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How do I raise the pressure on a worcester Junior 28i Boiler?

I am renting a flat with a Worcester Junior 28I boiler and recently the pressure has dropped below 1 and will not rise above 1 (bar) and the red oval warning light comes on flashing fast. I can get hot water by holding the warning light/button for about 5 seconds until it switches off, switching the boiler onto "on", waiting for the pressure to reach 1 bar and then using the hot water. After about 15 minutes of the boiler being on I can turn it off on the control pannel and if continuous use is being made of the hot water, I can get hot water without the warning light coming back on.

I have been told that I need to repressurise the boiler and have read other internet posts on this. They all say that I need to turn the stop tap attached to the metal hose to run cold water into the boiler. I turned the only tap (red in colour) that doesn't require some sort of metal key (which I dont have) (the tap is also attached to a metal weave flexible tube encased in clear plastic) and the only result was a very fast depressurisation and a hissing noise like air escaping. This red tap is located on the upper left hand side of the boiler. I can also find a black switch which moves 180 degrees through 3 different settings marked I II and III . It is set on III and has always been. Turning it to II or I results in a slow drop in pressure or the boiler warning light flashing fast. I cant find any other hand movable buttons or taps. The only visible taps are 5 metal taps arrayed along the front underside of the boiler marked with (left to right) 4 vertical lines with a circle and an arrow pointing down, a water tap with an arrow pointing down, a gas tap, a water tap with an arrow pointing up, and 4 vertical lines with a circle marked with an arrow pointing up.

Can somebody tell me in terms of left/right/up/down/red tap/black button/any other descriptive detail not involving terms such as "stop tap" which I don't understand, how to repressurise my boiler?

many thanks in advance for anybody who can help.

Tim Martinek
December 2007

Worcester Heating, Home Heating Systems Pressure Worcester Boiler Flat

Problem solved - by the plumber.

apparently it needs a piece of connecting pipe and a key (Thanks Ryan)

literature for the non condensing worcester junior 28i boiler might be found here:

http://www.worcester-bosch.co.uk/index.php?fuseaction=literature.detail&con_id=5052

cheers

Tim
December 2007

Thanks for your answer Ryan, I think the tube with the metal weave and plastic sheath might be the integral filling loop you mentioned. This pipe (flexible tube) is already attached between the red safety tape which is in turn attached to a copper pipe with a half inch (outside) diameter which disappears off into the wall, and the other end of the flexible metal weave and plastic tube is attached to the back of the pump on the right hand side of the boiler. There doesn't seem to be a filling key attached to the trim on the underside of the boiler although there is a place for the key on the trim.

Any other suggestions?

cheers

Tim
December 2007

If there is definately no chrome filling loop on the pipework beneath (or near) the boiler then you will probably need the white plastic filling key (possibly located in the bottom white panel beneath the boiler). to repressurise the boiler using the integral filling loop. This key is only used for worcester boilers and it may be an idea to see if the landlord has it if you cannot find it.
The red valve you turned was the pressure relief valve which is there as a safety escape for system water if anything goes wrong. The switch you found was for the pump speed and this should be left on III (3)

Ryan
December 2007