Topping up vokera boiler

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Hey guys, I have been trying to work this out. I have a compact Vokere 29a gas boiler in my new home.but can't get heating going. Currently no pressure.

All tutorials tell me to turn two dials in order to put some.in but can't seem to find which two are connected. Iv included pictures. Any idea which two will do the trick?
 

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You’re looking for a braided hose, have a look under the boiler, above the boiler or in the airing cupboard if you have one.
 
Hey found one.but lacking any turning knobs. This them? Next steps?
 

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Yes, that’s it, so you have a single operated valve, and you need either a flat bladed/slotted screwdriver or a kitchen knife, and turn the right hand valve where the screw slot is, do it slowly so you have control and don’t over pressurise it.

Edit: don’t keep topping up regularly though, if it keeps happening, then you may have a leak on the system somewhere, or at the boiler.
 
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Thanks so I managed to move the right one and I hear pressure/water. But no pressure gauge movement. Am I suppose to open left at same time? Also the black nozzle they are connected to is set to open. Is this correct? Many thanks folks!
 
the other valve is a non-return valve, give it time the pressure will rise, dont touch the black knob
 
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As per @ianmcd, give it time, try and open it a bit more if you haven’t opened it fully.
 
Water sprinkling out a little as I go here? Is that ok? Sorry just afraid of blowing something up haha. Still no pressure movement but maybe I'm just not giving it time. Are we talking minutes or seconds?
 
dont worry about the water sprinkling just put a towel or a bowl to catch it, all depends on how much water has been lost from the system, how long it will take, you didnt touch any of the valves below the boiler did you ?
 
I previously turned the black one to 'shut' to see what would happen, but moved it back after. Stopped the pressure now but quite a bit if dripping water from up top.
 
Ok so pressure correct now but water really dripping from top. All ok?
 

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Nope not OK you have a leak somewhere, did you open a rad to bleed it and forget to close it again ?
 
Found leaking here but tightened a nut and stopped it. This is first time using system in a house I bought.
 

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