elco THISION S PLUS - Water Quality for DHW Facilities

21
Denition of water types
Drinking water
- Tap water, in conformity with the
European
Drinking Water Directive: 98/83/EC,
dated 3 November 1998.
Softened water
- Water, from which calcium and
magnesium ions have been
partially removed.
Demineralized water
- Water, from which almost all salts
have been removed (very low
conductivity).
Distilled water
- Water, in which no more salts are
present
Water quality for DHW facilities
- When the amount of chloride is
abovetherequiredspecications
mentioned above in table 2, in case
of the use of a combi boiler will void
the warranty for DHW parts of the
boiler.
Parameters Value
Water type Drinking water
pH 7.0-9.5
Conductivity (at 20°C in µS/cm) Max 2500
Chloride (ppm) Max 150
Iron (ppm) Max. 0.2
Hardness (°dH / °fH) 1-12 °dH / 1-21.5 °fH
Number of bacteria colonies at 22°C (number/ml) according
to EN ISO 6222
Max. 100
Table 2
Installation
Water and hydraulic system
DHW quality