| 402 | 333 837 | Gas Valve Solenoid | | |
| 4039 | 333 879 | Pilot Tube Seal To Combustion Chamber | | |
| 4254 | 333 722 | Auto Air Vent | | |
| 4640 | 333 888 | Gas Valve Complete | | |
| 4961 | 333 902 | Thermocouple | | |
| 5280 | 301 112 | Pilot Assembly | | |
| 5351 | 301 085 | Main Heat Exchanger | | |
| 6025 | 379 279 | Grundfos UPS 15-50 AO Pump | | |
| 6872 | 301 188 | Flow Diapragm | | |
| 6882 | 301 180 | Domestic Diapragm | | |
| 7070 | 379 736 | Pressure Differential Switch | | |
| 7095 | 301 217 | Main Burner (N.G.) | | |
| 7098 | 301 216 | Gas Service Cock | | |
| 7099 | 301 214 | Cold Water Inlet Service Cock (Adjustable) | | |
| 7159 | 301 269 | Pressure Gauge | | |
| 7204 | 301 145 | Expansion Vessel | | |
| 7311 | 384 188 | Thermocouple Interrupter | | |
| 7618 | 370 435 | Fan | | |
| 8031 | 301 256 | Modulator coil | | |
| 8036 | 301 335 | Domestic Heat Exchanger | | |
| 8428 | 301 342 | Heating Flow & Return Manifold | | |
| 8429 | 301 339 | Domestic Manifold Section | | |
| 8433 | 301 343 | Safety Valve | | |
| 8468 | 301 365 | D.H.W. Microswitch | | |
| T0019 | 301 275 | Service Kit | | |
