Resol GmbH

Resol - Model DeltaSol SLL - Solar Controller

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The DeltaSol SLL is the smallest controller of the SL series. Its equipment is optimised for small and medium-sized solar thermal and heating systems, 10 pre-configured basic systems are available. The DeltaSol SLL is also the first controller of its category to offer the automatic function control according to the VDI 2169 directive. Additionally, it is equipped with a potential-free extra-low voltage relay for backup heating demand and a V40 flowmeter input for heat quantity measurement.

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Microbuttons for quick access to the manual mode and the holiday function
3 relay outputs (incl. 1 potential-free extra-low voltage relay)
4 inputs for Pt1000, Pt500 or KTY temperature sensors
1 V40 impulse input
2 PWM outputs for the speed control of high-efficiency pumps
10 basic system layouts to choose from
Automatic function control according to VDI 2169
Heat pump demand (optional)

Inputs: 4 inputs for Pt1000, Pt500 or KTY temperature sensors, 1 V40 impulse input
Outputs: 2 semiconductor relays, 1 potential-free extra-low voltage relay, 2 PWM outputs
PWM frequency: 1000 Hz
PWM voltage: 10.5 V
Switching capacity:
1 (1) A 240 V~ (semiconductor relay)
1 (1) A 30 V= (potential-free relay)
Total switching capacity: 2 A 240 V~
Power supply: 100 – 240 V~ (50 – 60 Hz)
Supply connection: type X attachment
Standby: 0.69 W
Temperature controls class: I
Energy efficiency contribution: 1 %
Mode of operation: Typ 1.B.C.Y
Rated impulse voltage: 2.5 kV
Data interface: RESOL 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, 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, control lamp (Lightwheel®)
Operation: 4 push buttons and 1 adjustment dial (Lightwheel®)
Ingress protection: IP 20 / DIN EN 60529
Protection class: I
Ambient temperature: 0 ... 40 °C
Pollution degree: 2
Dimensions: 110 x 166 x 47 mm
Maximum altitude: 2000 m above MSL
Fuse: T2A