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8 - WATER CONNECTIONS
15
17
14
16
14
16
17
21
Legend
Components of the unit and hydraulic module
1
Victaulic screen filter
2
Pressure sensor
Note: Gives pump suction pressure information (see installation manual)
3
Relief valve
4
Water drain valve
Note: A second valve is located on the heat exchanger leaving piping
5
Shut-off valve
6
Available pressure pump
7
Temperature probe, BPHE inlet Note: Gives heat exchanger entering temperature
information (see installation manual)
8
Pressure gauge
Note: Allows measuring of the pump suction pressure, the pump leaving pressure
and the heat exchanger leaving pressure
9
Temperature probe, BPHE outlet
Note: Gives heat exchanger leaving temperature information (see installation
manual)
10 Automatic air vent
11
Flow switch
12 Plate heat exchanger frost protection heater
13 Plate heat exchanger
Typical hydraulic circuit diagram
19
18
1
22
11
19
20
2
3
6
5
4
10
Installation components
14 Temperature probe well
15 Air vent
16 Flexible connection
17 Shut-off valve
18 Screen filter (obligatory for a unit without hydraulic module)
19 Pressure gauge
20 Water flow control valve (optionnal with hydraulic module option)
21 Charge valve
22 Frost protection bypass valve (when shut-off valves [17] are closed during winter)
---
Hydraulic module (unit with hydraulic module)
Notes:
U nits without hydraulic module (standard units) are equipped with a flow switch
-
and two temperature sensors (7 and 9).
For units equipped with hydraulic module, the pressure sensor located upstream
-
of the pump to prevent cavitation is installed on a connection without Schraeder
valves. Depressurise and drain the system before any intervention.
7
13
5
4
4
8
5
9
12
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