| 2 | 998616 / E61 468 | Expansion vessel | | |
| 6 | 573521 / 164 282 | Gasket 3/8" | | |
| 13 | 573528 / 164 229 | Gasket 1/2" | | |
| 17 | 998447 | Safety valve (1/4 "3 bar) | | |
| 18 | 569390 / 164 261 | Gasket 1/4" | | |
| 19 | 998627 | Pump pressure switch | | |
| 22 | 999610 | Return group | | |
| 23 | | D.H.W. Flow Switch | | |
| 25 | 997182 / E61 488 | Gasket | | |
| 28 | 998836 / E61 490 | Pump | | |
| 35 | 999599 | Time clock | | |
| 39 | 999724 | P.C.B.(T2 MFFI) | | |
| 40 | 999245 / E91 520 | Pressure gauge | | |
| 48 | 998484 | Air pressure switch | | |
| 61 | 999397 | Fan | | |
| 63 | 998458 | Temperature probe | | |
| 64 | 998619 | Exchanger | | |
| 68 | 998424 / E61 483 | O-ring | | |
| 69 | 574279 / E25 529 | Gasket | | |
| 71 | 997089 / E61 485 | Gas valve (SIT 845 SIGMA) | | |
| 72 | 573520 / 164 225 | Gasket 3/4" | | |
| 76A | 998618 / E61 547 | Burner 12 ramp (natural gas) | | |
| 76B | 998669 / E61 549 | Burner 12 ramp | LPG | |
| 80A | 998714 | Burner jet (natural gas 1.30) | | |
| 80B | 998715 | Burner jet | LPG 0.77 | |
| 86 | 998517 / E61 563 | Gasket | | |
| 89 | 998623 / E61 565 | Electrode (ignition R.H.) | | |
| 90 | 998622 / E61 567 | Electrode (ignition L.H.) | | |
| 91 | 998624 / E61 569 | Detection electrode | | |
| 93 | 997206 / E25 425 | Thermostat (overheat) | | |
| 351 | 998644 / E61 652 | O-ring (A.A.V.) | | |
| 352 | 998643 / E61 654 | Auto air vent | | |
| 353 | 998738 / E61 656 | Gasket (Pump head) | | |
| 354 | 998961 / E61 660 | Pump head | | |
| 361 | 998716 / E61 665 | Burner jet 1.30 full Kit (natural gas) | LPG | |
| 362 | 998717 / E61 667 | Burner jet 0.77 full kit | | |
