I am replacing and old thermostat to a 052-8850-4. How do I connect a multiwire installation to the 2 wire unit? I am unsure as to which connection my current red green yellow connect to.
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I am replacing and old thermostat to a 052-8850-4. How do I connect a multiwire installation to the 2 wire unit? I am unsure as to which connection my current red green yellow connect to.
Need exact brand and model number
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