Hydronic module
The hydronic module reduces the installation time. The unit
is factory-equipped with the main hydronic components
required for the installation: screen filter, water pump,
expansion tank, safety valve and pressure gauge.
The hydronic module is integrated into the unit without
increasing its dimensions and saves the space normally
used for the water pump.
The water heat exchanger and the hydronic module are
protected against frost down to -10°C, using an electric
resistance heater (standard) and pump cycling.
Typical hydronic circuit diagram
17-21 kW
26-40 kW
23
15
14
2
17
16
21
25
18
19
20
24
16
25
18
19
23
1
7
13
10
4
22
9
3
8
2
5
21
12
16
25
18
19
16
25
18
19
11
1
20
24
7
13
9
4
12
3
21
22
27
HEATING
26
14
17
11
6
21
15
5
6
26
10
8
27
Hydronic module (unit with hydronic module)
Automatic water fill system option
Legend
Components of the unit and hydronic module
1. Screen filter
2. Expansion tank
3. Safety valve
4. High-pressure pump
5. Air purge
6. Water drain valve
7. Flow sensor
8. Plate heat exchanger leaving temperature sensor
9. Plate heat exchanger entering temperature sensor
10. Pressure gauge
11. Plate heat exchanger
12. Heat exchanger frost protection heater
13. Pipe frost protection heater
14. Shut-off valve (automatic water fill option)
15. Pressure reducer (automatic water fill option)
438
System components
16. Temperature sensor well
17. Air purge
18. Flexible connections
19. Shut-off valve
20. Screen fiter (obligatory for a unit without hydronic module)
21. Pressure gauge
22. Flow control valve (factory-supplied for field installation)
23. Charge valve
24. Frost protection bypass (when shut-off valves are closed in winter)
25. Pressure sensor
26. System drain valves
27. Plate heat exchanger drain valve
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7