2007-01-19 04:57:35 · 3 answers · asked by alexis h 1 in Home & Garden ➔ Maintenance & Repairs
Do you mean maxi combi boilers, i have those, so i would think so, but remember to put the pressure back up on your boiler as it would have gone down with you bleeding the radiators.
2007-01-19 05:07:02 · answer #1 · answered by sky 4 · 0⤊ 0⤋
if your radiators require bleeding they will contain air, this will mean they will be cold at the top not the bottom. when they are cold at the bottom it means that the circulation is not very good. this can be caused by a few things. depending on how old the system is and if the boiler was correctly installed or not, it may have a build up of sludge in the system. this sludge is caused when no corrosion preventer has been added to the system and the radiators are corroding from the inside. the best treatment is flushing with a high pressure powerflush machine. depending how bad the build up is an acid clean should be done at the same time and then a corrosion inhibitor added. before you consider that drain a little bit of water from a drain point in the system, if it comes out and looks like crude oil the system needs cleaning. its an expensive option but it will increase the efficiency of the entire system, save you having to replace radiators in a few years and protect your boiler from some failures that are caused by dirty systems
2007-01-19 20:10:04 · answer #2 · answered by bumbersquat 2 · 0⤊ 0⤋
i had the same problem as you only yesterday, i had to call guy out to fix them,he said it was a faulty valve,and that is why they were cold at bottom,hope you get it sorted soon.
2007-01-19 05:10:18 · answer #3 · answered by LYNDA M 5 · 0⤊ 0⤋