run the pump/system without heating

16 Sep 2004
Reaction score
United Kingdom
I have added some central heating cleaner to the small tank in the loft to clean the system out before I drain and refil (and also add a couple of trv's). Is there any way I can run the system but without generating not really need the rads on yet but need to run the system for the cleaner to circulate.

Any ideas?
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I would think the cleaner works at its best when it is not, may not be very effective cold.
Agree with nstreet ;) suggest covering rads with old sheets, duvets whatever..then go out for the day,return and flush out.:cool:
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Also worth noting that this stuff is heavy and will just sit in the bottom of your header tank and not go either needs to be injected straight into a rad or into the feed pipe in the tank and then a few litres drained off the system to get it in.

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