750mv vs 12v Thermostat Question UPDATE 2
Updated 29 Nov-- Update 2--29 Nov: got it to work. Not clear on the thermostat voltage for these things whether I can use the cheaper version or what. I want it for my furnace only set-up in the R...
Forum Discussion
shastagary wrote:take the two wires going to the furnace. touch them together. If the furnace starts to run, which i suspect it will, connect one wire to the W and one wire to the R on the thermostat.if he connects his 2 thermostat wires tougher the furnace will run that's what a thermostat does. it is a switch controlled by a temperature controlled relay circuit in the thermostat polarity does not matter home furnaces have ac control power to the thermostat. its not that complicated buy the thermostat and hook it up thousands already have.
that was my point. it verifies he has the two correct wires to connect to the thermostat. once he verifies that, then it's easy peasy to get the thermostat connected up and working.
