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Typical hydronic circuit diagram without hydronic module
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Typical hydronic circuit diagram with hydronic module
Typical hydronic circuit diagram without hydronic module
Legend
Components of the unit and hydronic module
1 Screen filter (Mesh1.2 mm)
2
Expansion tank (option)
3
Discharge valve
4 Available pressure pump (single pump, or dual pump)
5
Air purge
6
Water drain valve
7
Pressure sensor
Note: Gives pump suction pressure information (see regulation manual)
8 Temperature probe
Note: Gives heat exchanger leaving temperature information (see regulation
manual)
9 Temperature probe
Note: Gives heat exchanger entering temperature information (see regulation
manual)
10 Pressure sensor
Note: Gives heat exchanger leaving pressure information (see regulation manual)
11 Check valve (If dual pump)
12 Plate heat exchanger
13 Heater or tracer for frost protection (Option)
14 Flow sensor for water heat exchange
15 Buffer tank module (option)
Installation components
16 Thermowell
17 Air purge
18 Flexible connexion
19 Shut-off valve
20 Screen filter (obligatory for a unit without hydronic module)
21 Pressure gauge
22 Water flow control valve
Note: Not necessary for a hydronic module with a variable-speed pump
23 Charge valve
24 Frost protection bypass valve (when shut-off valves (19) are closed during winter)
25 Buffer tank (if necessary)
--- Hydronic module (unit with hydronic module)
Notes:
• The system must be protected against frost.
• The hydronic module of the unit and the exchanger can be protected (option
factory installed) against frost with electric heaters and tracers (13).
• The pressure sensors are installed at connections without Schraeder valves.
Depressurise and drain the system before any intervention.
Summary of Contents for 30RQS039
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