Hi all,

Can someone kindly jot down detailed steps to re-pressurise
a Worcester-Bosch 24i junior Boilder please?
Mine's down to less than half the required level shown by the red-arrow mark.

Also, what are the precautions to be taken so that this doesn't happen again?

Many thanks

S

shibu menon, January 2008

Can someone please tell me where is the best place to buy a replacement drop down lid for a worcester junior my mum pulled it instead of just pushing it and the little plastice bit on one side has broken off so only one side will stay on

Graham, January 2013

I would just like to say thanks to GKJ for the perfect instructions. My kids can have their bath now. Plumber who fitted my boiler was out on the lash so I couldn't ask him.

Lee Anderson, November 2009

Thanks for the advice above - worked a treat.

Grateful and warm, November 2009

for those worried about overpressure this is usually caused by leaving the filling loop open, just close the tap and the pressure will slowly drop over time. Ideally 2.25 bar is best but it will work fine even at 2.75+ but this is not recommended.

Frederick George, November 2008

Remove the plastic cover from the bottom of the boiler.

This answer applies if you find a plastic tube with a six sided white plastic nut beside it. Place the key (should be held on the cover you removed) in the tube and lock it (bit fiddly but you know it's locked if you can't pull it straight out again). Then turn the white plastic nut anti-clockwise and you should hear water flow. Fill to between 1 and 1.5 pressure and turn clockwise to turn off. When removing the key some water may dribble but that's ok.

Done!

gkj, October 2008

Depends if the water inlet is directly connected to the mains. IF it is, it is simply a matter of 'turning on' the inlet valve and presurising to 2-2.5bar.

You should not have a drop in presure over time unless you are bleeding the radiators. If you do, you have a leak somewhere and you need to find it.

***** make sure you cover the from control panel sufficiently with plastic before attempting to fill the boiler. *****

IF it is not directly connected to the mains.
1. You need to take off the cover
1.1. There are 2 screws at the top and two at the bottom of the unit to take out.
1.2. One at the top left (on top of the boiler) and top right as you are directly facing the boiler, and one on the bottom left (underneath) on a 45 degree angle and on the bottom right on a 45 degree angle. Both are phillips heads.
1.3. you then slide off the front cover of the boiler.

2. You will now have to drop down the front control panel.
2.1. Just above the control panel is a phillips head screw in the centre. Remove this screw and the panel will drop forward.
2.2 Cover the control panel with some plastic (so water ingress will not happen as you fill it up.
2.3. you will find on the right had side of the boiler an inlet pipe (black plastic with ridges for gripping)
3. You will now need to connect a garden hose (or similar) to the inlet pipe to fill the boiler.
3.1.Attach the garden hose to the inlet pipe and then push the pipe back towards the boiler and to the left, it should then 'pop' out about an inch.
3.2. have some one else turn on the hose.
3.3. the boiler should now start to pressurise up.
3.4. When the pressure is up to 2-2.5 bar push in the inlet pipe and turn to the right to lock it off again.
3.5 have someone else turn off the hose.
4. The boiler is now pressurised.
4.1 Wipe off any excess water and put back together in reverse order from above.
4.2. You may now have to bleed the radiators for any air taken in whilst filling up.

Hope this helps. I have had to do mine several times as I DIY my new new radiators in the house.

TimLalor, January 2008

You need to find the 'filling loop' - this is a flexible water pipe connector that connects your boiler to the water main. This pipe will have some sort of tap at one end - it may be hand, screwdriver or spanner operated - and you open the tap to fill the boiler with water. Add the water slowly until you get up to pressure. Regular drops in pressure mean that there is a slight leak somewhere in the system.

John, January 2008