Installation & Servicing instructions ATAG A-Series
12
Parameter Value
Water type Potable water
Softened water
pH 6.0-8.5
Conductivity (at 20°C in µS/cm) Max. 2500
Iron (ppm) Max. 0.2
Hardness (°dH):
Installation volume/capacity
<20 l/kW
1-12
Installation volume/capacity
>=20 l/kW
1-7
Oxygen No oxygen diffusion allowed during ope-
ration.
Max. 5% lling water addition annually
Corrosion inhibitors Refer to Additives Attachment
pH increasing or lowering agents Refer to Additives Attachment
Anti-freeze additives Refer to Additives Attachment
Other chemical additives Refer to Additives Attachment
Solid substances Not allowed
Residues of processing water not for-
ming part of the drinking water
Not allowed
table 6.3.a
Water quality in DHW facility
Parameter Value
Water type Potable 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) 1-12
Number of bacterial colonies at 22°C
(number/ml). pr EN ISO 6222
Max. 100
table 6.3.b
- When the amount of chloride is above the required specications mentioned above
in table 6.3.b, it is necessary to apply an active anode in case of the use of a DHW
cylinder. If this is not met it will void the warranty for DHW parts of the installation.
- When the amount of chloride is above the required specications mentioned above in
table 6.3.b, in case of the use of a combi boiler will void the warranty for DHW parts
of the boiler.
Water type denition:
Potable water: Tap water compliant with the European drinking water guideline:
98/83/EG dated 3 November 1998.
Softened water: Water with partly de-ionised calcium and magnesium.
Demi-water: Virtually completely demineralised water (very low conductivity)
Distilled water: Water no longer containing minerals.