Solar & system controllers Solar & system controllers

System controller DeltaSol® MX

Menu languages:
  • 14 relay outputs and 12 inputs for Pt1000, Pt500 or KTY temperature sensors
  • Up to 5 extension modules via RESOL VBus® (45 sensors and 39 relays in total)
  • Inputs for analogue and digital Grundfos Direct Sensors™
  • Integrated control of up to 4 high-efficiency pumps via PWM outputs
  • Data logging, storing, easy transfer of controller adjustments prepared and firmware updates via SD card
  • Cooling over the heating circuit with condensation detection by means of a dew point switch
  • Simplified timer, 0-10 V boiler control and DHW preheating
  • Remote access to the heating circuits with room control unit(s) or the VBus®Touch HC App
  • Extended optional functions, e.g. solid fuel boiler function with mixer and target temperature control
Certified for the North-American market!
rosenthal design
VBus®Touch HC

System controller DeltaSol® MX
System controller for solar and heating systems, incl. SD card
Article-no: 115 992 03 | Price bracket A 572,10 €   Add to wish list

Solar controller DeltaSol® MX - Full kit
System controller for solar and heating systems incl. 6 sensors Pt1000 (2 x FKP6, 4 x FRP6) and SD card
Article-no: 115 992 13 | Price bracket A 634,10 €   Add to wish list

The DeltaSol® MX is the most versatile system controller for complex solar and heating systems in our product range. It is ideal to control a combination of solar and non-solar parts of the system. Easy combination and parameterisation of pre-programmed functions for several millions of hydraulic variants.

Max. number of collector fields:
Max. number of stores:
Weather-compensated heating circuits:
2 (72)
External heat exchanger:
Speed control of standard pumps:
Speed control of HE pumps:
■ via integrated PWM output:
■ via PSW adapter:

Temperature sensor inputs:
12 (154)
Sensor type:
Pt1000, Pt500, KTY
Inputs for Grundfos Direct Sensors™:
analogue, digital
Input for CS10 irradiation sensor:
Impulse inputs for V40 flowmeter:
Relay outputs in total:
■ semiconductor relays (speed control):
13 (13)
■ electromechanical relay:
■ potential-free relay with changeover contact:
■ potential-free relay with normally open contact:
■ potential-free high-current relay:
PWM outputs:
■ convertible to 0-10 V:
Real-time clock:
Data interface:
VBus®, SD card
Energy-efficient SMPS:
Power supply:
100 ... 240 V~

Heat quantity measurement
■ with flowmeter:
■ with V40 flowmeter:
■ with Grundfos Direct Sensors™:

Software functions
Antifreeze function for solar circuit:
Collector minimum limitation:
Collector emergency shutdown:
Store maximum limitation:
Store set temperature:
Store emergency shutdown:
Drainback option:
Tube collector function:
■ with adjustable time frame, interval:
Additional ΔT control:
Thermostat function:
Target temperature:
Heat dump function:
Heat exchange:
Store loading in layers:
Priority loading:
■ Parallel loading:
■ Store sequence control:
■ Progressive loading:
■ Successive loading:
■ Spreaded loading:
Solar circuit bypass:
Irradiation-dependent bypass:
Irradiation switch:
Afterheating suppression:
Parallel relay:
solar, free selectable
Twin pump for solar circuit:
Cooling functions and cooling mode:
Flow rate monitoring:
Pressure monitoring:
Function control:
Error relay:
DHW hygiene functions:
■ DVGW legionella protection:
■ Thermal disinfection:
DHW heating:
Heating circuit return preheating:
Boiler loading/Zone loading:
Solid fuel boiler:
Mixer control weather-compensated:
Mixer control with target temperature:
Function block:
Heating circuit antifreeze function:
Chimney sweeper function for the heating circuit:
Room thermostats:
Inputs: 12 Pt1000, Pt500 or KTY temperature sensor inputs (can optionally be used for remote controls, operating mode switches or potential-free switches), 3 impulse inputs for V40 flowmeters, 1 input for a FlowRotor, 1 CS10 solar cell, 4 Grundfos Direct Sensors™ (2 x analogue, 2 x digital)
Outputs: 14 relays, 13 of them semiconductor relays for pump speed control, 1 potential-free relay and 4 PWM outputs (convertible to 0-10 V signal outputs)
PWM frequency: 512 Hz
PWM voltage: 10.5 V
Switching capacity:
1 (1) A 240 V~ (semiconductor relay)
4 (1) A 24 V DC/ 240 V~ (potential-free relay)
Total switching capacity: 6.3 A 240 V~
Power supply: 100 ... 240 V~ (50 ... 60 Hz)
Supply connection: type Y attachment
Standby: 0,84 W
Temperature controls class: IV
Energy efficiency contribution: 5 %
Mode of operation: type 1.B.C.Y. action
Rated impulse voltage: 2.5 kV
Data interface: RESOL VBus®
VBus® current supply: 35 mA
Functions: solar system controller for use in solar and heating systems. 7 integrated calorimeters and control of weather-compensated heating circuits. Adjustable system parameters and add-on options (menu-driven), balance and diagnostics functions, function control according to VDI 2169
Housing: plastic, PC-ABS and PMMA
Mounting: wall mounting, mounting into patch panels is possible
Indication/Display: full graphic display
Operation: 7 push buttons at the front
Ingress protection: IP 20 / IEC 60529
Protection class: I
Ambient temperature: 0 ... 40 °C
Pollution degree: 2
Dimensions: 253 × 200 × 47 mm
  1 system-dependent
  2 via EM Extension Module(s) in total
  4 via convertible impulse inputs

V40 Flowmeter
Article-no: 280 011 00 | A         166,00€  Add to wish list
TS10 Dew point switch
Dew point switch for connection to the DeltaSol® MX (from version 2.0)
Article-no: 155 009 00 | B         118,00€  Add to wish list
EM extension module
Sensor and relay extension module with 5 outputs and 6 inputs
Article-no: 145 440 80 | A         212,40€  Add to wish list
DL3 Datalogger
Datalogger incl. RESOL Service CD, SD card, mains adapter, LAN and VBus® cable
Article-no: 180 009 90 | A         672,00€  Add to wish list
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Product photos

DeltaSol® MX (6835 kB)

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Customised and OEM versions are available on request. Please contact our sales team.
The cTuVUS certification confirms that the controller meets the demands of the UL 60730-1A and CSA E60730.1 standards.
The cLCus certification confirms that the controller meets the demands of the UL 60730-2-9 and CSA - E60730-2-9-01 standards.
The cLCus certification confirms that the controller meets the demands of the UL 60730-1A and CSA E60730.1 standards.