my boiler isn't working right i think its the air pressure in the small expansion tank its a worcester 9.24 electronic (very old) does anyone know what it should be as i haven't got a manual and cant find one on the net 
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help need some info
- Thread starter sstephen
- Start date
first things first fella what's the prob 
N
namsag
Simple kev its a 9.24 
as in you twit what the OP thinks is not pertinent
no the water pressure in the system is going high
you need to repressurise the expansion vessel
shrader valve as in car tyre on ex v
.8 to 1 bar with the boiler drained
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