Typical wood, coal, biomass boiler installation .
Below is a typical solid fuel central heating boiler installation, domestic and located in the garage.
This system is a dual heat type, this means there are 2 sources of heat plumbed into the central heating system, to the left is a DWBi multi fuel boiler that is burning timber, in the center is the buffer tank which is storing the heat and smoothing out temperature oscillations associated with burning solid fuels and to the right is oil boiler. To switch between two boilers is just a matter of switching the socket On or Off for either boiler.
Couple of videos of our wood burning multi fuel boilers in action, both fitted with buffer / accumulator tanks, both have another heat source these can be gas, electric or oil central heating boilers