Hi, this is my first post and I'm fairly clueless when it comes to plumbing.
My builder has installed Polypipe Overlay underfloor heating in my kitchen and has connected the ZRU to a separate flow and return from my boiler (so it is not part of the existing heating circuit. As he didn't put a flow control valve on the UFH circuit the floor gets hot when the hot water is on but not the heating, so he is going to add a 2 port zone valve to the flow before the ZRU.
My question is how will this need to be wired up so that the UFH can turn the boiler on when it calls for heat if the main heating circuit is not calling for heat.
I have got a Honeywell CM907 programmable thermostat on the main heating circuit which happily controls the boiler, and am going to get another one for the UFH zone which will be connected to the 2 port zone valve.
Do I need some sort or box to link the two thermostats up together so that they can both independently call for heat and fire up the boiler? Or do I just wire both the new 2 ports zone valve for the UFH and the existing one for the main heating to the boiler controller?
I have the heating controller set to be permanently on so that the programmable room stat controls the heating, but I want each zone to be able to independently control the boiler.
I hope all that makes sense.
My builder has installed Polypipe Overlay underfloor heating in my kitchen and has connected the ZRU to a separate flow and return from my boiler (so it is not part of the existing heating circuit. As he didn't put a flow control valve on the UFH circuit the floor gets hot when the hot water is on but not the heating, so he is going to add a 2 port zone valve to the flow before the ZRU.
My question is how will this need to be wired up so that the UFH can turn the boiler on when it calls for heat if the main heating circuit is not calling for heat.
I have got a Honeywell CM907 programmable thermostat on the main heating circuit which happily controls the boiler, and am going to get another one for the UFH zone which will be connected to the 2 port zone valve.
Do I need some sort or box to link the two thermostats up together so that they can both independently call for heat and fire up the boiler? Or do I just wire both the new 2 ports zone valve for the UFH and the existing one for the main heating to the boiler controller?
I have the heating controller set to be permanently on so that the programmable room stat controls the heating, but I want each zone to be able to independently control the boiler.
I hope all that makes sense.