...
In ILS mode, the software will make 3 4 important assumptions.
ASSUMPTION 1: The software assumes that the temperature in a dwelling is equal to its setpoint (day or night, dependent on the time), so implicitly it assumes that no comfort issues are applicable
ASSUMPTION 2: The software assumes that the heat demand in a dwelling is equal to the heat loss
ASSUMPTION 3: the software assumes that each dwelling has the same type of radiators, the same type of HIUs, the same thermal losses and the same averaged daytime or nighttime temperature
ASSUMPTION 4: the software assumes that the system is balanced (during the design of the system)
...
Some assumptions are made, resulting in an approximation and not all timing effects are taken into account
Therefore not suitable to assess control stability, hydraulic balance (*), hydraulic interactivity, comfort, individual HIU performance, temperature lack & excess
Requires some attention and knowledge on how to use ILS blocks (see the paragraph ILS errors and common mistakes)
(*) During simulation, the flows are imposed by the ILS solver, so it is not possible to investigate hydraulic imbalance during simulation.
However, during design calculation and optimisation of components, the actual flow rates (as displayed on the pipes) are calculated using RTS,
making it possible to investigate hydraulic balance during design, as you see in the following example.
RTS combined with ILS
...