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5 Installation
Tab.23
Heating water specifications
Specifications
Hydrogen potential (pH)
Conductivity at 25°C
Chlorides
Other components
Total water hardness
5.7
Electrical connections
32
MIT-M
Important
Do not use glycol. The use of glycol in the heating circuit
invalidates the warranty.
1. Fill the installation until a pressure of 1.5 to 2 bars is reached. Read
the pressure on the mechanical pressure gauge.
Important
The mechanical pressure gauge located on the heating return is
only used when supplying the indoor unit with water. After the heat
pump is switched on, the pressure will be shown on the display.
2. Check for any water leaks.
3. Completely vent the indoor unit and the installation for optimum
running.
Treatment of the heating water
In many cases, the heat pump and the heating system can be filled with
mains water, without treating the water.
Caution
Do not add any chemical products to the heating water without
first consulting a water treatment specialist. For example:
antifreeze, water softeners, products to increase or reduce the pH
value, chemical additives and/or inhibitors. These may cause
faults in the heat pump and damage the heat exchanger.
The water in the installation must comply with following characteristics:
Unit
μS/cm
mg/litre
mg/litre
°f
°dH
mmol/l
If water treatment proves necessary, De Dietrich recommends the
following manufacturers:
Cillit
Climalife
Fernox
Permo
Sentinel
5.7.1
Recommendations
Warning
Only qualified professionals may carry out electrical
connections, always with the power off.
Earth the appliance before making any electrical connections.
Make the electrical connections on the appliance in accordance with the
requirements of the prevailing standards,
Make the electrical connections on the appliance in accordance with the
information given in the electrical schematics delivered with the
appliance,
Total system output
≤ 70 kW
7.5 - 9
10 to 500
≤ 50
< 1
7 - 15
4 - 8.5
0.7 - 1.5
7756241 - v02 - 19062020
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