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

reheat_coil_flag: VAV box reheat coil operation status

V_dot_VAV: VAV airflow rate

V_dot_VAV_max: VAV max airflow rate

VAV_min_turndown_design: design VAV box min turndown ratio

turndown_tol: VAV turndown tolerance

Type Verification Description

Rule-based

Assertions Type

Pass

Assertions Description

if reheat_coil_flag:

if V_dot_VAV_max == 0

Untested

if V_dot_VAV_max > 0.0 and V_dot_VAV / V_dot_VAV_max > VAV_min_turndown_design + turndown_tol

fail

else:

pass

else

Untested

end