This is a New Design of our solar heating systems. Also it is
a pressurized solar heating systems. 

Normally the WILO pump, expansion tank and the controller are seperated 
from the water tank. But for our FREE-CS solar heating system, the WILO pump,
expansion tank and controller are on the top of the water storage tank. 

So it is more easy to install, also more convenient to use.

Also the EN12975 and EN12976 solar heating products are available now.