Solar and differential temperature controllers
Solar controller DeltaSol® BX Plus
The new member of the DeltaSol® family is the BX Plus. The system controller is equipped with five relay outputs and up to 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®.
- Data logging, storing and firmware updates via SD memory card
- Pre-programmed optional functions
- Up to 2 extension modules via RESOL VBus® connectable (21 sensors and 15 relays in total)
- 2 inputs for digital Grundfos Direct Sensors™
- 5 relay outputs and up to 9 sensor inputs for Pt1000, Pt500 or KTY temperature sensors
- Extra large graphic display
- 2 PWM outputs for speed control of high-efficiency pumps
- Drainback option
- Time-controlled thermostat function
- Termal disinfection function
- RESOL VBus
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 and four PWM outputs for the speed control of energy-saving high-efficiency pumps; all 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 parameterisation 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 SensorsTM
- 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 fi ve 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 visualisation of the system status. Pre-defined functions allow easier parametrisation 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
- 7 sensor inputs
- Inputs for Grundfos Direct SensorsTM
- Speed control of high-effi ciency pumps
- Datalogging onto SD memory card
- Drainback option
- RESOL VBus®
- Energy-saving switching-mode power supply
Solar controller DeltaSol® AL E
The DeltaSol® AL E controller is especially
designed for standard solar systems
with an electric afterheating. It is equipped
with two high-current relays to which
an electric immersion heater of up to 3
kW can be connected. The heater can be
directly connected to the controller without
the need of auxiliary relays. A time
and temperature control for the electric
heater can be adjusted through the controller
menu. Of course, the controller also
offers all the vital functions for a standard
solar system.
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 E offers heat quantity measurement,
operating hours counters for the relays
and can be switched between °C and °F.
Operation and function control are as
easy as usual.
- Direct connection of an electric immersion heater up to 3 kW
- Time and temperature control of the electric afterheating
- System-Monitoring-Display
- Up to 3 Pt1000 temperature sensors
- Heat quantity measurement
- Function control
- Operating hours counter
- Intuitive operating concept
- RESOL VBus®
- Extra-low standby power consumption
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.
- Illuminated System-monitoring-Display
- 2 semiconductor relays for pump speed control
- 10 basic systems are possible
- Heat quantity measurement
- Function control
- Optional thermostat function (time-controlled), thermal disinfection function, drainback function
- Commissioning menu
- Unit °F and °c selectable
Solar controller DeltaSol® C HE
The RESOL DeltaSol® C HE is designed for the control of a high-efficiency pump in standard solar thermal systems. The control is effected via a PWM output. The controller offers functions such as speed control, heat quantity measurement, tube collector function and a graphical balancing function.
- Full graphic display with intuitive symbols
- Up to 3 temperature sensors Pt1000
- PWM output for high-efficiency pumps
- Function control
- Graphic balancing functions
- Real time clock
Solar controller DeltaSol® DB
The DeltaSol® DB is a differential temperature controller for solar drainback systems. Depending on the product version, it provides speed control, heat quantity measurement, etc. The DeltaSol® DB is available in the versions 1 to 4. The DB/3 and DB/4 controllers are additionally equipped with a booster function for the quick filling of the system using a second pump. For data communication, the DeltaSol® DB is equipped with the RESOL VBus®.
- Illuminated system-monitoring-display
- Up to 4 temperature sensors Pt1000
- Optional pump speed control, solar operating hours counter
and thermostat function - 3 basic systems to choose from
- Heat quantity measurement
- Function control
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 heat quantity measurement - 8 sensor inputs
- 7 relay outputs
- Function control
- RESOL VBus®
- User-friendly operation
- Easy-to-mount housing with outstanding design
Solar controller DeltaSol® E
A multitude of adjustable functions and options are possible using 7 relay outputs and 10 sensor inputs for Pt1000, CS10 and V40. 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 weather-compensated heating circuits. For data communication and remote maintenance, the controller is equipped with the RESOL VBus®, which permits two-way communication between modules, PCs or dataloggers.
- 7 basic systems to choose from
- Pump speed control, solar operating hours counter
and heat quantity measurement - Internal calorimeter
- 4 heating circuits can be activated
- 10 sensor inputs
- 7 relay outputs
- Function control
- RESOL VBus®
- User-friendly operation
Solar controller DeltaSol® A
Universal and robust differential temperature controller for solar, heating and air conditioning systems. The version DeltaSol® A is equipped with an adjustable temperature difference 2 ... 16 K and a frost protection function which can be activated / deactivated by jumpers.The version DeltaSol® AX presents an extended version which is additionally equipped with an adjustable target temperature for minimum or maximum temperature limitation (adjustable by micro-switch). The enclosed silicone sealing cord guarantees a protection against dripping water.
- Adjustable temperature difference 2 ... 16 K, hysteresis 1,6 K
- Frost protection adjustable by jumper / micro-switch
- Maximum or minimum temperature limitations adjustable by micro-switch (DeltaSol® AX)
- Protection against dripping water
- Outstanding design for robust application
DeltaSol® Minipool
The RESOL DeltaSol® Minipool is a controller for heating a swimming pool by means of solar collectors and optimised operation of the filter system. The controller is equipped with a function control which shows whether the system runs faultlessly or if there is an error. Furthermore, the controller has many additional pool functions such as: maximum limitation of flow temperature, pool cooling function and a flushing function. The DeltaSol® Minipool can easily be connected to other modules via the VBus®.
- Controller for heating a swimming pool by means of solar collectors
and optimised operation of the filter system - 4 sensor inputs
- 2 relay outputs
- Function control
- RESOL VBus®
- Filter runtime monitoring
- Maximum flow temperature limitation
- Cooling function
- Collector emergency shutdown
- Operating hours counter
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 heat quantity measurement
- 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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