hi all, I want to change my rehau programmer to a hive so I can operate it from my phone. I have 4 zones all controlled from a hydronic master and the main rehau master controller. The wiring is low voltage out of the programmer and in to the hydronic master. Is anyone familier with rehau. I bought the house 5 years ago and inherited the UFH and have the upstairs heating and hot water on a hive so it would be nice to add this to it. thanks.