dpmiller

floating or sunk?

pennies, as I recall

graphite EPS takes it to 0.031 or so

whilst/ as all the stats and cutouts look after the safety side of things, I'd personally be thinking more about the possibility of (say) a stuck contactor going unnnoticed and the immersion taking over tank heating duties unknown. I certainly wouldn't presume that an SSR was totally trustworthy... /but then I come from a place where accidentally leaving the Willis on was punishable by death

is the oil/fuel ratio correct? What colour is the sparkplug?

Another vote for a layer of EPS. Graphite if you can, it's even more gooder.

how long is this 32mm run?

ASHP output will rise as the buffer heats, the system attempts to keep a constant DeltaT

yep, that is the "bucket" that makes the gully a trap.

technical info says otherwise?

I don't have any answers, but do bear in mind that NIE can be a bit different to all the GB providers so...

doing it after boarding surely risks a "plasterboard tent" scenario?

there are many complexities around linking a boiler stove into another scheme- will you have MVHR, will you be cooking on gas or electric/ do you want an extractor fan, and how big a hot tank have you room for? Even if you're only thinking about it, you better look at these things in advance. You may need e.g. a mains water supply going to stove for overheat protection etc etc

stops high temps from getting to the floor

one benefit of a TMV on the manifold...

We used Shiedel's Ignis Protect to deal with heat protection and airtightness

is this just at the bottom, draped into the gutter?

does the adaptor not unscrew to leave a 1/2"?

MLCP fittings seal on the inside of the pipe don't they? I'd be tempted to fashion something up to put a crimp on the external sleeve- a U-bolt tightened down on it a couple of times maybe?

^must be simple if shaky-hand man can do it.

£6 is 10 litres of oil these days, which would run the average oil boiler for about 4 hours?

is "aircrete" actually noted tho? Ordinary blocks can come in 3.6N too...

Willis ftw...

https://apc-gb.com/wp-content/uploads/2018/07/BS5252-Ral-Cross-Reference.pdf 7021?

maybe to you, matey...