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I'm definitely warming to the idea (so to speak) but the problem I have is my system is an S-Plan. So I would need the controller to open the MVs over 240v AND then talk Opentherm over the twin data cables. I've read that some people have done this but not convinced as I think it would need the...

Not simultaneously obviously but for example if your heating is on and has reached steady state and then your controller suddenly wants to heat up the HW then it should instruct the boiler to go to max temperature and when finished revert back to opentherm (or in your case the Valliant system...

Lots of old threads and questions about opentherm on an S-plan. Anyone know if any of the controllers solve the issues? i.e. open the respective MVs then allow opentherm to take over when its heating? HW to take priority and run at max temp etc ?

A couple of interesting replies - thanks. What controller are you both using ? I started looking into EPH and liked what I saw. The main down point seems to be cosmetic - it looks crap. Nest v3 is another option I suppose. It seems there aren't many....

Wouldn't even think about bending the legs without a spring.

I'm not missing that point as yes that's the entire idea isn't it? Maybe I'm guilty of not restating that fact in my post. As you say that's the entire idea. I leapt forward and asked what problem does it solve? None of this explains how and why OT AND WC (or load compensation AND weather...

I look forward to your explanation as to why you think WC and OT work well together......

I haven't seen much information about exactly how and why you'd want either or both of these. I suspect those that don't know just say "...the boiler will use the WC and OT to work more efficiently..". Yeah but how ? What problem are we solving? Lets deal with that first. So its said that with...

16 years since this was updated. I thought I'd ask in the same thread though rather than creating a new. So does anyone have any good/bad experiences with RO filters in the 2020s? Any makes and what sort of costs to replace the filters?

Thanks a lot Hugh - it was worth waiting for a high quality answer. Since my last post, I spent part of yesterday alternatively jetting and then sucking up the waste with an old but quite powerful wetndry vac. Well, I fairly quickly got to the point that water would drain at a moderate speed...

So got the drain attachment and it does absolutely blast jets of water out of it. In 2 minutes its cleared enough to not be totally blocked but still think don't think its full flow. A lot of silt and yet the soil here is clay. Pretty sure its a trap as water always stands at the bottom but...

Hello All For years now, whenever it rains we've had some flooding appear. Its taken me a long time to get around to looking at it because the internal area is really more like garage quality. Its a passage with a rough concrete floor and brick sides (unclad). There is a shared sewer about 6ft...

The down pipe is private. The sewer is adopted by Thames Water. 50 years ago they would both have been private.

Asked again for obvious reasons.

Just measured it and its actually 90 or 100mm so still pretty small.

Wasn't sure whether to put this into "DIY disasters" . Basically I've built my shed base about 70mm away from the boundary. Now the boundary is only about 2M long because it is to an electricity substation. As those far more experienced that I will know, that is a problem as the roof overhang...

Could I fit the membrane to the outside of the studs and then cladding direct on to the studs? Maybe it depends on what cladding I go for but featherboard seems cheapest....

Building a largish shed (5M x 3M) and wondering if I need thin OSB or ply all around the external frame ? i.e. 4x2 framing uprights, then 9mm or 12mm OSB then membrane then cladding. Or can I do without the OSB ? Are there pluses/minuses apart from cost?

Had the service and the engineer said the working pressure is too low. When running at maximum, the pressure at the boiler is 17.5mbar. Pressure at the meter is 17.75mbar. Standing pressure is 23.5 at meter and 23 at the boiler. So I fished out the manual for the boiler and it says both...

Superb - I'll give that a go thanks !