G36MinOAwoEconomizer
Brief Description
G36 minimum outdoor air control when economizer is in lockout
Index Description
Section 5.16 in Guideline 36-2021
Datapoints Description
outdoor_air_temp: outdoor air temperature
economizer_high_limit_sp: economizer lockout high limit set point
outdoor_damper_command: outdoor air damper command
return_damper_command: return air damper command
outdoor_air_flow: outdoor air flow rate
min_oa_sp: minimum outdoor air flow rate setpoint
sys_mode: AHU system mode mode, enumeration of [‘occupied’, ‘unoccupied’, ‘cooldown’, ‘warmup’, ‘setback’, ‘setup’]
Assertions Description
if economizer_lockout(outdoor_air_temp, economizer_high_limit_sp) and sys_mode == ‘occupied’:
if outdoor_air_flow < MinOAsp (continuously (e.g. fall below the sp for a consecutive 1 hr)):
if outdoor_damper_command == 100 and return_damper_command == 0:
pass
else:
fail
elif outdoor_air_flow > MinOAsp (continuously):
if outdoor_damper_command == 0 and return_damper_command == 100:
pass
else:
fail
else:
pass (essentially untested yet)
else:
untested
Type Verification Description
Rule-based
Assertions Type
Pass