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  1. #14
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    3,836
    he wants it close to 40*

  2. #15
    Join Date
    Jun 2004
    Posts
    849
    I don't think that's going to happen

    Unless its. 40F outside

  3. #16
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    3,836
    whys that ?

  4. #17
    Join Date
    Jun 2004
    Posts
    849
    You got 4000 btu

    You need around 7-8000
    On 4 inch walls of insulation

  5. #18
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
    Posts
    2,874
    Your suction psi doesn't seem bad yet your SH is high. Head a little low too. Maybe not enough capacity!!

  6. #19
    Join Date
    Jun 2004
    Posts
    849
    If he is your buddy
    Try to look for a 2 fan evaporator coil
    Then put an used AC condenser
    You can get it beer can cold

  7. #20
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    3,836
    i have the txv stem adjusted all the way out and it still has high superheat.

    if i dont have enough capacity then this would be a high load.

    i thought higher load would be higher pressures. or just higher superheat?

  8. #21
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    3,836
    1.5ton a/c with a 18,000 btu evaporator?

  9. #22
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    3,836
    if u say i can get it 40* then i will get to hookin it up.

  10. #23
    Join Date
    Jun 2004
    Posts
    849
    Hvac is rated at 40f coil witch is 1 ton =12000 btu
    At 20-25F coil it's approx 7,500 per ton

  11. #24
    Join Date
    Jun 2004
    Posts
    849
    You need a real refer coil not AC
    2 fan.

  12. #25
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    3,836
    yea, i figured that much. so a 1.5ton r-22 condenser would be about 11500 btus. so i need a 12,000btu 2 fan evap

  13. #26
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
    Posts
    2,874
    Quote Originally Posted by gravity View Post
    i have the txv stem adjusted all the way out and it still has high superheat.

    if i dont have enough capacity then this would be a high load.

    i thought higher load would be higher pressures. or just higher superheat?
    I thinking you got a larger evap than the little condensor can handle. Could be wrong!!! WHy did you install a 1/3 HP? What's the BTU rating of the evap?

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