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elector – Electrochemical Water Treatment for Heating Systems
Chapter 2 - Selection Process
2.1 Selection of the Correct Elector Device
The selection of an elector reaction device is based on the system volume of the heating system. In case of
high degree of oxygen ingress we always recommend choosing the next larger version.
Article no.
elector Type
Installation
System Volume
*max.
14010
elector XS5
Full flow
0,5 m
3
14020
elector S10-V
Full flow
1,5 m
3
14040
elector S10-B
Bypass
1,5 m
3
14050
elector M25
5,0 m
3
14060
elector L60
10 m
3
14070
elector XL130
30 m
3
14080
elector XL+300
80 m
3
14090
elector XL+500
150 m
3
2.2 Estimation of the System Volume in Heating Systems
The exact system volume in heating systems is not known in many cases. The system volume can be estimated
under consideration of the heating power. There is an average of <20 liters water volume per kW heating power
at present heating systems without buffer.
Based on experiences the volume of underfloor heating systems is <18.5 l/kW, for radiators <12.1 l/kW and
for panel radiators <8.5 l/kW including riser tubes and volume of the heater.
Please pay attention at old systems with new heaters that these modern components heat-up the same water
volume by less energy consumption. You should consider 15 – 20% for the estimation of the system volume.
2.3 Water Volume of Buffers
Amongst other factors the size of the elector is influenced by the assumable oxygen ingress within the whole
system which appears mainly at fittings, plastic parts, regulation valves an other parts. The volume of an
buffer made from steel is not considered as there is normally no measurable oxygen ingress at such parts.
For systems with a water volume of >50 l/kW a bigger elector reduces the treatment time of the total system
volume.
You should always select the next bigger elector in border-cases or whenever you are not sure about the exact
system volume.
2.4 Local and District Heating Networks
In widely spread pipe networks, the entire system volume can be divided into several elector reaction devices.
These are installed distributed throughout the system to ensoure ideal water treatment in the whole system.
For example, one elector can be connected directly to a buffer tank in the central heating system and more
elector devices in the sub-manifold stations of the heating system.
