scottishjohn

email them --but use googgle translate and send it in both english and french

the "amptec" boiler already has temp controls etc simple loop with divertor valve+ pump and it will just deliver water at temp you set. I used one as my inline back up for solar thermal UFH system found one very cheap compared to normal proce --brand new on ebay or use an electric shower unit maybe would work the same . from what i can see a willis heater needs a tank to fit it into and then you back to thermal losses

using a variable speed pump would make you think that too much heat is a bad thing ,they are trying to lift thetemperture of whole mass evenly ,so localised boiling must be a problem and that will be why they limit the electric type to make sure plenty of volume around element at a low temp when it starts up with a thump

its called an inline boiler --"amptec " unit

how much cheaper are the basic unit with no electric element --are they much cheaper?

maybe the heater element should be in the water system AND pumped around a closed loop ,then heat distriibution will be same as early unit could all be run from the pv circuit

35000 full cycles prpobably not partial cycles ,which could alter results and I, m guessing that the tests were done with firsttype water heated unit --not electric element type unit-- will be total differnet heating path I,m not scaremongering suggesting possibilities for discussion

is the real problem one of cycles ?. i know that lithium -ion batteries all have a max cycle capacity ,my impact gun is 2000,after that the charger will not charge it , and every now and then i have to totally flatten battery to make all cells equal again whe i asked they told me it was heat problem and at end of life it would just keep heating and not totally filling up . I understand its not electric,but if it was water and you kept boiling it and freezzing it would change its make up ,maybe the pcm has same problem --so they want to make sure the servicelife is not shortened by lots of small charges?? electric cars are same --run them down to 20% -charge up to 80/90% for best life ? or is it like "bomb suprise" where you have ice cream inside someything but lots of heat on outside+ latent heat delays the heat flow you can ahve ice ,water and steam in same bucket if you add alot of heat quickly and the electric element will heat from one end not evenly through out the medium

yes wire them in a cascade arrangement,like solar thermal buffer tanks triggered by the requirement for a unit to go below 50% charge before swopping to next unit ,that way you can use your PV could you not?.or maybe have a divertor valve when excess PV to make it run UFH heating to drop it into charge zone ,then divert back while its charging--alot of buggering about i know but a solution to use what you got to best . Is the real problem one of cycles --most lithium batteries have a maximum number of cycle you can use them for --maybe all these little charges have same effect long term and would reduce full capacity life span

the obvious answer is send them a link to this thread and then the make their own decision

so what you are saying is it should never have been released then ,but they have made the pcm case thinner than the first one from what i read . there should be no swelling of the pcm case -so they have made it too thin--any way its basically not fit for purpose - and if you remember i said this very early on when i referred to "tombstone technology " as they called it in the aero industry -i,ll revisit this thread in a years time and see what they are like then once production is moved to china !!.which it will be , nothing more certain.

so that comes back to what i said before "bean counters"--they ALWAYS FXXX engineers designs

I understand what you say --but that is even worse really in some ways- it means no one of technical knowledge oversaw the drawings for final production line build spec. and you say the new one is still over packed,as you show by pointing out the witness marks of wiring -so who is listening at sunamp?

20k fine will be cheaper than finding a replacement tree of same dimensions and importing it from usa they knew what they were doing -- If they could stop the building works until they replace it AND give them the fines as well ,cos the fine is for cutting it down that might make something happen --but we all know it won,t 40 houses that only £500 per house --nothing could be 10K of wood in that as well?

sounds just like d&g council . you get planning ,but then all the details of the build have to cleared by building control ,as you also have to get a permit from them and they are the ones that do all site inspections. you send your plans to building control and then there are a dozen things that they don,t like ,even though planning passed it,all planning do really is "pass" it in principle.then building control comes takes over I know cos i,ve had some problems like that with them I can understand them not wanting you to connect to a victorian cast water main --digging it up+drilling holes in it etc could just make more fragile +they don,t want to replace it any time soon check and double check on everything that requires "imperial authority " and get in in writing --been caught like that as well

I hope you are right. but they need to be made aware in no uncertain terms that these sort of problems will not be tolerated, the idea that a bit of case deformation is ok and people need to live with it is just nonsense. my architect friend who is refurbishing a castle with its own hydro scheme , and when i linked him to the sunamp site was very keen ,as he would need 10+ units --he will not be very keen when I forward these forum postings on to him

the way brexit is going--I hope - hold off buying property till after march --£ could crash and everything will be cheaper then and all those too stretched with loans will need to move things quick . cash is always king if that happens

so just another quality british made product then. like i said last week "bean counters " trying to cut corners

its looks pretty certain that you have found the reason for panels bulging --pcm stuff is getting over hot and expanding more than designed too.

In scotland we could split the police station and make it into units --which would be rated seperatly --so you could let off other bits --or not --but rates would only be on what you used

another price for ICF --velox system to give 0.15 walls £50 sqm I should clarify that is just the wall value not including exterior or interior finishing which of course will drop it some more

yes i have 8 zone valves on my system and they were all danfoss --all failed same way at least once in last 15 years --micro switch every time the load rating is too low on them to be turning on a big pump --so yes don,t use danfoss --after changing lots i changed make of units --problem stopped

tlaked to the man from velox and it does look like a good system for the self builder , costing seem less than durisol and comparable and cheaper than some poly icf types --but looks much stronger could be alot cheaper by time you looked at poly bracing system and costs and would seem to be as flexible as your imagination for shapes you can do . also the floor system is attractive for basements /garages under living accomdation still looking for the downsides If you know any don,t be shy

both solutions will work well as when it is finished and floor attached to both wallplates and joist it is basically a solid lump thats why your engineer is not worried about full support on the end of the joist ,cos the load is spread over all components joists ,wall plates and floor itself and the load path is directly up the vertical brace into top stringer of the joist ,the actual load on the end will be very little as it is not braced and will bend to a degree and transfer the load up the vertical path of the brace that is there --If it was designed to be strong enough to start with the ends trimmed off its not on a wing where things are deflecting and bending all the time ,where a solid unit will just fracture -stresses are totally different . I give up --you all want to make it more complicated than it really is ,the making up of end fitments will take much more time and effort than a simple doubling up of beam and more bolts to wall do what ever you like

it will be minimal but to be super sure i said double up on bolts and if ends of joists are packed after fitting they can go nowhere --no space means even if there is a twisting force it can,t move cos theres no where for the plates to go. Isaw original spec was one bolt every 600 but joist were 400 spacing --i would have done bolts at same as joists anyway ,and if you still worried about something that can,t happen apply a layer of no nails or whatever behind wall paltes then load is pread over total area how many diff solutions do you want to a simple problem i suggested a soltion to fix it that way aswell take your pick both will work fine and with double wall plates you got twiice the area to glue + double screw the floor too if you want engineers have said you don,t need full support on the end of the joist anyway --so can,t be much load anyway--=if you believe them me igo for belt and braces always