do i use pre commissioning cleaner?

[john1]

thanks to info received on previous threads im having repiping done and new rads to bad system design.
if keeping old boiler do i still need to use a pre commissioning cleaner before adding a protector or will just a system refill/drain cold and hot do
with a protector added.
thanks for any info received in advance.

 

[Puddle]

Yes,if you have had lot of pipework done you should use a commissioning cleaner,it helps flush out any acid flux left in pipework ,then flush through and add inhibitor/protector
A clean system is a system