i have 1 radiator that is not getting hot in certain places,is it black sludge as i have bleed radiator?i think i will remove radiator and try and flush with a garden hose,whats the best way to isolate the 1 rad just turn rad valves off?also when adding inhibitor to a combi boiler how do or where do you put the inhibitor,thanks anyone,jointy.
one rad not getting hot in places
- Thread starter jointy
- Start date
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Try turning off all the other rads first to see if it gets hot, if it doesn't then turn off both valves making a note how many turns it takes to turn off the locksheild valve.Remove the radiator and flush it out with a garden hose.
Make sure you put down plenty of old sheets so you don't get the sludge on your floors.
Once you have flushed and re-fitted depending on rad you can remove the vent plug where you bleed it from and add the inhibitor through that either by a filling kit from screwfix or knock up something yourself with a funnel,hose,piece of copper pipe and an isolation valve
Make sure you put down plenty of old sheets so you don't get the sludge on your floors.
Once you have flushed and re-fitted depending on rad you can remove the vent plug where you bleed it from and add the inhibitor through that either by a filling kit from screwfix or knock up something yourself with a funnel,hose,piece of copper pipe and an isolation valve
Jointy, you can use anything that will get it in there, short piece of hose with a funnel is the easiest. Or as armo said you can screw a isolation valve into the rad and attach a piece of copper with a bend.
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The one i made was with a piece of copper pipe and hose pipe both approximately 6" long and a small funnel with a spout slightly smaller than the inside diameter of the hose pipe.
Push the funnel into one end of the hose pipe and a piece of 15mm copper pipe into the other end of the hose pipe then attach a 15mm compression fitting onto the copper pipe. You will then be able to screw the fitting where the vent plug would usually go as it has the same thread.
As i said in the previous post though it does not work on all rads.
Push the funnel into one end of the hose pipe and a piece of 15mm copper pipe into the other end of the hose pipe then attach a 15mm compression fitting onto the copper pipe. You will then be able to screw the fitting where the vent plug would usually go as it has the same thread.
As i said in the previous post though it does not work on all rads.
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