Solar and differential temperature controllers
Solar controller DeltaSol® AL
The DeltaSol® AL solar controller is a temperature differential controller that offers all vital functions for a standard solar thermal system. The controller is equipped with the comprehensible System-Monitoring-Display, which visualises the system parameters quickly and easily. For data communication, the controller has a RESOL VBus® to which additional modules such as remote displays or dataloggers can be connected. The DeltaSol® AL offers e. g. a heat quantity measurement, a solar operating hours counter and can be switched between °C and °F. Operation and function control are as easy as usual.

Inputs: for 3 Pt1000 temperature sensors
Outputs: 1 electromechanical relay with change-over contact
Switching capacities: electromechanical relay:
4 (1) A 240 V~
Power supply: 100 ... 240 V~ (50 ... 60 Hz)
Power consumption: standby: < 0.5 W
maximum: < 0.7 W
Functions: Differential temperature controller for standard solar thermal systems. Function control, operating hours counter for the solar pump, tube collector function and heat quantity measurement.
Housing: plastic, PC-ABS and PMMA
Installation: wall mounting
Display: System-Monitor for visualisation, 16-segment display, 7-segment display, 8 symbols for system states, background illumination and operating control lamp
Operation: 3 push buttons at the front of the housing and 1 slide switch
Protection type: IP 20 / EN 60529
Ambient temperature: 0 ... 40 °C
Dimensions: 144 x 208 x 43 mm
Bus: RESOL VBus® (max. current drain 35 mA)
![]() The number of VBus® accessories that can be connected to one controller depends on the sum of their current consumption and on the current supply of the controller VBus®. |
|
|---|---|
| Device | Maximum current consumption |
| VBus® / PWM interface adapter | 6,5 mA |
| VBus® / USB interface adapter | 6,5 mA |
| VBus® / LAN interface adapter | 6,5 mA |
| Datalogger DL2 | 1,5 mA |
| Smart Display SD3 | 17,5 mA |
| GA3 Large Display | 1 mA |
| AM1 alarm module | 16,5 mA |
| HKM3 | 1 mA |
| EM | 1 mA |
Solar controller DeltaSol® AL
Solar controller for standard solar thermal systems
Article-no: 115 212 63 | Price bracket A
Solar controller DeltaSol® AL - Full kit
Solar controller for standard solar thermal systems incl. 2 sensors (1 x FKP6, 1 x FRP6)
Article-no: 115 212 73 | Price bracket A














