RESOL offers a range of solutions for the control of DHW exchange modules. The new controller platform is equipped with an enhanced and faster control algorithm and enables the precise and energy-effi cient control of the draw-off temperature. In order to achieve the best possible control quality, our laboratories run a number of dimensioning tests and check measurements. Classifi cation of control quality is conducted on the basis of research results of the Rapperswil Institute for Solar Technology and the Institute for Solar Energy Research in Hamelin (ISFH).

• Constantly high control quality by adaptation to the end user system by means of self-learning neural networks
• Customised control for systems with or without circulation
• Flexible circulation function for different user profi les, also available with thermal disinfection
• Reliable DHW heating even in the case of a fault condition
• Control of PWM and LIN bus pumps
• Adaptable to many commonly used flow rate sensors
• Commissioning menu for easy configuration
• Clear system graphic in the status menu
• Cascades of up to 4 DHW exchange controllers or stations
• (Connection to a building management system via Modbus / RTU)

The DeltaSol® MX Plus combines the functional range of the DeltaSol® MX with an integrated Web server. Configuration, function control and access to VBus.net can be carried out easily and conveniently on any mobile device via a Web interface. Interfaces such as LAN and Modbus RTU (optional) as well as WLAN functionality and a WLAN access point offer many connectivity options.

• 15 relay outputs and 15 inputs for Pt1000, Pt500 or KTY temperature sensors
• Up to 5 extension modules via VBus® (45 sensors and 40 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
• Cooling over the heating circuit with condensation detection
• Dew point calculation by means of the FRH(d) humidity sensor to avoid condensation
• Remote access to the heating circuits via the Web interface, room control unit(s) or the VBus®Touch HC App
• Integrated Web server for configuration and function control
• LAN interface, WLAN functionality, WLAN access point and optional Modbus RTU interface
• Easy access to VBus.net via the Web interface
• Operation via any mobile device
• Heat pump demand (optional)

– RESOL develops and produces the right controller to suit your heat interface unit, contact us! –
RESOL offers individual solutions for the control of OEM heat interface units. The DeltaTherm®HIU is a controller for heat interface units and can be used for heating circuit control as well as for DHW heating. The controller concept enables adaptation to the individual requirements. The graphic menu and pre-programmed functions ensure high operating comfort.

• Heating circuit control with DHW exchange switchover
• Return limitation, night correction, summer operation, etc.
• DHW with standby function
• Weather-compensated control or demand-based room control
• Control of PWM pumps and valves
• Adaptable to many commonly used flow rate sensors
• Remote access with a room control unit
• Data logging and firmware updates via SD card

The DeltaTherm® HC Plus can control 2 weather-compensated heating circuits and their backup heating demands. Additional DHW functions such as circulation or thermal disinfection, and the efficient implementation of further heat sources are possible. With extension modules, further heating circuits can be controlled. In summer, the heating circuits take over the demand-based cooling by means of a humidity sensor for dew point calculation.

• 2 mixed heating circuits with backup heating
• Cooling over the heating circuit with humidity sensor
• 11 pre-configured basic systems and numerous optional functions
• Up to 5 EM extension modules can be connected via the RESOL VBus®, up to 7 weather-compensated heating circuits
• Screed drying function
• Data logging, storing, easy transfer of controller adjustments prepared and firmware updates via SD card
• Modulating heating control with 0-10 V boiler demand
• Weather-compensated control with room influence or demand-based room control with up to 5 room temperature sensors
• Remote access with a room control unit

Whether in new or existing buildings, the DeltaTherm® PV MAX combines Power-to-Heat and heating control. It detects excess PV current reliably and calculates the power available. Furthermore, it distributes the current available in a modulating manner to up to 3 electric immersion heaters with a total power of 9000 W, controls an SG-ready heat pump and a charging station for electric vehicles as needed. Alternatively, electric heatings with room thermostat up to 9 kW can be controlled in a modulating manner. Numerous optional functions can be activated and heating circuits controlled with extension modules. 2 further loads with constant powers up to 30 kW can be controlled via auxiliary relays.

Customer examples on www.VBus.net

• Suitable for all grid-connected PV systems
• Maximisation of self-consumption
• Household current priority
• Stepless control of up to 3 electric immersion heaters
• Stepless control of electric heatings (alternatively)
• Control of a heat pump
• Control of a wallbox
• Control of external loads up to 30 kW
• Time-controlled backup heating (with mains current)
• Optional functions via extension modules: e.g. solid fuel boiler, heat exchange
• Smart Remote access (optional)
• Access to the VBus.net visualisation portal via LAN