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Yes, Glasgow is typically considered a hard water area. As regards a filter, Harry wrote: “It is a requirement, rather than an option” Gas Safe guy didn’t mention it, the 2 British Gas services of the Baxi boiler didn’t mention it. One of the power-flush plumbers did say he’d add a filter...

Well, there was no filter before and I didn’t ask for one. They quoted for supplying and installing (including relocating) the Baxi 430 combi boiler and fitting the new TRVs, and decommissioning old boiler. That’s what they did. Probably including the flow/return mistake.

Thanks. I’m actually active on helping people on a few IT forums, and it’s exactly the same - if I could see their screen for 10 minutes the problem would be often teadily identified. But of course they describe the inputs and outputs they get from what is effectively a black box to them, and...

Yes, this seems to my conclusion too. Here’s my logic: The left most pipe in the Baxi 430 Combi right now is the CH Flow, both from the product documentation and simple physical check - when it starts up that pipe gets hot first. That leftmost pipe was also the leftmost pipe when the Volkera...

That’s the before picture, the previous Volkera Compact 24 Boiler. All 6 pipes went straight down vertically under the floor. All were cut above floor level and rerouted to the new boiler. I’ve fotos of the “after” so I should be able to map those 6 pipes to the current connections on the new...

I’m not questioning the plumbing aspect. In an earlier post, someone else advised me to go to local plumbers merchant, get their recommendation. Seemed good advice. That’s precisely what I did. That recommended guy has written “as you know a flush might help the situation”, confirming what he...

No, in fairness he meant roughly same price as power flush. He’d already dismissed the importance of flow/return possibly being wrong way around. Unfortunately I just cannot do it myself. I’m partially sighted. I can just about see well enough , in good light, to get a spanner around the lock...

Thank you. Yes in all cases lockshiekd is at the bottom. And in most (5/6) cases the TRV is at the top.and there is differing levels of OK-ness , or otherwise, across those 5. The one with both at bottom works best. I will double check all of this later. Of course can’t know with...

This is what I assumed. And that “gets hot first” connection is consistently at the lockshield. And without being able to say 100%, I think it was always so. Pre Baxi too.

I hoped a Gas Safe registered installer, also on the approved list from Baxi , would be better. They actually were very tidy, and took old boiler away. They didn’t go to the pub, but they had a train to catch. The 3:15 from Glasgow Central. Left my place 2:35 or so.

It’s a seek thermal attachment to my old iPhone. Seek Thermal Compact XR Extended Range Thermal Imaging Camera with Lightning Connector and Protective Waterproof Case for Apple iOS Devices - Black Cost me 180 quid from Amazon in 2017. I lost track of it, and only found it in a box of cables a...

Sorry, practically, how to know? 95% of the piping is under tbe floor. Is that something the customer should be checking after a new boiler was installed and new TRVs fitted to all radiators? Really? Remember around 8 different plumbers/ gas/installers have looked at it over last 3 years or so...

Ok, so if I am understanding correctly, there’s now a new theory, it’s just setup wrong? The old boiler certainly worked the radiators better, but as I didn’t live there I can’t really quantify this claim. And it was years ago. The boiler was relocated when the Baxi was installed, about 60cm...

That’s the actual radiator. Most (4 in total) of the others are the same, lock shield bottom left , TRV top right. One has it diagonally swapped, lock shield bottom right , TRV top left. That’s the one in kitchen, physically closes to boiler, also doesn’t work good at all One has both at...

Can you be more specific on what you mean by “wrong”. All, or almost all, are connected the same way ?

That thermal foto was taken when TRV on one radiator, that one, was the only one open. Every other radiator was stone cold.

Lock shield is bottom left. TRV is top right. That’s been same for 20 years.

Old rectangular style. Above is thermal photo I took last night. I’ll post normal pic when back at home. Isolate is not meant in any detailed / technical sense, meant more that one radiator is with “fully open TRV” and the rest are off and checked to be so. I also tried turning lock shield on...

I guess both can be true at same time, it’s a big issue but also abused a bit.

Just looking at other threads, you get so many different views. Someone with similar symptoms as mine got this: “Claiming sludge in a customers radiator and quoting for powerflushing is the biggest racket going on in the heating industry (in fact powerflushing could do more harm than good).”...