I am in market to replace my simple A/C control unit with one that integrates with home my z-wave based home automation system. However, before I make the splash and buy a compatible thermostat, I would like to figure out how to actually get it connected.
My current thermostat consists of two parts - a remote control and a wall unit.
I was expecting to find something like this when opening up the unit:
RH - This wire comes from the 24VAC transformer on the heating system. RC - This wire comes from the 24VAC transformer on the air-conditioning system. W - This wire comes from the relay that turns on the heating system. Y - This wire comes from the relay that turns on the cooling system. G - This wire comes from the relay that turns on the fan.
However, not only the terminal in the A/C unit are marked differently (Gd, Gn, Bk, Bn, P, Y, O, R) but none of them are connected used, instead a single cable is connected to the unit. (see image).
My assumption is that the cable is simply somehow simplifying the connection but is this a standard? Will I be able to use a generic controller with this system?
The manufacturer is Airwell, the remote control says RC-5 on its body. I am not sure what the main unit model is but I can get on a roof if it helps. The air is guided to individual rooms via air ducts near ceiling and there is one big vent in the middle of the flat taking back to the A/C unit.