Solar Controller - ReSol DeltaSol BS/Plus

Advanced solar zone controller with four input sensors and two external pump/switch relays

Download DeltaSol Pool Product Specification PDF

The RESOL DeltaSol® BS Plus system controller is for standard solar thermal systems with 2 standard-relays allowing control of two zones such as water and AUX heating zone. It has an additional aqua stat function preprogrammed for different hydraulic layouts and is equipped with energy metering. The BS/Plus also comes standard with variable speed pump control.

• Illuminated system-monitoring-display
• Up to 4 temperature sensors Pt1000
• 2 standard-relay outputs and two tanks and two collector fields
• 9 basic layouts are selectable
• Heat balancing, tube collector function
• Energy metering
• Function control
• Programming and remote control of the system via RESOL Service Center Software possible
• RESOL VBus®
• Real Time Clock (timer function)
• Aqua stat function
• Emergency shut down and cooling function
• Freeze protection
• Vacuum tube collector function

• Housing: plastic, PC-ABS and PMMA
• Protection type: IP 20 / DIN 40050
• Ambient temperature: 0 ... 40 °C
• Dimension: 172 x 110 x 49 mm
• Installation: wall mounting, mounting into patch panels is possible
• Display: system-monitoring for visualization of systems, 16-segment- and 7-segment display, 8 symbols for indication of system status and operating control lamp
• Inputs: 4 temperature sensors Pt1000
• Outputs: 2 semiconductor relays
• Operation: 3 push buttons at the front
• Functions: differential temperature controller with adjustable system functions. Function control according to BAW-guidelines, operating hours counter for the solar pump, tube collector function, thermostat function, pump speed control, heat quantity measurement and
• Bus: RESOL VBus®
• Power consumption: approx. 2 VA
• Switching capacities: 1 (1) A 110 ... 120 V~ (semiconductor relay) 1 (1) A 110 ... 120 V~ (semiconductor relay)