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8.2 - Hydronic connections
The hydronic module options are only compatible with closed loops.
The use of the hydronic module on open systems is prohibited.
1 Screen lter (mesh opening 1.2 mm = 20 mesh)
2 Expansion tank (option)
3 Safety valve
4 Water pump (single of dual pump)
5 Air purge
6 Water drain valve
7 Pressure sensor
Note: Provides information of pressure at the suction of the pump
8 Temperature probe
Note: Provides information of temperature at the heat exchanger outlet
9 Temperature probe
Note: Provides information of temperature at the heat exchanger inlet
10 Pressure sensor
Note: Provides information of pressure at unit outlet
11 Plate heat exchanger
12 Evaporator heater for frost protection (option)
13 Flow rate sensor for the evaporator (provided)
System components
14 Air purge
15 Flexible connection
16 Shut-o valve
17 Screen lter (mandatory in the case of a unit without hydronic module)
18 Pressure gauge
19 Water ow control valve
Note: Not required if hydronic module with variable speed pump
20 Charge valve
21 Bypass valve for frost protection (if shut-off valves are closed
(item 16) during winter)
22 Flexible connection
23 Thermowell
24 Buer tank (if required)
---- Hydronic module (unit with hydronic module option)/Components delivered with
chiller (unit without hydronic module option)
- The system must be protected against frost.
- The hydronic module of the unit and the evaporator are protected (option 42 A installed in the factory) against frost with electric heaters (item 12 +
) (unit with hydronic
module option).
- The evaporator and the water outlet pipes are protected (option 41 installed in the factory) against frost with electric heaters (item 12 +
) (unit without hydronic module
option).
- The pressure sensors are assembled on connections without Schrader. Depressurise and drain the system before any work.
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