Solar controller with speed RPM control Lago SG 2, Lago SG 3 Product brochure · GB 10 Edition 03.15 • For controlling pumps and switch-over valves on pressure solar systems or drain-back systems • Actuation of speed-controlled pumps via PWM or 0–10 V • Easy to program and operate via selector switch and rotary knob • Convenient system installation using installation assistant by selecting the number of connected sensors and actuators • Automatic detection of connected sensors • Query of temperature curves and solar heat production • Collector and pump block protection function • Easy wall mounting as base can be removed

2 · Lago SG 2, Lago SG 3 · Edition 03.15 The selector switch and rotary knob for simple query of temperatures and yield or setting system parameters. Solar controller with removable base for easy wall mounting. Application The solar controllers Lago SG 2 and Lago SG 3 are suitable for use with flat and tubular collectors as well as solid fuel boilers and layer storage systems. The connected sensors measure the temperature differences and control pumps and switch-over valves on pressure solar systems or drain-back systems. The installation assistant allows the heating system to be easily installed...

Lago SG 2, Lago SG 3 · Edition 03.15 · 3 System 5 (1 collector, 2 storage tanks, 1 switch-over valve) System 10 (1 collector, 1 storage tank, drain-back system) System 6 (1 collector, 2 storage tanks, 2 charge pumps) F1 Lago SG 3 System 11 (1 collector, 1 storage tank, 2 feeding areas) System 7 (1 collector, 1 storage tank or 2 storage tanks) A3 System 12 (1 collector, 1 storage tank, 3 feeding areas) System 13 (1 collector, 1 storage tank, drain-back system) A1 (F2) System 8 (1 collector, 1 storage tank, return temperature increase) System 9 (1 collector, 2 storage tanks, refeeding pump) F1...

4 · Lago SG 2, Lago SG 3 · Edition 03.15 Technical Specifications Mains voltage according to DIN IEC 60 038: ~230 V, +10/-15% Power consumption: max. 5 W Switching capacity of the relays: ~250 V, AC 2 (2) A Max. current via terminal L1’: 6.3 A Protection class according to EN 60529: IP 40 Protection class according to EN 60730-1: I Overvoltage category III (EN 60730-1) Contamination class 2 (EN 60730-1) Reserve power of clock: >10 h. Permissible ambient temperature during operation: 0 to 50 °C Permissible ambient temperature during storage: -25 to +60 °C Permissible relative humidity, not condensing:...