Boiler wet part quesition....

[reneel]

Hello all

What's the best way to replace a "wet" part in a boiler? I have heard that closing the boiler isolation valves can be troublesome with leaks on re-opening. Is it best to drain down the whole primary circuit or is it best to close all radiators and drain just the pipework?

Thanks for your advice, all the best.

 

[Boilerman2]

Waders and an Umberella

 

[rojaca]

depends what the part is really. some parts you can get away wih just dropping the pressure of at a drain point on the blr and some parts meed draining- experience is the thing here.
ps I don't want to start another is it /isn't it debate. But my understanding of the gas safety regs is that any work on a gas appliance constitutes working on a gas fitting, regardless of whether you are only working on the water side or not.

 

[Boilerman2]

Uh-oh and a bullet proof vest!!

 

[bengasman]

...What's the best way to replace a "wet" part in a boiler?

Getting it done by a RGI.

 

[reneel]

I appreciate all of your replies

As it is just 1 single open point I will just drop boiler pressure and replace it. But if it was a pump head etc with more then I'd drain down more to below boiler level.