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To make the VRF terminal night-cycle:
- Create a new schedule that is 0 at night, 1 during the day
- Assign this new schedule to the
Supply Air Fan Operating Mode Schedule
of each VRF terminal.
Background:
According to the ZoneHVAC:TerminalUnit:VariableRefrigerantFlow docs:
Field: Supply Air Fan Operating Mode Schedule
This alpha field defines the name of the supply air fan operating mode schedule. Schedule values equal to 0 denote cycling fan/cycling coil operation. All other schedule values denote constant fan/cycling coil operation.
In OpenStudio, the default schedule for this field is 'Always On Discrete', which always has a value of 1, meaning constant fan/cycling coil operation all the time.