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Best and cheapest don't go together

The orientation of the expansion vessels Water Connection should be downwards to avoid risk of sediment ingress or other debris from the system. Some provision for the prevention of air ingress into the vessel must also be made as this will degrade the vessel very quickly...

That unit is for hot water Heating expansion units are red It's also fitted upside down the air gap should be at the top

What is the temperature of the hot water it should be approximately 60deg C

That's about the most sensible thing you have posted

It amazes me that anyone would even consider wasting time replying to a wind up.

Did you shut the valves off fully after topping up the pressure.

Oh dear leak sealer will block the main heat exchanger and plate heat exchanger you need to try and flush it out asap How many radiators are on the system

Has it had a proper service in the last 4 years has the expansion vessel air pressure been checked.

Obviously your not

If you e mail gas safe with your details for un vented they will add it to your card and add it to gas safe register.

Copper Mate

Both parts have fibre washers you can order them from a spares specialist

We are all waiting with baited breath to see what conclusion you come to Tony

Push the override on the programmer to switch it on

The programmer to the right of the boiler needs to be on for it to work

And if you don't pay you pay

Have you checked for power to fan is fan working

If you pull the locking ring out of the fitting then you will be able to pull the insert out Are the speedfit valves suitable for hot water as not all are

Yes it is the same pump that is very close to the trade price that I pay Pumps should be fitted at the base of the hot water cylinder to prevent air being drawn into the pump on the hot suction side The cold supply should connect to the cold water tank on the side furthest from the ball valve to...