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Thanks Bolshy & Mogget for your helpful posts! I think I'll go with the original plan - but I'll get a larger cold water tank as well so it's able to meet the total output requirements. That, coupled with the right mixer should do fine. Thanks again for your help :) Colin

Was really hoping someone could give advice on whether or not my initial proposal would work, and if it needs changing in any way? Hope someone can help - I appreciate the advice I've received so far, but no direct response to the initial query. Thanks in advance Colin

Hi Anyone got any specific advice they could give regards: Sizing the hot water cylinder/system for a power shower? for example -How big a hot water cylinder? -Is the cold tank big enough? -Is a 1.5/2bar pump enough? Thanks Colin

Hi Have seen thermal stores mentioned on here but wasn't overly keen - perhaps because I found some posts where they weren't considered favourably. The term sludge bucket seemed to have been mentioned a few times separately. I don't know enough about them personally to form an opinion; I was...

Thanks for the replies Mogget. I think I'll change the tank - I assume I'll take a hit on a longer recovery time, but hopefully can ensure there's enough hot water when we need it by changing the HW timing. Can anyone provide their feedback or suggestions regarding what size of tank to go...

Hi, I'm looking to add a mixer shower in our bathroom to supplement the electric shower in the en-suite. Household of 4 with two children 9 & 12. A flow of anywhere from 6-10 litres/minute blended seems like it would provide a nice shower - with the opportunity to have a higher temperature...

Right! Checked the wire again with everything live and there's no current - it's dead. So I've broken the joint and made it safe and replaced it with a crimp to the blue wire into the WC and everything's working fine. Thanks to everyone who posted comments and suggestsions to the thread -...

Funny how the cable issue was the last one I wanted to consider as creating the problem - but then the last thing you check before fixing something is always the thing that needed fixing! :lol: I'll check the black/red cable this evening and if all's well isolate the red cable and patch up...

Hi, Well since our visitors left this afternoon I did some exploration in the walls in the utlity room. I traced the wires back from the programmer end and found the crimped joints. One wire had red/black which was routed to 9400c/T1 and 9400c/N respectively via the brown/blue of a T&E...

Appears the electrician didn't pull the cables up to the ceiling space as the only wires I found were continuous and I think I know what they were for. The cables I could see were for the cooker (next to the programmer) and a lighting loop that I traced to a junction box on top of an adjacent...

Thanks for the advice. Haven't done anything these last couple of days, if I get opportunity I'll have a look under the carpet upstairs - hopefully the crimps are there. Colin

Hi! Thanks for the run down of options matt1e, and to D_Hailsham for the view on pricing. I think the easiest and most desirable solutions in order of preference will be: Option 7 - The repair I have reasonable confidence that because two of the three cores at the airing cupboard are...

Thanks again for your patience and assistance! I now know far more about the workings of my central heating and Y plan wiring layouts than I would have thought possible (ha ha or maybe even thought necessary!). Colin

Hi 1. Continuity testing to check which cable is which. I tested the two neutrals at the 9400c for continuity. One of them goes to WC/T2. The other tested good for continuity with a neutral from the the fused switch. I then used the neutral wire from 9400c/N which goes to WC/T2 to check...

Hi Off to do the checks when the rads & hot water are satisfied... You asked why the two diagrams for the ST1250 at the bottom right of the picture were different - the left diagram is a sticker that is on the back of the ST1250 programmer which I presume shows the way it uses the outputs...

Hi again D_Hailsham :) Just a copy/paste of what I think are the most relevant questions / comments this time to cut down on the post length! Are you 100% certain that the blue wire connected to WC/T6 connects back to Programmer/T1 (HW OFF)? No I'm not sure - ties in with your comment...

Hi, thanks for coming back - in case I've not said it already I really appreciate the comments and suggestions that you and others are giving me :D First an apology - I'll try to be clearer when describing the wires whether I'm refering to connecting something at the wiring centre (WC)...

Hi, Checking back through the thread and don't think I responded to this. I should have mentioned this - I removed the link between live and terminal one as a chap from Honeywell explained it wasn't necessary to make the bridge as the 9400c provides 240v out on this terminal - the ST1250...