2 stage thermostat


Old 12-27-01, 04:08 AM
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2 stage thermostat

I recently had a 2 stage furnace installed in my house. The contractor doing the install said a 2 stage stat would not be necessary and that my existing programmable (honeywell) stat would do the job. What am I missing without the 2 stage stat? What are the differences between the two? Would you recommend the 2 stage?
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Old 12-27-01, 09:13 AM
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Turn power off

remove tstat.If your tstat has a "W1" and a "W2" you have a 2 stage heating tstat.HOWEVER,it can not be 2 stage if a wire is not connected to each terminal.PDF

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