dpmiller

not enough to autoclave them Jeremy?

School's a nice short walk for us- about a quarter mile- and I enjoy being one of the few parents there every mornng (business trips excepted) as at P6 most of the kids are just dumped off.

https://www.bes.co.uk/manthorpe-radiator-pipe-guide-seal-concealed-twin-exit

fixed IPs or auto?

depending on the sensor, a series or parallel resistor might be useful here.

a pack of stick-down vinyl planks?

under.

they certainly read well, but beyond that I dunno. http://www.laileyandcoates-international.com/pd.jsp?id=21#_pp=0_477_4

surely choosing to live in an area where the air was cleaner would've been a plan, if it's an issue?

They've had those for a while, I think it's the Lailey & Coates unit, looking at the colour and controller

And we're validated. Edit: crappy link removed.

Roll on the arrival of the FHT stove and it's ability to shift a larger proportion of heat to the water side without compromising the burn.

@richi I used a din-rail timer that I had kicking around and true off is generally the more expensive timer variety, but something like this would do- https://www.aliexpress.com/item/Power-Off-Delay-Timer-Time-Relay-0-3-Minute-3M-ST3PF-with-socket-base-AC-220V/32607096370.html permanent feed to it and the current pump supply signals it.

you want a timer module with the function "true off delay". That's what I did anyway...

Planning application is IN. Including a five page Design and Access Statement which is frankly so well composed it made my jaw drop; thus far, hiring a PC was an extremely good choice...

so the red button locks the actuator Open.

Having watched a number of youtube videos of defrost cycles, I'd say that a heat cycle of 10mins is waay too long and no more than a minute or two of heating should suffice. @JSHarris have you ever watches the defrost to see how much heat is actually needed?

older weather comp controllers for oil aren't much more than an Optimum Start device AFAIK.

Does your ASHP do weather comp?

so did Kingspan change their specification over the weekend?

We have an Arrow T59 insulated stapler for jobs like this.

these guys do small underground *and* freestanding units https://www.ebay.co.uk/itm/HYDRA-ST3-70L-Grease-Trap-Low-Commercial-Use-470mm-L-x-470mm-B-x-475m-H-/272715158658

0.5mm 2-core flex ought to do it nicely, or whatever you have. Cat 5 even. The resistance of the NTC sensor will be massive compared to whatever you use and there's practically no current flowing...

As long as there's no massive step-change in daily weather, the normal adaptive turn-on based on historic rate-of-rise should be plenty to look after the seasonal changes for the average system. Likewise approaching setpoint ther's plenty of fuzzylogic/ PID controllers around. In fact, I wonder if anyone has ever attempted to use a standard DIN panelmount controller for room or whole-house control; they generally have a pretty smart Autotune PID system that will sort the parameters during the first heatup and overshoot cycle...

need to force the hysteresis then of that accelerator resistor in the old mechanical stats. Could you put a small resistor across the OP to cheat some heat into the 'stat? Another option for those that don't have great control of the flow temp might be one of the cheapo Chinese touchscreen stats w/ floor sensor- set the floor limit low and it'll override the room setpoint once the heat is into the slab.