Solar system sizing

What kind of backup system should I use with my solar installation?
What kind of backup system for my solar installation? This is a common question. DualSun has no particular recommendation for the choice of backup sys...
How do I determine the required tank volume?
There are two cases to consider when dimensioning the volume of a hot water tank: For tanks with an integrated backup heating system the tank volume s...
How many DualSun SPRING3 panels are needed to heat a pool?
For solar pool heating, the formula recommended by DualSun (and used by the MyDualSun platform) is as follows: Number of DualSun panels  = Geographic ...
How many DualSun SPRING panels are necessary to provide heat to a water to water heat pump ?
We recommend the following sizing ratios depending on the heat pump technology and the low temperature limit of its evaporator: PAC technology Low lim...
Can DualSun SPRING panels be used before or with solar thermal panels?
No , DualSun SPRING panels cannot be used in the same hydraulic loop with thermal solar panels.   We advise the following requirements:  If the setpoi...
How to dimension the expansion tank for a Dualsun installation?
Expansion tank is mandatory with SPRING4 installation.  In order to size it properly you can follow the rule  :  Vexpansion_fluid = Vinstallation x Ce...
How do I choose the best DualSun configuration to heat both my domestic hot water (DHW) and my pool?
There are two possibilities for a solar water heater and pool heating application: solar water heater offer (CESI) + direct pool heating = 2 independe...
What should I prepare for a Dualsun installation in the case of a new construction or a major renovation?
To help you devise your plans or as part of your building permit application, you must take the following into consideration: The physical characteris...
What pre-sizing and pricing ratio could be taken into account for a collective project?
For your projects on a collective building, we let you see the ratio below for a pre-sizing , estimated productivity and pre-cost of your install...