I have added 2 new radiators to my CH system and they are both lukewarm at best. One is downstairs (using 15mm plastic pipe), the other upstairs (on 10mm copper)
Both have new valves, are free of air, and run clear when you drain them so I don't think there is any sediment in them.
The "in" pipes to both rads are piping hot, but beyond the valve, it is lukewarm, and the "out" pipe is often cold to the touch.
Anyone got any ideas why this is happening, all other rads on system are burning nicely so I am at a loss. Have I overloaded the boiler ? The manual says I am well within the btu's allowed, could the pump be dodgy ? I am running at a working pressure of 2.5mb at present.
All advice gratefully received
Both have new valves, are free of air, and run clear when you drain them so I don't think there is any sediment in them.
The "in" pipes to both rads are piping hot, but beyond the valve, it is lukewarm, and the "out" pipe is often cold to the touch.
Anyone got any ideas why this is happening, all other rads on system are burning nicely so I am at a loss. Have I overloaded the boiler ? The manual says I am well within the btu's allowed, could the pump be dodgy ? I am running at a working pressure of 2.5mb at present.
All advice gratefully received