VAVMinimumTurndownDuringReheat
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Brief Description
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When a vav box is in reheat mode, the ratio of vav airflow rate to vav max airflow rate must not be greater than the min design turndown ratio

Index Description
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   * Section 6.5.2.1 ASHRAE 90.1-2016

Datapoints Description
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   * flag_coil_reheat: VAV box reheat coil operation status
   * flow_volumetric_air_vav: VAV airflow rate
   * flow_volumetric_air_max: VAV maximum airflow rate
   * ratio_turndown_min: Minimum VAV turndown ratio

Type Verification Description
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Rule-based

Assertions Type
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Pass

Assertions Description
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   * if flag_coil_reheat:

   *   if flow_volumetric_air_max == 0:

   *      Untested

   *   if flow_volumetric_air_max > 0.0 and flow_volumetric_air_vav / flow_volumetric_air_max > ratio_turndown_min:

   *      fail

   *   else:

   *      pass

   * else: 

   *     Untested

   * end