I have a gravity fed system with a potterton 60e profile which replaced a baxi about 4 years ago. The pump used to be inside the boiler now it is next to it as all the pipework wouldnt fit in it. It was an emergency replacement as the old boiler packed up.
I think that since the new boiler was fitted (but I didnt keep a note of timing) I have had an ongoing problem with water coming out of the F&E overflow pipe. For some period of time it would intermittently spew a load of water out. I think that this was worse in the mornings but my neighbours say that they noticed it on occasions we werent in - so it could have been happening at all different times. Our plumber said he thought it was the coil in the cylinder and oddly enough once he diagnosed this we got a constant drip rather than periodic overflows.
He replaced the cylinder. We still have periodic overflows but I think that I have ascertained when they happen.
When the CH kicks in the pipe going into the cylinder cools down. This is still cool when the CH clicks off. The boiler fires up and gets very very hot then there is an almight explosion and water (?) shoots up the expansion pipe and out of the overflow.
If I turn the boiler to zero as soon as the CH clicks off this doesnt happen. Because it hasnt got cold yet the heating has not been on for any length of time. It seemed to be worse when we had a bath in the morning and the heating was on but I actually think that this is just a coincidence as this morning I tested it out. I pushed the CH up and then turned it down once the boiler had stopped firing. However, the boiler fired up and again and it pumped over.
We have had a cleaner put in the system which has to be left for a few weeks but it doesnt seem to be doing anything. The water coming out of the overflow is very orange.
Is this a blockage - as the plumber says he may need to put in stronger stuff in or poweflush and I have said he may need to cut the feed pipe(?) - or do you think that the pump may be in the wrong place. One plumber said the the pipes dont go the right way to the radiators but didnt elaborate.
This is really getting to me now - not least that it cant be doing the system any good and the water dumps onto the kitchen roof which can be quite alarming if youre in there.
Cheers.
I think that since the new boiler was fitted (but I didnt keep a note of timing) I have had an ongoing problem with water coming out of the F&E overflow pipe. For some period of time it would intermittently spew a load of water out. I think that this was worse in the mornings but my neighbours say that they noticed it on occasions we werent in - so it could have been happening at all different times. Our plumber said he thought it was the coil in the cylinder and oddly enough once he diagnosed this we got a constant drip rather than periodic overflows.
He replaced the cylinder. We still have periodic overflows but I think that I have ascertained when they happen.
When the CH kicks in the pipe going into the cylinder cools down. This is still cool when the CH clicks off. The boiler fires up and gets very very hot then there is an almight explosion and water (?) shoots up the expansion pipe and out of the overflow.
If I turn the boiler to zero as soon as the CH clicks off this doesnt happen. Because it hasnt got cold yet the heating has not been on for any length of time. It seemed to be worse when we had a bath in the morning and the heating was on but I actually think that this is just a coincidence as this morning I tested it out. I pushed the CH up and then turned it down once the boiler had stopped firing. However, the boiler fired up and again and it pumped over.
We have had a cleaner put in the system which has to be left for a few weeks but it doesnt seem to be doing anything. The water coming out of the overflow is very orange.
Is this a blockage - as the plumber says he may need to put in stronger stuff in or poweflush and I have said he may need to cut the feed pipe(?) - or do you think that the pump may be in the wrong place. One plumber said the the pipes dont go the right way to the radiators but didnt elaborate.
This is really getting to me now - not least that it cant be doing the system any good and the water dumps onto the kitchen roof which can be quite alarming if youre in there.
Cheers.
