MikeSharp01

Here at millstone manor we have the 35Kw system boiler and a couple of log burners, temperature is 16.2 in my study - better check the LPG level, not that the lorries will be getting here I just made it in the Disco after a 3 hour journey from Rochester (normally 30 minutes) - people who drive cars / vans with rear wheels only driven need to stay out of the snow.

Bedrooms can be like that!

Yes, thanks @Ian I found it, interestingly the architects drawings do refer to the cladding system and it being class 0 rated, so more evidence that they have sent me a standard letter and not looked through the submission yet. The other one seems to be Part R - new one on me but refers to data network connections, it seems that you cannot build now without provision for it which does, all in all, make perfect sense and again it is in the drawings - well the comms cabinet and ducting to the house is.

We appointed our BC for the main house a few weeks back and they have just come back with a list of things they want, most of which they have but I suspect they have not opened the 'file' as it looks like a standard letter. So I will bounce it back as they have it all BUT they have asked for two things I was not immediately expecting: ' details of the fire resistance to external walls within 1.0m of the boundary ' - How do I calculate that I am thinking, is it a summative method, just add up the various resistances of the components or is there a more sophisticated way I am wondering. 'Please confirm the provision of network access to the new dwellings.' - The is only one dwelling and one wonders what network they are referring too, is it roads, is it ADSL, is it the sewage / electricity / gas. Any thoughts greatly appreciated!

Welcome to THE forum, sound like an interesting project with loads of challenges, you can look forward to support and advice. I guess we would need slightly more detail to help us help you but one thing is for sure the self build game is not for everyone. A journey of 1000 miles starts with the first step - you will go through a lot of ups and downs but in the end what does not kill you makes you stronger and by self building you get what you want, where (or close to) you want but not always at the price you want or when you want. Just have a reality check every so often and keep your head down.

Welcome to THE forum.

We are on page 20 so 44% of the way to boxing in!

No it is actually a brand of chocolate which you melt onto the pipe and you get a perfect reading. NOT

Seem to be drifting off topic a bit.

I suppose there has to be an upside.

Quite apart from the above comment you need to stay off the channel cos since I did my calcs things have changed a bit. Now at 35% pages and post number and that brings the fateful day down to the 4th (ish), 'in normal traffic' as Google says. If I were you I would start polishing the crown in readiness for sending it round M25 and up the A1.

Just for info this wonderful thread is now at 32% of the length (pages) and at 29% of the number of replies of the 'other thread'. It has been going 4 days approx - that means, at current rate, it will overtake the other thread on the 6th-7th March Unless we fix it FIRST. @Nickfromwales what is the next move, or is that coming in your next missive!

This and evidence above demonstrates that he and you are 'our kind of people' you must miss him as I am sure we would, had we ever got to know him. Although in a very real sense we are getting to know him through his approach to heating systems and what might be called 'boys toys'.

At the current rate @newhome will get past you in a couple of weeks. You can increase the page use rate by inserting loads of photos by the looks of it.

THIS POST GOT WELL OUT OF SYNC BUT I WILL LEAVE IT NONE THE LESS. Sorry - needed to sleep - but yes it does have to heat up a large amount of water but there is no waste and you may have hit the nail on the head of how your system is configured as the boiler only heats the top of the tank so it should be quick to provide heat at the top of the tank for high grade heat for showers / baths etc while the rest of the tank can run at a lower temperature to drive the UFH. @PeterW talked about stratification - this is where the tank can hold water at different temperatures up the tank in 1,2,3 or more (depending on tank size) layers. You might expect convection to sort this for you but in fact you get stratification. It may be that the plan included this phenomena so you heat the top for showers with the boiler and allow the solar system to do the rest. As, in all your copious paperwork, I have not spotted any notes on the design goals we may never know. Lets wait and get a set of temperatures from a single source (thermometer) that can be compared and then we will know, as today is a sunny day we may even get an indication of how well the solar is working. You probably need to label, actually or in your head, the various target points and pop the results in a spreadsheet, then take the readings at each target at intervals which would allow you to plot what is happening across the system.

Yes but if the immersion is powered from one of the cheap rate power lines it will be much more cost effective than the boiler in cheap rate times and it may, may, also help the water being heated in the top of the tank by the boiler heat the whole tank because it will set up a convection current in the tank. The immersion heater is all bar the shouting 100% efficient in that all the heat goes into the water, none is wasted - until it gets to the outside of the tank and leaches away into the air.

There is at least one immersion heater there, what is that doing I wonder, is that the prod the system needs to syphon I wonder.

Milk in Earl Grey, my sainted Aunt, - somebody needs to spend time in the appropriate gulag for 're-eductation'.

That makes sense - in schematic the pellet boiler is the prime mover, with the heat pump doing a low grade heat input at the bottom of the TS and coping with the UFH if it can.

Yes but able to afford to leave a 24Kw boiler on all day!

The difference is bonkers and means the losses are massive. Lets wait and see what the temperatures are at the various points when you can measure them.

Hmmmm... That sounds Odd - loosing 20Deg across the circuit feels very high and is incredibly wasteful. Might need to insulate the pipe work from boiler to Heat exchanger and heat exchanger to TS as well as the heat exchanger. (Unless somewhere there is some system in control of the TS based on the Boiler water temperature which feels like a remote possibility.)

Great to see the meters and the Teleswitch (Which is the thing that tells your 'system' that cheap rate electricity is available.) The difference between the boiler output temperature and the TS temperature - 20 deg loss seems high and is interesting, It will be good to see the temperatures of things when you get the thermometer tomorrow, as this this will clear up loads of details. PS was the TS temperature rising, even very slowly above the 45 / 50 or was it dead stable?

This is design dependent so your SE will tell you if the internal floors are in any way structural as they may well be.

Look its horses for courses. I have the Lidl corded one and it is great. I also have the dewalt cordless which was a gift and is also great given that I have other Dewalt tools so a number of batteries. The thing is not about cost is about value in the end the choice is down to the way you see the value proposition.