Question about Hunter Fan Company 5/1/1 Programmable Thermostat

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Old Gas furnace(heat only)

I have a rental house where the renters tore off old t-stat, purchased a Hunter heat only T-stat to install. The problem is, it only has two wires for T-stat. One is red which has 24V and one blue. Question is, there are 3 other wires that has been snip off, to check for volts on red wire I had to go to snip white to read volts on red, there are no volts on blue, which I think is the heat or fan, not sure. Can a gas furnace and T-stat run on two wires only? or do I need another wire to complete circuit. It's a Hunter model #40020 T-stat. Thanks for any HELP....Sam

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Yes, it only needs 2 wires to run.

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Posted on Jan 20, 2009

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