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Keeping the exit from the accumulator at a fixed temperature is the problem... Once the ufh pump is running the heated water is depleted... Why? because there is no hot water delivered into the accumulator whilst the ufh pump is running. (I have found a way of keeping the pump running, all...

Hi Norcon Superb, maybe now getting somewhere!! The issue is this... Yes I can get 45° at the manifold, quite easily actually. The problem is that the pump will only run when there is a delivery of 70° water to the deposit. Now, as the accumulator is only delivering 40 - 45° of water to...

Not sure what the tmv is sorry but the water is leaving the accumulator as I can feel the outlet manifold(?) getting warm... Where the 4 different floor circuits are connected. There is a cut off thermostat on the 'manifold' set at 45° to cut the pump if this temperature is reached. I have...

The accumulator achieves somewhere between 60° and 70° when the range is firing on near full power. This is indicated by a thermostat on the accumulator. The mixing valve is Duco, German I think. I have no idea what the flow rate is as there are no flow meters!

After a very long meeting with the installers they have decided to come back tomorrow and try a few other things... especially as this is the FIRST TIME they have installed such a system!!!! Things that are going to be tried tomorrow.... 1) Bypass the accumulator. the installers are...

Your assumptions are correct. The pipe from the blue box is the feed to the radiators. The pump then 'lifts' the return, up along and down. There is no air vent on this or any other pipe that has the same characteristic. Yes the pipe is the return to the wood burner. There is no pump...

There are air vents on top of the accumulator (I think). The water in? Not sure I understand that one sorry? I am not liking the "Yee-har"!!!! I assume that is relating to the 'blue box'?

The range is pretty srandard. Firebox for burning wood and then a 'backboiler' which holds approx 70l. On the back of the range is a thermostat that is set to, lets say, 75°. Once temperature of the water is reached then the pumps run and take the water from the range. Similar to all other...

Thanks for everyones replies so far... In answer to questions 1) What was asked for was a system that would heat the house! With the capability of adding in solar heating/hot water. The solar side is a 'nice to have' as we do not plan to install the solar until next year. But we obviously...

Ok, here is a link to a photo with labels to various bits as I believe them to be. http://www.freeimagehosting.net/uploads/51fbf064f7.jpg At a cost of 13,000 Euros, at the moment it seems to be a complete waste of money and would rather have had rads running direct from the range instead...

Hi Tony Unfortunately not however, the actual water boiler holds 70l of water and when the range is running it does heat and deposit that water in anywhere between 30 seconds and 1 minute depending on wood and settings on the range. Obviously this water is not stone cold when it enters the...

http://www.freeimagehosting.net/uploads/133d748f01.jpg Cannot seem to be able to upload onto the site but here is a link to one of the photos.

Thanks for all replies so far!!! I don't think 25kw is excessive??? Quite the opposite... Maybe it's too low for the system installed. Anyway, the accumulator is a Solius I have just taken some photos and will upload in a few minutes.

OK, here is the situation Renovated old granite house in Portugal. Because of the cold temperatures here decided to have full central heating AND floor heating.What has been installed is... 600l accumulator 25kw wood burning 'range' 110 elements of radiator 91m2 floor heating. The...