Can anyone help me repressurise my boiler?

[Smallsteps88]

It’s an OFCH system. I only have heating going to the two radiators closest to the hot water tank/pipes etc. Hopefully the photos of the gauge have attached. The actual boiler is outside and all the pipe work inside. I’ve been Googling and none of the videos I’ve found have resembled the system I have. Is the little red knob what I need to turn to re-pressurise? Can anyone walk me through it please?

Photos

I’ve also found this which I think might be the full loop and perhaps is the correct valves I need to re-pressurise?

Photo

Fill* loop

Mine looks the same as yours. In my airing cupboard I have the black flip thingy, but if you look there should be two - mine are on pipes 90° to each other. I have a leak so am constant,y having to repressive the boiler - sometimes even daily. I flip both those black switches and you can hear the water rushing in. When the sound stops, usually somewhere between 1-2 (and it can jump suddenly so be prepared for that!) then I just flip both switches back over. I've found it doesn't matter in which order I flip them. There may be a tiny bit of water that spurts out when you flip one of them but don't let that alarm you! I'll try and take a photo of my pipes in a minute so you can see if yours is the same.

Oh, sorry, I only saw the thumbnail. You have the same as me so flip them both.

You'll be able to hear when it 'equlises'

Thank you so much! I’m out of the house now but will try once I get back!

Thank you @Whatwaswrongwiththatusername, that’s done the trick. I have heat!

I don't know if this is compulsory but when we have to "whoosh" the boiler dh then makes it his personal mission to run about the house checking all the radiators twice a day for two or three days. If anyone is upstairs he'll ask us to do it, but then won't believe us if we say "hot"....it's not specific enough apparently.

@LaurieSchafferIsAllBitterNow

I don't know if this is compulsory but when we have to "whoosh" the boiler dh then makes it his personal mission to run about the house checking all the radiators twice a day for two or three days. If anyone is upstairs he'll ask us to do it, but then won't believe us if we say "hot"....it's not specific enough apparently.

I’ll follow his example just to be sure!