Solar and system controllers Solar and system controllers

Solar controller DeltaSol® SL

Manuals available:
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  • 4 relay outputs (incl. 1 extra-low voltage relay)
  • 4 inputs for Pt1000 or Pt500 temperature sensors
  • Inputs for 1 analogue Grundfos Direct Sensor™ and 1 FlowRotor
  • 1 V40 impulse input (also usable as a Pt1000, Pt500 or KTY temperature sensor input)
  • 2 PWM outputs for the speed control of high-efficiency pumps
  • 27 basic system layouts with up to 3 hydraulic variants each to choose from
  • Automatic function control according to VDI 2169
Integrated MicroSD card slot!
PLUS X AWARD - Bestes Produkt des Jahres 2012
rosenthal design

Solar controller DeltaSol® SL

Article-no: 115 003 37 | Price bracket A

Solar controller DeltaSol® SL - Full kit
Incl. 4 Pt1000 sensors (2 x FKP6, 2 x FRP6)
Article-no: 115 003 47 | Price bracket A

With its versatile software, the DeltaSol® SL can control even complex systems easily and reliably. 27 pre-configured system layouts with up to 3 hydraulic variants each facilitate the commissioning and enable the adaptation to the individual system requirements. The operation via 2 main buttons and 1 adjustment dial, the Lightwheel®, still follows the well-known operating concept. The multicoloured LED, integrated in the Lightwheel®, offers many possibilites to signal different system states. The microSD card slot and the 2 microbuttons for quick access to the manual mode and the holiday function are located underneath the slidable housing cover, the SLider.

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

Temperature sensor inputs:
4 (54)
Sensor type:
Pt1000, Pt500, KTY
Inputs for Grundfos Direct Sensors™:
Input for CS10 irradiation sensor:
Impulse inputs for V40 flowmeter:
Relay outputs in total:
■ semiconductor relays (speed control):
3 (3)
■ 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®, MicroSD 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:
Twin pump for solar circuit:
Cooling functions and cooling mode:
Flow rate monitoring:
Pressure monitoring:
Function control:
VDI 2169
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: 4 inputs for Pt1000, Pt500 or KTY temperature sensors, 1 analog Grundfos Direct Sensor™, 1 FlowRotor, 1 V40 impulse input (also usable as a Pt1000, Pt500 or KTY temperature sensor input)
Outputs: 3 semiconductor relays, 1 dry-contact extra-low voltage relay, 2 PWM outputs (switchable to 0-10 V)
PWM frequency: 512 Hz
PWM voltage: 10,8 V
Switching capacity:
1 (1) A 240 V~ (semiconductor relay)
14 (2) A 24 V DC/ 240 V~ (dry-contact relay)
Total switching capacity: 3 A 240 V~
Power supply: 100 ... 240 V~ (50 ... 60 Hz)
Supply connection: type Y attachment
Standby: 0,72 W
Temperature controls class: I
Energy efficiency contribution: 1 %
Mode of operation: type 1.B.C.Y action
Rated impulse voltage: 2,5 kV
Data interface: RESOL VBus®, MicroSD card slot
VBus® current supply: 60 mA
Functions: operating hours counter, evacuated tube collector function, thermostat function, pump speed control, energy metering, adjustable system parameters and optional functions (menu-driven), balance and diagnostics function, function control according to VDI 2169
Housing: plastic, PC-ABS and PMMA
Installation: wall mounting, mounting into patch panels is possible
Indication/Display: System-Monitoring-Display for system visualisation, 16-segment-display, 8 symbols for indication of the system status, Lightwheel® (adjustment dial) and background illumination
Operation: 4 push buttons at the front and 1 Lightwheel®
Ingress protection: IP 20 / EN 60529
Protection class: I
Ambient temperature: 0 ... 40 °C / 32 ... 104 °F
Pollution degree: 2
Dimensions: 110 x 166 x 47 mm / 4.33" × 6.53" × 1.85"
Protection class: I
  1 system-dependent
  4 via convertible impulse inputs

Product photos

DeltaSol® SL open (7777 kB)
DeltaSol® SL (17428 kB)

Please note that RESOL – Elektronische Regelungen GmbH owns the sole copyright on objects, documents, graphics, pictures, audio and video documents, texts, etc. published and created by RESOL – Elektronische Regelungen GmbH. Copying, distribution to third parties, changing the contents or using these contents in electronic or printed publications is not permitted without the explicit approval of RESOL.

Customized and OEM versions are available on request. Please contact our sales team.
The cTUVus certification confirms that the controller is certified to UL 60730-1A and CSA E60730.1.
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.