C
currie123
Hi guys
What is the purpose of the third connection at a cylinder stat which appears to connect to the central heating pump on most wiring diagrams I have seen?
The system I have is what I assume to be gravity hot water with pumped central heating .
There are no motorised valves, just a pump switched on from the CH on terminal at the programmer, and the boiler switched on from the HW on terminal at programmer. I am to install a cylinder stat and I understand that it is just a switch to cut power to the boiler once temp rises, but not quite sure what purpose the number 2 connection has that appears to connect to the pump live?
When heating is selected at the programmer both the hot water and heating come on. Heating can be selected independently.
Thanks
What is the purpose of the third connection at a cylinder stat which appears to connect to the central heating pump on most wiring diagrams I have seen?
The system I have is what I assume to be gravity hot water with pumped central heating .
There are no motorised valves, just a pump switched on from the CH on terminal at the programmer, and the boiler switched on from the HW on terminal at programmer. I am to install a cylinder stat and I understand that it is just a switch to cut power to the boiler once temp rises, but not quite sure what purpose the number 2 connection has that appears to connect to the pump live?
When heating is selected at the programmer both the hot water and heating come on. Heating can be selected independently.
Thanks