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.
VBus®Touch
A new dimension in system monitoring - nominated for the Intersolar Award 2010 in the 'solar thermal technology' category!
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.![]()
The new DeltaSol® BX
Available now...
The DeltaSol® family has once again grown – the DeltaSol® BX is now available for purchase. The BX impresses with its extra-large display and its intuitive operating concept. Pre-defined basic systems for a range of one- and two-store system layouts can be extended by a number of different functions, such as the thermal disinfection, the heat dump option, the drainback option or the cooling functions.
Additionally, the BX offers optional connections for Grundfos Direct Sensors and enables the connection and speed control of high-efficiency pumps as well as the data logging onto SD memory cards. Via the integrated RESOL VBus®, different accessories can be connected.
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. Particularly important for the American market:
the AL already is CTUVus-certified.
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. US version available since mid-November, other versions as of spring 2010.


