"Toby" wrote in message
...
As stated about the Worcester Greenstar Condensing Combi -
"Key features of the Greenstar include the pre-heated domestic hot water
heat exchanger. After the store has reached temperature hot water is
delivered instantly to the outlet being operated. The temperature and
frequency of the recharge of the store may be pre-set. Modulating central
heating and domestic hot water outputs, combined with separate consumer
controls, also mean that comfortable temperature levels for both can be
set
independently of each other."

Does that meant that for short runs the boiler won't fire up but will use
water in the small tank and if you run the tap for longer then the bolier
kicks in?

EG I rinse a mug out, 5-10 seconds of water, boiler doesn't fire up HW
comes from mini storage tank.
I wash my hands water comes from hot water store until its level drops to a
certain level then boiler kicks in and supplies water to tap and refils
storage tank
I have a shower water comes from hot water store until its level drops to a
certain level then boiler kicks in and supplies water to shower and refills
storage tank when I've finished my shower.

I don't want to be heating a whole load of water I'll not be using or I'll
be in the same state as the house is now with a boiler and a hot water tank.

Any one suggest a website where I can find out more?

Chris J