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    chuckjordan's Avatar
    chuckjordan Posts: 1, Reputation: 1
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    #1

    Nov 11, 2006, 10:17 PM
    Wiring from transformer to heat only thermostat
    I have a honeywell hot water heat system(condo) with a control valve for the water, a transformer to supply power to the valve and a thermostat. The power supply was disconnected and I now need to reconnect a new transformer into the system. I have tried to use a 40VA transformer but I am concerned it supplies to many amps for the thermostat (max 1.5amps.) Can I use a transformer of this amperage with a thermostat that requires max 1.5 and a control valve that needs .36 amps.
    letmetellu's Avatar
    letmetellu Posts: 3,151, Reputation: 317
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    #2

    Nov 11, 2006, 10:34 PM
    If it is a 24 volt transformer you can use it, that is what all of the controls of central furnaces have.
    bharr07's Avatar
    bharr07 Posts: 22, Reputation: 1
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    #3

    Nov 11, 2006, 11:34 PM
    Quote Originally Posted by chuckjordan
    I have a honeywell hot water heat system(condo) with a control valve for the water, a transformer to supply power to the valve and a thermostat. The power supply was disconnected and I now need to reconnect a new transformer into the system. I have tried to use a 40VA transformer but I am concerned it supplies to many amps for the thermostat (max 1.5amps.) Can I use a transformer of this amperage with a thermostat that requires max 1.5 and a control valve that needs .36 amps.
    Yes you can use it it is , your new transformer does not put out ampreage a 40va it is capable of handling the milliamp draw that is created from opening your zone valve and operating your t-stat, which by the way if your in a condo complex this transformer may be contolling more than just your condo which may be another concern if its handling more than three condos , hope this helps

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