Hello, I have a open vented system with a Potterton Suprima 30 non condensing boiler from 1999. The system is fine apart from weeping pump isolation valves. I had thought about draining and replacing however we intend to renew the boiler, drain and flush the system in the summer and obviously this would be the best time to do the job.
Wondered what opinion was on just applying some Fernox LSX to the weeps in the mean time. There seems to be only a very small amount of water escaping, the heating and HW work fine and the F/E tank is very clean.
Wondered what opinion was on just applying some Fernox LSX to the weeps in the mean time. There seems to be only a very small amount of water escaping, the heating and HW work fine and the F/E tank is very clean.