Hi,

Once an unvented central heating system is up to temperature, how often
would one expect the boiler to fire, and for how long?

Mine seems to go on and off in fairly quick cycles, although I haven't
actually sat down and measured them (it would involve sitting on the
toilet, as its inaudible from most of the house).

Thanks for any advice
- Ian

--
Ian Chard, Senior Unix and Network Admin | E:
Systems and Electronic Resources Service | T: 80587 / (01865) 280587
Oxford University Library Services | F: (01865) 242287