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darrenangel
I have an open vented heating system. The rads were getting warm, but some more than others. So I decided to give it a chemical flush using Fernox F3 ( concentrate cleaner ). I drained the circuit and refilled with fresh water(as recommended). Applied the F3, now one of the rads will not warm up at all ( it did before I drained and refilled the system).
Here's some background info. Most of the rads in the house are supplied from exposed pipework dropping down from the ceiling. A pain as they don't have drain cocks and so need draining by undoing the valve unions at each individual drop. In the extension the pipes drop down to supply one rad. There is a drain cock below this rad. Then they must go under ground(concrete floor) to the ajoining room then come up from ground level to the rad. This is the rad that won't warm up now. Is it possible that by draining down i've bought all the crap in the system down to block the pipework to this rad. Any help would be much appreciated.
Darren
Here's some background info. Most of the rads in the house are supplied from exposed pipework dropping down from the ceiling. A pain as they don't have drain cocks and so need draining by undoing the valve unions at each individual drop. In the extension the pipes drop down to supply one rad. There is a drain cock below this rad. Then they must go under ground(concrete floor) to the ajoining room then come up from ground level to the rad. This is the rad that won't warm up now. Is it possible that by draining down i've bought all the crap in the system down to block the pipework to this rad. Any help would be much appreciated.
Darren
