DeDietrich AWHP-2 MIT-IN-2 iSystem Installation And Service Manual page 43

AWHP-2 MIT-IN-2 iSystem
25/06/2014 - 7616371-001-04
WARNING
Do not add chemical products to the central heating
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water without first consulting a water treatment
professional. For example: antifreeze, water
softeners, products to increase or reduce the pH
value, chemical additives and/or inhibitors. Chemical
products may cause malfunctions on the heat pump
and damage the heat exchanger.
Do not use hydrochloric acid-based cleaning or
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descaling products.
CAUTION
Check the compatibility of the product with the
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materials used in the installation.
Check the compatibility of the product with stainless
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steel and copper.
Respect the manufacturer's instructions (use, dose,
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etc.) to obviate any hazards (corporal, material,
environmental).
An uncleaned installation or an installation using
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water of unsuitable quality may bring about the
cancellation of the warranty.
Flush the central heating installation with at least 3x
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the volume of the central heating installation.
Flush the DHW pipes with at least 20 times the volume
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of the pipes.
For an optimum functioning of the boiler, the water of the installation
must comply with following characteristics:
Acidity (pH)
Conductivity at 25°C
Chlorides
Other components
Hardness of the water of the installation °f
If a water treatment is necessary, De Dietrich
Thermique recommends the following manufacturers:
Cillit
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Climalife
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Fernox
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Permo
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Sentinel
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4. Installation
Output ≤ 70 kW
7.5 - 9
µS/cm 10 to 500
mg/l < 50
mg/l < 1
7- 15
°dH 4- 8.5
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