Old Thermostat has only R, new one has RC and RH

CynCB Posts: 1, Reputation: 1

New Member

Nov 5, 2011, 04:13 PM

Old Thermostat has only R, new one has RC and RH

Hello,

Old thermostat had only r connection. New one has rc and rh. Do I connect it to rc, rh or both.
Thank you

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