TECH EU-21 pump control heating system circulation pump

2025-04-16T12:33:17+02:00

Vendor: Master
Type: Pump control
Price: 55.00

The TECH EU-21 is a compact pump controller for the automatic control of circulation pumps in heating systems. It ensures efficient pump operation, reduces unnecessary power consumption, and protects the system through integrated safety functions.

Highlights & Advantages

⭐ Automatic pump control – switching on and off depending on the boiler temperature
⭐ Energy-saving operation – prevents unnecessary running times of the circulation pump.
⭐ Integrated frost protection – protects the heating system at low temperatures
⭐ Anti-stop function – prevents the pump from seizing up during extended periods of inactivity.
⭐ Easy to use – clear display with plus, minus and menu buttons.

Detailed description

Area of ​​application & Target audience

The TECH EU-21 pump controller is designed for heating systems with water-based heat generators. It is suitable for both residential heating systems and smaller commercial applications where reliable, temperature-dependent control of the circulation pump is required.

Everyday benefits

By automatically switching the pump on and off only when needed, the EU-21 reduces unnecessary operating times. This lowers energy consumption and extends the lifespan of the connected circulation pump. The manual operating mode also allows for easy functional testing of the pump.

Technology & equipment

The controller operates based on temperature via an external sensor mounted at the boiler outlet. The desired switch-on temperature can be flexibly set. Additionally, a hysteresis can be defined to prevent frequent switching on and off.

Efficiency & Security

An integrated frost protection feature automatically switches the pump on as soon as the sensor temperature drops below 5 °C. The anti-stop function automatically activates the pump for one minute every 10 days to prevent blockage. Both functions can be deactivated in the service menu.

compatibility & System integration

The TECH EU-21 can be operated either as a pump controller or as a thermostat. This allows for flexible integration into various heating systems. It is wall-mounted with a fixed 230 V mains connection.

Technical data

feature | Value
Manufacturer | TECH Controllers
Model | EU-21
Mains voltage | 230 V ±10 %/50 Hz
Power consumption | 2 W
Operating temperature | 5–50 °C
Max.Pump output load | 0.5 A
Temperature measurement accuracy | 1 °C
Temperature range sensor | -30 to 99 °C
Security | 1.6 A

Scope of delivery

TECH EU-21 Pump Controller

temperature sensor

User manual

Assembly instructions

Accessories/Recommendation

Circulation pumps for heating systems

Submersible or surface-mounted sensor

Pump connection sets

Replacement sensors and fuses

You can find suitable products in the relevant categories on gemashop.de.

Assembly & Safety instructions

Installation and commissioning must be carried out exclusively by a qualified specialist company. Before any work is done on the control unit, it must be de-energized. The temperature sensor must not be immersed in liquids and must be insulated against external influences.

FAQ

What controls TECH EU-21?
It automatically controls a circulation pump in a heating system depending on the temperature.

Can the pump be switched on manually?
Yes, in manual mode the pump can be switched on and off by pressing a button.

What does the anti-stop function do?
It prevents the pump from becoming blocked by regularly switching it on automatically.

Is antifreeze integrated?
Yes, the pump is automatically switched on at temperatures below 5 °C.

Can the EU-21 also function as a thermostat?
Yes, the operating mode can be switched between pump control and thermostat.

What voltage is required?
The controller is operated with 230 V mains voltage.

Conclusion

The TECH EU-21 is a reliable and efficient pump controller for heating systems. It combines ease of use with essential safety features and helps reduce operating costs. Order now and optimize your heating system.