For Following Units:
- Bosch Therm 520HN tankless water heaters
- Bosch AquaStar 1600H and 125HX
- Bosch ProTankless 425HN and 425HNO tankless water heaters
- Bosch WR400 Series heater, WR400-7K V1G23S3195.
- 8707406043
- 8707426026
- 8707406059
- 8707406069
- 8707406095
- 8707406071
