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Refilling heating system after draining.
Posted: Sun Apr 20, 2008 9:31 am
by Robert Yule
Having drained the central heating system to replace a radiator, after following correct procedure,no water is going back into the system. Expansion cistern fills but nothing else.
Posted: Sun Apr 20, 2008 1:46 pm
by ALDA
FEED PIPE MIGHT BE BLOCKED WITH SLUDGE FROM TANK WHEN REFILLING SYSTEM OR THERE MIGHT BE AN AIRLOCK.
Posted: Sun Apr 20, 2008 7:33 pm
by htg engineer
Open a vent on a radiator - connect a sentinel dosing bottle and pressurise - or I have done this and it has worked - anti bacterial wipe for rad - place mouth over and blow, normally clears it if it's just air.
If it's a blockage - get a length of hose - in tank and push down the pipe feeding the heating system see if it'll clear.