6
Hydro Unit
– Exploded View
1. Expansion vessel
2. Hi Pressure switch (4.15 MPa)
3. Temperature sensor (for Heat pump outlet -TWO)
4. Pressure sensor
5. Heat exchanger
6. Flow switch (13.0 L/min 17.5 L/min)
7. Temperature sensor (for refrigerant -TC)
8. Temperature sensor (for water inlet -TWI)
9. Drain nipple
10. Water inlet connection
11. Refrigerant liquid connection
12. Air relief valve
13. Pressure relief valve (0.3 MPa (3 bar))
14. Thermal protector (auto)
15. Temperature sensor (for water outlet THO)
16. Thermal protector (Single operation)
17. A-rated water pump
18. Backup heater (3 kW, 3 kW x 2, 3 kW x 3)
19. Manometer
20. Water outlet connection
21. Refrigerant gas connection
