HughF

I’ve got one running with no pipe extensions and one running with a extension kit. Running on the supplied charge, haven’t changed it. No issues with either of them.

I run a 9kW through a 1m2 coil - try it and see how you get on. if you do end up using the plate, you won’t get any thermosyphon effect through it. you’ll need to pump the dhw side.

Put it in the garden. It’ll reverberate something terrible on the flat roof.

Manufacturers guidelines are often wrong/poor design choices.

Back in stock, new model by the looks of it. I’ve ordered one for a room I’ve opened up/turned into an office/put the contents of into a skip 😂 will update the thread with the details of the new one.

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.