Why is hot water coming out of my ch header tank?
Why is hot water coming out of my ch header tank?
Sounds like it could be a failure of the heating coil in the hot water cylinder. If the cold water header tank water level is above the water level in the ch expansion tank a leaking ch coil would cause hot water to flow into your header tank. Try draining down the hot water cylinder and see if this stops the pumping over.
Why is there a hole in the top of a header tank?
The overflow pipe is there to prevent a water container from overflowing. The hole towards the top of sinks is there to prevent water overflowing onto the floor and header tanks have a pipe that works in the same way.
When is hot water running from Ch tank overflow?
Hot water is trickling from the header tank overflow pipe only when the CH is running. It is a dual system (CH or hot water with motorised valves) and no drip occurs when only heating the hot water. No drips either when boiler is off so the ball valve is OK.
What causes the header tank of a boiler to overflow?
There are many reasons why the header tank is overflowing: Pump over run is when the boiler continues to pump for a few minutes after the central heating or domestic hot water is turned off. Most modern boilers have this important feature which prevents heat from building on the heat exchanger.
Sounds like it could be a failure of the heating coil in the hot water cylinder. If the cold water header tank water level is above the water level in the ch expansion tank a leaking ch coil would cause hot water to flow into your header tank. Try draining down the hot water cylinder and see if this stops the pumping over.
The overflow pipe is there to prevent a water container from overflowing. The hole towards the top of sinks is there to prevent water overflowing onto the floor and header tanks have a pipe that works in the same way.
What causes hot water in a ch expansion tank?
If the cold water header tank water level is above the water level in the ch expansion tank a leaking ch coil would cause hot water to flow into your header tank. Try draining down the hot water cylinder and see if this stops the pumping over. If the tank seems never to drain this would confirm a leaking ch coil which would be filling the tank.
What causes a central heating tank to overflow?
Over time, this coil can become perforated, meaning there’s hole in the coil which allows water for the central heating into the domestic hot water being stored in the cylinder. This rise in water levels can then lead to the feed and expansion tank overflowing.