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Mend Worcester 240 Boiler Water Loop

boiler dumps water worcester bosch 240?

my boiler dumps water when the filler loop is compleatly closed ,then there is no pressure i then have to open the valve and refill the boiler to get it running againl

L HICKEY
March 2009
renew blowoff valve

paul
April 2009
if the pressure goes to zero and you have to refil it, it won't be a fractured plate heat exchanger as this would cause it be constantly on 3bar. your expansion vessel has failed (big red cylinder shaped thing at front of boiler) this will need recharging to 1bar using a foot pump (be sure to do this with the safety valve open) it may have failed completely and require replacing. try recharging first though as it will be cheaper. hope this helps!

andy gas man
March 2009
sounds like the heat exchanger plate has a fracture in it... take note if the pressure gauge increases over a period of time when hot water is taken from the system...

the fixerman
March 2009
when you say dumping water,is it going outside thro the safety valve?....

t
March 2009
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