What does the message «No flow rate producer available» mean?
Definition: A component is defined as a flow rate producer when fluid transport between component connections is determined through physical processes in the same components. The following components are flow rate producers: * Pump * Boiler with inbuilt pump * Hot water outlet (in which case a direct connection to the cold water outlet may be thought of to close the fluid loop). So as to obtain defined conditions in all pipings across the hydraulic system flow rate producers should be carefully selected. In a first step Polysun analyses before each simulation the piping and the use of flow rate producers. If these have not been consistently selected the system will need to be reviewed paying particular attention not to use too many or too few pumps within a single loop.
