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Hi, Have a look at this http://www.uponorhousingsolutions.co.uk/literature/LiteratureDownloads/2_Systems/01%20-%2015mm%20&%2016mm%20Install%20Guide%20-%20Domestic%20Systems.pdf We have used this system for about 8 years and it works brilliantly. The system 12 from Uponor is very...

Hi Ian, I have to agree with bab and bengasman and strongly disagree with Neal. Saying all bathroom suites are the same is like saying all cars are the same, they "all" have 4 wheels and engine. It's not only how easy they are to fit, but also durability and access to spare parts later...

Have you checked that the cold water is fed into the mixer on the correct side, i.e. the right side? If not, change it and the mixer will work.

I prefer Unipipe, (for a wet system), good pipes that also stay in shape when you bend them. I use them as well in central heating and hot and cold water installations. Thermostats how ever I tend to stick to honeywell. For a good fitter in your area, call the manufacturer, they'll have...

I find the hans grohe the best, unless you have gravity system. Also, both grohe and hans grohe keep replacement cartridges for at least 15 years after they stop making them.

I would recommend the Viessman. If you get an engineer that is registered with them you will automatically get a 5 year warranty on parts and labour, and a 10 year guarantee on the heat exchanger. In mainland Europe they have been among the most dependable for decades. As the aftersales service...

Most 2-way TRV's are supposed to "sense" which way the flow is. But some of the cheaper versions don't handle this very well and start banging when they start to close. Better TRV's, (like the new Danfoss) have a manual setting that works much better. If you have the Danfoss one, you can...

Hi, You have wired it correctly. It seems that the 3-way valve is not working properly. When the hot water is not calling for heat there is no direct live to the boiler. The 3-way valve should recognise this and connect internally the live to the orange (pos 8). This is not happening...