| 1 | 573294 | Expansion vessel | | |
| 11 | 573520 / 164 225 | Gasket 3/4" | | |
| 14 | 997206 | Overheat thermostat | | |
| 17 | 997147 | Motorised valve motor | | |
| 20 | 573224 | Main flow switch | | |
| 21 | 569236 / 164 338 | Temp probe (C.H.W.) | | |
| 23 | 573528 / 164 229 | Gasket 1/2" | | |
| 25 | 573727 / 378 814 | Manual vent cock | | |
| 26 | 573172 | Safety valve 3 bar 1/2" | | |
| 28 | 950650 | D.H.W. probe | | |
| 30 | 571649 | Pressure gauge | | |
| 33 | 997208 | Time clock | | |
| 45 | 953095 | P.C.B. EB C MI/FFI | | |
| 47 | 952935 | P.C.B. E A-FFI/P | | |
| 48 | 952610 | P.C.B. cable | | |
| 58 | 572990 | Fan | | |
| 59 | 573343 | Fan inlet gasket | | |
| 62 | 573314 | Venturi (exhaust manifold/header) | | |
| 73 | 571652 / E02 071 | Air pressure switch | | |
| 76 | 570717 | Fastening spring | | |
| 85 | 564254 | Automatic air release valve | | |
| 86 | 569387 / 379 079 | Gasket 1" | | |
| 87 | 997151 | Pump | | |
| 89 | 573521 / 164 282 | Gasket 3/8" | | |
| 93 | 571965 | O-ring (13) | | |
| 94 | 574279 | Gasket | | |
| 95 | 574232 | Gas valve (SIT Sigma) | | |
| 101 | 574233 | Spark generator | | |
| 105 | 573441 / 379 981 | Detection electrode | | |
| 109 | 569390 / 164 261 | Gasket 1/4" | | |
| 111 | 569560 / 379 979 | Ignition electrode (R.H.) | | |
| 112 | 569561 / 379 980 | Ignition electrode (L.H.) | | |
| 113A | 572343 / E02 078 | Main burner | | |
| 113B | 572372 | Main burner | | |
| 114 | 572835 | Main exchanger | | |
| 301 | 571993 | Front panel runner kit | | |
| 321 | 997029 | Sit Sigma gas valve operator coils | | |
| 361 | 571443 | Heating by-pass kit | | |
| 362 | 571987 | Sanitary pressure switch kit | | |
| 363 | 571447 | Way and unit kit | | |
| 375 | 573138 | Main flow switch reed system | | |
| 381 | 569281 / 164 311 | Burner jet 1.25 full kit (Natural gas) | | |
| 382 | 569282 | Burner jet 0.72 full kit | LPG | |
