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Sorry, this is the first forum I have joined and still learning. I thought you might not remember what the subject was about so I allowed some of your original text to be displayed again. Thanks I will do some research on these now I know what to look for. Thanks again for your help.

Sorry, for not replying sooner, got distracted last few weeks. Thanks very much for all of your very helpful input. Another question, I notice in some of your diagrams, the pump on the hot flow side, does it matter where the pump should be fitted? I thought it was best for pump life if on the...

. I already have a spare TMV and a Wiflow pump. I presume the Grundfos somehow regulates flow, is it really important? Did you see my reply about the DHW flow? I might be attacking it this weekend so be nice to get it right as I have already changed the arrangement once. Do you mind me...

Is this because it would be a sealed system? So if I put a F&E tank in the loft, it would not be a sealed system and then I would be able use auto air vents? And I would just use the integral F&E on top of the store to initially fill the store, or should I just fill the whole system from the...

Bit confused here. My diagram shows my envisaged CH solution so the flow would be hot flow from PHE to top of store because the boiler is charging the store via the PHE. But the DHW from the store has to flow from the top (Hot) to bottom (cool) of the store because the store is heating the mains...

Hi Norcon and Agile. Yes I did it myself and yes you are right, I have connected both flows in the same direction! Thanks for pointing that out. The pump is flowing downwards which is correct but I need to swap over the CW mains connections to the PHE. The tank has a port for the boiler flow...

Is this the solution for connecting vented heat bank to boiler in a sealed system?

Please see photos: showing the store/bank and PHE for HW.

Showing PHE for HW.

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Hi dcawkwell, I want solar panels in the not-too-distant future and the CH needed completely modernising so I needed an integrated thermal store. Unfortunately I chose the wrong sort, so I need a work around.

Hi Norcon, one of the heating engineers who bothered to take a look said that too. You are probably correct, but that does'nt help me sort out the problem I have unless I say goodbye to 1600 notes. Regarding your other question about the PHE. It is an Alfa Lavel and using it for heating mains...

cant you use the solar coil for a sealed system ? Hi Picasso. I want to use the solar coil for solar panels in the future. At the moment I just want a working HW/CH system.

Hi Boilerman2. I don't understand what you mean? I thought regulations allowed an oil boiler to be installed by a non-qualified person unless you want the boiler guarantee to apply? Are you saying the whole HW/CH system has to have a certificate?

Please can someone advise? I am not a heating engineer, but I have recently purchased a vented 250L copper thermal store/heat bank tank (TS). It has a solar coil and all other connections are direct. I have connected an external plate HE for mains water pressure HW side with pump circulating to...