Question about Heating & Cooling
I only have 2 wires coming from the wall, both are black, neither are labled.
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Posted on Jan 02, 2017
First make sure this is a heater set up for a remote mounted thermostat. If so, the gas valve has 3 screws labeled TH (thermostat) and TP (thermopile) that's the flame sensor with 2 wires coming off it, I don't know where the goofy name comes from. there will be one screw that has both, usually the top one. Wire accordingly. The new valves have a solenoid on the bottom. this connects to the high temp. sensor up top. It has 2 wires on it, one connects to the thermostat wire, the other goes to the screw with TH and TP. Or you can skip it and connect the wire from the back of the valve to the Th and TP screw. Make sure the thermostat wires aren't pinched somewhere, thus eliminating the thermostats control.
Posted on Mar 02, 2008
I connected the blue wire to the R and the white wire to the W on the old thermostat and shoved the new Honeywell 5-1-1 Day programmable thermostat up the first guys *** that i ran into at Canadian Tire
Thanks for your help
Posted on Dec 29, 2008
Your problem should be pretty simple. (assuming that it is a typical 24volt system) you should hook up the black wire to the "RH" terminal and the white wire on the "w" terminal. Make sure that you turn off the power to the furnace at the breaker or the furnace itself before attempting this. The reason for this is that you can cause a short and either break the fuse at the furnace or burn up the circuit board. This can happen very quickly and is very common when a thermostat is removed.
Posted on Jan 28, 2009
I don't know much about this ,but it seems to me you need to check and see if the old t-stat is line voltage or low voltages.
Posted on Mar 15, 2009
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