Don’t be put off or daunted by heating they are a piece of p**s once you understand what you are trying to achieve, the system you show above I.e hot water, heating(rads) and underfloor heating and External oil fired boiler
Isn’t as complex as you’d think.
The UFH as said earlier will have its own wiring centre for the pump the stat or stats I presume with having four zones you’ll have four stats and at least four actuators the connection of this is simple with the fully labelled wiring centre supplied.
In effect you have three switched lives to fire a boiler each passing through stats which in turn open a valve which supplied a switch live to the boiler. Simplest way is a two channel clock heating got water and programmable room stats for each of the UHF zones. Sorry if this sounds a bit long winded but as I say a lot easier than you’d expect as said before quiet place few diagrams and no worries.
Isn’t as complex as you’d think.
The UFH as said earlier will have its own wiring centre for the pump the stat or stats I presume with having four zones you’ll have four stats and at least four actuators the connection of this is simple with the fully labelled wiring centre supplied.
In effect you have three switched lives to fire a boiler each passing through stats which in turn open a valve which supplied a switch live to the boiler. Simplest way is a two channel clock heating got water and programmable room stats for each of the UHF zones. Sorry if this sounds a bit long winded but as I say a lot easier than you’d expect as said before quiet place few diagrams and no worries.