VAVMinimumTurndownDuringReheat

Brief Description

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

Section 6.5.2.1 ASHRAE 90.1-2016

Datapoints Description

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

Rule-based

Assertions Type

Pass

Assertions Description

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