| 1 | BI1223 101 | Burner | | |
| 2 | BI1182 105 | Expansion vessel | | |
| 3 | BI1282 101 | Condensing heat exchanger | | |
| 4 | BI1223 113 | Fan | | |
| 5 | BI1223 111 | Gas valve | | |
| 6 | BI1131 100 | Safety valve | | |
| 7 | BI1805 103 | Electronic regulation p.c.b | | |
| 8 | BI1001 101 / E01---204 | D.h.w. heat exchange | | |
| 9 | BI1262 103 / H20 --- 993 | Pump | | |
| 10 | BI1251 501 | Primary circuit flow switch | | |
| 11 | BI1271 101 | D.h.w. flow switch | | |
| 12 | BI1011 103 / E00---688 | Main. flow switch membrane | | |
| 13 | BI1101 102 / E83---086 | Three way diverter valve (electric actuator) | | |
| 14 | BI1172 105 / E83---101 | Overheat thermosta | | |
| 15 | | Flue temperature probe NTC | | |
| 16 | BI1295 108 | Fuse 3,15 AF | | |
| 17 | BI1665 104 | Fuse 400 mA T | | |
| 18 | BI1001 117 / 164---026 | Temperature probe (main or D.h.w. circuit) | | |
| 19 | | Ignition electrode | | |
| 20 | BI1233 104 | Detection electrode | | |
| 21 | BI1475 108 / E83---145 | Temperature---pressure gauge | | |
