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I quite like this StreetView follow-up service you provide :)

Maybe TRV's on the first radiator would change the behaviour of those on the farther rads? I tend to like those old big radiators :) Was it a steam-based one?

Ok, got it, thanks. I was being overly paranoid, thinking about scenarios when the HW valve is stuck or closed for some reason and the boiler pumping hot water nevertheless, for some reason. Which brings me to another question (sorry, if I ask too many, just ignore me :) ): do TRVs for...

But in this way you only relief the CH, I think. What if the CH valve is shut and you need to relief the HW? Or am I missing something? Another question, sorry (I'm learning a lot:): what are the names of the radiator valves in the last picture? Is the one on the right a TRV? What's the name of...

Great, this thread's been very helpful, thank you to everyone. Another thing I find strange is that I don't see a relief (automatic bypass) valve in the third picture. I understand it should link the two pipes attached to the boiler in that picture before the tee. Am I right?

Yes, this makes sense. I measured the outer diameter of the pipes feeding the radiator in pic above. It is 8mm, I think. I don't like that. I have a question: would micro-bore imply a two-pipe CH, or can you also find one-pipe micro-bore systems? I cannot figure out how the latter would be...

Another thing I forgot to tell, wrt to the boiler pictures in the first post. I tested the system with HW and CH both on, and all rads hot: both pipes connected to the right of the boiler are definitely hot, while both pipes on its left are definitely cold (possibly, the bottom-left pipe is even...

I also attach a picture of a radiator, maybe this can help wrt the 2-pipe vs 1-pipe CH question: Thanks in advance! Cheers

Hi, I'm having problems understanding the exact configuration of the CH/HW piping in my house. In particular, I have to understand where and how to place piping for additional radiators at the upper floor. My configuration is the classical one: loft cistern, indirect cylinder on the upper...

Thank you for replying. Sorry, that's 40mm waste pipe diameter. I also amended my post. Scottish Regs seem to embrace English ones in this respect, and I know about the 4m meter. That's why I was mentioning to install aav valves: do you think this would eliminate the 4m limit? Reading Approved...

I recently got ground floor piping extended to have drain (40mm leading to the stack as in the figure), hot and cold in a first floor room. Only the pipes are there, but I'd like to install a sink and a washing machine as from the (quite schematic) diagram. Note that the washing machine will...