| 9 | 171 414 / E83-619 | Sightglass assembly kit | | |
| 12 | 171 416 | Main burner | | |
| 13 | 171 428 / E87-010 | Main burner injector | | |
| 14 | 171 434 / E83-627 | Pilot burner injector | | |
| 15 | 171 438 / E83-630 | Pilot burner head Q359A with injector | | |
| 17 | 171 441 / E83-633 | Gas valve kit | | |
| 18 | 171 442 / 308 549 | Ignition electrode complete with lead and backnut 410 mm lg | | |
| 19 | 171 894 | Control box assembly, including PCB | | |
| 23 | 171 450 | Automatic ignition printed circuit board | | |
| 24 | 171 454 / E83-653 | Pressure switch | | |
| 26 | 171 929 / 308 283 | Thermostat knob | | |
| 30 | 171 461 / E83-665 | Fan assembly | | |
| 35 | 173 582 | Boiler casing assembly complete (white) | | |
| 35 | 173 583 | Boiler casing assembly complete (silver) | | |
| 37 | 173 586 | Controls casing door complete (white) | | |
| 37 | 173 587 | Controls casing door complete (silver) | | |
| 39 | 171 479 / E85-313 | Casing seal kit (white) | | |
| 39 | 173 588 | Casing seal kit (silver) | | |
| 45 | 171 950 / E83-682 | Overheat thermostat | | |
| 59 | 173 353 | Limit thermostat | | |
