V
Veggie Dave
I'm trying to cure a fully-pumped central heating system where the radiators become warm when only the hot water is turned on. This has always been the case ever since the customer moved in.
The three port has AB on the left, A to the top and B to the bottom. I was wondering if it's possible the port was allowing some water past it into the heating circuit.
Or...
The return to the boiler from the primary and secondary are a T fitting within two inches of the boiler, with the top of the T being the primary return, the bottom of the T the secondary return, with the combined flow exiting on the right. Could it also be possibly that the primary return is taking the path of least resistance into the secondary circuit?
If it's the second case then a check valve on the secondary circuit should cure the problem, yes?
The three port has AB on the left, A to the top and B to the bottom. I was wondering if it's possible the port was allowing some water past it into the heating circuit.
Or...
The return to the boiler from the primary and secondary are a T fitting within two inches of the boiler, with the top of the T being the primary return, the bottom of the T the secondary return, with the combined flow exiting on the right. Could it also be possibly that the primary return is taking the path of least resistance into the secondary circuit?
If it's the second case then a check valve on the secondary circuit should cure the problem, yes?