Question about Honeywell Programmable Thermostat Heater

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Updating old honeywell thermostat with a new honeywell thermostat

Our old honeywell thermostat has five wires connecting it to our upflow gas-fired furnace. How do I connect a new honeywell thermostat that has only three or four wires? We haven't bought the replacement yet, but having looked have found the new non-programmable types have only three and four wires.

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Check in the unit heater to see what is hooked up most only need to have red from transformer white to call for heat and green to make the fan run in man and somtimes common usually blue or black

Posted on May 10, 2009

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Posted on Jan 02, 2017

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HONEYWELL WEBSITE:
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