Solar and differential temperature controllers
Solar controller DeltaSol® BX L
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.
- 4 relay outputs / 5 sensor inputs
- RESOL VBus®
- Data logging onto SD memory card
- Extra large display
- Thermal disinfection function
- Heat dump function
- Freely adjustable ΔT function
- Time-controlled thermostat function
- Energy-effi cient switching-mode power supply
Solar controller DeltaSol® MX
The DeltaSol® MX is equipped with 14 relay outputs for the speed control of energy-saving high-efficiency pumps; for speed control of standard pumps, the PWM outputs can be converted into 0-10 V signal outputs. Additionally, the controller has one frequency input, three impulse inputs as well as a range of different sensor inputs. Up to five extension modules can be connected via the RESOL VBus®. The integrated SD memory card slot enables an easy datalogging to an SD memory card as well as a quick and effortless transfer of logged system data to a PC. The large full graphic display allows the direct display of balance and progression diagrams. Pre-defined functions allow easier parameterization of the system; functional additions such as a drainback option broaden the range of applications.
- Full graphic display
- 14 relay outputs
- 15 sensor inputs
- Inputs for Grundfos Direct Sensors™
- Speed control of high-efficiency pumps
- Datalogging onto SD memory card
- Drainback option
- RESOL VBus®
- Energy-saving switching-mode power supply
Solar controller DeltaSol® BX
The DeltaSol® BX is equipped with four relay outputs as well as two PWM outputs for the speed control of energy-saving high-efficiency pumps. Additionally, the controller is equipped with five Pt1000 sensor inputs, two analog Grundfos sensor inputs, an impulse input as well as a supplemental L’-output for the connection of an actuator. The integrated SD memory card slot enables an easy datalogging to an SD memory card as well as a quick and effortless transfer of logged system data to a PC. The extra-large display vouches for a precise visualization of the system status. Pre-defined functions allow easier parametrization of the system; functional additions such as a drainback option broaden the range of applications. Of course, the DeltaSol® BX is also equipped with a RESOL VBus®.
- Extra large display
- 4 relay outputs (3 speed controlled)
- 7 sensor inputs
- Inputs for Grundfos Direct SensorsTM
- Speed control of high-efficiency pumps
- Datalogging onto SD memory card
- Drainback option
- Heat dump function
- RESOL VBus®
- Energy-efficient switch-mode power supply
Solar controller DeltaSol® AL
The DeltaSol® AL solar controller is a temperature differential controller that offers all vital functions for a standard solar thermal system. The controller is equipped with the comprehensible System-Monitoring-Display, which visualises the system parameters quickly and easily. For data communication, the controller has a RESOL VBus® to which additional modules such as remote displays or dataloggers can be connected. The DeltaSol® AL offers e. g. a heat quantity measurement, a solar operating hours counter and can be switched between °C and °F. Operation and function control are as easy as usual.
- System-Monitoring-Display
- Up to 3 Pt1000 temperature sensors
- Heat quantity measurement
- Function control
- Solar operating hours counter
- Housing with brand new design
- Intuitive operating concept
- RESOL VBus®
- Extra-low standby power consumption
Solar controller DeltaSol® BS
The RESOL controller for standard solar
thermal systems. The DeltaSol® BS
controller provides a clear operating concept
and is equipped with the illuminated
combined display with system-monitoring.
Flashing symbols for sensors, pumps and
valves enable an immediate allocation of
temperatures, temperature differences
and active actuators.
The DeltaSol® BS controller is available
in 2 versions, depending on the demands.
Details concerning the number of the
relays as well as additional functions are
shown in the table.
- Illuminated System-monitoring-Display
- Up to 4 Pt1000 temperature sensors
- Pump speed control
- Optional thermostat function (time-controlled), thermal disinfection function, drainback function
- 3 basic systems are possible (DeltaSol® BS/4 only)
- Heat quantity measurement
- Tube collector function (DeltaSol® BS/4 only)
- Function control
- commissioning menu
- Unit °F and °c selectable
Solar controller DeltaSol® BS Plus
The DeltaSol® BS Plus controller is
pre-programmed for different hydraulic
basic systems and equipped with pump
speed control and heat quantity measurement.
The controller additionally has a timecontrolled
thermostat function and is
equipped with the RESOL VBus® for data
communication. This VBus® permits twoway
communication between modules,
Pcs or dataloggers. The controller can
easily be confi gurated by Pc using the
RESOL Servicecenter Software. Temperatures
in certain time slots can be adjusted
independently using the integrated
thermostat function and real time clock.
- Thermostat function
- Illuminated system-monitoring-display
- Up to 4 Pt1000 temperature sensors
- 2 relays for pump speed control
- Drainback option including booster function
- Heat dump function
- 10 systems selectable
- Energy metering
- Function control
- RESOL VBus®
- Programming and remote control of the system via RESOL ServiceCenter software possible
Solar controller DeltaSol® ES
The number of sensor inputs and relay outputs (10/6) bridges the gap between the versions DeltaSol® BS and DeltaSol® M. The sophisticated and shapely design as well as the proven user-friendly operation of this product series are continued and also upgraded by further adjustable parameters.The controller is pre-programmed for 36 solar and heating systems, the individual installation configuration can be selected via the menu and represented graphically via the system-monitoring display. For data communication and remote maintenance, the controller is equipped with the RESOL VBus® which permits two-way communication between modules, PCs or dataloggers.
- llluminated system-monitoring-display
- 36 basic systems to choose from
- Pump speed control, solar operating hours counter
and energy metering - 8 sensor inputs
- 7 relay outputs
- Function control
- RESOL VBus®
- User-friendly operation
- Easy-to-mount housing with outstanding design
Solar controller DeltaSol® E
The DeltaSol® E controller is designed for solar thermal systems and heating systems. It is pre-programmed for 7 basic solar systems and up to 30 variations which can even be used to control large systems. A multitude of adjustable functions and options are possible using 7 relay outputs, 13 sensor inputs for Pt1000, CS10, V40 and Din. Due to its intelligent and easy-to-understand system configuration and its integrated calorimeter, the controller also offers the control of complex systems with up to 4 weathercompensated heating circuits. For data communication and remote maintenance, the controller is equipped with the RESOL VBus®, which permits two-way communication between modules, PC‘s or data loggers.
- 7 basic solar systems are possible
- Pump speed control, solar operating hours counter and energy metering
- Internal calorimeter
- 1 internal heating circuit and control of 3 additional weather-compensated heating circuits by additional modules
- 13 sensor inputs
- 7 relay outputs
- Function control
- RESOL VBus®
- Housing with outstanding design
- User-friendly operation
DeltaSol® Pool
The RESOL DeltaSol® Pool is a controller for heating a swimming pool by means of solar collectors and optimised operation of the filter system. Back up heating of the swimming pool is varied according to solar power and pool demand, thus saving expensive energy. Furthermore, the controller is equipped with a function control which shows whether the system runs faultlessly or if there is an error.
The controller has many additional pool functions such as: additional filter runtime, maximum limitation of flow temperature and a flushing function.
The DeltaSol® Pool can easily be connected to other modules via the RESOL VBus®.
- Controller for heating a swimming pool by means of solar collectors and optimised operation of the filter system
- Solar operating hours counter and energy metering
- 13 sensor inputs
- 7 relay outputs
- Function control
- RESOL VBus®
- Filter runtime monitoring
- Maximum flow temperature limitation
- Collector cooling function
- Collector emergency shutdown
- Pump monitoring
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