How to raise pressure in my samsung 6 gen joule heating system

[PeterPan]

Hi Guys,
my pressure gauge showing nearly (if not) 0 Bar. Heating downstairs works for now, upstairs 2 out of 5 rads not.
I'm trying to get a plumber in but it will take few days, have kids home and afraid to end up with no heat. I believe all what it needs is get pressure back to 1 bar but don't know how / not sure what valve should i open. The flow is around 19 - 20.
Have Samsung 6 gen joule heating system, please see attached pics.
Thanks,
Peter

 

[ShaunCorbs]

Picture one you see the braided flex bottom right two black valves open one then open the other one slowly until you hear water filling 1-1.2 bar

 

[PeterPan]

Picture one you see the braided flex bottom right two black valves open one then open the other one slowly until you hear water filling 1-1.2 bar

Thank you, do you mean open black valve (1) and then slowly turn the screw in valve (2) ? Heating's down already

 

[Gasmk1]

Open valve 1 screw looks open already (open when slot in line with pipe work) when pressure at 1 to 1.5 then should be ok make sure you turn both valves off. You may need to bleed some rads if there is air in them if you do check pressure and top up if necessary

 

[PeterPan]

Open valve 1 screw looks open already (open when slot in line with pipe work) when pressure at 1 to 1.5 then should be ok make sure you turn both valves off. You may need to bleed some rads if there is air in them if you do check pressure and top up if necessary

Thank you guys, heat's back on. There's another screw 3 right behind the black valve (it was closed ). All what i did was to open only the black valve slowly and the pressure went up, i stopped at 1.2 and turn the black valve off. Not sure what the screw number 2 at the bottom of the flex does, cause i was able to turn it left and also to right few times. Also i did not see the screw 3 when i opened black valve, but now wondering.. it should not allow to rise the pressure if that screw was closed??

 

[ShaunCorbs]

3 is a port for a pressure guage so don’t need to mess with that one