29
Typical hydronic circuit diagram with hydronic module
legend
Components of the unit and hydronic module
1 Victaulic screen filter
2 Expansion tank (option)
3 Safety valve
4 Available pressure pump
Note: x 1 for a single pump, x 2 for a dual pump
5 Air purge
6 Water drain valve
Note: A second valve is located on the heat exchanger leaving piping
7 Pressure sensor
Note: Gives pump suction pressure information (see installation manual)
8 Temperature probe
Note: Gives heat exchanger leaving temperature information (see installation
manual)
9 Temperature probe
Note: Gives heat exchanger entering temperature information (see installation
manual)
10 Pressure sensor
Note: Gives unit leaving pressure information (see installation manual)
11 Check valve
Note: x 2 for a dual pump, not provided for a single pump
12 Plate heat exchanger
13 Water heat exchanger frost protection heater
Installation components
14 Temperature probe well
15 Air vent
16 Flexible connection
17 Shut-off valve
18 Screen filter (obligatory for a unit without hydronic module)
19 Pressure gauge
20 Water flow control valve
Note: Not necessary for a hydronic module with a variable-speed pump
21 Charge valve
22 Frost protection bypass valve (when shut-off valves [17] are closed during
winter)
--- Hydronic module (unit with hydronic module)
Notes:
• Units without hydronic module are equipped with a flow switch and two
temperature sensors (8 and 9).
• The pressure sensors are installed at connections without Schraeder valves.
Depressurise and drain the system before any intervention.
Hydronic module - sizes 039-078
Dual pump shown
Hydronic module - sizes 080-160
Dual pump shown
(option)
Summary of Contents for 30RQ 039 Series
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