How to install SPRING4 on a flat roof ?

Please find through this link Dualsun product compatibility guid. 

When installing on a flat roof, certain precautions must be taken:

• Mounting the panels in a  portrait orientation is highly recommended for a simple and effective installation.

figure 1 : Portrait orientation to ensure horizontal hydraulic connection

figure 2 : Manifold position on the back side of the SPRING4 panel

• You must ensure that the lower manifold (collector) does not conflict with the ground. The mounting system you choose, should raise the lower panel manifold, enough to avoid contact between manifold and the roof.

This solution positions the brackets between 294 mm and 394 mm on the long sides of the SPRING4 425. This is a standard bracket installation that ensures the panels hold up well under significant loads from things like snow and wind (+6600 Pa / -3600 Pa).

Figure 3: Minimum lower position of the rail for SPRING installation (long sides)

Figure 4: Height of the lower rail and tilt of installation depending on the type of panel

This solution places the brackets on the short sides of the frame. It ensures the panels hold up well under less significant loads than Solution 1. This approach, however, makes the panels compatible with a wider variety of mounting systems

Figure 5: Minimum lower position of the rail for SPRING installation (short sides)

Figure 6: Height of the lower rail depending on the type of panel

This system is not recommended in Nordic climate due to snow loads. Please find at the end of the FAQ, compatible mounting systems adapted to your project.

Installing the panels in landscape mode is not recommended. It forces you to create lines with only one panel, which requires adding "T" connectors at the inlet/outlet of each fitting to connect to the main pipework. This results in extra costs and greater pressure loss. In this type of installation, inter-panel connectors are not necessary.

Figure 8: Landscape installation with hydraulic connection via T-pieces to avoid hydraulic series connection of the panels

Installing the SPRING4 Finned panels in landscape is not recommended for the same explanation above. Moreover, fins are designed along the length of the panel, if the panel is installed in landscape orientation, thermal performances will decrease compared to portrait orientation (air exchange less performant)

For Installation in Nordic countries, here is a list of mounting systems compatibles with SPRING4 panels :