Drainback option
Heat quantity measurement
Function control
Commissioning menu
Unit °C and °F selectable
HE pump control via adapter
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.
nputs: 4 Pt1000 temperature sensors
Outputs:
1 semiconductor relay (DeltaSol® BS/2)
2 semiconductor relays (DeltaSol® BS/4, DeltaSol® BS Plus)
Switching capacity: 1 (1) A 100 … 240 V~ (semiconductor relay)
Total switching capacity: 1 A 240 V~ (DeltaSol® BS/2), 2 A 240 V~ (DeltaSol® BS/4, DeltaSol® BS Plus)
Power supply: 100 – 240 V~ (50 – 60 Hz)
Supply connection: type Y attachment
Standby:
0.45 W (DeltaSol® BS/2)
0.74 W (DeltaSol® BS/4), 0.38 W (DeltaSol® BS Plus)
Temperature controls class: I (DeltaSol® BS/4, DeltaSol® BS Plus)
Energy efficiency contribution: 1 % (DeltaSol® BS/4, DeltaSol® BS Plus)
Mode of operation: type 1.C.Y action
Rated impulse voltage: 2.5 kV
Data interface: RESOL VBus®
VBus® current supply: 35 mA
Functions: differential temperature controller with adjustable system functions: function control according to BAFA guidelines, operating hours counter, tube collector function (DeltaSol® BS/4, DeltaSol® BS Plus), 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 for visualisation of systems, 16-segment and 7-segment display, 8 symbols for indication of system status and operating control lamp
Operation: 3 pushbuttons at the front
Ingress protection: IP 20 / IEC 60529
Protection class: II
Ambient temperature: 0 … 40 °C
Pollution degree: 2
Dimensions: 172 x 110 x 49 mm
Maximum altitude: 2000 m above MSL
Fuse: T4A
