The following spare parts are available for the model number VNO R40 G20S (3748251):
Burners
Controls
| Part name | Also known as |
| 30-01-156 - G5/10/20 530 Se Control Box | G5/10/20 530 Se controller, G5/10/20 530 Se ignition controller, G5/10/20 530 Se electronic controller, G5/10/20 530 Se auto ignition controller, G5/10/20 530 Se main burner relay |
Dampers
| Part name | Also known as |
| 3000645 - G20S Air Damper Assembly |
Filters
| Part name | Also known as |
| 29-15-012 - Fuel Filter 1/4" |
Gas Valves
| Part name | Also known as |
| 28-30-102 - Lever Action Fire Valve | |
| 29-03-007 - Thermostatic Fire Cut Off Valve 3/8" 72 Degree C | |
| 30-02-279 - G5/10/20 Solenoid Coil |
Other Heater Components
| Part name | Also known as |
| 20031999 - G20S Oil Pump | |
| 30-02-280 - G5/10/20 Photocell | |
| 3002919 - G20 Electrode Assembly |