Nickfromwales

A TS will do a multitude of things, specified by its design. These are almost always a bespoke procurement but not very costly considering. A large TS will do space heating and DHW without issue, so no problems there. Just order it with the appropriate tappings and you'll be sorted. The cylinder stat tells the boiler to fire, so just set the boiler flow temperature on the boiler control panel to the temp you want, which will be the same every time it fires. That way you can dictate the flow and return temps to maximise on condensing efficiency. They are in comparison but the equation requires a bit more appreciation of what the SA unit brings on returns and running costs. Annual G3 inspection will set you back around £120 a year. 10 years is £1200. Plus you'll have the inconvenience and time wasted meeting an engineer, making the appointments etc, and the discharge pipe runs. Plus, add in the extra energy losses which you pay for. An UVC or TS will cost you its original cost every 10 years. A SA will earn its keep. Also, size vs energy density a SA is around 1/3 - 1/4 of the physical size of its cylindrical counterparts. A big TS is cumbersome, a SA can fit where a slimline dishwasher would. Im not blowing smoke up the arse of SA, but its hard not to promote them when they have such a good place in the market. I remain 100% impartial in my comments on BH, and these are my personal opinions. If capital outlay is a factor then simply choose a cylinder as that's the cheapest route to a system that will suit your immediate requirements

Bingo

Yup. Spoke to andy about that too. They're a good product for recovering heat that would otherwise be lost, and the refill flow rate for those types of cells are better than any combi or inline electric heater could ever dream of being. The limit with the SA units seems to be imagination.

One will be a mid position and the other a diverter. You'll need the diverter, eg heating OR hot water, with the former being able to sit in the mid position and give both simultaneously . An ASHP can't do both together as each has a specific flow temp.

"Full steam ahead"!

They're not just filters. They also look to be the NRVs too. .

Twas a strange looking fella.....straight hair and curly teeth .

Like gas, they have to train, qualify and maintain their status. A regular spark could fit a 'non MCS' PV array, just like any tom, dick or harry could. Would they be good at it ? ?

The cables should be vertical or horizontal from each outlet ?

Enough of this crazy bottle talk Remember this guy off EB? Hotun

Late to this one sorry. A bit tricky to get high capacity / high flow DHW without some serious grunt. A large TS will deliver 20+ Lpm, and, if boltsrered by a whopper of a gas system boiler, will provide that nigh-on constantly. An UVC will do the same but would have to be sized bigger as you can't hear an UVC as quickly as you can heat a TS. I fitted a 440L TS for a customer and complimented it with a 300L cold mains accumulator. I had 2 showers running flat out, plus plenty enough DHW flow to open both the kitchen sink hot and the cloakroom hot tap, all simultaneously. That flow drops off as the accumulator depletes so sizing both accordingly is an important design consideration. "You get what you pay for" etc etc. Forget a combi, that's obviously not even a consideration, and if your stuck for space you could go the SA route, but they're a pretty penny compared to a TS. You can now, I believe, ask @AndyT for prices for a dual port SA setup that would be comparable to the above. The dual port have two separate heat exchangers so one in for primary heating flow / return, and another for potable ( DHW ) production. The price premium is significant, but with no G3 consideration and time / labour expended on routine maintenance ( draining down to check the EV pre-charge which should be done every 6 months ) you'd have paid for one in ~ 10 - 12 years which is a good pay-back IMO. Decisions, decisions

I rely on seeing and feeling the 4 corners when tiling so I don't see them featuring on my jobs TBH. That's the way I know when the adhesive has set that all my grout lines and intersections are laser straight.

300mm deep and a turf spade wide will suffice for an MDPE. It can go uphill - downhill - whatever. Just drop to manhole level AT the manhole.

As long as it isn't a chimney eg vented to atmosphere by exiting the roof from the inside of the dwelling, then I'd really not ? the bed over it TBH. Insulate the soil pipe with some self-adhesive armaflex and worry about world peace instead . As long as you have a SVP to atmosphere elsewhere on the sewerage network that leg can terminate into an AAV ( air admittance valve ) so there will be no cold 'draw' so very little thermal impact.

You need to get the mix spot on to use those too. Do they still allow a 2mm gap or is the plastic 'bar' bigger / wider ?

So this is a 'communal perimeter' we're discussing here ?

....dictated by access and H&S stipulation are they not? Heras fencing is the norm, and a hedge only really defines the boundary rather than provide protection, ( the main consideration ), with security really a side effect of having to fit it for protection. H&S don't care if you get burgled .

Depends if the tiles are completely true If not then you need the human touch to fettle them in to give half n half to absorb any undulation from the centre of the tile to the corners, only really apparent on 600mm and above TBH.

@daiking Can you just drop a 25mm alkathene pipe in low enough to avoid ground frost ? You could always fit a 'pee only' Saniflow unit later on then when funds allow? Edit : It may have to be 32mm MDPE ( aka Alkathene ) or an insulated 22mm speedfit pipe to get the same internal bore as the typical 21.5mm discharge pipe. Still cheap as chips to get you future proofed. .

I do the same with a grout float but I only ever do that on sheets of mosaic to get them smooth as a baby's bum.

No need to box and insulate imo. Ive been plumbing for a quarter century and have never seen it done once. Having long external runs is 100% permissible, and apart from aesthetics, is quite common practice.

?

1,000,000-1 odds . I'll shut my mouth.

Hundreds of thousands, if not millions of uk homes have CWS tanks in the attic which haven't leaked for 20/30/40+ years ! "If it ain't broke" and all that .

Hi and welcome. Your plans look really interesting and I really like the mono -pitch roof. Your plans shows in a few different orientations, which ways south ? First observation is move the stairs to the mezzanine further back to get some head height as you hit the top step. . Ill add later re the plumbing / heating ?