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    CliveE Posts: 2, Reputation: 1
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    Sep 19, 2018, 01:31 PM
    can a Honeywell RTH8500 replace a Lennox (P)X4147 themostat
    Can a Honeywell RTH8500 thermostat be used to replace a Lennox (P)X4147 and if so were do I terminate the S1 and S leads on the Honeywell thermostat?

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