| A01 | 39848130 | LHS Casing | | |
| A02 | 39848140 | RHS Casing | | |
| A03 | 39849260 | Front Casing | | |
| B01 | 39845841 | PCB | | |
| B02 | 39847330 | Facia Panel | | |
| B03 | 39845870 | Wiring loom | | |
| C01 | 39845880 | Heat exchanger | | |
| C03 | 39845900 | Rear Heat Excanger Insulation and plate | | |
| C04 | 39845890 | Sensor - Heat exchanger | | |
| C05 | 39846061 | Fan - Burner asssembly | | |
| C06 | 39846080 | Seals - Heat exchanger | | |
| C07 | 39846091 | Electrode and Lead | | |
| C08 | 39846100 | PCB - Fan | | |
| C09 | 39846110 | Air silencer | | |
| C10 | 39818450 | Pump Assembly | | |
| C11 | 39818220 | Auto Air Vent | | |
| C12 | 39818260 | Sensor - Low Water Pressure | | |
| C13 | 39818270 | Safety Valve | | |
| C14 | 39846070 | Expansion Vessel | | |
| C15 | 39846120 | Valve - Bypass | | |
| C16 | 39846130 | Flow meter | | |
| C17 | 39812310 | Filter - Flow meter inlet | | |
| C18 | 39844090 | Flow limiter | | |
| C19 | 39819550 | Combined Stat Flow/1000C | | |
| C20 | 39810220 | Sensor - Return | | |
| C21 | 39810230 | Sensor - DHW | | |
| C22 | 39846140 | Gas Valve | | |
| C23 | 39846150 | Injector | NG | |
| C24 | 39847570 | Internal condensate pipe | | |
| C25 | 39849790 | Air seperator - Flow pipe | | |
| C26 | 39849250 | Valve pack | | |
| C27 | 39848290 | Filling loop | | |
| C28 | 39847430 | Heat exchanger seal - Graphite | | |
| P01 | 3841D392 | DHW flowpipe | | |
| P02 | 3841D412 | CH return pipe | | |
| P03 | 3841G571 | Bypass/Expansion vessel pipe | | |
| P04 | 3841D402 | DHW inlet pipe | | |
| P05 | 3841D424 | Gas pipe | | |
