| A | 720768101 | Fan | | |
| B2 | 7212449 | Burner - 33 | | |
| C | 720767301 | Spark Ignition Electrode | | |
| D | 7211855 | Flame Sensing Electrode | | |
| E | 7214341 | Gas Valve | | |
| F | 720765301 | Safety Thermostat | | |
| G | 720061801 | Hall Effect Sensor | | |
| I | 720852401 | Plate Heat Exchanger | | |
| J | 720776801 | Diverter Valve Motor | | |
| K | 7220533 | Pump | | |
| M | 720747101 | Heating Flow/Return Sensor | | |
| N | 720777001 | DHW NTC Sensor | | |
| O | 720787601 | Pump Automatic Air Vent | | |
| P | 720778001 | Hydraulic Pressure Switch | | |
| Q | 7212896 | Heating Pressure Gauge | | |
| R | 720851401 | Flue Sensor | | |
| S3 | 7222710 | PCB - 33 ErP | | |
| U3 | 7211864 | ¯6.6 Gas Nozzle Injector - 33 | | |
| V3 | 7211860 | Air/Gas Venturi - 33 | | |
| W | 7211868 | Boiler Control HMI PCB | | |
