Corrosion protection for heating systems
Protection against rust and sludge in heating systems
Since its foundation in 1991, elector has successfully used the method of electrochemical water treatment with a galvanic element for corrosion protection in heating systems.
elector reaction tanks for corrosion protection in heating systems are installed particularly in old underfloor heating systems which have to cope with the consequences of oxygen diffusion through underfloor heating pipes. Problems in the heating system, such as silted underfloor heating, rusting boilers, jammed fittings and pipe breakthroughs, can be reduced and even prevented with the appropriate water quality – electrochemical water treatment is a reliable method which effectively combats corrosion in the heating system.
However, the electrochemical process for heating protection is also ideally suited for the protection of more modern heating systems. Heating systems which are operated with low-salt water or at low temperatures often experience corrosion caused by too low a pH value. With the use of elector reaction tanks, which are also rightly called corrosion protection devices for heating systems, corrosion problems caused by too low a pH value can be prevented.
The improvement of the water quality through electrochemical water treatment takes place automatically, without the addition of chemical additives, enabling low-salt operation of the heating system at an ideal pH value.
The use of the technology used by elector corrosion protection devices for corrosion protection in heating systems is listed in recognised guidelines (VDI 2035, AGFW) and is even expressly recommended by the Swiss SWKI BT 102-01 guideline.

Reliable protection against corrosion in the heating system
Electrochemical heating water conditioning with the elector reaction tanks in combination with low-salt water is based on a water quality in which persistent corrosion and silting of the heating system are unlikely.
Electrochemical water treatment with elector offers:
- Cleaning of the system water by removing circulating impurities and thus, in the long run, clean and clear heating water with reduced risk of erosion corrosion,
- Reduced conductivity and overall hardness of the heating water, thus maintaining a low-salt operating mode with reduced risk of corrosion,
- A stable pH value >8.3 and thus a positive influence on the natural formation of surface layers,
- Continuous electrochemical oxygen consumption and venting, thus reducing the oxygen content in the entire system and reducing the risk of oxygen corrosion,
- Corrosion protection of the metals in the system by means of a water quality which provides positive support with regard to the natural formation of surface layers and passivation (corrosion protection).
Technical specifications elector XS5
Dimensions in mm | ||
---|---|---|
A | Tank diameter | 170 |
B | Total width | 310 |
C | Tank height | 300 |
D | Total height | 473 |
E | Tank bottom - middle inlet / outlet | 200 |
F | Height of ball valve | 90 |
G | Wall - middle inlet / outlet | 108 |
H | Wall - Tank | 20 |
I | Clearance upwards, min. | 200 |
Connection thread | 1" | |
Empty weight (without connection set) | 6,8 kg | |
Shipping weight | 11 kg |

Type | System volume (without buffer tank) | System volume estimated* | Assembly | Max. flow m3/h | Δp at ~max. flow [kPa] | Article no. |
---|---|---|---|---|---|---|
elector XS5 | 0,5 m3 | ~18,5 l/kW UFH ~ 12 l/kW Radiators | Wall - Full flow | 2,4 | 4,68 | 14010 |
*For old systems with a new heat generator, add approx. 20% to the heating capacity.
Application area | Water conditioning for ccorrosion protection in heating systems |
---|---|
Operating temperature | max. 90°C |
Operating pressure | 6 bar |
Test pressure | 10 bar |
Tank material | Stainless steel 1.4301 (V2A) |
Insulation | HT/ARMAFLEX 19 mm, stainless steel sheet metal jacket |
Scope of delivery |
|
Installation note | The device is installed in the full flow (flow or return flow). Please refer to the elector user manual. |
Technical specifications elector XS5-B
Dimensions in mm | ||
---|---|---|
A | Tank diameter | 170 |
B | Total width | 310 |
C | Tank height | 300 |
D | Total height | 473 |
E | Tank bottom - middle inlet / outlet | 200 |
F | Height of ball valve | 90 |
G | Wall - middle inlet / outlet | 108 |
H | Wall - Tank | 20 |
I | Clearance upwards, min. | 200 |
Connection thread | 1" | |
Empty weight (without connection set) | 6,8 kg | |
Shipping weight | 13 kg |

Type | System volume (without buffer tank) | System volume estimated* | Assembly | Regulated flow m3/h | Article no. | |
---|---|---|---|---|---|---|
elector XS5-B | 0,5 m3 | ~18,5 l/kW UFH ~ 12 l/kW Radiators | Wall-Bypass | 0,12 | 14010 |
*For old systems with a new heat generator, add approx. 20% to the heating capacity.
Application area | Water conditioning for corrosion protection in heating systems |
---|---|
Operating temperature | max. 90°C |
Operating pressure | 6 bar |
Test pressure | 10 bar |
Tank material | Stainless steel 1.4301 (V2A) |
Insulation | HT/ARMAFLEX 19 mm, stainless steel sheet metal jacket |
Scope of delivery |
|
Installation note | The device is installed in a bypass and the flow rate is to be regulated by 2 ltr/min. Please refer to the elector user manual. Depending on the hydraulic conditions, a feed pump, e.g. Wilo Stratos PICO 25 / 1-4 in control mode differential pressure constant, is necessary. |
Technical specifications elector S10-V
Dimensions in mm | ||
---|---|---|
A | Tank diameter | 233 |
B | Total width | 400 |
C | Tank height | 470 |
D | Total height | 625 |
E | Tank bottom - middle inlet / outlet | 320 |
F | Height of ball valve | 90 |
G | Wall - middle inlet / outlet | 138 |
H | Wall - Tank | 20 |
I | Clearance upwards, min. | 250 |
Connection thread | 1 1/4" | |
Empty weight (without connection set) | 11,3 kg | |
Shipping weight | 17 kg |

Type | System volume (without buffer tank) | System volume estimated* | Assembly | Max. flow m3/h | Δp at ~max. flow [kPa] | Article no. |
---|---|---|---|---|---|---|
elector S10-V | 1,5 m3 | ~18,5 l/kW UFH ~ 12 l/kW Radiators | Wall | 4,3 | 5,44 | 14020 |
*For old systems with a new heat generator, add approx. 20% to the heating capacity.
Application area | Water conditioning for corrosion protection in heating systems |
---|---|
Operating temperature | max. 90°C |
Operating pressure | 6 bar |
Test pressure | 10 bar |
Tank material | Stainless steel 1.4301 (V2A) |
Insulation | HT/ARMAFLEX 19 mm, stainless steel sheet metal jacket |
Scope of delivery |
|
Installation note | The device is installed in the full flow (flow or return flow). Please refer to the elector user manual. |
Technical specifications elector S10-B
Dimensions in mm | ||
---|---|---|
A | Tank diameter | 233 |
B | Total width | 400 |
C | Tank height | 470 |
D | Total height | 625 |
E | Tank bottom - middle inlet / outlet | 320 |
F | Height of ball valve | 90 |
G | Wall - middle inlet / outlet | 138 |
H | Wall - Tank | 20 |
I | Clearance upwards, min. | 250 |
Connection thread | 1 1/4" | |
Empty weight (without connection set) | 11,3 kg | |
Shipping weight | 18,5 kg |

Type | System volume (without buffer tank) | System volume estimated* | Assembly | Regulated flow m3/h | Article no. | |
---|---|---|---|---|---|---|
elector S10-B | 1,5 m3 | ~18,5 l/kW UFH ~ 12 l/kW Radiators | Wall - Bypass | 0,12 | 14040 |
*For old systems with a new heat generator, add approx. 20% to the heating capacity.
Application area | Water conditioning for corrosion protection in heating systems |
---|---|
Operating temperature | max. 90°C |
Operating pressure | 6 bar |
Test pressure | 10 bar |
Tank material | Stainless steel 1.4301 (V2A) |
Insulation | HT/ARMAFLEX 19 mm, stainless steel sheet metal jacket |
Scope of delivery |
|
Installation note |
The device is installed in a bypass and the flow rate is to be regulated by 2 ltr/min. Please refer to the elector user manual. Depending on the hydraulic conditions, a feed pump, e.g. Wilo Stratos PICO 25 / 1-4 in control mode differential pressure constant, is necessary. |
Technische Daten elector M25
Abmessung in mm | ||
---|---|---|
A | Durchmesser | 370 |
B | Breite inkl. Anschlussrohre | 437 |
C | Höhe gesamt | 880 |
D | Boden - Mitte Zulauf | 250 |
E | Boden - Mitte Auslauf | 550 |
F | Hinten - Mitte Anschluss | 280 |
G | Breite inkl. Kugelhahn | 650 |
H | Abstand Wand - Behälter | 59 |
I | min. Abstand | 400 |
Zulauf unten, Auslauf oben | 1" |

Typ | Anlagenvolumen (ohne Pufferspeicher) | Anlagenvolumen schätzen* | Montage | ~max. Durchfluss m3/h | Δp bei ~max. Durchfluss [kPa] | Artikel Nr. |
---|---|---|---|---|---|---|
elector M25 | 5 m3 | ~18,5 l/kW FBH ~ 12 l/kW Radiatoren | Wand oder Boden | 0,3 | -- | 14050 |
*Bei alten Anlagen mit neuem Wärmeerzeuger ca. 20% auf die Heizleistung hinzurechnen.
Einsatzbereich | Wasserkonditionierung zum Korrosionsschutz in Heizungsanlagen |
---|---|
Einsatztemperatur | max. 90°C |
Betriebsdruck | 3 bar |
Prüfdruck | 6 bar |
Behältermaterial | Edelstahl 1.4301 (V2A) |
Isolierung | Caruso-Iso-Bond schwer entflammbar, erfüllt die Bedingung B1 nach DIN 4102 - Teil 1, toxologisch unbedenklich nach Öko-Tex-Standard 100, UV-stabil und verrottungssicher, 100% recyclebar und umweltverträglich, sicher gegen Schimmelpilzbefall DIN IEC 68 - Teile 2-10, allergikerfreundlich |
Lieferumfang |
|
Installationshinweis | Das Gerät wird in einem Bypass (Nebenanschluss) mit einer auf 5 Liter/Minute einregulierten Durchströmung eingebaut. Bitte beachten Sie das elector-Nutzerhandbuch. Je nach hydraulischen Gegebenheiten ist eine Zuführpumpe, z.B. Wilo Stratos PICO 25/1-4 in Regelungsart Differenzdruck konstant, notwendig. |
Technische Daten elector L60
Abmessung in mm | ||
---|---|---|
A | Durchmesser | 370 |
B | Breite inkl. Anschlussrohre | 437 |
C | Höhe gesamt | 1050 |
D | Boden - Mitte Zulauf | 250 |
E | Boden - Mitte Auslauf | 700 |
F | Hinten - Mitte Anschluss | 280 |
G | Breite inkl. Kugelhahn | 650 |
H | Abstand Wand - Behälter | 59 |
I | min. Abstand | 400 |
Zulauf unten, Auslauf oben | 1" |

Typ | Anlagenvolumen (ohne Pufferspeicher) | Anlagenvolumen schätzen* | Montage | ~max. Durchfluss m3/h | Δp bei ~max. Durchfluss [kPa] | Artikel Nr. |
---|---|---|---|---|---|---|
elector L60 | 10 m3 | ~18,5 l/kW FBH ~ 12 l/kW Radiatoren | Wand oder Boden | 0,6 | -- | 14060 |
*Bei alten Anlagen mit neuem Wärmeerzeuger ca. 20% auf die Heizleistung hinzurechnen.
Einsatzbereich | Wasserkonditionierung zum Korrosionsschutz in Heizungsanlagen |
---|---|
Einsatztemperatur | max. 90°C |
Betriebsdruck | 3 bar |
Prüfdruck | 6 bar |
Behältermaterial | Edelstahl 1.4301 (V2A) |
Isolierung | Caruso-Iso-Bond schwer entflammbar, erfüllt die Bedingung B1 nach DIN 4102 - Teil 1, toxologisch unbedenklich nach Öko-Tex-Standard 100, UV-stabil und verrottungssicher, 100% recyclebar und umweltverträglich, sicher gegen Schimmelpilzbefall DIN IEC 68 - Teile 2-10, allergikerfreundlich |
Lieferumfang |
|
Installationshinweis | Das Gerät wird in einem Bypass (Nebenanschluss) mit einer auf 10 Liter/Minute einregulierten Durchströmung eingebaut. Bitte beachten Sie das elector-Nutzerhandbuch. Je nach hydraulischen Gegebenheiten ist eine Zuführpumpe, z.B. Wilo Stratos PICO 25/1-4 in Regelungsart Differenzdruck konstant, notwendig. |
Technische Daten elector XL130
Abmessung in mm | ||
---|---|---|
A | Durchmesser | 495 |
B | Breite inkl. Anschlussrohre | 564 |
C | Höhe gesamt | 1180 |
D | Boden - Mitte Zulauf | 318 |
E | Boden - Mitte Auslauf | 818 |
F | Hinten - Mitte Anschluss | 280 |
G | Breite inkl. Kugelhahn | 650 |
H | min. Abstand | 500 |
Zulauf unten, Auslauf oben | 1" |

Typ | Anlagenvolumen (ohne Pufferspeicher) | Anlagenvolumen schätzen* | Montage | ~max. Durchfluss m3/h | Δp bei ~max. Durchfluss [kPa] | Artikel Nr. |
---|---|---|---|---|---|---|
elector XL130 | 30 m3 | ~18,5 l/kW FBH ~ 12 l/kW Radiatoren | Boden | 1,2 | -- | 14070 |
*Bei alten Anlagen mit neuem Wärmeerzeuger ca. 20% auf die Heizleistung hinzurechnen.
Einsatzbereich | Wasserkonditionierung zum Korrosionsschutz in Heizungsanlagen |
---|---|
Einsatztemperatur | max. 90°C |
Betriebsdruck | 10 bar |
Prüfdruck | 13 bar |
Behältermaterial | Edelstahl 1.4301 (V2A) |
Isolierung | Caruso-Iso-Bond schwer entflammbar, erfüllt die Bedingung B1 nach DIN 4102 - Teil 1, toxologisch unbedenklich nach Öko-Tex-Standard 100, UV-stabil und verrottungssicher, 100% recyclebar und umweltverträglich, sicher gegen Schimmelpilzbefall DIN IEC 68 - Teile 2-10, allergikerfreundlich |
Lieferumfang |
|
Installationshinweis | Das Gerät wird in einem Bypass (Nebenanschluss) mit einer auf 20 Liter/Minute einregulierten Durchströmung eingebaut. Bitte beachten Sie das elector-Nutzerhandbuch. Je nach hydraulischen Gegebenheiten ist eine Zuführpumpe, z.B. Wilo Stratos PICO 25/1-4 in Regelungsart Differenzdruck konstant, notwendig. |
Technische Daten elector XL+
Abmessung in mm | XL+300 | XL+500 | |
---|---|---|---|
A | Höhe gesamt | 1837 | 1877 |
B | Durchmesser | 750 | 850 |
C | Revisionsöffnung | 300 | 300 |
D | Boden - Zulauf | 350 | 375 |
E | Boden Auslauf | 1375 | 1400 |
Zulauf / Auslauf | 1 1/4" | 1 1/2" |

Typ | Anlagenvolumen (ohne Pufferspeicher) | Anlagenvolumen schätzen* | Montage | ~max. Durchfluss m3/h | Δp bei ~max. Durchfluss [kPa] | Artikel Nr. |
---|---|---|---|---|---|---|
elector XL+300 | 80 m3 | ~18,5 l/kW FBH ~ 12 l/kW Radiatoren | Boden | 3 | -- | 14080 |
elector XL+500 | 150 m3 | 6 | -- | 14090 |
*Bei alten Anlagen mit neuem Wärmeerzeuger ca. 20% auf die Heizleistung hinzurechnen.
Bei großen Heizungsanlagen, wie Nahwärmenetze, ist ggf. die Installation mehrerer elector-Reaktionsbehälter über das Netz verteilt sinnvoll.
Einsatzbereich | Wasserkonditionierung zum Korrosionsschutz in Heizungsanlagen |
---|---|
Einsatztemperatur | max. 90°C |
Betriebsdruck | 10 bar |
Prüfdruck | 13 bar |
Behältermaterial | Edelstahl 1.4301 (V2A) |
Isolierung | Schaumisolierung mit PVC-Außenhülle in silber, Stärke 100 mm |
Lieferumfang |
|
Installationshinweis | Die Reaktionsbehälter werden in einem Bypass (Nebenanschluss) mit einer auf 20 Liter/Minute (XL+300) bzw. 100 Liter/Minute (XL+500) einregulierten Durchströmung eingebaut. Bitte beachten Sie das elector-Nutzerhandbuch. Je nach hydraulischen Gegebenheiten ist eine Zuführpumpe notwendig. |
elector - Corrosion protection for heating systems
- Leaflet corrosion protection in heating systems
- elector - Users guide
- Datasheet elector XS5
- Datasheet elector XS5-B
- Datasheet elector S10-V
- Datasheet elector S10-B
- Datasheet elector M25
- Datasheet elector L60
- Datasheet elector XL130
- Datasheet elector XL+