FLUSH and CLEANSER??? & new question & another

[kayla99]

Asked for some help last night about installing a radiator, and with some help have succeded. So many thanks to the two who posted some advice.
Next question is, now that the radiators are installed do we need to flush the system [combi] and does it need a cleanser adding?
If we do have to do either of this, can someone please advise me how.
Many thanks
Kath

 

[kevplumb]

Next question is, now that the radiators are installed do we need to flush the system [combi] and does it need a cleanser adding?

yes

try this

 

[kayla99]

Thanks for the prompt reply, if you're still around is it easy to do?
Do we need to flush it first?
Absolute novices!!
Thanks

 

[kevplumb]

yes and yes

 

[kayla99]

Sorry, but how do i flush it??

 

[bster]

did you do any soldering on the new radiator?
- if not a simple draindown through the new radiator will suffice, then lock the rad off (close both valves on radiator ) fill system, fill radiator with inhibitor, double check for leaks on new rad, open rad valves on new rad, bleed rad of air, re pressurise system, put your 'filled with inhibitor' sticker on the boiler