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Discuss Boiler issues not firing after refill in the UK Plumbing Forum | Plumbing Advice area at PlumbersForums.net
Right so its not open vented.
Typically sealed systems are incredibly easy to get air locks out of.
Just to be sure, that's an old photo right? As your pump and valves aren't wired in.
Need a photo above the boiler of pipework arrangement too and one inside to tell you where to vent the heat exchanger, surprised though with a sealed system the pump won't clear that.
Check what speed your pump is set too and then turn it down to 1 which is the slowest, this may help prevent cavitation until the air clears
I did wander if there should of been something here....esp as the old system had some sort of weird mixing thing!check the top of the photo. You're missing an air vent. You basically have a massive high spot where air is trapped
Reply to Boiler issues not firing after refill in the UK Plumbing Forum | Plumbing Advice area at PlumbersForums.net
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