Changing a vented hot water system

[audi321]

Hi all. I have a flat where the hot water is a strange vented type, whereas the header tank is attached to the copper tank directly below it.

In view of this, I was thinking of changing it to an unvented system. Is there anything preventing me doing this?

There's good cold water pressure and the only way to heat the water is an emersion heater.

Any ideas/tips?

Thanks

[Pheo]

Needs a qualified plumber. And a route for the pressure relief in copper to outside, near to ground floor, or through a Hepvo trap into soil.

[Gingerbread Man]

Ideally a 22mm feed for flow. Need a qualified bloke to install it. A route for the discharge as mentioned. Crack on.

Oh and 'immersion'.

[audi321]

Why do I need a qualified plumber?

I've got a cold in and a hot out and an immersion heater. Surely that's a simple install?

I get the hot water expansion part is the risky bit, but don't these unvented tanks have some kind of 'built in' pressure relief solution?

[hyphen]

audi321 said:

Why do I need a qualified plumber?

I've got a cold in and a hot out and an immersion heater. Surely that's a simple install?

I get the hot water expansion part is the risky bit, but don't these unvented tanks have some kind of 'built in' pressure relief solution?

Not any qualified plumber, a qualified plumber that is additionally certified in the unvented part (G3 Unvented Qualification iirc).

They have this thing about only 'competent persons' being allowed to install things that can blow up...

[jason61c]

i'd check your pressure and flow. Make sure its upto scratch.

[anonymous-user]

hyphen said:

audi321 said:

Why do I need a qualified plumber?

I've got a cold in and a hot out and an immersion heater. Surely that's a simple install?

I get the hot water expansion part is the risky bit, but don't these unvented tanks have some kind of 'built in' pressure relief solution?

Not any qualified plumber, a qualified plumber that is additionally certified in the unvented part (G3 Unvented Qualification iirc).

They have this thing about only 'competent persons' being allowed to install things that can blow up...

You must be G3 quallified its the law. Its saves you from..well..yourself.

Anyway just replace it with the same unit, hastle free. And because its vented you can do it!