stormmorris

That sounds great thank you for your help and time will let you know how I progress

Ha thank you for you really quick responses I was going to run the centre all tank inside at mains pressure but the external tank at neutral plumb my wood fire into the direct and the oil in on the coil there is also a coil for the radiators then, there is an immersion heater yes (I was looking at the solar thermal heat exchangers that plug in instead of the immersion?) sorry If I'm not the clearest at explaining. So the dhw tank would be mains pressure

yes it's the avc smartline I did chat with the guy at avc in there technical department who said there was no reason why I couldn't run the main body of water round the dhw tank on low pressure with a header tank would that stop it being classed as an unvented cylinder? Then I was going to use appropriate size expansion vessel on the dhw side. I am also in the process of acquiring 12sqm of solar thermal and am going to hook up my oil boiler to the tank

Hi thank you for your reply, what i meant was that the hot side of my alleged thermosyphon would have a difference of 700mm and the cold (return from tank back to boiler) would only be 300mm. it is a large store yes but it uses two tanks one inside the other each 300L in volume the internal one giving direct hotwater. the stove has and alternative that is not fitted as standard for protection in event of over heating but I wasnt aware that anyone would make an uncontrolled heat source such as a cooker only dedicated to use a circulation pump

Hi I am new to this site as a member not sure if to post this in here or other sorry. I will explain what I have and what i was going to do any advice more than welcome or opinions. Two years ago after buying a house i purchased a used thermal store very cheaply that had been ripped out of a newly renovated house as they wanted to change the heating and hot water situation. Last month i found a wamsler k148 cheaply again and in very good condition. I wanted to connect the two via a thermosyphon, the thermal store weighs 800kg when full and is too wide to pass any of the old stone door ways bar the one in the kitchen! I was going to mount the thermal store next to the wamsler at 400mm the height differences would be between the flow 700mm and the return 300mm. I can add another 400mm to both by raising the store on a block plinth alternatively I can open up the ceiling adding another 300mm to the 400mm but I rather not. I was advised by one person that even sat on the ground it would function but i would love to know if anyone has any other opinion. I am a lover of science and I understand that the principle is the relative density difference between the cold and hot water that enables it to function thus the more height difference on the cold side the larger the difference in density but that being said what are the minimums (most peoples answer is should work) but if anyone can help me with a more solid answer based on experience or knowledge that would be fantastic. Thank you for reading