RESOL is a German brand and a global leader in innovative control technology for solar thermal and heating systems. With over 40 years of experience, we specialize in designing and manufacturing advanced controllers, data loggers, and accessories to maximize energy efficiency and system performance. Renowned for our precision engineering and sustainable approach, RESOL empowers homes and businesses with intelligent solutions for renewable energy management. Trust RESOL for cutting-edge technology that drives the transition to a greener future.
No auxiliary electric energy required
Continuously adjustable between 35 … 65 °c
Installation in the hot water fl ow, in systems with stub or circulation pipes
Screwed or soldered connections possible
Any installation position possible
Resol VA32 3-way montor valve for solar thermal systems
Resol Switching motor valve VA32 changeover valve for zoned
switching of individual system parts Protective insulated drive housing
Easy manual hand adjustment for commissioning or emergency operation
Control possible via two-point contact or via potential-free switching contact
The limit switch signal output in valve position can be used for control purposes (max. 1A)
No flow reduction, full flow Operating time: 18 s, setting angle 90° Operating mode: open/closed
Valve
VA20-NO, with actuator normally open
Drainback option
Heat quantity measurement
Function control
Commissioning menu
Unit °C and °F selectable
HE pump control via adapter
Robust and durable
Easy handling and cleaning
Focus on ergonomics
For water and water-glycol mixtures
High-class design and quality
14 relay outputs and 12 inputs for Pt1000, Pt500 or KTY temperature sensorsUp to 5 extension modules via RESOL VBus® (45 sensors and 39 relays in total)
Inputs for analogue and digital Grundfos Direct Sensors™ as well as for FRH and FRHd humidity sensors
Integrated control of up to 4 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 by means of a dew point switch
Dew point calculation by means of the FRH(d) humidity sensor to avoid condensation
Simplified timer, 0-10 V boiler control and DHW preheating
Simultaneous visualisation of collector and store temperature as well as heat quantity
One 6-digit and two 4-digit 7-segment LED displays
Simple connection via RESOL VBus®
°C and °F versions available
Power supply via RESOL VBus®
Outstanding design
Customised sensor and relay allocation possible on request
