DeltaSol^® SLL Solar controller

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
• Heat pump demand (optional)