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evening all, the clear pipe is attached to a venturi inside the outer casing of the boiler, no where near the important components or connected to anything else. Its allowing free passage of air, which imo shouldn't. As soon as water flows, the pressure drop creates a vacuum which ignites...

Thanks for the advise so far, had a result.....sort of... spoke to the manufacturer this morning, "apparently" there a part I need to clean... The red hose (vacuum) is what starts the kit working, but the clear hose turns it off due to over-pressure/ heat etc.. I've found the little...

Evening, Came home tonight to no hot water, traced the fault to the air switch, which works fine when the positive pressure pipe/hose is disconnected. PCB switching on vacuum (Red hose). Is it safe to leave the positive hose (clear) off? I called the local Corgi bloke, offered to...