I d read that this was a heat pump as well , and that is where a problem might come up,
The home was built as an Energy efficient and Green Home, They had a solar thermal water heating system
in place, until a few months ago , someone broke in and stole the Water heater
and thermal miser and computer i believe a Steca sun-earth st301 and im sure there were other things that im not aware of , But could the Daiken have been connected to any of those units that were stolen ? I will send pics so you better understand
Also - to replace this exact set up was going to cost $6500 , so i decided to get a propane tankless water heater instead , was that a mistake if these things connect or ???
Pics should be simple enough , and lastly when i was in attic , taking pics , I came across some papers which i think explain the lay out of how they did it.