Thermal Solar Panels With A Combi Boiler

Alex1983

Moss5 wrote: »

There is an alternative use of solar water heating combined with a combi boiler.

Your wet-solar system could be keeping an unvented hot-tank hot. Opening a hot tap causes the combi to fire and (after a delay) feed heated water to the hot tank.
This drives-out the stored hot water to the tap without delay.
The unvented tank could have an electric immersion heater to maintain temperature.
You will save water by not waiting for hot water to reach the tap.

Some combi boilers use a small tank of hot water to provide hot water at the tap without delay.

There would be no sense in that at all, in the winter months or rubbish days the tank will not be heated enough so you would be putting hot water from the boiler into a unvented tank that isn't up to temperature and getting cold water out of the tap.

To put a immersion heater on to maintain temperature would be the most costly way you could heat the tank.