G36FreezeProtectionStage3
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Brief Description
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G36 freeze protection stage 3 (highest) requirements

Index Description
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   * Section 5.16.12.3. in Guideline 36-2021

Datapoints Description
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   * 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
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   * 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
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Rule-based

Assertions Type
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Pass