Replacing a 20 yr old thermostat

ghgolf Posts: 1, Reputation: 1

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Oct 8, 2011, 03:12 PM

Replacing a 20 yr old thermostat

Trying to replace a 20 yr old intertherm thermostat... with a honeywell thermostat, there is a blue wire that is connected to a termninal looks like an H... is this a dominate?

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