Where abouts in the house was this flexible hose, in a cupboard near the bathroom by any chance.. Abit of a long shot but could that not actually be a filling loop as I find it strange anyone would remove a rad and fit a flexible hose in its place?
Ah yes, as I imagined I think. Don't go bothering swapping out the speedfit T's I can't see there is likely any problem there. A bit of systematic investigation is required. And don't assume things - that way lies wasted time and money. And you've already found something a bit odd - which looks like a bit of a DIY bodge to me, there ecould be more oddities.
First thing - at the moment there seems to be no flow in this loop. The heat you can feel on the pipe seems to me to just be conduction along that bit of pipe - that is why it stops at the speedfit T as it doesn't conduct much.
Open the valves on the flexi pipe as well as the rad, close down the rest of the rads and see if there is any circulation at all. If there is then it might just need balancing.
If not, then further investigation - it could be plumbed wrong in some way, there might be some sort of blockage in a pipe etc. - really I would say you need check the plumbing and see how it is all connected up. At the moment I'm not convinced these pipe actually are connected to the heating system necessarily
Right ok, should the plumber have picked up on all this before it got to this stage really? I will try closing the rads and balancing the rads if of course they don't do it when I'm at work tomorrow. If this sheds anymore light on the subject they said when they opened up the shut off valves they had really hot water coming through but I have not found this to be the case. So I think I've made assumptions based on my plumbers assumptions so I think they need to go back to the start.
Danplumb, I think the towel heater my have been what was being fed originally by these two pipes and they put this on the HW instead of CH so may be they did that to keep the CW loop?
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