Viega
2 relay outputs, 4 temperature sensor inputs
2 PWM outputs for the speed control of high-efficiency pumps
Control of an electronic mixer for the return mixing function
Heating backup
Heat exchange function
Thermostatic backup heating
Heat pump demand (optional)
5 relay outputs and 8 inputs for Pt1000, Pt500 or KTY temperature sensors
Up to 2 extension modules via RESOL VBus® (21 sensors and 15 relays in total)
Inputs for digital Grundfos Direct SensorsTM as well as for FRHd humidity sensors
Integrated control of up to 2 high-efficiency pumps via PWM outputs
Data logging, storing, easy transfer of controller adjustments prepared and firmware updates via SD card
Cooling over the heating circuit with condensation detection
Dew point calculation by means of the FRHd humidity sensor to avoid condensation
4 relay outputs and 5 Pt1000 temperature sensor inputs
2 inputs for analogue Grundfos Direct Sensors™
2 PWM outputs for the speed control of high-efficiency pumps
26 basic systems to choose from
Drainback option
Thermal disinfection function, heat dump function
Selection between SI and imperial units
Heat pump demand (optional)
Robust and durable
Easy handling and cleaning
Focus on ergonomics
For water and water-glycol mixtures
High-class design and quality
