1- Control centre  
                2- BM8 module (optional,  one per circuit) 
                3- FBR1 ambient sensor  (optional, one per circuit) 
                4- Radiators circuit 
                5- Heating pump 
                6- VFAS flow sensor 
                7- 3-way valve with  servomotor 
                8- Anti-condensation circuit  pump 
                9- VFAS return sensor 
                10- Solenoid valve 
                11- Heat generator 
                12- Boiler thermostat 
                13- Check valve 
                14- DHW cylinder 
                15- SPFS storage cylinder  sensor 
                16- DHW pump 
                17- DHW re-circulation  pump 
                18- AFS outdoor sensor 
                20- Boiler or header  (KFS) VFAS sensor   |