[Numbers of Tanks]

Hi, I have a doubt about "numbers of tanks". I don't know if quantity of auxiliar heating equipment increase when I add tanks. I am using A1-DHW system.

I want to use this sketch

["Systems"]

That is correct?

["Systems"]

Hi Frederik

Of course, my question is the following:
What does the program refer to with quantity of Systems? (see picture 1).

And my interpretation is that each system obeys to a line that originates from the reserve tank and circulates through a certain amount of solar collectors (see picture 2).

[Why is it that when I add more collectors from a certain installed power, the energy for domestic hot water is less?]

Hello, thank you for your attention.

First of all I refer to the collectors as the solar energy collection panels. 

On the other hand, my question arises from the results obtained in different variables, done: keeping a number of systems (2), I am adding, in different variables, more collectors (panels) (20, 40, 80 and 162). For variable 1 (20 collectors) the energy given to the hot water system is 19443,44 kWh/year, for variable 2 (40 collectors) the energy given is 25675,71 kWh/year, then the energy starts to be lower! in variable 3 (80 collectors) 22579,54 kWh/year are given and finally in variable 4 (162 collectors) 21815,82 kWh/year are given to the mentioned system. 

Why is the energy lower when ONLY the number of collectors is increased? It should be clarified that this is the only data that varied in the mentioned variables. 

["Systems"]

The "number of systems" can be interpreted as the number of independent lines, starting from the general tank?

[Why is it that when I add more collectors from a certain installed power, the energy for domestic hot water is less?]

 Why is it that when I add more collectors from a certain installed power, the energy for domestic hot water is less?