Hi...first post to this site (and I'm just a girl!) so please go easy!
The overflow pipe from large header tank in our loft always drips when the hot water is being heated-never when just the CH is on. Turning on the HW taps fixes the drip till the tank fills up, then it starts again! It just started doing this a few weeks ago (on investigating I discovered that the piece of Kitchen counter(!) that the previous owners had been using as a lid had fallen into the tank, along with a load of fiberglass insulation that I guess they were using to insulate the tank!?)
Anyway-removed the debris, fitted a proper lid and jacket but ever since then have still got this drip when the HW is on...All I can gather from my DIY book is that possibly we have a leaking heat exchanger in the HW cylinder. Don't have a clue what that means! Am I completely on the wrong track? Would it be easy to fix? Could it have have been caused by what I found in the loft tank?
Also, while up there I had a look in what I assume is the CH Feed and Expansion tank-and it's empty apart from an inch or so at the bottom! Ball valve low-but doesn't open, even when I fiddle with the tap! I don't know enough about any of this to know if that's normal or not!? CH seems to be working fine but I really wanted to treat with scale/rust inhibitor and thought that was the route to go, but not really sure how to go about that now!
Any ideas gratefully received!!!!
The overflow pipe from large header tank in our loft always drips when the hot water is being heated-never when just the CH is on. Turning on the HW taps fixes the drip till the tank fills up, then it starts again! It just started doing this a few weeks ago (on investigating I discovered that the piece of Kitchen counter(!) that the previous owners had been using as a lid had fallen into the tank, along with a load of fiberglass insulation that I guess they were using to insulate the tank!?)
Anyway-removed the debris, fitted a proper lid and jacket but ever since then have still got this drip when the HW is on...All I can gather from my DIY book is that possibly we have a leaking heat exchanger in the HW cylinder. Don't have a clue what that means! Am I completely on the wrong track? Would it be easy to fix? Could it have have been caused by what I found in the loft tank?
Also, while up there I had a look in what I assume is the CH Feed and Expansion tank-and it's empty apart from an inch or so at the bottom! Ball valve low-but doesn't open, even when I fiddle with the tap! I don't know enough about any of this to know if that's normal or not!? CH seems to be working fine but I really wanted to treat with scale/rust inhibitor and thought that was the route to go, but not really sure how to go about that now!
Any ideas gratefully received!!!!