dpmiller

I think it'll depend more on the gas than the compressor, tbh. You need to make enough pressure to liquefy the gas so it can then be expanded again. The compressor will only be able to do this above a certain speed, and then the expansion valve can only throttle the flow a certain amount too.

^those v-tac grill battens are great, nice light off them.

yep, but I'll stick it on here for completeness as it's relevant to the thread CE-iVT9 EN14825 64.181.20.04362.01 Rev.00 TR Performance Pages.pdf

Absolutely. Same with COP too as the required temp combos may result in the inverter throttling-back as it strives to achieve the most efficient pressure ratios. Speaking of, did you ever look at that TUV document I sent you for the CoolEnergy unit?

^yep DC injection would do it. I've just re-read the TUV report for the CE-iVT9, and it quotes standby at 9W and the crankcase heater at an additional 33W

Pretty sure most quote min and max outputs? Ours is quoted at between 3.38 and 9.51kW depending on temperatures

Hopefully we will find out with a bit more investigation. How low could a compressor motor go in the power factor. 0.5 is appealing. but it's not being "motored", it's a resistive heater at that point...

septic tanks need maintenance too, and more often than a TP

You can get riser extensions for many plants, which gives more flexibility on the invert.

Lol, I was guessing the north side of the village for some reason...

I can confirm standby on our CoolEnergy unit is about the same as Daves'. Neither sump nor base heaters are actuated in standby.

mightn't be for that purpose actually. If memory serves there needs to be weeps above a fire barrier too- are there any more at the same height?

@btm3055 not quite so far actually, the site is on the Mountstewart side of Carrowdore

I used some spare MVHR duct to run cables 25m out to my shed recently. We pulled a 6mm SWA, a multicore Hituff, a cat5, and a drawcord, all through in one go with no hassles whatsoever, and that included one slow bend and 2x 90deg soil bends too...

waves from up the road a bit...

25m of duct isn't dear at this point.

yep. I've some info in my build thread

Cool Energy...

I heat the tank (from the coil at the bottom) til the probe at the middle is 52. During this process the flow temp will be a few degrees higher so the top of the tank might be as high as 57. The DHW coil is above this probe. But when the heating is running, the flow temp is 42 and this continually buffers energy into the bottom of the tank (or extracts it if the sun's been out during the day, say. With a 9kW heat pump and a nice big coil, the system seems happy to recover during and/or after showers, without the DHW falling far enough to upset the shower mixing valves. Obviously if the sun's out the diverter can have the whole tank up to 90c, but it starts on the upper immersion so the top of the tank only rarely needs to be actively heated by the ASHP anyway...

I've gone for the TS/ ASHP and I contend it works perfectly well as long as you have the probe position correct and have a sufficiently large coil. Plus there's the possibility of other inputs like a boiler stove. in actual fact I've gone direct for the stove, and indirect for the ASHP.

I've done this in the new shed- clean bench/ dirty bench.

oddly enough, I've seen this kind of setup before- using a PRV as a filler. My father's house is set up this way (but with a stopcock on the supply), and I've seen other examples too. Filler loops only really appeared here around the same time as gas combis...

Are you on mains water or a well and pump?

I have one of these: https://www.amazon.co.uk/Universal-Underfloor-Heating-Thermostatic-without/dp/B076KK1KQF/ref=sr_1_10 and it'll happily run at very low temps. Dunno if they supply to the UK any more tho?

You'll need *at least* 1500 width for the machine. What size dumper?