RESOL DeltaSol® SLL Solar 1-3 sensor controller
**The RESOL DeltaSol® SLL controller is the replacement controller for the Resol DeltaSol BS/4, BS/2, BS Plus, AX and AL controllers.**
- Microbuttons for quick access to manual mode and the holiday function
- 2 semiconductor relay outputs, both suitable for pump speed control
- 4 inputs for Pt1000, Pt500 or KTY temperature sensors
- 1 V40 impulse input for heat quantity measurement
- 2 PWM outputs for speed control of high-efficiency pumps
- 2 basic system layouts to choose from
- Tube collector function, drainback option, and thermostat/backup heating function
- Cooling functions including heat dump (System 1 only)
- Automatic function control according to VDI 2169
Please read before ordering — Australian version
The DeltaSol® SLL supplied in Australia is a market-specific version, confirmed by RESOL. It does not include a thermal disinfection function, an SD card slot, or VBus RPT remote parameterisation. If your existing controller uses any of these, please contact us before ordering.
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1 x 20m roof sensor
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2 x 2.5m tank sensor
- 1 x 5g thermal heat paste
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Australian power supply (fitted)
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Female pump lead (fitted)
Take a moment to browse our site. We stock a range of accessories to suit the RESOL DeltaSol® SLL controller. Accessories are easy to connect to the VBus on the controller. It is as easy as adding a sensor. The RESOL DeltaSol® SLL is used in the Apricus, Dux and Thermann solar hot water systems.
The RESOL DeltaSol® SLL controller has an IP rating of 20, which is fine for indoor use. If using outside, we recommend using a moisture-proof housing. We sell a version of this controller which includes a moisture-proof housing. Take a moment to browse our Pump Station section in Parts for more information.
Moisture-proof housing to suit RESOL Controllers
Technical data
Inputs: 4 inputs for Pt1000, Pt500 or KTY temperature sensors, 1 V40 impulse input
Outputs: 2 semiconductor relays, 2 PWM outputs
PWM frequency: 1000 Hz
PWM voltage: 10,5 V
Switching capacity:
1 (1) A 240 V~ (semiconductor relay)
Total switching capacity: 2 A 240 V~
Power supply: 100–240 V~ (50–60 Hz)
Supply connection: X
Standby: 0.71 W
Temperature controls class: I
Energy efficiency contribution: 1 %
Mode of operation: Type 1.B.C.Y
Rated impulse voltage: 2.5 kV
Data interface: VBus®
VBus® current supply: 60 mA
Functions: operating hours counter, tube collector function, thermostat function,
pump speed control, heat quantity measurement, adjustable system parameters and
optional functions (menu-driven), balance and diagnostics function, function control
according to VDI 2169
Housing: plastic, PC-ABS and PMMA
Mounting: wall mounting, also suitable for mounting into patch panels
Indication/Display: System-Monitoring-Display, for visualisation of the systems,
16-segment-display, 8 symbols for indication of the system status, Lightwheel® (adjustment dial) and background illumination
Operation: 4 buttons at the front and 1 Lightwheel®
Ingress protection: IP 20/ EN 60529
Protection class: I
Ambient temperature: 0…40°C
Degree of pollution: 2
Relative humidity: 10…90%
Fuse: T2A
Maximum altitude: 2000 m above MSL
Dimensions: 110 x 166 x 47 mm
