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Nest power connector

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bigjoe1980
bigjoe1980 Member Posts: 14
in Gas Heating

Hello all,

Please tell me if I connected my nest power connector correctly to my new gas boiler. I only have two wire and no C wire. So I needed the nest power cable to charge my nest thermostat .

I connected the two black wires the relays the boiler to the R and W on the two white nest cables.

20251221_171951.jpg

Comments

  • 109A_5
    109A_5 Member Posts: 3,485

    What is shown in the picture looks incomplete. The R, C and W have to be correct to the boiler wiring. When it is hooked up correctly it should work.

    Sometimes the terminals are labeled on the insulating plate.

    image.png
    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System
  • mattmia2
    mattmia2 Member Posts: 15,652

    the terminals on the boiler might be labeled r g and c depending on what part the manufacturer used

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