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D'oh I should have thought of that :oops: :oops: Will look at doing it when the weather improves a bit

Thanks spraggo I've spoken to my father and discussed fitting an auto-vent in the airing cupboard. When partially draining the system to fit the new vent, will the pump itself need to be bled from the big screw in the centre?

Thanks once again spraggo 8) The current vent is a Delcop 854-15, I believe it is fitted to a 15mm tail (is that the correct terminology?). Here's the best picture I took of it: Is it simply a case of de-soldering the vent and soldering a new auto-vent on top of the pipe? Would...

Sorry spraggo, I forgot to mention I just googled aerjec on the internet and got the diagram from a PDF file. I have no idea if the one installed in my parents' airing cupboard is a real aerjec or a knock-off. It has no identifying marks or writing on it that I could see (and it's tucked...

The house was built by David Wilson homes in the late 90's. I don't know if they commonly used these things in their heating system installations? :?

Hi I found a diagram, do you think my parents' ch system corresponds with system 2 in the diagram? Do you think the aerjec will be of much concern? The system had not been really any trouble until recently. Do you think the sludge and murky water may be a sign of 'pumping over'...

I forgot to say that the pump is a new one that was replaced at the same time as the powerflush was done. I don't know why he installed it towards the tank, as I remember the old one faced outwards.

Hi spraggo If you mean the pipe from the front of the three-way valve, that just goes down into the floor, I have no idea where it goes to from there, perhaps the boiler? Two pipes come from the loft and join together in a large connection, I think the RGI called it an air seperator. The...

Hi The three-way valve is directly above the pump, I don't think there is a bypass. Can you tell from these pictures? I moved the lever on the valve all the way to the left just before I took the photos, it was originally about a third of the way along from the left. Does it...

Hi By vent pipe, do you mean the one that comes in via the top? That stops well above the water level, here is a better picture: Thanks for looking

Hello everyone My parents have a wall-hung Ideal Classic RS250 boiler as part of an open vented system. For quite few months it has been making 'flushing' and 'gurgling' noises. The boiler downstairs in a utility room, hung on an external wall with a horizontal flue passing through the...