Technical data

Installation and maintenance instructions ecoTEC exclusive 0020017768_0522
6 Start-up
6.1 Filling the installation
Mixing additives with the heating water can result in
material damage. However, up to now, no
incompatibility with Vaillant appliances has been
detected with proper use of the following products.
• When using additives, follow the additive
manufacturer‘s instructions without exception.
Vaillant accepts no liability for the compatibility of any
additive or its effectiveness in the entire heating
system.
Additives for cleaning purposes
(subsequent flushing required)
- Fernox F3
- Jenaqua 200
- Jenaqua 300
- Jenaqua 400
- Sentinel X 300
- Sentinel X 400
Additives intended to remain permanently in the
system
- Fernox F1
- Fernox F2
- Jenaqua 100
- Jenaqua 110
- Sentinel X 100
- Sentinel X 200
Additives for frost protection intended to remain
permanently in the system
- Fernox Antifreeze Alphi 11
- Sentinel X 500
• 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.
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
heating 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 6.2 (softening, desalination,
hardness stabilisation and desludging).
Table 6.1 Guidelines for the heating water: Water hardness
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.
Heating water
qualities
Unit Low-salt saline
Electric conductivity
at 25 °C
μS/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 6.2 Guidelines for heating water: Salinity
a
Caution!
Aluminium corrosion resulting in leakages
caused by unsuitable heating water!
Unlike materials such as steel, cast iron or
copper, aluminium is reactive to alkalised
heating water (pH-value > 8,5) which results in
significant corrosion.
With aluminium, ensure that the pH value of
the heating water ranges between 6.5 up to a
maximum of 8.5.
6 Start-up