Onoff

So...2.8kW is all all nothing. With 3 x 1kW it could have been controlled to gradually ramp up further limiting overcooking. And how hard FFS to make the "immersion" removeable?

Have a look at Nicks comment about it being 3 x 1kW:

Baths been in use for months. No.1s only in the wc so far! Tomorrow night I'll likely tidy the silicone in the bath side tiling now I've the Fugi kit. Stil can't decide whether to rip out and redo the vertical silicone one side of the mitre in the shower corner. Might ask SWMBO if it's going to annoy her when she cleans it... Reckon I can get the joints neater:

Tempted to live with the wide, tapered grout line on the basis the sink will hide the majority. Just hoping it doesn't crack. If it does I'll silicone bead it assuming I can get the gun in! When this has gone off I'll silicone bits around the shelf:

Was sure somewhere I read they were changing to 3 x 1kW to allow for some redundancy if one failed... Virgin coconut oil at Lidl for £2.99/300ml. Melting point around 24degC...just thinking out loud...

Do it please. As I started reading your post I was wondering if there was a vertical access "tube". Is the existing thermistor chain removable? I wonder if SA would consider a retrofit sensor array a better controller could make use of? Is it one immersion heater in these units or 3 x 1kW or am I thinking of something else?

So a vertical string of multiple sensors in series that trip out a little before the crystallization temperature?

Let's hope it's not your stud detector! ?

Don't you then chance overcooking the PCM below the raised sensor array? Isn't it that it doesn't change state all at once but relies on convection currents that can't be "rushed"?

What's the test, a flood test?

One for all the big white block fans: That'll sit nice on your rendered coffee table!

It pays to have every detail in writing!

Have a word with Colin: And he'll direct you to Aldi/Lidl!

I'd have gone with "Hope your bastard wet room corner falls aren't enough and you end up spending a fortune on folding glass doors or worse an unsightly enclosure!" Not that it's worrying me!

If they haven't and you weren't there to see it done and take note of the materials used you've only yourself to blame! ? Hopefully they did something like this: https://www.ikogroup.co.uk/2013/07/24/iko-permatec-hot-melt-waterproofing-system-installation-video/

Erm...that looks like felt not asphalt. Asphalt is boiled up in a bfo pot and trowelled on to form a seamless continuous layer. What did the spec say?

I thought this was going to be a seamless hot asphalt type thing this time around?

Not an issue, SA will pay to beef your structure up! ?

That's a bit unfair on the installer, poor choice of words maybe? More a case the installer shouldn't have to over specify. The installer doesn't decide / stamp the rating.

So is it the case that an old model, smaller sized Sunamp PV worked "better" than a new, larger sized UniQ because of limitations imposed by SA on the new range? If so SA should have said a long time ago they were redesigning for a mass market and that to achieve similar results to the old PV then go up a size. The customer now has to bear the cost of the uplift due to the value engineering that's gone on? Taking the long term view then tbh, IF the tech works I'd live with that and another £600 or whatever for a couple of units. I'd always be thinking though that I've a dumbed down model that could have been better.

Did he remove all the old stuff, clean and reapply? What silicone did he use?

Not any more, all gone!

Presumably it's feasible to plumb for a TS/UVC in such a way it's a quick swap if SA ever sort the issues?

Picked this little tool up at the motor factors. Far superior at removing silicone from the tiles than the Stanley bladed window scraper type: £2.50 for the tool and £2 for a pack of 5 spare blades (both + VAT).

FFS you spend money on stud fiinders like I do on silicone!