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What’s the Service schedule for anodes in a glass lined cylinder/heater? I’ve got one (a styleboiler ecosyn80) at my off-grid property and I’m curious to know when I need to change it. Manufacturer’s instructions are somewhat lacking.

@BramcopLAN wiring, for extending the display/controller: Thanks for the email, At the PCB end, there is actually some screw terminals just above the RJ11 jack, this is 4 pins for the power and data so you can use this one end and disregard the plug. For the screen end, you can use a RJ11 adapter with 6 pins, from memory the two outer pins are live and the 2nd two outer pins are neutral. The middle pins are + / - data. (Carel double the power cables up to overcome volt drops on the prewired cables) A standard CAT6 cable is normally fine for upto 30m runs though. Best regards

@Bramco I’ll dm you the rj11 colours/pinouts for the carel pLAN wiring.

I’ve got smiths ecovector Units. They’re ugly, noisy things but they fitted where they needed to fit and they work. Super simple to wire and control too which I liked.

Nest + weather comp for us. Nest gives the wife an easy to use hi-limit (which is only rarely met in shoulder months). I consider myself a good designer/installer. heck, even the Samsung controller when used as a room stat is just that, an on/off stat. It doesn’t do load compensation, despite what people have been led to believe.

When I was using mine for cooling yesterday, using ambient temp switching, it just said ‘cooling + dhw’ on the display. So I assume that dhw always takes priority. Fine for us as we use a moderate amount of dhw all year round

The plan was that when the fan coil is switched away from ‘ventilate’ to either ‘off’ or ‘heat’, the cooling relay is de-energised and the NC connection remakes the di-6 to di-common connection. My fan coils are smiths ecovector units, very simple on/off controls.

Interesting, thanks for taking the time to experiment, I didn’t have a chance to do so today. My plan is to come out of my room stat (unfortunately a heat only one, used as a hi-limit stat) and go through the NC contact of my din-rail relay and back to di-3. Switching any of my downstairs fan coils from heating (fan won’t run till the thermal switch is closed by the water flow) to ventilation (fun runs irrespective of water temp) will energise the relay and connect di-4 to di-common, through the NO contact. As soon as the fan coil is switched off, unit returns to heating mode under thermostat and weather comp control. I have a good few spares cores in my comms cable so can bring di-3 back into the house.

I need to check that, but I’m pretty sure the time clock will override any external calls and you’ll see ‘off by time’ on the display - other options being ‘off by change’ and ‘off by a/c linkage’….

I suspect it’s a manual error rather than a definite difference between the single and three phase models. They use the same p.CO controller in both units. I know for a fact that the single phase ones can do cooling, the CE display/demo trailer has a unit there running a fan coil in either heating or cooling mode.

Coil is right at the bottom, I’ve yet to see it ramp either the pump or the compressor down during a dhw charge.

OSO (Vaillant) slimline for me, it was £500 on eBay 😂 1m2 coil, 9kW pump - reheat times are perfectly acceptable and the coil can take all the heat pump can throw at it.

It appears that appliances direct have stopped selling these - as of last night I couldn’t find one on their website.

Page 17, the 3-phase section of the manual, shows the digital inputs for heating and cooling and their corresponding terminals on the green plug.inverTec_Range_Manual_Version_6.6_Final.pdf

Fan mode - eco, enables weather compensation. On any other fan mode it runs at a fixed flow temperature and/or a fixed dhw temperature. you will 100% want to re plumb this to direct weather compensated heating and use the TS just for dhw, otherwise come winter time you’ll have radiators that are too hot and a terrible COP.