Resol BS4 Solar Controller
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Resol BS4 Solar Controller

  • BS4

  • Resol

RESOL BS4 Controller

RESOL BS4 Controller 1

Apricus cooperate with RESOL solar controllers for residential & commercial solar hot water systems. The RESOL controllers for standard solar thermal systems. The DeltaSol® BS series provides a clear operating concept. The intuitive commissioning menu leads you through the initial configuration in only a few steps. The system selected is shown on the display, the status of the individual components is indicated by means of flashing codes. The DeltaSol® BS series is available in 3 versions, depending on the demands. Details concerning the number of the relays as well as additional functions are shown in the technical data.

Key Features     

  • Drainback option

  • Heat quantity measurement

  • Function control

  • Commissioning menu

  • Unit °C and °F selectable

  • HE pump control via adapter

  • 3 basic system layouts (DeltaSol® BS/4), 10 basic system layouts

  • Tube collector function, thermal disinfection function,

  • time-controlled thermostat function

RESOL BS4 Controller 2

Technical Specifications

4 Pt1000 temperature sensors
Outputs: semicon-ductor relays
Switching capacity: 1 (1) A 240 V~ (semiconductor relay)
Total switching capacity: 2 A 240 V
Power supply: 100 ... 240 V~ (50 ... 60 Hz)
Supply connection: type Y attachment
Standby: 0.74 W
Temperature controls class:  I
Energy efficiency contribution: 1 %
Mode of operation: type 1.C.Y action
Rated impulse voltage: 2.5 kV
Data interface: RESOL VBus®
VBus® current supply: 35 mA
Functions: function control,operating hours counter, tube collector function, heat quantity measurement and pump speed control
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 and 7-segment display, 8 symbols for indication of system status andoperating control LED
Operation: 3 push buttons
Ingress protection: IP 20 / EN 60529
Protection class: II
Ambient temperature: 0 ... 40 °C
Pollution degree: 2
172 x 110 x 49 mm

For more information about solar controllers, please visit Technical Documentation by click here.


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Founded in 2003 by Australian Mick Humphreys with a specific focus on solar thermal solutions, Apricus has since grown into a global company with distribution and support offices worldwide. 



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