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We installed a 4 ton downflow coleman air handler with evap coil Model number 1854s2m we did not change out the outside unit. the outside unit is a 13 year old 3 1/2 ton intertherm condenser the system is only generating a 10 degree delta T. My question is, this coil came with a factory TXV I am trying to find out is this a 10 seer or 13 seer coil is it compatable with the outside unit.

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  • Anonymous Mar 31, 2014

    What should my pressures be on a 13 seer 2 1/2 ton at 65 degree's outside

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You have a missmatched system, for it to work try removing the orfice on the high side txv it is not allowing the evaperator coil to fill with refrigerant properly coleman and intertherm dont like each other since they control a large market in the manufactured housing heating and cooling units electricaly connecting the componets together no issue prefromance sometimes is the issue hope this helps

Posted on May 08, 2008

  • Larry Smith
    Larry Smith Jun 16, 2014

    there is no orfice , its a TXV

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