Salvageable imo. Might need a new back rail, but ultimately looks like the condense hose has failed (common on this year/model), it even looks like it’s not attached and, if that’s the case, then your boiler man should have turned the boiler off and issued a do not use sticker and warning...
I only saw a bit of it last night. There seemed to be some bias towards Uraguay, and there seemed a lot of shoving. Uraguay deserved a conceded goal after that GK blunder - was it David James in goals? :ROFLMAO:
Yes it can be reduced in size to not less than 75mm for single or 2 storey properties. Or perhaps change the air admittance valve on the other one for the 110mm on existing and vice versa.
Contact your installer would be first port of call.
I don’t hold oil fitting qualifications, but sounds like it could be combustion related, so possibly plausible. My advice is to stop using it immediately, you could have a carbon monoxide issue.
It can still affect it, or another mixer. Basically the cold pushing the hot out of the way. Isolate the cold inlet to the boiler and test hot outlets including the shower.
Yes, there should be a motorised valve and it will be on the pipework, this then receives a switch live from the programmer and cylinder thermostat and then sends a switch live to the boiler.