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Nest c wire

DaveM
DaveM Member Posts: 53
edited August 2 in Thermostats and Controls

I have a taco sr503 on my gas fired hydronic boiler. Need to install a nest thermostat. Can I use the com port/ 24voc on the relay for the c wire connection

Comments

  • SteveSan
    SteveSan Member Posts: 256
    edited July 22

    Dave, you can use the com side of the 24vac/com terminal. They should be able to handle up to Two Nest. If you have three Nest, then you would need an external transformer.

    Also, our resistors won't work with the Nest if you need one. Nest suggests you use a 220ohm, up to 5watt resistor.

    If you have any other questions, please give Taco Technical Services a call during normal business hours Mon-Fri 8am-5pm EST 401-942-8000 and just ask for Technical Services.

  • DaveM
    DaveM Member Posts: 53

    thanks for the information I will wire it up and let you know

    SteveSan

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