| A01 | 39848130 | LHS Casing | | |
| A02 | 39848230 | RHS Casing | | |
| A03 | 39848270 | Front Casing | | |
| B01 | 39845841 | PCB | | |
| B02 | 39845850 | Facia | | |
| B03 | 39848260 | Wiring Loom | | |
| B04 | 39846290 | Pressure Gauge | | |
| C01 | 39846260 | Heat Exchanger | | |
| C03 | 39845900 | Rear Heat Exchanger Insulation and Plate | | |
| C04 | 39845890 | Heat Exchanger Sensor | | |
| C05 | 39846061 | Fan and Burner Assembly | | |
| C06 | 39846080 | Heat Exchanger Seals | | |
| C07 | 39846091 | Electrode and Lead | | |
| C08 | 39846100 | Fan PCB | | |
| C09 | 39846110 | Air Silencer | | |
| C10 | 39820900 | Pump Assembly | | |
| C11 | 39818220 | Auto Air Vent | | |
| C12 | 39818260 | Low Water Pressure Sensor | | |
| C13 | 39818270 | Safety Valve | | |
| C14 | 39846250 | Expansion Vessel | | |
| C15 | 39846120 | By Pass valve | | |
| C16 | 39846130 | Flow Meter | | |
| C17 | 39812310 | DHW Filter | | |
| C18 | 39844100 | Flow Restrictor | | |
| C19 | 39819550 | Combined Stat / 100oC | | |
| C20 | 39810220 | Sensor C/W Bracket | | |
| C21 | 39810230 | DHW Sensor | | |
| C22 | 39846140 | Gas Valve | | |
| C23 | 39846900 | Injector - LPG | | |
| C24 | 39847570 | Condensate Trap | | |
| C25 | 39849800 | Air Separator | | |
| C26 | 39848280 | Isolation Valve Pack | | |
| C27 | 39848290 | Filling Loop | | |
| C28 | 39847430 | Heat Exchanger Seal - Graphite | | |
| P01 | 3841D781 | DHW Flow Pipe | | |
| P02 | 3841D412 | CH Return Pipe | | |
| P03 | 3841G571 | Bypass / Expansion Vessel Pipe | | |
| P04 | 3841D402 | DHW Inlet Pipe | | |
| P05 | 3841D815 | Gas Pipe | | |
