Emptying rads

[AndyBill]

Hi,
as i am renovating my house and have all the carpets and furniture out the way i thought id have a play with the heating system.
its a combi boiler (about 7/8 years old) with 6 or 8mm micro bore pipework to rads, i was thinking of removing all the rads and emptying/flushing them through with a house pipe to remove any sludge that may be in them.

i thought draining the system might block up the micro bore if there is any sludge so therefore i ll take the rads off.

then i was going to put them back, re-fill and fire some fernox super concentrate in for good measure.

Do you think this would help the efficiency/performance of my heating system ?

i might put a water softener in too.

cheers
andy b

 

[Burnerman]

Its a good move I think - so long as the microbore pipework is clear too.
6mm stuff?
John

 

[AndyBill]

thanks burnerman,

im quite sure that the pipework is clear as all the rads get hot

could i put fernox in when:

1 rad is empty
2 rad is filling
3 rad is full ?

cheers
andy b

 

[Burnerman]

Leave one convenient radiator empty, and inject the inhibitor into that one through the rad bleed valve. If you need to, have one of the bottom connections loose so the air can be displaced.
John

 

[AndyBill]

thanks john