jacksonville, FL
    Posts
    263

    Head pressure control

    Need a head pressure control for a trane TCD120C300AA.

    Also if anybody knows, what compressors come in this unit, because i discovered after i installed one, that there were two different sized compressors installed in this unit.

  2. #2
    Join Date
    Sep 2006
    Location
    Ohio
    Posts
    456
    I would use a Johnson Controls / Penn Fan Cycling Control

  3. #3
    Join Date
    Dec 2005
    Location
    Southern California
    Posts
    76
    navyhydronics, check you email.

  4. #4
    Join Date
    Feb 2006
    Location
    SouthEastern Virginia
    Posts
    1,075
    ICM 325
    It might get loud!

  5. #5
    Join Date
    Dec 2006
    Location
    Middle Tennessee
    Posts
    11,347

    *

    Quote Originally Posted by navyhydronics View Post
    Need a head pressure control for a trane TCD120C300AA.
    install a P-66 Johnson controller on it



    .

  6. #6
    Join Date
    Dec 2004
    Location
    Central New York
    Posts
    70
    I agree P-66 all the way.

  7. #7
    Join Date
    Apr 2006
    Location
    mechanical room
    Posts
    1,255
    i thought that trane rtu was good down to 0'F, no ?

  8. #8
    Join Date
    Dec 2006
    Location
    Middle Tennessee
    Posts
    11,347

    *

    Quote Originally Posted by coolerinfrederick View Post
    i thought that trane rtu was good down to 0'F, no ?
    your right, they do have ambient sensors, which will control the o.d. motor/s

    but they don't work off of pressure



    .

  9. #9
    Join Date
    Nov 2006
    Location
    New Jersey
    Posts
    78
    Does this unit have econimizers? Also coolerinfrederick is correct, this unit is ok to run mechanical cooling down to 0 degrees ambient without head pressure control.

  10. #10
    Join Date
    Feb 2006
    Location
    SouthEastern Virginia
    Posts
    1,075
    Sorry fellas but the condenser motors in this unit will not tolerate the P-66. Now the P-266 may be a different story. The ICM-325 is less expensive, has a hard start feature, and is suitable for sleeve bearing motor. The P-66 needs an open ball bearing motor which costs a fortune.
    It might get loud!

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