Struggling to repressurise my boiler and heating system

[cjhncl]

Hi folks - new here and looking for a bit of advice.

I've got a British Gas 532/i boiler which is struggling for pressure - around 0.5 bar.

Heating works fine through most of the house just struggles to get to the very top rooms.

I don't think any bleeding is necessary, and I cannot find a leak anywhere.

I know I need to repressurise it but can't for the life of me find the filler. There's no braided silver filler loop that YouTube is telling me I should find.

I've added some images below - wondering if anyone has any thoughts? Would be very appreciative!

 

[snowhead]

Read our guide to learn how to re-pressurise your Worcester Bosch boiler - British Gas

Your Worcester Bosch boiler isn’t working properly, or you don`t have hot water? You might need to re-pressurise the system with some easy to follow steps.

www.britishgas.co.uk

 

[Deleted member 120897]

There’s a tee with a black handle so I think could be that or under the boiler? Also, any reason why the case isn’t fitted properly?

 

[Gasmk1]

Could be in the cylinder cupboard,