Hydronic module (option 116)
Pro-Dialog+ includes two operating modes:
-- constant pump speed
-- constant delta T control.
The hydronic module option reduces the installation time.
The heat pump is factory-equipped with the main hydronic
components required for the installation: screen filter, water
pump, relief valve, water pressure transducer, flow switch.
The Pro-Dialog+ control allows integration of system and
water pump protection devices (insufficient water flow rate,
water pressure, water flow rate etc.).
The pump supplied with the hydronic module is a variable
speed pump. With variable speed flow, the system no longer
requires the control valve at the unit outlet.
However, for applications with two-way valves a bypass
system must be kept to guarantee the minimum flow rate.
Hydronic module
HEATING
Components of the unit and hydronic module
1 Victaulic screen filter
2 Pressure sensor
Note: Gives pump suction pressure information (see installation manual)
3 Safety valve
4 Water drain valve
5 Shut-off valve
6 Water pump
7 Temperature sensors, 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 sensor, 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
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
21 Charge valve
22 Frost protection bypass valve (when shut-off valves [17] are closed during winter)
--- Hydronic module (unit with hydronic module)
15
18 19
17
1
2
16
3
6
5
7
5
4
8
16
17 20
4
4
22
14
The hydronic module option is integrated into the heat pump
without increasing its dimensions and saves the space
normally used for the water pump.
Legend
Typical hydronic circuit diagram
14
An automatic pump start-up algorithm protects the heat
exchanger and the hydronic module piping against frost
down to -10°C outside air temperature, as standard. If
necessary, increased frost protection down to -20 °C is
possible by adding heaters to the hydronic module piping
(see option 42).
19
11
10
9
13
12
Notes:
•
Units without hydronic module (standard units) are equipped with a flow switch and
two temperature sensors (7 and 9).
•
For units equipped with hydronic 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.
5
21
410
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A
R
R
I
E
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7