S
sm1597871
This morning I noticed water gushing out of the loft overflow pipe.
I quickly turned the internal stopcock off and turned the hot water taps on and the water stopped gushing out.
I went into the loft and established the water had been overflowing from the large of the two tanks.
I ran the hot water until the system was empty, obviously leaving the mains supply off.
I turned the internal stopcock back on and watched the large loft tank fill up until the ballcock reached its level and the water stopped flowing.
The water level kept rising, even though there was no water entering the tank!
I have determined, after emptying the tank and shutting off the supply the ballcock regulates, that the water is coming in from where the water exits to the copper tank!
There appears to be a reverse flow.
My system is a conventional type with the cold storage tank and the feed and expansion tank in the loft, and the condenser boiler and cylinder tank in the bedroom.
Please help as I have to keep the mains water off otherwise the tank overflows!
I quickly turned the internal stopcock off and turned the hot water taps on and the water stopped gushing out.
I went into the loft and established the water had been overflowing from the large of the two tanks.
I ran the hot water until the system was empty, obviously leaving the mains supply off.
I turned the internal stopcock back on and watched the large loft tank fill up until the ballcock reached its level and the water stopped flowing.
The water level kept rising, even though there was no water entering the tank!
I have determined, after emptying the tank and shutting off the supply the ballcock regulates, that the water is coming in from where the water exits to the copper tank!
There appears to be a reverse flow.
My system is a conventional type with the cold storage tank and the feed and expansion tank in the loft, and the condenser boiler and cylinder tank in the bedroom.
Please help as I have to keep the mains water off otherwise the tank overflows!