General requirements
Instructions for installation and servicing ecoTEC 839592_13
19
3
Inform the operator of the necessary measures in case
you have used any of these additives.
Inform the operator of the required procedures for frost
protection.
Observe the applicable national regulations and
technical standards for the treatment of filling and
top-up water.
Provided the national regulations and technical
standards do not specify any higher requirements, the
following applies:
You must treat the heating water
- if the total volume of filling and top-up water
exceeds thrice the nominal volume of the heating
system over the service life of the system
or
- if the limits given in the following tables are not
adhered to.
Total heating
output
Total hardness at 20 l/kW
for the smallest boiler heating
surface
2)
Total hardness at > 20 l/kW
< 50 l/kW for the smallest boiler
heating surface
2)
Total hardness at > 50 l/kW
for the smallest boiler heating
surface
2)
kW
mol/m
3
mol/m3
mol/m
3
50
No requirement or
3
1)
2
0,02
50 to
200
2
1,5
0,02
200 to
600
1,5
0,02
0,02
600
0,02
0,02
0,02
1) with systems equipped with wall-hung boiler and systems with electric heating elements
2) of the specific system volume (nominal capacity in litres/heating output; in case of multiple boiler systems the lowest individual hea-
ting output should be used)
These data only apply up to 3x the system volume for filling and top-up water. Once this triple system volume is exceeded, the water
will have to be treated exactly the same as in case of exceeding the limit values given in Table 3.6 (softening, desalination, hardness
stabilisation and desludging).
Table 3.5 Guidelines for the heating water: Water hardness
Heating water qua-
lities
Unit
Low-salt
saline
Electric conductivity
at 25 °C
S/cm
100
100-1500
Appearance
Free of sedimentary substances
pH-value at 25 °C
8,2-10,0
1)
8,2-10,0
1)
Oxygen
mg/L
0,1
0,02
1) With aluminium and aluminium alloys, the ph value range is
restricted from 6.5 to 8.5.
Table 3.6 Guidelines for heating water: Salinity
Summary of Contents for ecoTEC plus
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