Some air conditioners are controlled via a modular thermostat. You can replace this thermostat with one of the automation compatible thermostats (wired, z-wave, etc.).
The one in your link seems to be a split unit. From what I know all these units are controlled via IR remote control. You could control these air conditioners by using the GC100 (supported by Pluto) or the Ocelot (which might be supported via GSD). The only question is if Pluto already has the commands required to control it (temp up/down, fan control, etc.).