I've recently noticed that our FE tank is overflowing because when the CH is on there is a steady stream of hot water filling up the FE tank and going out the overflow. I think this may have been doing this for some time.
The ball valve seems ok.
After reading lots of other posts on this I believe the vent and feed to the FE tank should be quite close together and before the pump and Y valve.
It seems that my system has been modified such that the original FE feed from before the pump has been capped off and it is now feeding into the hot water side, after the valve, but before entering the HW tank.
The FE vent is still on the boiler side of the pump.
Does anyone know why this modification might have been done - is it a recognised cure for something?
I'm not sure if it related to the overflowing problem, but it would be nice to know why it was done.
We've been in the house 2 years.
I know that the boiler was replaced just before we bought the house, and the only othe mod that I can see is that 2 power shower have been added into the system some time ago.
It's an open vented system.
FE tank and cold water tank in loft - on same level base (water in CW tank about 15cm higher than FE tank)
Ball valves seem ok.
Condensing gas boiler (sorry don't have model at mo)
Honeywell Y valve.
The ball valve seems ok.
After reading lots of other posts on this I believe the vent and feed to the FE tank should be quite close together and before the pump and Y valve.
It seems that my system has been modified such that the original FE feed from before the pump has been capped off and it is now feeding into the hot water side, after the valve, but before entering the HW tank.
The FE vent is still on the boiler side of the pump.
Does anyone know why this modification might have been done - is it a recognised cure for something?
I'm not sure if it related to the overflowing problem, but it would be nice to know why it was done.
We've been in the house 2 years.
I know that the boiler was replaced just before we bought the house, and the only othe mod that I can see is that 2 power shower have been added into the system some time ago.
It's an open vented system.
FE tank and cold water tank in loft - on same level base (water in CW tank about 15cm higher than FE tank)
Ball valves seem ok.
Condensing gas boiler (sorry don't have model at mo)
Honeywell Y valve.