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seascoundrel
Community Member
since ‎10-09-2023
‎10-10-2023

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No C terminal at boiler

10-09-2023
I'm installing a nest thermostat and I have a 2 wire heating system with no c wire at boiler. I have 24v on the red wire. Can I add a jumper wire from R to C at the thermostat to supply voltage or do I have to get a 24v transformer?
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