| 1 | BI1313 101 | Burner | | |
| 2 | BI1462 100 | Expansion vessel | | |
| 3 | BI1432 101 / H58-660 | Condensing heat exchanger | | |
| 4 | BI1313 102 | Fan | | |
| 5 | BI1313 103 | Gas Valve | | |
| 6 | BI1181 100 / H50-189 | Safety valve | | |
| 7 | BI2035 100 | Main Electronic control/ignition p.c.b. | | |
| 8 | | Interface electronic p.c.b. | | |
| 9 | | Control panel electronic p.c.b. | | |
| 10 | BI1001 102 / E01-205 | D.h.w. heat exchanger | | |
| 11 | | Pump | | |
| 12 | BI1442 106 / H74-553 | Temperature probe (main circuit) | | |
| 13 | BI1441 501 | D.h.w. flow switch | | |
| 14 | BI1441 104 | D.h.w. flow sensor | | |
| 15 | BI1431 101 | Primary circuit pressure switch | | |
| 16 | BI1431 100 | Three way diverter valve (electric actuator) | | |
| 17 | BI1262 118 / H20-989 | Condensate trap | | |
| 18 | BI1172 105 / E83-101 | Overheat thermostat | | |
| 19 | BI1432 102 / H58-661 | Flue temperature probe NTC | | |
| 20 | BI1165 112 / E23-792 | Fuse 2 AF | | |
| 21 | KI1042 501 / 169-016 | Temperature probe (D.h.w. circuit) | | |
| 22 | BI1293 103 / H58-709 | Detection electrode | | |
| 23 | BI1293 102 / H58-709 | Ignition electrode | | |
