G36MinOAwoEconomizer

Brief Description

G36 minimum outdoor air control when economizer is in lockout

Index Description

  • Section 5.16 in Guideline 36-2021

Datapoints Description

  • temperature_air_outdoor: Outdoor air temperature

  • temperature_air_economizer_limit: Economizer lockout temperature limit

  • position_damper_air_outdoor: Outdoor air damper position

  • position_damper_air_return: Return air damper position

  • flow_volumetric_air_outdoor: Outdoor air volume flow

  • flow_volumetric_air_outdoor_setpoint_min: Minimum outdoor air volume flow setpoint

  • mode_system: System operation mode

Assertions Description

  • if economizer_lockout(temperature_air_outdoor, temperature_air_economizer_limit) and mode_system == ‘occupied’:

  • if flow_volumetric_air_outdoor < flow_volumetric_air_outdoor_setpoint_min (continuously (e.g. fall below the sp for a consecutive 1 hr)):

  • if position_damper_air_outdoor == 100 and position_damper_air_return == 0:

  • pass

  • else:

  • fail

  • elif flow_volumetric_air_outdoor > flow_volumetric_air_outdoor_setpoint_min (continuously):

  • if position_damper_air_outdoor == 0 and position_damper_air_return == 100:

  • pass

  • else:

  • fail

  • else:

  • pass (essentially untested yet)

  • else:

  • untested

Type Verification Description

Rule-based

Assertions Type

Pass