31
8.2 - Water connections
The hydraulic module options are compatible only with closed loops.
The use of the hydraulic module on open systems is prohibited.
Typical hydraulic circuit diagram without hydraulic module
12
9
8
6
21
19
19
22
T
T
Op
�
on
23
Op
�
on
Op
�
on
21
14
25
16
16
13
13
13
20
19
18
Typical hydraulic circuit diagram with hydraulic module
12
9
8
3
4
7
6
6
21
24
19
19
16
17
22
T
P
T
Op
�
on
20
1
10
P
5
16
19
Op
�
on
11
23
13
Op
�
on
Op
�
on
Op
�
on
21
13
2
13
13
13
Op
�
on
6
5
23
25
25
13
15
18
18
Key
Components of the unit and hydraulic module
1 Screen filter (particle size of 1.2 mm)
2 Expansion tank (option)
3 Relief valve
4 Circulating pump (single or dual)
5 Air purge
6 Water drain tap
7 Pressure sensor
Note: Provides pressure information for the pump inlet (see Control manual)
8 Temperature probe
Note: Provides temperature information for the water exchanger outlet (see Control
manual)
9 Temperature probe
Note: Provides temperature information for the water exchanger inlet (see Control
manual)
10 Pressure sensor
Note: Provides pressure information for the water exchanger outlet (see Control
manual)
11 Check valve (if dual-pump)
12 Plate heat exchanger
13 Heater or heat trace cable for frost protection (Option)
14 Water type heat exchanger flow rate sensor
15 Buffer Tank Module (Option)
System components
16 Pocket
17 Air purge
18 Flexible connection
19 Shut-off valve
20 800 µm screen filter (Option - mandatory in the case of a unit without hydraulic
module)
21 Pressure gauge
22 Water flow control valve
Note: not required if hydraulic module with variable speed pump
23 Charge valve
24 Bypass valve for frost protection (if shut-off valves are closed (item 19) during
winter)
25 Buffer tank (if required)
---- Hydraulic module (unit with hydraulic module option)
Notes:
- The system must be protected against frost.
- The unit's hydraulic module and the water type heat exchanger may be protected
(factory-fitted option) against freezing using electric heaters and heat trace cables (13)
- The pressure sensors are assembled on connections without Schrader. Depressurise
and drain the system before any work.
Содержание 30RBM 160
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