It is a Firebird
The issue is boiler just seems to be very high maintenance.
Commiserations! So is ours.
Actually, the burner (Riello) and fire box seems to be very good, the rest of it is just a disaster. (Persistent leaking from most internal water fittings – the thing is plumbed like a tuba with bent and branched tubes going everywhere; leaks from the heat exchanger connections (modified washers needed); one pump (killed by water leaks); Non-return valves next to pumps disintegrated (seemed to be made out of a plastic that swelled up in hot water); leaking boiler vent; Failed hot water switch (£80 for a poxy little reed switch!!!); burst expansion vessel membrane; leaking thermostatic valve,… it goes on…)
If I had to pay someone to fix it, it would have been scrapped ages ago.
I’m thinking of a Grant to replace it, so watching this with interest.