The TECH i-1 CWU is a versatile heating controller for precise control of three- or four-way mixing valves. It is ideal for heating systems with radiators, underfloor heating, or return temperature protection and offers extensive control and protection functions for efficient and safe operation.
Highlights & Benefits
⭐ Precise control of mixing valves for constant flow temperatures
⭐ Integrated return and boiler protection for system safety
⭐ Weather-compensated control with heating curve and weekly program
⭐ Control of heating and domestic hot water pumps possible
⭐ Expandable to up to three mixing valves via expansion modules
Detailed Description
Application Area & Target Group
The TECH i-1 CWU was developed for modern heating systems in single-family and multi-family homes. It is suitable for radiator circuits, underfloor heating, and systems with return temperature protection, and can be used both in new constructions and renovations.
Everyday Benefits
By automatically adjusting the flow temperature to the outdoor temperature, the controller ensures consistent heating comfort and reduces unnecessary energy consumption. Weekly programs enable demand-based temperature control over the course of the day and week.
Technology & Equipment
The controller controls three- or four-way mixing valves including the valve pump and domestic hot water pump. Multiple temperature sensors (boiler, valve, return, outdoor, domestic hot water) enable precise monitoring of the system. A clear LCD display and a clear menu structure facilitate operation.
Efficiency & System Protection
Functions such as boiler protection, return temperature protection, and maximum floor temperature protect the heating system from damage caused by temperatures that are too low or too high. The anti-seize function of the pumps prevents them from seizing up outside the heating season.
Compatibility & System Integration
The TECH i-1 CWU can be expanded with room thermostats (RS communication or two-point), GSM modules, and internet modules. Additionally, up to two further mixing valves can be controlled via expansion modules.
Technical Data
| Feature |
Value |
| Manufacturer |
TECH Controllers |
| Model |
i-1 CWU |
| Product Type |
Mixing valve controller |
| Supply Voltage |
230 V ±10 % / 50 Hz |
| Power Consumption |
3 W |
| Operating Temperature |
5–50 °C |
| Max. Load Pump Output |
0.5 A |
| Max. Load Valve Output |
0.5 A |
| Potential-Free Contact |
230 V AC / 0.5 A or 24 V DC / 0.5 A |
| Temperature Range Sensors |
−30 to 99 °C |
| Fuse |
1.6 A |
| Standards |
CE, ErP, PN-EN IEC 60730 |
Scope of Delivery
Accessories / Recommendation
-
Outdoor temperature sensor
-
Room thermostat TECH RS
-
Internet module TECH ST-505
-
GSM module TECH ST-65
-
Expansion modules for additional mixing valves
(Matching products in the gemashop.de range)
Installation & Safety Instructions
Installation and commissioning may only be carried out by a qualified specialist company. Before working on the electrical installation, disconnect the device from the power supply. Sensors must be positioned correctly in accordance with the mounting instructions.
FAQ
Which valves is the TECH i-1 CWU suitable for?
For three-way and four-way mixing valves in heating systems.
Can the controller manage underfloor heating?
Yes, with a special underfloor mode and maximum temperature limit.
Is weather-compensated control possible?
Yes, with an outdoor sensor and adjustable heating curve.
Can domestic hot water be prioritized?
Yes, via various pump operating modes including boiler priority.
Is remote monitoring possible?
Optionally via GSM or internet modules.
How many valves can be controlled?
One integrated valve as well as up to two additional valves via expansion modules.
Conclusion
The TECH i-1 CWU is a powerful mixing valve controller for demanding heating systems and offers extensive control, protection, and expansion functions for efficient and safe operation.