boiler efficiency

[amstel]

Good evening all,
I have a glow worm 24hxi condesing boiler, which operates with 2x2port honeywell spring return motorised valves, no problem.
If we want hot water, I turn the boiler thermostat up to about 70degrees and with the cyl stat set about 60degrees I get a cylinder full of hot water in about 40 mins from cold, but most of the time I have just the heating on with the boiler stat set near minimum at 50 degrees giving warm radiators which are fine.
In other words I have either hw or heating on, but not at the same time, as each require different boiler operating temps, is this the correct way of operating the system? or am I doing something wrong?
and when is a condensing boiler operating most efficiently?
Kind regards.

 

[45yearsagasman]

Leave your boiler stat at 70. Rads will be hotter and the rooms will heat up quicker, and the room stat will shut down your system.

 

[ALEC1]

O would look to getting some glowworm comtrols installed, they do what yo are doing automatically, that is prioritise hot water at a higher temperature than heating..which varies according to demand..

climapro and systempro are the names of the products...

 

[dcawkwell]

You should have a wall thermostat and thermostatic radiator valves
then radiator temperature does not matter. The wall thermostat will switch off the boiler when the rooms reach temperature.