Need to depressurise Greenstar 30cdi with no cold water inlet?

[The Gribble]

Hi all,

I'm trying to repressurise my Worcester greenstar 30cdi boiler after bleeding the radiators and I'm having trouble. Reading up they should either have a key and valve, a keyless filling lever or a braided hose to connect to the cold water inlet; I haven't got a key or anywhere to put one, I haven't got the lever and not only is there no hose but the boiler doesn't seem to have a cold water inlet pipe either. From what I can work out the fourth hole should have the whatever it is attached and now I'm stuck.

Anyone got any ideas?

 

[hertsboilers]

This is a system boiler. Likely you will have a filling loop in the airing cupboard where the hot water cylinder is.

 

[The Gribble]

Ah, thanks! I'll poke around the tank and see if I can find anything.