To be more precise, I need instructions or the operating manual for Noma programmable thermostat model HTM611A.

Thank you.

Have noma model:htm611a, want to wire it to 240volts but only have 2 wires how do I do this

Have noma model:htm611a, want to wire it to 240volts but only have 2 wires how do I do this

I have a model 52-2557 programmable thermostst. My old one has 3 out of the 6 wire used, Red black and green. Which ones do I connect to the new thermostat which has 4 wire connections G,R,Y,W.
Thanks