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Indeed the thermal store is perfect for instant hot water and central heating, downside is the amount of water. Guys it was second time lucky and after the re-fill no more leaks. I have since found these pipes go to the conservatory heater which was retro'd when the previous owner had it...

Thanks guys, Heated again, took off and wiped off solder. Sanded/wire wool and clean pipe again. Refluxed and soldered again and now re-filling. The trouble is i have a thermal store and takes an age to drain and re-fill! Oh well I'm learning......

Right all done, used a normal 15mm coupler and a 15mm slip coupler but after filling i have noticed a very slight wince from 1 side of the slip coupler. I guess this is bad news and will need to cut and try again? I suppose re-heating the coupler is a no no?

Hi picasso, Thanks for this. I believe the pipe is 15mm so will look at getting these can you get these with solder in like the yorkshire ones i have? I assume these are just without the slight indent in the middle. Thanks Barry

Guys, Thanks all for your suggestions. It is indeed a doorway. Spent most of yesterday evening removing door and taking up laminate flooring in other room and taking more floor boards up. The sawing was down to myself and a structural engineer as we are taking a wall down below and need to...

Hi All, I was taking up floor boards today and i have sawn/grazed one of the central heating pipes in the process. There is no leak but there is about a few mm graze/cut in the pipe and i was wondering what the best action was. Is it safe to ignore/leave or does it require filling with...

The power to the valve is twinned into the rad pump, so when central heating comes on it must open. Would this be fitted to stop the water moving from the store around the rads?

Brian, Thanks for your post. I think it may be well worth checking the sludge in the bottom of the store, to rule it out. How can i check the flow temperature? Do i just put some gauge on the return pipe? Also regarding the wet vacuum approach, how do i start getting the immersion...

Cheers Andy, yes the pump on the bottom left is the one replaced. We also had the other red pump in the below picture replaced. The store thermostat was also replaced around the same time. Since then the store seems to have been ok. The Boiler feed and return pipes are on the bottom left...

Yes, the pump does have slot valves. Last plumber changed it by closing these as pointed out by Tony. Pump is about a year or so old as was changed last year. I had multiple calls from homeserve engineers who could not fix our heating issues. May seem not to understand the system we have...

Hi Guys, The store is directly heated from boiler. The immersion heater at the bottom has been disconnected. Andy, funny enough i was looking at the pump last night. There is a possibility that it could be leaking air into the system when heating the store. Not sure if it could be an...

The boiler is a Baxi Solo WM 50/4RS. not sure if it is a condensing boiler, as have read on forums is not advisable for a thermal store. (short burns to keep store at required temp) Just doing the maths i put 2 lots of X200 in before which calculating the volume would of been good for a 200...

Guys, The wife has informed me the rumble does start from the boiler, then pipes but the loudest rumble / noise comes from the store itself. Is it possible a lot of gas is being produced by the boiler and then making it's way to the store, where it gets released by the F&E tank?

DOH! Thanks ianniann! That works out as 245 litres now :D Hmm.. Yes maybe remove the immersion heater Razor! That is not used! The drain off valve does not work either, probably gunked, so i normally drain from the boiler valve, which leaves the bottom still gunked up! Will i be able...

Hi Andy, Thanks for your quick reply. Not sure so I have uploaded a picture. The noise comes from the store, seems to be after the boiler has heated it up. There is a tank jacket on it. The top has a F&E tank. i have drained and filled this up several times, so the flow is ok...

Hi All, I have a thermal store which is heated by the boiler. A second pump also circulates this to the CH. A coil with blend valve provide the HW. It's been rumbling recently (localised boiling? sludge/scale perhaps in the bottom?) and after some research appears it requires either...

Hi ChrisR, Yes, it is directly heated from the boiler, the same water is then used to pump around the CH. A coil in the tank is used for HW. So the tank temp is required to be quite high 70-80 degrees. I don't think it has been regularly maintained and obviously the high temp will cause...

The tank rumbles every now and again, which i believe indicates localised boiling, which is linked with scale. Would you still recommend DS3?

There is no mark / name on the tank, i'm trying to de-scale inside the actual tank. not inside the hot water coil. i think there is a lot of build up in the base as the drain valve is clogged up.

Hi All, I have a thermal store which provides combined hot water and central heating. It's been rumbling recently and after some research it appears it requires de-scaling. I have tried X400 followed with X200 + X100, but that fixed it for a short period. But i read on the forums that...