Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Night cycle manager only overrides the fan schedule value (only if that is Off) to On when zone conditions are favorable. It doesn't determine air flow rates. Timestep or Hourly reporting produce average output values which can easily be misleading and Detailed frequency reporting is the best way to review outputs here. For example, when the fan is made available by night cycle manager, it remains on for entire "Cycling Run Time", then the fan is off for entire zone time step (15 min if Timestep input is 4 and 10 min if Timestep input is 6 etc.). So hourly reporting in this case could easily be misleading. Another way to verify whether night cycle is performing as expected is to report output variable, Availability Manager Night Cycle Control Status along with controlled zone mean air/thermostat temperatures at detailed frequency. If the outputs are not looking as expected, will need to take a closer look at the inputs/results if you can send the idf or attach it here.
