7
1. Lower casing
2. Upper casing
3. Display plate with a keyboard.
4. Heating unit
5. Flow sensor.
6. Air block sensors.
7. Inlet water temperature sensor.
8. Thermal switch
9. Pressure switch
10. Network terminals being parts of the
pressure switch
11. Hole for inserting the supply cable
12. Driver plate.
13. Power plate.
14. Connection of feedwater (cold)
15. Connection of feedwater (warm)
16. Terminal of the protective cable
Internal structure of the device
Pict. 6.