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refilling a Worcester 19/24 cbi

View the thread, titled "refilling a Worcester 19/24 cbi" which is posted in UK Plumbers Forums on UK Plumbers Forums.

hi all I plan on replacing a radiator and will need to top the water/pressure back up after, the boiler looks very old it’s a Worcester 19/24 cbi it has no pressure guage anywhere I can see ! It has an external pump and a mid position actuator fitted. Hope someone can help as I don’t want to take off radiator before I know I can refill it !!
 
The boiler you have was mainly used on open vent systems, look in loft see if you have a small water tank ! if system is sealed you will have a filling connection with pressure gauge look in cylinder cupboard
 
ok Thanks had a look in the loft there is a water tank ! Does that mean the system fill itself , And will it keep filling when I take off the radiator??
 
You should have 2 tanks, 1 x large water for hot water tank, 1 x small tank for topping up heating, if fitted isolate supply to the small tank or just tie up the ball valve, will also give you the chance to clean out this tank, when ready to refill don't forget to add inhibitor to system.
 

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