I have Sentinel X800 in my combi heating system. Been in for about 1 month now. How long can I leave it before flushing out and refilling with inhibitor ? Simon.
Leaving sludge remover in system
Apr 08, 2011
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Information here may be outdated?
IIRC pretty much all instructions tell you to leave it in far less time than that although the X800 does not seem to specify a maximum time. I would change it now though.
The last Fernox I used said max 1 week IIRC.
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