One question that comes up regularly is "Can I connect a new back boiler to my existing heating system?"
The answer to that is usually yes but it really depends on the type of back biomass boilers. My own back boiler is manufacturered by Grant engineering (can't remember what it is called now) but by connecting my Biomass stove in combination with a thermal store I managed to get the job done.
It's also possible to hook it up with a conventional boiler which will run your central heating at times when the stove is not on or to link the stove to another renewable energy heat source such as a solar water heating system. Having said this it's possible with some back boilers and stoves to have an all in one system which can provide your heating, hot water and also hot plate to even cook your food upon! Talk about convenience!
Connecting your back boiler and stove to a solar thermal heating system are particularly useful and a good combination. doing it this way allows you to heat your home in the winter with your Biomass fuel and in the summer time the solar panels can provide you with the source of energy you will need when no central heating is required.
As usual there are always advantages and disadvantages to buying a back boiler, there is a particular good blog post over at Grant May's site http://grantmay151.blog.com/2013/10/22/6-good-reasons-to-switch-to-a-back-boiler-7-reasons-not-to/
which spells out some good point for and against back boilers.
Bye for now :)