In article ,
rick wrote:
After another 6 days with no heating ..... boiler repaired under
maintenance cover (burner, burner door, seal & electrodes), but thinking
it's time to look at replacing .... becoming pretty unreliable.
Its now 22 years old.
Its a 30kW Heat only wall mounted gas condensing boiler - connected to a
pressurised thermal store.

I need a standard/Heat only ..... can't use as system boiler (as thermal
store control need to manage pump)

Is that the case today? No thermal store can be used with a system boiler?
When I did a self install quite a few years ago, Viessmann had an
incredibly helpful technical advice guy in the UK. Seemed to know
everything.

Just that system boilers being the norm, may be far better value due to
economy of scale.

--
*My dog can lick anyone

Dave Plowman London SW
To e-mail, change noise into sound.