Power flush and new rads

[Rybo_1]

Evening,

Been asked by my barber to fit him 5 new radiators downstairs and power flush his system. I've never had to do both on the same job. So I'm looking for advice on what to do first. I'm thinking of flushing the system first and then fitting radiators onto a clean system. Am I right?

 

[stevetheplumber]

i would do it the other way round most of the crud is in the rads

 

[steadyon]

I like Rybo-1's approach. While agreed most of the sludge is in the radiators, to fit the new ones then flush it would move any sludge remaining in the pipework through the new radiators. Shouldn't really matter but why take the risk?

Are there other radiators upstairs, and / or a boiler. Do these need to be flushed through to avoid old sludge being carried into the new radiators?

An alternative would be to remove the old radiators, cap the flow and return to all but the index radiator and bridge flow and return at the index. Then just flush the pipework.

 

[Rybo_1]

I was thinking of removing the radiators which are changing and linking them up but Im currently seeing that as a bit of waste of time. Yea there are rads upstairs and boiler.

 

[wetdrip]

I’d make up a dedicated set of radiator connecter bridge pipes which I’d connect to all radiator pipework then power flush, new rad fit thereafter to a 100% clean system.
Keep dedicated pipes stored at home and bring out every time I had to power flush for new rads etc.
You’d build up a few varied lengths of pipe; a handy collection of dedicated connector pipes for said jobs.

 

[wildcard]

Remove rads & run a hose from each valve until water runs clear,then fit new rads.You will know by the first 2 how bad the system is.I really don"t see the point in p/flushing rads which are going in the skip.

 

[R.Oak]

Remove radiators leaving old valves in place, connect each rads valves together using hose or plastic pipe, flush systems, remove hose and old valves and install new valves and radiators.

 

[tolly]

Why not change the rads first then just leave all the new rad valves on the new rads shut when you powerflush afterwards and not flush the new rads

 

[stevetheplumber]

why not change the rads first then just leave all the new rad valves on the new rads shut when you powerflush afterwards and not flush the new rads

with the valves shut you wont be flushing the pipework to those rads

 

[Rybo_1]

It wouldn't flush that run of pipework

 

[Rybo_1]

Ah you beat me to it stevetheplumber

 

[tolly]

oops, wasn't really thinking, been a long day. :disappointed:

 

[tolly]

For some reason I was just thinking of clearing sludge in the rads and wasn't thinking of the pipework