The new system controller DeltaSol® BX Plus
The new member of the DeltaSol® family
The new member of the DeltaSol® family is the BX Plus. The system controller is equipped with five relay outputs and nine sensor inputs, connections for digital Grundfos Direct Sensors™, and PWM outputs for speed control of energy-saving high-efficiency pumps. With the integrated SD memory card slot, logging system data and updating the firmware is possible. Additional accessories as well as up to two EM extension modules, extending the controller by six sensor inputs and five relay outputs each, can be connected via the RESOL VBus®.
Third time's a charm
design award hat trick for the SBS 2000
New catalogue is now online
featuring all new products
All new products in our portfolio are now featured in detail: the DL3 Datalogger, the DeltaSol® BX L and BX Plus system controllers as well as the new FlowSol® pump stations with their extensive range of accessories, such as the ALS15 discharge hose. As an extra, you’ll find the latest information such as the customisation possibilities for our products.
DeltaSol® BX L system controller
System controller for 2- and 3-store solar systems
The DeltaSol® BX L is a system controller with 9 pre-defined basic system layouts for 2- and 3-store solar systems. They can be individually extended through a range of additional functions, such as: a thermal disinfection function, a freely adjustable DT function and a heat dump function. 
The BX L is equipped with an extra large display, a RESOL VBus® interface and an SD memory card slot for data logging.
The FlowSol® family is growing!
FlowSol® B – even more versatility!
The newly developed FlowSol® B is available in many combinations of three different controller families and three different pumps. The station is also equipped with an insulation casing featuring an innovative hinged controller panel, allowing for a quick and easy access to the hydraulics without dismounting the controller.
DeltaSol® MX
The all-rounder...
The DeltaSol® MX is a system controller of the latest generation and offers almost unlimited possibilities for planning and controlling solar thermal systems. The controller offers easy combination and parameterisation of pre-programmed function blocks for several millions of hydraulic variants.
Its intuitive user guidance sets a new benchmark for user friendly operation. The SD memory card slot enables integrated data logging, transfer of adjustments and firmware updates – even without a PC. With the connection of up to 5 extension modules via RESOL VBus® the DeltaSol® MX can control 45 sensors and 39 relays in total. Additional functions, such as the drainback option, broaden the range of application.
Click here to download the new DeltaSol MX firmware
VBus®Touch
A new dimension in system monitoring
Visualisation was yesterday – VBus®Touch is now!
The new RESOL app for the Apple iPad makes your solar yield palpable – worldwide. A touch of your finger is all you need to view detailed temperature charts, generate yield balances and monitor your system‘s status. The VBus®Touch software is of course compatible with the iPhone and the iPod touch as well.
To visualise your individual system with VBus®Touch, a RESOL controller with VBus® data interface (e. g. DeltaSol® BX), connected to the Internet via a DL2 datalogger, is required. 
The basic version of the VBus®Touch app is available for download free of charge in the App Store. More features and extensions are under way.
DeltaSol® AL
Simplicity and convenience - all in one solar controller
RESOL has once again extended its successful DeltaSol® family of solar controllers and presents the DeltaSol® AL. With a brand new design, the controller offers all vital functions required for a standard solar thermal system, a System-Monitoring-Display and a RESOL VBus®.Operation and function control are as easy as usual and the controller's standby power consumption adds up to only 0.7 W.
The DeltaSol® BS series
With a range of new functions
Our DeltaSol BS® controller series now comes with a newly cTUVus certified hardware and offers a range of new functions, including a certified pump speed control.
Catalogues & price lists
Catalogue (PDF)Please give us your feedback!
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