Thu, 30 Apr 2026 07:34:58 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=774&Focus=8140#Comment_8140 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=774&Focus=8140#Comment_8140 Thu, 18 Oct 2007 14:53:48 +0100 David Salter
The roof space is fully insulated and the cavity walls filled and all the windows double glazed.

We added a 30 tube evacuated solar panel in the summer which provided all the hot water required without having to resort to the LPG.

We now want to get rid of the old cooker and replace it with a Rayburn/Esse type one
a/ to cook from
b/ to heat the kitchen
c/ help warm up the cylinder water so that the LPG does'nt have to kick in so frequently to keep the central heating upto temperature.

Would I be rigt in thinking that I need a 3 coil cylinder to take the 3 heat sources, ( Solar,Rayburn/Esse,LPG) and that by investing in a Rayburn/Esse to help boost the water temperature in the cylinder that the call on the LPG will be far less?

Would a 3 coil water cylinder be the same as a heat store?

Would a Dunsley Neautraliser need to be fitted?

What would the best arrangement be to save on the use of LPG?

Do not want to go to the expense of taking the LPG out,and also want to have the comfort factor of the Rayburn/Esse.

Any information would be gratefully received, and if any plumbers, who live near Battle, East Sussex, would be interested in plumbing in the Rayburn/Esse please get in touch.

Rgds DES]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=774&Focus=8153#Comment_8153 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=774&Focus=8153#Comment_8153 Thu, 18 Oct 2007 18:53:18 +0100 tony
Please explain fully insulated loft, is the loft totally full?

You could go for an accumulator tank but I think it might be better to have two hot cylinders one fed only by solar and use it to fill the one you have already then combine the flows from the boiler and cooker to heat the other one when necessary.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=774&Focus=8160#Comment_8160 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=774&Focus=8160#Comment_8160 Thu, 18 Oct 2007 21:18:06 +0100 Johnh
I can only comment on your plans for the cooker as this mirrors what we have done in our property. We've got an ESSE W23 which we use to cook/heat up the kitchen/warm up the cylinder water so that, in our case our oil boiler doesn't have to kick in to top up the heat very often. The dealer that supplied the W23 'designed' the link-up system between the cooker/oil boiler using thermostats and solenoid valves. Our local plumber piped it all together and it works OK but we DO get problems with the oil boiler locking out when the whole lot's running together.

I'm no heating engineer/plumber but most people seem to suggest that in our application, a neautraliser would have made more sense. (Although our plumber said that you get problems with systems incorporating these as well)

We're happy with the ESSE W23 - the 'new' (rebadged) SFW boiler fitted Rayburns still have the boiler in contact with the firebox, so your woods not going to burn as cleanly or efficiently.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=774&Focus=8161#Comment_8161 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=774&Focus=8161#Comment_8161 Thu, 18 Oct 2007 21:39:27 +0100 David Salter
We have pretty well taken care of the draft situation, and as mentioned earlier all the windows are double glazed.The cavity walls are filled with a sort of wool material, via a company called Cavity Tech, and the loft is fully insulated with
around 250 mm of loft insulation material.

Is there a particular reason for having two hot water cylinders rather than one with three coils in it ?

Presumably the thinking is that the solar is always there,and 'free' as it were so that can be used for hot water needs during the day if necessary, and what is left over can be fed into the other cylinder to help warm up the water prior to the central heating coming on late in the afternoon before getting home.

Our overiding concern is to use the LPG as little as possible.

If we go for the Rayburn/Esse would it be better to just have one that cooks and heats the water or one that also runs 6-7 radiators? Am I right in thinking that the one that cooks and heats water should be able to produce enough hot water in the hot water cylinder to keep the radiators hot without the need for the LPG to keep kicking in? What would be the advantage,if any,of having a Rayburn/Esse that also ran 6-7 radiators?]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=774&Focus=8162#Comment_8162 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=774&Focus=8162#Comment_8162 Thu, 18 Oct 2007 21:56:53 +0100 Terry https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=774&Focus=8163#Comment_8163 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=774&Focus=8163#Comment_8163 Thu, 18 Oct 2007 22:03:21 +0100 David Salter
Thank you for your comments. I also have little or no knowledge of plumbing or heating hence your comments have been most helpful.

Am I right in thinking therefore that by adding just a Rayburn/Esse cooker/hot water heater model (rather than the models that also run central heating) I am going to be able to heat up the water in the hot water cylinder sufficently to prevent the LPG from having to kick in so often to heat the water for the central heating system? Hopefully the answer is yes, and if so does this make the idea of going for a Rayburn/Esse cooking,hot water,central heating model redundant? Again hopefully yes.

Have taken note of your link up situation, and neautraliser comment.Will bear this mind when I have the above clearly understood.

Also thanks for the Esse comment.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=774&Focus=8168#Comment_8168 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=774&Focus=8168#Comment_8168 Fri, 19 Oct 2007 08:01:18 +0100 David Salter
The current hot water cylinder already has two coils one for the solar the other for the LPG heating aspect.If we add the Rayburn/Esse heating input can this be put into a separate cylinder,or can it be put into the current cylinder by changing the pipe work around for the solar coil to accept the Rayburn/Esse heat and get another cylinder for the solar heat, or would it be better to get an altogether bigger cylinder that has three coils to take the three heat inputs ( solar,LPG,Rayburn/Esse) or even a four coil cylinder,if they are available,if it's thought worthwhile to link the longe stove upto the hot water cylinder.Just trying to make use of the heat generated by the solar,Rayburn/Esse,lounge stove in the best possible way so that we don't have to use the LPG so much.
If all this is possible what is the best method to adopt for controlling the heat input into the hot water cylinder/s so that the whole thing does'nt explode?]]>