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    bradleyklimp's Avatar
    bradleyklimp Posts: 2, Reputation: 2
    New Member

    Jan 4, 2010, 07:54 PM
    Goodman furnace guso50-2 thermostat wiring instructions for 2 wire thermostat
    Looking to hook up a 2 wire heat only thermostat as the door with the weiring diagram is missing it's a goodman guso50-2?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert

    Jan 5, 2010, 01:50 AM
    The thermostat will use the R or RH=RED wire and terminal along with the W=white wire and terminal.
    ritukuls's Avatar
    ritukuls Posts: 4, Reputation: 1
    New Member

    Jan 9, 2011, 08:32 AM

    Well in two wire system polarity doesn't matter.

    You can put any wire in the power terminals which will be R or RH

    And other in W

    Make sure if it's low voltage the volatge should be min 20VAC - 30 VAC

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