| 1 | | Front panel | | |
| 2 | | Profiled seal | | |
| 3 | | Viessmann logo | | |
| 4 | | Wall mounting bracket | | |
| 1 | | Gasket DN 60 | | |
| 2 | | Boiler flue connection | | |
| 3 | | Boiler flue connection plug | | |
| 4 | | Flue gasket | | |
| 5 | | Flue gas temperature sensor | | |
| 6 | | Heat exchanger | | |
| 7 | | Condensate hose | | |
| 8 | | Splash siphon | | |
| 9 | | Tee connector Ø 19 | | |
| 10 | | Gas connection | | |
| 11 | | Gasket A 17 x 24 x 2 (5 pce) | | |
| 12 | | Burner | | |
| 13 | | Thermal insulation block | | |
| 14 | | Heat exchanger mounting (set) | | |
| 15 | | O-ring 20.63 x 2.62 (5 pce) | | |
| 16 | | Corrugated hose 19 x 155 with ferrule/bend | | |
| 17 | | Corrugated hose 19 x 500 with ferrule | | |
| 18 | | Ignition transformer | | |
| 1 | | Burner gasket Ø 187 | | |
| 2 | | Thermal insulation ring | | |
| 3 | | Cylinder burner gauze assembly | | |
| 4 | | Burner gauze assembly gasket | | |
| 5 | | Burner door | | |
| 6 | | Gasket, ionisation electrode (5 pce) | | |
| 7 | | Ignition/ionisation electrode | | |
| 8 | | Burner door flange gasket | | |
| 9 | | Radial fan NRG 118 | | |
| 10 | | Gas valve GB-ND 055 E01 | | |
| 11 | | Venturi extension | | |
| 12 | | Gasket set G20/G31 | | |
| 13 | | Conversion kit G20/G31 | | |
| 1 | | Diaphragm expansion vessel CRI 8 | | |
| 2 | | Diaphragm expansion vessel padding profile | | |
| 3 | | Gasket A 10 x 15 x 1.5 (5 pce) | | |
| 4 | | DEV connection line G 3/8 | | |
| 5 | | Connection elbow HR brass | | |
| 6 | | Profile hose HR | | |
| 7 | | Spring clip DN 25 (5 pce) | | |
| 8 | | Clip Ø 10 (5 pce) | | |
| 9 | | Clip Ø 8 | | |
| 10 | | O-ring 20.63 x 2.62 (5 pce) | | |
| 11 | | Temperature sensor | | |
| 12 | | Circular seal washer 8 x 2 (5 pce) | | |
| 13 | | Profile hose HF | | |
| 14 | | Pressure gauge | | |
| 15 | | Thermal circuit breaker | | |
| 16 | | Connection elbow HF | | |
| 17 | | Grundfos hydraulics | | |
| 18 | | Spring clip DN 30 | | |
| 1 | | Flow casing EU1 | | |
| 2 | | Temperature sensor | | |
| 3 | | Expansion tank | | |
| 4 | | O-ring 19.8 x 3.6 (5 pce) | | |
| 5 | | O-ring 16 x 3 (5 pce) | | |
| 6 | | Clip Ø 8 narrow (5 pce) | | |
| 8 | | Plate heat exchanger | | |
| 9 | | Circulation pump motor | | |
| 10 | | Return casing | | |
| 11 | | Flow limiter | | |
| 12 | | Stepper motor | | |
| 15 | | Air vent valve | | |
| 18 | | Flow sensor | | |
| 19 | | Clip Ø 8 | | |
| 20 | | Clip Ø 16 | | |
| 22 | | Connection elbow | | |
| 23 | | Air box floor | | |
| 25 | | Dummy adaptor, time switch | | |
| 28 | | Gasket set, plate heat exchanger | | |
| 30 | | Tee connector Ø 19 | | |
| 1 | | Programming unit | | |
| 2 | | Burner control unit | | |
| 3 | | Cable harness X1/X17/stepper motor | | |
| 4 | | Cable harness 100/35/54/ion | | |
| 5 | | Cable harness, connecting cable X21/GFA/programming unit | | |
| 6 | | Outside temperature sensor lead | | |
| 7 | | Connecting cable, heating circuit pump 20 | | |
| 8 | | PWM BUS cable | | |
| 9 | | Power cable | | |
| 10 | | Fuse 2.5 A (slow) 250 V | | |
| 1 | | Touch-up spray paint, Vitowhite, 150 ml can | | |
| 2 | | Touch-up paint stick, Vitowhite | | |
| 3 | | Special grease | | |
| 4 | | Operating instructions | | |
| 5 | | Installation and service instructions | | |
