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  1. #1
    Join Date
    Jun 2004
    Posts
    854

    Help on Sizing beer cooler for proper btu

    Perlick
    M# CS064EUL
    SN# 410894

    I have two 3 doors coolers
    each one have a tstat and liquid line solonoid.
    manufacture recomends 1800 btu on each box
    thats a total of 3600 btu.
    My question is how do i calculate the long run of line to the
    condensing unit?

    5/8 suction line approx 40 ft rise to ceiling tile, another 50feet run in
    the ceiling then another 4-5 ft rise to the condensing unit to the roof.

    How do you calculate the aditional btu needed for the additional line set?

  2. #2
    Join Date
    Jul 2008
    Location
    Denver, CO
    Posts
    4,229
    Quote Originally Posted by shaka View Post
    Perlick
    M# CS064EUL
    SN# 410894

    I have two 3 doors coolers
    each one have a tstat and liquid line solonoid.
    manufacture recomends 1800 btu on each box
    thats a total of 3600 btu.
    My question is how do i calculate the long run of line to the
    condensing unit?

    5/8 suction line approx 40 ft rise to ceiling tile, another 50feet run in
    the ceiling then another 4-5 ft rise to the condensing unit to the roof.

    How do you calculate the aditional btu needed for the additional line set?
    I would say with a properly insulated lineset you would not have to figure any addtional load to the unit, I have installed remote condensers on ice machines with the same length linset you are discribeing with no addtional load figued in, you will just need to add more refrigerant to the system

  3. #3
    Join Date
    Jun 2004
    Posts
    854
    This is not a new box
    actual condensing unit
    Copeland m# RS43C1E-IAV

    I cant remember on what refregerant it used,
    but after we repaired leak, pulled vaccum,replaced drier

    The pressure were too high
    Box temp at 50-55 f
    sution pressure was 89 psi
    head 310
    2 degrees SC
    30 system SH

    this unit seems like it was too small.
    they said they had lots of problem with this box from the begining

    So I need to check to see if this condensing unit is big enough?

  4. #4
    Join Date
    Jul 2008
    Location
    Denver, CO
    Posts
    4,229
    Quote Originally Posted by shaka View Post
    This is not a new box
    actual condensing unit
    Copeland m# RS43C1E-IAV

    I cant remember on what refregerant it used,
    but after we repaired leak, pulled vaccum,replaced drier

    The pressure were too high
    Box temp at 50-55 f
    sution pressure was 89 psi
    head 310
    2 degrees SC
    30 system SH

    this unit seems like it was too small.
    they said they had lots of problem with this box from the begining

    So I need to check to see if this condensing unit is big enough?
    Refrigeration is different from A/C you would be better off to oversize your unit a little bit, I would recommend getting all that information to your supplier and having a engineer make a final call on the sizeing of your system

  5. #5
    Quote Originally Posted by shaka View Post
    Perlick
    M# CS064EUL
    SN# 410894

    I have two 3 doors coolers
    each one have a tstat and liquid line solonoid.
    manufacture recomends 1800 btu on each box
    thats a total of 3600 btu.
    My question is how do i calculate the long run of line to the
    condensing unit?

    5/8 suction line approx 40 ft rise to ceiling tile, another 50feet run in
    the ceiling then another 4-5 ft rise to the condensing unit to the roof.

    How do you calculate the aditional btu needed for the additional line set?
    Your 5/8 run is good for up to 100'.
    With a 40' rise you should have both sections trapped,with another trap at 20'
    and inverted at your horizontal @ your 50 ft. run. As a precaution invert through the roof.

    Now as for your compressor rated @ 4170 20 degree SST@120 you have enough pump but not enough condenser for the nice warm Texas sun.
    The RS43C1E -IAV updated to a RS43C2E-CAV is an extended medium temp.R-404A pump.

    If your using a standard indoor unit,change it to a true outdoor unit.
    FEN

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