Thermal system solar controller DELTASOL® SLL

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. 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 Max. number of collector fields:21 Max. number of stores:21 Weather-compensated heating circuits:- External heat exchanger:- Speed control of standard pumps:check Speed control of HE pumps:check ■ via integrated PWM output:check ■ via PSW adapter:- Hardware Temperature sensor inputs:4 Sensor type:Pt1000, Pt500, KTY Inputs for Grundfos Direct Sensors™:- Input for CS10 irradiation sensor:- Impulse inputs for V40 flowmeter:1 Relay outputs in total:3 ■ semiconductor relays (speed control):2 (2) ■ electromechanical relay:- ■ potential-free relay with changeover contact:- ■ potential-free relay with normally open contact:1 ■ potential-free high-current relay:- PWM outputs:2 ■ convertible to 0-10 V:- Real-time clock:check Data interface:VBus® Energy-efficient SMPS:check Power supply:100 ... 240 V~