TECH i-1 CWU weather-compensated heating circuit controller – mixing valve + DHW pump

Product description

The weather-compensated heating circuit controller TECH i-1 CWU (EU-i-1 DHW) It controls a 3/4-way mixing valve including a valve pump and an additional hot water pump. Via an outdoor sensor (weather compensation), weekly program, and room thermostat connection, it maintains a stable flow temperature and enables... Backflow protection On the boiler. Ideal for modernization and new construction – for private homeowners as well as for installers.

Highlights

• Stepless valve control + pump control (heating circuit pump/valve pump, DHW pump)
• Hot water control: Setpoint 40–70 °C, Hysteresis adjustable
• Valve operating modes: radiator circuit, underfloor heating, return protection
• Expandable up to 3 mixing valves (via add-on modules)
• Optional remote access possible via add-on module

Areas of application

• Suitable for
  • Heating systems with 3-/4-way mixing valve (radiators or underfloor heating)
  • Boiler/buffer systems where backflow protection is required
  • Hot water storage tank with separate charging pump (circulation/charging pump depending on the system)
• Not suitable for
  • Systems without a mixing valve
  • Consumers at the exits with > 0.5 A Load (per output)
  • Pure 24V systems without a 230V power supply

Technical data

• Supply: 230 V ±10%/50 Hz – Standard mains connection in the heating sector
• Own consumption: 3 W – very low power consumption in continuous operation
• Maximum output load: pump 0.5 A, valve 0.5 A – maximum switching/control load per output
• Potential-free contact: 230 V AC 0.5 A (AC1)/24 V DC 0.5 A (DC1) – e.g. for enabling/requesting external components
• Temperature ranges:
  • Device: 5–50 °C (Vicinity)
  • Sensor: -30…99 °C (Measuring range)
  • Measurement accuracy: ±1 °C
• Dimensions: 110 × 163 × 57 mm – compact wall mounting possible
• Security: 1.6 A – Device protection via fuse

Scope of delivery

• Heating circuit controller with LCD display (wall-mounted housing)
• Temperature sensors: Boiler/flow, valve/return, outside temperature, hot water
• User manual

Conclusion

The TECH i-1 CWU is a compact, practical solution for weather-compensated control a mixing circuit plus hot waterWith its weekly program, sensors and backflow protection function, it is suitable for both private homes and professional installations.