- Number of relay outputs
-
2 for SCU 124
4 for DeltaSol BX - Number of sensor inputs
-
4 for SCU 124
5 for DeltaSol BX - Number of system configurations
-
3 for SCU 124
26 for DeltaSol BX - Number of heat loads (tanks)
-
1 for SCU 124
2 for DeltaSol BX - Number of differentials
-
1 for SCU 124
2 for DeltaSol BX - Internal SD card slot
-
Not available for SCU 124
Standard for DeltaSol BX (SD card is included) - Flowmeter option
-
Not available for SCU 124
Compatible with DeltaSol BX
Solar Controls
User-friendly controls for solar systems
Differential temperature controls with industry leading performance and efficiency.
SCU 124 control
For basic single-load solar systems.
DeltaSol BX control
For multi-load, east-west and commercial arrays.
Accessories
A number of VBus system accessories are compatible with the DeltaSol BX.
Solar Controls
Get the best performance from your solar system with the right control solution. Now choose from a full range of controls for every level of application!
Viessmann solar controls are capable of managing a wide variety of applications – from basic to very complex and give you the versatility and the power to meet the various system design requirements.
SCU 124 solar system control
The SCU 124 solar control is ideal for basic systems with two semiconductor relay outputs and four sensor inputs. The single-load SCU 124 control features three basic, preprogrammed system configurations for easy planning and installation.
DeltaSol BX solar system control
The DeltaSol BX is an advanced solar control for multi-load systems, east-west collector arrays and commercial solar systems. This advanced solar system control features four relay outputs and adjustable delta-T and time controlled thermostat functions for limitless configuration possibilities. The DeltaSol BX control is compatible with a number of system accessories designed for system monitoring, analytics and additional control.
Sample system layout
- Vitosol solar collector
- Solar-Divicon
- V40 Flowmeter Kit
- Temperature sensor
- Vitocell solar tank
- Motorized diverting valve
- DeltaSol BX control
