| 23 | 247380 / 393-947 | Pressure Switch. | | |
| 22 | 247381 / 378-864 | Fan | | |
| 41 | 247387 / 343-786 | Burner | | |
| 82 | 247388 / E03-572 | Pressure Differential Switch | | |
| 72A | 247390 | Pump Head | | |
| 73 | 247391 / 379-796 | Automatic Air vent | | |
| 140 | 247392 | Gas valve | | |
| 102 | 247395 | Diverter valve (3 Port Valve) | | |
| 169 | 247396 / 385-839 | Pressure Gauge | | |
| 92 | 247402 | Safety Valve 3bar | | |
| 274 | 247403 | Cartridge Pressure Reducing Valve | | |
| 275 | 247404 | Cartridge Expansion Relief Valve | | |
| 79 | 247405 | Storage Temp/Pressure Relief Valve | | |
| 32 | 247428 | Heat Exchanger | | |
| 35 | 247431 | Expansion vessel | | |
| 44 | | Burner Injector | | |
| 65 | 247382 | Electrode Sensing | | |
| 63 | 247383 | Electrode Ignition Rear | | |
| 64 | 247384 | Electrode ignition Front | | |
| 59 | 247385 | Electrode Lead Ignition | | |
| 284 | 247386 | Electrode Lead Sensing | | |
| 290 | 247389 | Microswitch Loom | | |
| 135 | 247393 | Limit Thermostat (O/Heat) | | |
| 131 | 247394 / 343-571 | Temperature Sensor | | |
| 172 | 247397 / 379-764 | Capacitor | | |
| 154 | 247398 | Main PCB | | |
| 155 | 247399 | Ignition PCB | | |
| 156 | 247400 | Neon PCB | | |
| 171 | 247401 / 343-718 | Relay PCB | | |
