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ST 400 / 500 / 600 / 750 / 1000
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1 Technical specifications
1.1 Floor load
1.2 Water composition
1.3 Working clearance
Allow for the storage tank's weight and the maximum floor load; refer to the table (1.4
"General specifications").
The storage tank is intended for heating drinking water. The drinking water must comply with
the regulations governing drinking water for human consumption. The table gives an
overview of the specifications.
Water specifications
Water composition
Hardness
(alkaline earth ions)
> 1,00 mmol/l:
German hardness > 5,6 °dH
French hardness > 10,0 °fH
English hardness > 7,0 °eH
> 100 mg/l CaCO
3
Conductivity > 125 µS/cm
Acidity (pH value) 7,0 < pH value < 9,5
Note
If the water specifications deviate from those stated in the table, then the tank protection
cannot be guaranteed (4"Warranty").
For access to the storage tank, it is recommended that the following clearances are
observed:
around the anode connection: 100 cm.
around the storage tank: 50 cm.
top of the storage tank: 50 cm
1.4 General
specifications
Unit ST 400 ST 500 ST 600 ST 750 ST 1000
Contents litres 405 499 678 763 1055
Empty weight kg 99 131 179 201 262
Maximum floor load kg 504 630 957 964 1317
Maximum operating pressure kPa (bar) 1000 (10) 1000 (10) 1000 (10) 1000 (10) 1000 (10)
Maximum water temperature ºC 95 95 95 95 95
Anodes - 1 1 1 1 1
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