| 7 | | Main heat exchanger | | |
| 8 | 573520 / 164 225 | 3/4" gasket | | |
| 9a | | Main burner natural gas | | |
| 9b | | Main burner | LPG | |
| 15 | 570732 | Gas valve SIT TANDEM | | |
| 20 | | Divertor valve | | |
| 27 | | D.W. inlet safety valve 6 bar | | |
| 30 | 573521 / 164 282 | 3/8" gasket | | |
| 37 | | Low voltage PCB | | |
| 38 | | Pressure gauge | | |
| 48 | | Time control clock | | |
| 50 | | High voltage P.C.B. | | |
| 60 | 569434 / 164 242 | Collar for venturi device | | |
| 61 | 569435 / 164 243 | Venturi device | | |
| 63 | | Air pressure switch | | |
| 77 | | Transformer | | |
| 81 | 569561 | Left ignition electrode | | |
| 83 | 573441 | Detection electrode | | |
| 84 | 569560 | Right ignition electrode | | |
| 89 | | Fan | | |
| 98 | 569390 / 164 261 | 1/4" gasket | | |
| 103 | | D.H.W. cyclinder | | |
| 107 | | C.H. Expansion vessel | | |
| 112 | | T + P valve 7 bar | | |
| 115 | | Domestic water expansion vessel | | |
| 118 | 570248 | Overheat thermostat | | |
| 122a | 570251 | Burner jet 1,25Ø | | |
| 122b | 569387 / 164 230 | Burner jet 0,72Ø | | |
| 124 | 564254 / 379 079 | 1" gasket | | |
| 125 | | Automatic air release valve | | |
| 127 | | Pump | | |
| 132 | | C.H. Safety valve 3 bar | | |
| 133 | | Main flow switch with built in by pass (fully assembled) | | |
| 201 | 950030 | Fast fufe 2AT | | |
| 202 | 573745 | Gas modulator cartridge | | |
| 331 | 570711 | Divertor valve motor | | |
