ID.: 17-16-20-2976-06 | 6.2017
23
TYPE OF PRESENT SUBSTANCE
UNIT
CONCENTRATION
INFLUENCE TO THE HEAT CONDUCTOR
Organic sediment
mg/L
0
Ammonia (NH
3
)
mg/L
< 2
1 - 20
> 20
+
0
-
Chloride
mg/L
< 300
> 300
+
0
Allowed water hardness
°dH
5–10
Electrical conductivity
µS/cm
< 10
10-500
> 500
0
+
-
Iron (Fe) removed
mg/L
< 0.2
> 0.2
+
0
Free carbonic acid
mg/L
< 5
5-20
> 20
+
0
-
Manganese (Mn) removed
mg/L
< 0.1
> 0.1
+
0
Nitrates (NO
3
) removed
mg/L
< 100
> 100
+
0
pH value
mg/L
< 7.5
7.5-9
> 9
0
+
0
Oxygen
mg/L
< 2
> 2
+
0
Hydrogen sulphide (H
2
S)
mg/L
< 0.05
> 0.05
+
-
HCO
3
- / SO
4
2
-
mg/L
> 1
< 1
+
0
Hydrogen carbonate
mg/L
< 70
70-300
> 300
0
+
0
Aluminium (Al) removed
mg/L
< 0.2
> 0.2
+
0
Sulphates
mg/L
< 70
70-300
> 300
+
0
-
Sulphite (SO
3
)
mg/L
< 1
+
Chlorine (gas) (Cl
2
)
mg/L
< 1
1-5
> 5
+
0
-
Table: Influences of various aggressive substances in heating water on the durability of the
buffer tank for DHW (+ = no influence,
0
= danger of corrosion,
-
= corrosion, use not permitted).
CAUTION
The heating system has to be filled with water with the hardness between 5 °dH
and 10 °dH. Malfunctions of the device because of water hardness are not covered
by the warranty.
CAUTION
Drinking water quality must be in accordance with the
Decree of Drinking
Water
(Ur.l. RS, No.19/04, 35/04, 26/06, 92/06, 25/09). This decree is in
accordance with the Decree of the Council 98/83/ES.
CAUTION
For proper functioning of the active corrosive protection the buffer tank for DHW
has to be filled with water with the conductivity of at least 200 µS.
