how do l recommision a drained down direct 210L unvented tribune waterheater cylinder

[peterpeter]

Hi

l just bought an empty flat, where the water was turned off and the water heater cylinder was drained down and the electric turned off

too ive turned the electric on but when l turned the water on the direct unvented water heater ( a tribune range he ) does not fill then the water comes out of the overflow ( tundish ) until l turn the water off at the main. as soon as l turn the water off /the water supply to the taps and shower and toilet stop too/ hence l think the cylinder isn't filling !

is there anything that l should be doing once the water has been turned off and the system drained please, so l can refill the cylinder safely/ all the taps around the flat work ok when the water is turned on l havn't tried to switch the 2 immersions on at all l need help please to get the system running safely please /re commisioning a drained down system

[geoff]

In message , peterpeter writes

You're posting from diybanter - get a man in

[GB]

Do you see the pressure relief valve? Why is it open? Unless you know the answer to this, I suggest you ponder the following:

You can do an awful lot of damage with a pressurised HW cylinder. Your one contains over a fifth of a ton of potentially boiling (superheated!) water. That's obviously potentially lethal. Qualified plumbers need special certification to be allowed to play with these.

So, as geoff says, get a man in.

[John Rumm]

I replied to this the first time you posted it yesterday...

you need to work out which valve is defective and why, and then replace it.