| Comment | As WG47 has said, the silver pipe facing the camera is the "filling loop".
The pressure in the heating system (i.e. around all the pipes and radiators) is lower than the pressure on the incoming cold water mains. If the pressure drops too much, from a minor leak somewhere, the boiler won't fire up.
(Chances are it'll fire if you run the hot water tap, because that's a different system, they're known as "combi" boilers because both functions are combined in the one unit)
The loop jumps between the cold water main, and your closed circuit around the radiators. Ignore the red, yellow, and blue valves. The ones you need are in the silver fittings at each end of the filling loop. You might need a flat bladed screwdriver to get into them. Often it's just a quarter turn to get them open, chances are you'll need to do both.
The pressure gauge is at the right hand side of the front panel. Once both valves are open you'll begin to hear water running through the pipes and the gauge will slowly rise. It's pointing at nine-o-clock just now, I'd guess it'll want to be around eleven o-clock or so, it varies from boiler to boiler.
Remember to turn the valves on the filling loop off again once you're at a sensible level. |
|---|