S
StevenW
Hi Guys,
Quick question for you,
I have just had my underfloor heating piped into the main circuit by a plumber. I have not used him before.
My setup is a Sealed system, Convetional boiler, S plan plus with 3 zones. 2 heating/ 1 DHW.
The UFH uses a an RWC combined thermomix valve/pump assembly.
The flow that supply's the UFH setup has been Tee'd off before the main central heating circuit pump.
Is this correct? It was not like this previously and all schematic diagrams I have looked at show the flow branching off to the UFH zone AFTER the pump, as like the other 2 zones.
Last night, we had the UFH heating on and the other 2 zones off. The boiler seemed noisy and the system pressure was up over 2 bar.
As I can see it, when only the UFH zone is on, and no demand from the other 2 zones, the Auto bypass valve is going to be constantly forced into bypass by the main pump.
Also, as the flow to the UFH is branched off on the intake side of the main pump, the pressure differential between the flow and return of the UFH is likely to be higher on the return side.
I am an aircraft engineer by trade, not a central heating engineer. So any advice and information would be greatly appreciated.
Many thanks in advance!
Steve.
p.s. Ignore the temporary wiring in the photo please!
Quick question for you,
I have just had my underfloor heating piped into the main circuit by a plumber. I have not used him before.
My setup is a Sealed system, Convetional boiler, S plan plus with 3 zones. 2 heating/ 1 DHW.
The UFH uses a an RWC combined thermomix valve/pump assembly.
The flow that supply's the UFH setup has been Tee'd off before the main central heating circuit pump.
Is this correct? It was not like this previously and all schematic diagrams I have looked at show the flow branching off to the UFH zone AFTER the pump, as like the other 2 zones.
Last night, we had the UFH heating on and the other 2 zones off. The boiler seemed noisy and the system pressure was up over 2 bar.
As I can see it, when only the UFH zone is on, and no demand from the other 2 zones, the Auto bypass valve is going to be constantly forced into bypass by the main pump.
Also, as the flow to the UFH is branched off on the intake side of the main pump, the pressure differential between the flow and return of the UFH is likely to be higher on the return side.
I am an aircraft engineer by trade, not a central heating engineer. So any advice and information would be greatly appreciated.
Many thanks in advance!
Steve.
p.s. Ignore the temporary wiring in the photo please!