Old boiler+rads out-new combi & rads in-powerflush?

[hitchiner]

Hi,

Great site!! Hope you can help!

Our old system is coming out - boiler = 8yrs old and rads = 30yrs old. Never had a problem.

New Combi going in with new rads around the whole house.

Been told a powerflush is needed by builder or he wont be held responsible!

Q. Should this be done whilst the old system is in? (Just to clean out copper pipes I guess??)
Q. Builder cleaned out system 2 weeks back and got some black sludge out and heating system is running smooth - is there any need in that case?
Q. A friend said he can put some chemical in and let it roll through system to clean it out - is this the same as a powerflush or pointless?

Any ideas would be useful - it seems the money my dad may spend on a powerflush be pointless and could go towards buying a better boiler instead!

THANKS IN ADVANCE

AK

 

[Agile]

If all new rads are being fitted then its essential that they are treated with a cleanser like X300. But it does not have to be powerflushed unless the old pipework is very dirty indeed.

However the mere fact that you are dealing with a "builder" does sound very dodgey.

Your system should be fitted by a CORGI registered installer who fills in the appropriate forms.

Beware of builders!

Tony

 

[hitchiner]

The builder said he was going to lay down some pipework under ground upto where the new boiler is going to be setup.

I am worried as I hope he does fit the gas pipe properly underground (under the kitchen floor). He said he was going to get a corgi engineer to do the final install. Connect pipes.

I hope he knows on copper pipes as well. Something to do with 22mm instead of 16mm - I have no idea!

 

[Agile]

Dont let anyone touch the boiler or any gas unless you have seen their CORGI photo card.

Tony

 

[hitchiner]

OKAY - I'LL LET THE BUILDER KNOW HE SHOULDN'T DISCONNECT THE GAS AND REFIT PIPES

I'VE BEEN QUOTED WELL OVER £1000 TO REMOVE OLD BOILER AND INSTALL NEW COMBI

BUILDER IS ASKING FOR HALF THAT...

Can you advise on what paperwork I need to get signed once it's all done???

This is all getting costly now :<

 

[JohnD]

BUILDER IS ASKING FOR HALF THAT...

suspiciously cheap....

 

[hitchiner]

I think he's only going to lay down the pipes in the ground and then get the corgi engineer to connect all the pipes - I hope!!

Is there anything he should put on the pipes once they are under the kitchen floor. Any kind of sealent, or any special kind of cement??