Radiators. Why is it that the top partly are getting hot? And the bottom half are cool-cold. combi condensing boiler,Valiant eco-max, also hot marine...
And the bottom half are cool-cold.
combi condensing boiler,Valiant eco-max, also hot marine almost none exsistant unless it runs from tap at a trickle, which when running a tub can take up to 3/4 of an hour.
Answers: The system have sludge in it (and/or scale) have the system been cleaned as it should be for a foreign installation, it would not be this way, check the blue and white benchmark book, it will vote which system cleaner was used, and which inhibitor be used, the ph level of the hose down should be below 8, and the total dissolved solids should be within 10% of the thump water, (these can be tested by businesswoman, or if you are lucky enough to know a plumber who know how, they can do it), we always experiment and nuetralise water, regretfully, most companies do not. I can e-mail you a check sheet if you like.
It's probably an nouns lock. you need to drain the radiator to take the air lock out