3 wires come from the ac unit outside, 2 from the main unit.
They don't seem to come together except at the thermostat except the common wire from the 24v A/C transformer.
Main unit no screw terminals, just wire nutted.
Here is my question.
My thermostat is mounted in a main hall on a wall and behind that wall is my master bedroom closet with power 110v available.
Can I just add a 2nd 24v A/C transformer for my C wire?
I read where some have done this.
Some say only use the Common side a the C-wire and don't use the hot side of the transformer.
Others say piggy-back the hot side of the transformer to your R wire on the Thermostat.
I have a RC and a RH wire on my thermostat now.
So I see 3 ways to do this.
Add-on 24v A/C common to the C terminal on the thermostat (one wire used only)
Add-on 24v A/C common to the C terminal on the thermostat and the hot on the transformer to RH on the thermostat
Add-on 24v A/C common to the C terminal on the thermostat and the hot on the transformer to RC on the thermostat
I can do any of the above 3 options easily.
They don't seem to come together except at the thermostat except the common wire from the 24v A/C transformer.
Main unit no screw terminals, just wire nutted.
Here is my question.
My thermostat is mounted in a main hall on a wall and behind that wall is my master bedroom closet with power 110v available.
Can I just add a 2nd 24v A/C transformer for my C wire?
I read where some have done this.
Some say only use the Common side a the C-wire and don't use the hot side of the transformer.
Others say piggy-back the hot side of the transformer to your R wire on the Thermostat.
I have a RC and a RH wire on my thermostat now.
So I see 3 ways to do this.
Add-on 24v A/C common to the C terminal on the thermostat (one wire used only)
Add-on 24v A/C common to the C terminal on the thermostat and the hot on the transformer to RH on the thermostat
Add-on 24v A/C common to the C terminal on the thermostat and the hot on the transformer to RC on the thermostat
I can do any of the above 3 options easily.