G36FreezeProtectionStage3

Brief Description

G36 freeze protection stage 3 (highest) requirements

Index Description

  • Section 5.16.12.3. in Guideline 36-2021

Datapoints Description

  • status_freeze: (optional, set to False if system does not have it) Binary freeze-stat

  • temperature_air_supply: Supply air temperature

  • position_damper_air_outdoor: Outdoor air damper position

  • status_fan_supply: Supply fan status

  • status_fan_return: (optional, set to False if system does not have it) Return fan status

  • status_fan_relief: (optional, set to False if system does not have it) Relief fan status

  • command_coil_cool: Cooling coil command

  • command_coil_heat: Heating coil command

Assertions Description

  • if temperature_air_supply < 3.3 (continuously 15 minutes) or

  • temperature_air_supply < 1 (continuously 5 minutes) or

  • status_freeze == True

  • if not (

  • position_damper_air_outdoor == 0 and

  • status_fan_supply == ‘off’ and

  • status_fan_return == ‘off’ and

  • status_fan_relief == ‘off’ and

  • command_coil_cool == 100 and

  • command_coil_heat > 0

  • ):

  • fail

  • else:

  • pass

  • if never (

  • temperature_air_supply < 3.3 (continuously 15 minutes) or

  • temperature_air_supply < 1 (continuously 5 minutes) or

  • status_freeze == True

  • ):

  • untested

Type Verification Description

Rule-based

Assertions Type

Pass