Central heating and hot water not seperated?

[Hib]

Hi folks,

A job i'm working at at the mo doesn't seem to have a way of seperating the power to the CH from the HW. In other words, when you want the central heating on, you get hot water whether u want or not - this doesn't seem right.

Is this likely at all? or am i just misunderstanding something?

It's a vented system with an oil burner

Thanks for ur help

 

[slapper]

Its because its an old gravity feed on the how water circs,wired up for pump and boiler. In other words you can have hot water on its own , but not central heating.

Thats the way it was installed, probably many moons ago