Please note, it is very important to distinguish our two generations of SPRING: The SPRING3 with its polymer exchanger and the SPRING4 with its aluminum exchanger.

SPRING4 panel was designed to be assembled and connected in portrait mode. 

It is possible to make a landscape mode but the connection will be in portrait mode.

⚠️ Landscape installation with portrait assembly is impossible. 

Depending on the number of panels, balancing valves can be needed. 

• Homogeneous lines : Thichelman balance can be used if the panel fields are identical (with the same number of panels assembled in the same configuration). Hydraulic lines for the entry and exit of the fluid must be the same as per the following pattern.

• Non homogeneous lines : When the balancing with tichelmann is not doable, or the panel field are not homogenous (number of panels different for exemple), the installation of balancing valve is required. Sizing of the valves depends on the number of panels per lines and the nominal flow required see : Installation, use, maintenant manual Dualsun SPRING4 5.5.3. Hydraulic balancing of panel fields for Dualsun pressurized system 

Whatever the configuration, in order for the panel to be filled properly it si mandatory to not exceed the following number of panels per lines : What is the maximum number of SPRING panels that can be connected in series on the same branch?

All hydraulic configurations are possible with SPRING4 but what we recommend for optimized thermal production is to have a Z configuration : filling in the bottom and exit on the top, opposite side:

The DualSun SPRING3 panel can be installed:

• either portrait (cold water inlet bottom left)

• either landscape(cold water inlet at bottom right)

• either (but it is not recommended because it is more complex) by combining portrait panel fields and landscape panel fields : it is then important to respect the following points:

  • there cannot be portrait and landscape panels in the same hydraulic group (there is therefore either a whole portrait group or a whole landscape group)

  • the hydraulic panel groups must all be in parallel (as usual)

  • multi-field balancing must be respected (see more details here) 

  • cold and hot entry into the panel groups must be respected (cold water entry is in a different location in portrait and landscape, see details here)
    

To go further :  What are the different layouts possible in residential areas?

Please note, the Dualsun SPRING3 panel is self-draining when installed in portrait (for a direct pool system open circuit for example), but it is not when in landscape.