The TECH EU-i-1 is a versatile mixing valve controller for precise temperature control of heating circuits, underfloor heating systems, and return temperature protection systems.
Suitable for single-family homes and heating systems with three- or four-way mixing valves – ideal for professional installers and demanding operators.
Highlights / Benefits
⭐ Flexible valve control – suitable for heating circuits, underfloor heating, return temperature protection, and cooling operation
⭐ Weather-compensated & time-controlled – integrated weather program and weekly schedule
⭐ High system protection – return temperature protection and boiler protection against corrosion and overheating
⭐ Modular expandability – control of up to three mixing valves possible
⭐ Intuitive operation – clear LCD display and straightforward menu structure
Detailed description
Application area & target group
The TECH EU-i-1 mixing valve controller was designed for modern heating systems that require precise control of the flow or return temperature. It is suitable for central heating systems, underfloor heating systems, and systems with return temperature protection, and is primarily used in new builds and renovations.
Everyday benefits
Through continuous control of the mixing valve, the controller ensures stable temperatures and increases comfort in the building. At the same time, it reliably protects the heat generator from excessively low return temperatures and from overheating.
Technology & equipment
The controller supports three- and four-way mixing valves including the valve pump. Up to two additional valves can be integrated via optional expansion modules. Multiple temperature sensors (boiler, valve, return, outdoor) enable precise control in various operating modes.
Efficiency & environment
Thanks to weather-compensated control and weekly programs, the TECH EU-i-1 adjusts the heating output to meet demand. This reduces unnecessary energy consumption and supports efficient, material-friendly system operation.
Compatibility & system integration
The controller is compatible with TECH room thermostats (RS communication or two-point), optional internet and GSM modules, as well as additional TECH valve modules. Integration into existing heating systems is flexible.
Technical data
| Feature |
Value |
| Manufacturer |
TECH Controllers |
| Model |
EU-i-1 |
| Product type |
Mixing valve controller |
| Supply voltage |
230 V ±10 % / 50 Hz |
| Power consumption |
max. 4 W |
| Ambient temperature |
5 – 50 °C |
| Measurement accuracy |
±1 °C |
| Temperature range sensors |
−30 to +99 °C |
| Output load |
0.5 A per output |
| Fuse |
1.6 A |
| Display |
LCD |
| Mounting |
Wall mounting |
| Standards |
CE, ErP, RoHS |
Scope of delivery
Accessories / Recommendation (Cross-selling)
-
TECH valve modules i-1 / ST-61v4 for expansion to additional heating circuits
-
TECH outdoor temperature sensor
-
TECH room thermostats with RS communication
-
TECH internet module ST-505
-
TECH GSM module ST-65
You can find suitable products in the categories Control technology, Room thermostats and Accessories at gemashop.de.
Installation & safety instructions
-
Installation and commissioning must be carried out exclusively by a qualified specialist company
-
Always disconnect the power supply before working on the device
-
Connect sensors and valve actuators according to the manufacturer's instructions
-
Do not operate the device in damp or potentially explosive environments
FAQ
Which valve types is the TECH EU-i-1 suitable for?
For three- and four-way mixing valves in heating, underfloor heating, and return temperature protection systems.
Can the controller manage multiple heating circuits?
Yes, with optional expansion modules, up to three mixing valves can be controlled.
Does the controller support weather-compensated control?
Yes, an outdoor sensor enables operation with a heating curve.
Is a weekly program integrated?
Yes, various weekly programs with temperature deviations are available.
Can a room thermostat be connected?
Yes, both TECH room thermostats with RS communication and two-point thermostats.
Is remote monitoring possible?
Optionally via Internet or GSM module from TECH Controllers.
Conclusion
The TECH EU-i-1 mixing valve controller is a reliable solution for precise temperature control, high system protection, and flexible expandability in modern heating systems. Order now and control heating technology efficiently.
