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Goodman PC060-1B Package AC...Need Wiring Help

I am replacing a AC/Heat Pump with just a AC that has auxillary electric heating coils. On the OLD unit, I had 2 separate 220V circuit breakers, one feeding the AC and it was connected to the L1/L2 contactor. The second breaker was wired to 2 wires with ''twist wire connectors'' to some lines in the old unit. My question is this: Do I need to supply the heating section with a separate supply voltage? I thought the separate supply voltaage might only be necessary for a heat pump and also I cannot located ANY ''second'' supply voltage input on the schematic. To state the question more simply: On a AC only unit with aux heating coils (not a heat pump) do I need just ONE 220 Volt Supply? Thank you.

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  • panilling9
    panilling9 May 11, 2010

    you need to know how many kw of aux. heat you have with this unit IE: 5,10,15,20 kw and so on?

    find your nameplates that state min max fuse or breaker for the unit a/c only

    and the aux heating and see what you have existing? is it enough?

    depending on the configuration of the unit most likely ther is a seperate fuse block for a/c power and aux. heat power.

    take panels off the unit look around and being 5 tons of a/c cooling ?then the aux will probably be a min of staged 20kw?

    yes i feel you need two power lines

    one for a/c only hook up and one for aux hook up( do not us twist wire connectors anymore).

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Depending on the size of your Electric heat you can use one set of wires because your unit does not run with the heat like the heat pump. The large set of wires going to the electric heat should be used. You may have to jumper a new set to the contactor. On Goodman unit come in L1 and L2 jumper to contactor. Very simple good luck. Rus

Posted on Jun 21, 2009

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