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@fixitflav - true, HIU is untouchable. Replacing HIU is rather a hypothetical discussion.

Thanks for sharing. I believe most of them will require a lot of KWs / power which i don't have in my single bed apartment. So probably wont' work.

@gassymark - could you give a hint what's the right name for HIU/Heater/Boiler in one unit?

@flameport - thanks for explaining. Basically i am back to square one. Unvented indirect cylinder even the smallest 80litres is a huge tank that occupies my entire cupboard. In case I want to use communal heating via HIU i am forced to place a massive tank in my cupboard. I doubt that even...

In case i decide to replace my current boiler/tank with something like this: https://www.amazon.co.uk/Ariston-Electric-Inclusive-Manufactured-installed/dp/B093LQJX59/ref=sr_1_5?crid=1PCVEY5R0TGC&keywords=combi+boiler+100+liter&qid=1680976368&sprefix=combi+boiler+100+liter%2Caps%2C91&sr=8-5...

Thanks, it's clear. Electric combi boiler is a "no-go". Since I have no gas, i should forget about combi boiler. Having a tank in my current setup seems to be a pre-requisite. Therefore placing a smaller tank, saving some space inside the cupboard and installing a softener seems to be the...

got it. Thanks. But then if you think about it.. does it mean that typical user of combi boiler is someone who owns a private house and able to request/install more power from the supplier like E.ON (example).

@flameport - 210 litre unvented is what they put in every apartment irrespective of it's size. Placing a smaller tank would get me some extra space (possibly enough to put a softener). However if there's a chance to get of the tank that'd be my preferred solution. Could you please eloborate...

You mean in my current system? I have not.

Hello everyone, I moved in into "new build" back in 2015. Single bed apartment with the following configuration in place: 1) Communal heating where HIU is installed in every flat. Rossweiner heat sonic. 2) KINGSPAN RANGE TRIBUNE HE 210 LITRES UNVENTED VERTICAL PRE-PLUMBED INDIRECT HOT WATER...

thank you so much for your help! I am glad I decided to ask for advice instead of trying to connect via channel 1. Would need to take it back to screwfix now.

Could you explain please? Does it mean HIVE receiver in my case won't work?

Well assuming that the wirining center is actually sending 240v Live down to the programmer and does not have a 12v transformer in it....again a meter would tell you. - Your assumption must be right. Where else 240v would come from? Or do you think it could be that PB2ctc sends 12v signal to...

Thanks for the explanation. Took me a while to digest. PB2ctc just acts a a light switch it provides no 240v live feed, it switches the wiring centres 240v live and hence only needs a couple of aa batteries to close a micro switch. - It obviously requires some voltage to run the display and...

I would suggest that the wiring centre is just live down to the clock and that is being switched off or on. - Possibly. Can't confirm whether it's live connected as i don't have access to it. But what it has to do with the way programmer gets powered? Original polypipe is 2X AAA batteries...

in your case do you have permanent 240v at the programmer ? -Yes, that's been solved. Works fine, paired with the hub and thermostat.

Yes, you are absolutely correct. I simply want to be able to turn on the heating remotely. In such case HIVE receiver will act as programmer (turn on/off) and that's all. In such scenario no rewiring is needed. Current polypipe programmer does the same (except that is has a terrible...

That's the problem. I don't have access to the unit so i can't really check the cables. I was just hoping that someone just by looking at the wire colours could tell what represents ON or OFF. For instance if you look at CH1 (polypipe) you would think that BLUE - ON and BROWN - OFF Or am i...

System boiler. Polypipe PB2CTC programmer is connected to PB1ZM multizone unit

Hello everyone, I'd like to replace my DUAL channel Programmer made by Polypipe with HIVE mini receiver. I am not sure about the wiring. The old polypipe programmer use 2 AA batteries. HIVE use live wiring (N, L and Ground). Here everything is clear. Polypipe has dual pairing: C1 - Brown...