System Availability Managers¶

13 object types from idfpy.models.availability_managers · EnergyPlus 26.2

Object	Summary
AvailabilityManager:DifferentialThermostat	Overrides fan/pump schedules depending on temperature difference between two nodes.
AvailabilityManager:HighTemperatureTurnOff	Overrides fan/pump schedules depending on temperature at sensor node.
AvailabilityManager:HighTemperatureTurnOn	Overrides fan/pump schedules depending on temperature at sensor node.
AvailabilityManager:HybridVentilation	Depending on zone and outdoor conditions overrides window/door opening controls to maximize natural …
AvailabilityManager:LowTemperatureTurnOff	Overrides fan/pump schedules depending on temperature at sensor node.
AvailabilityManager:LowTemperatureTurnOn	Overrides fan/pump schedules depending on temperature at sensor node.
AvailabilityManager:NightCycle	Determines the availability of a loop or system: whether it is on or off.
AvailabilityManager:NightVentilation	depending on zone and outdoor conditions overrides fan schedule to do precooling with outdoor air
AvailabilityManager:OptimumStart	Determines the optimal start of HVAC systems before occupancy.
AvailabilityManager:Scheduled	Determines the availability of a loop or system: whether it is on or off.
AvailabilityManager:ScheduledOff	Determines the availability of a loop or system: only controls the turn off action.
AvailabilityManager:ScheduledOn	Determines the availability of a loop or system: only controls the turn on action.
AvailabilityManagerAssignmentList	Defines the applicable managers used for an AirLoopHVAC or PlantLoop.

AvailabilityManager:DifferentialThermostat¶

from idfpy.models import AvailabilityManagerDifferentialThermostat

Overrides fan/pump schedules depending on temperature difference between two nodes.

Field	Type	Details
`name` Name required	string
`hot_node_name` Hot Node Name required	string
`cold_node_name` Cold Node Name required	string
`temperature_difference_on_limit` Temperature Difference On Limit required	number deltaC
`temperature_difference_off_limit` Temperature Difference Off Limit	number deltaC	Defaults to Temperature Difference On Limit.

Referenced by 1 object types

AvailabilityManagerAssignmentList

AvailabilityManager:HighTemperatureTurnOff¶

from idfpy.models import AvailabilityManagerHighTemperatureTurnOff

Overrides fan/pump schedules depending on temperature at sensor node.

Field	Type	Default	Details
`name` Name required	string
`sensor_node_name` Sensor Node Name required	string
`temperature` Temperature required	number C

Referenced by 1 object types

AvailabilityManagerAssignmentList

AvailabilityManager:HighTemperatureTurnOn¶

from idfpy.models import AvailabilityManagerHighTemperatureTurnOn

Overrides fan/pump schedules depending on temperature at sensor node.

Field	Type	Default	Details
`name` Name required	string
`sensor_node_name` Sensor Node Name required	string
`temperature` Temperature required	number C

Referenced by 1 object types

AvailabilityManagerAssignmentList

AvailabilityManager:HybridVentilation¶

from idfpy.models import AvailabilityManagerHybridVentilation

Depending on zone and outdoor conditions overrides window/door opening controls to maximize natural ventilation and turn off an HVAC system when ventilation control conditions are met. This object (zone ventilation object name) has not been instrumented to work with global Zone or Zone List names option for Ventilation:DesignFlowRate. In order to use, you must enter the single <Ventilation:DesignFlowRate> name in that field. If it is a part of a global ventilation assignment the name will be <Zone Name> <global Ventilation:DesignFlowRate> name. Currently, hybrid ventilation manager is restricted to one per zone. It can either be applied through the air loop or directly to the zone. If hybrid ventilation manager is applied to an air loop and one of the zones served by that air loop also has hybrid ventilation manager, then zone hybrid ventilation manager is disabled.

Field	Type	Default	Details
`name` Name required	string
`hvac_air_loop_name` HVAC Air Loop Name	reference		Enter the name of an AirLoopHVAC or HVACTemplate:System:* object. If this field is left blank, hybrid ventilation managers will be simulated for zone equipment control Names a AirLoopHVAC, HVACTemplate:System:ConstantVolume, HVACTemplate:System:DedicatedOutdoorAir, HVACTemplate:System:DualDuct, HVACTemplate:System:PackagedVAV, HVACTemplate:System:Unitary, HVACTemplate:System:UnitaryHeatPump:AirToAir, HVACTemplate:System:UnitarySystem, HVACTemplate:System:VAV, HVACTemplate:System:VRF
`control_zone_name` Control Zone Name required	reference		the zone name should be a zone where a thermostat or humidistat is located served by an air primary loop. Names a Zone
`ventilation_control_mode_schedule_name` Ventilation Control Mode Schedule Name required	reference		The Ventilation control mode contains appropriate integer control types. 0 - uncontrolled (Natural ventilation and HVAC system are controlled by themselves) 1 = Temperature control 2 = Enthalpy control 3 = Dewpoint control 4 = Outdoor ventilation air control 5 = Operative temperature control with 80% adaptive comfort acceptability limits 6 = Operative temperature control with 90% adaptive comfort acceptability limits 7 = Carbon dioxide control Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`use_weather_file_rain_indicators` Use Weather File Rain Indicators	choice	`Yes`	If Yes, ventilation is shutoff when there is rain If No, there is no rain control One of `No`, `Yes`
`maximum_wind_speed` Maximum Wind Speed	number m/s	`40.0`	this is the wind speed above which ventilation is shutoff Range: ≥ 0, ≤ 40
`minimum_outdoor_temperature` Minimum Outdoor Temperature	number C	`-100.0`	this is the outdoor temperature below which ventilation is shutoff Range: ≥ -100, ≤ 100
`maximum_outdoor_temperature` Maximum Outdoor Temperature	number C	`100.0`	this is the outdoor temperature above which ventilation is shutoff Range: ≥ -100, ≤ 100
`minimum_outdoor_enthalpy` Minimum Outdoor Enthalpy	number J/kg		this is the outdoor Enthalpy below which ventilation is shutoff Range: > 0, < 300000
`maximum_outdoor_enthalpy` Maximum Outdoor Enthalpy	number J/kg		this is the outdoor Enthalpy above which ventilation is shutoff Range: > 0, < 300000
`minimum_outdoor_dewpoint` Minimum Outdoor Dewpoint	number C	`-100.0`	this is the outdoor temperature below which ventilation is shutoff Applicable only if Ventilation Control Mode = 3 Range: ≥ -100, ≤ 100
`maximum_outdoor_dewpoint` Maximum Outdoor Dewpoint	number C	`100.0`	this is the outdoor dewpoint above which ventilation is shutoff Applicable only if Ventilation Control Mode = 3 Range: ≥ -100, ≤ 100
`minimum_outdoor_ventilation_air_schedule_name` Minimum Outdoor Ventilation Air Schedule Name	reference		Used only if Ventilation Control Mode = 4 Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`opening_factor_function_of_wind_speed_curve_name` Opening Factor Function of Wind Speed Curve Name	reference		linear curve = a + bWS quadratic curve = a + bWS + cWS*2 WS = wind speed (m/s) Names a Curve:Cubic, Curve:DoubleExponentialDecay, Curve:Exponent, Curve:ExponentialDecay, Curve:ExponentialSkewNormal, Curve:Functional:PressureDrop, Curve:Linear, Curve:Quadratic, Curve:Quartic, Curve:RectangularHyperbola1, Curve:RectangularHyperbola2, Curve:Sigmoid and 1 more
`airflownetwork_control_type_schedule_name` AirflowNetwork Control Type Schedule Name	reference		The schedule is used to incorporate operation of AirflowNetwork large opening objects and HVAC system operation. Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`simple_airflow_control_type_schedule_name` Simple Airflow Control Type Schedule Name	reference		The schedule is used to incorporate operation of simple airflow objects and HVAC system operation. The simple airflow objects are Ventilation and Mixing only Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`zoneventilation_object_name` ZoneVentilation Object Name	reference		This field has not been instrumented to work with global Zone or Zone List names option for Ventilation:DesignFlowRate. In order to use, you must enter the single <Ventilation:DesignFlowRate> name in this field. If it is a part of a global ventilation assignment the name will be <Zone Name> <global Ventilation:DesignFlowRate> name. The other ZoneVentilation:* and ZoneMixing objects controlled in the same AirLoopHVAC will work in the same way as this ventilation object. Names a ZoneVentilation:DesignFlowRate, ZoneVentilation:WindandStackOpenArea
`minimum_hvac_operation_time` Minimum HVAC Operation Time	number minutes	`0.0`	Minimum operation time when HVAC system is forced on. Range: ≥ 0
`minimum_ventilation_time` Minimum Ventilation Time	number minutes	`0.0`	Minimum ventilation time when natural ventilation is forced on. Range: ≥ 0

Referenced by 1 object types

AvailabilityManagerAssignmentList

AvailabilityManager:LowTemperatureTurnOff¶

from idfpy.models import AvailabilityManagerLowTemperatureTurnOff

Overrides fan/pump schedules depending on temperature at sensor node.

Field	Type	Details
`name` Name required	string
`sensor_node_name` Sensor Node Name required	string
`temperature` Temperature required	number C
`applicability_schedule_name` Applicability Schedule Name	reference	If blank, defaults to always active Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules

Referenced by 1 object types

AvailabilityManagerAssignmentList

AvailabilityManager:LowTemperatureTurnOn¶

from idfpy.models import AvailabilityManagerLowTemperatureTurnOn

Overrides fan/pump schedules depending on temperature at sensor node.

Field	Type	Default	Details
`name` Name required	string
`sensor_node_name` Sensor Node Name required	string
`temperature` Temperature required	number C

Referenced by 1 object types

AvailabilityManagerAssignmentList

AvailabilityManager:NightCycle¶

from idfpy.models import AvailabilityManagerNightCycle

Determines the availability of a loop or system: whether it is on or off. Depending on zone temperatures, overrides Schedules and forces system Fans on.

Field	Type	Default	Details
`name` Name required	string
`applicability_schedule_name` Applicability Schedule Name required	reference		Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`fan_schedule_name` Fan Schedule Name required	reference		Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`control_type` Control Type	choice	`StayOff`	When AvailabilityManager:NightCycle is used in the zone component availability manager assignment list, the key choices for Control Type would only be StayOff and CycleOnControlZone One of `CycleOnAny`, `CycleOnAnyCoolingOrHeatingZone`, `CycleOnAnyCoolingZone`, `CycleOnAnyHeatingZone`, `CycleOnAnyHeatingZoneFansOnly`, `CycleOnAnyZoneFansOnly`, `CycleOnControlZone`, `StayOff`
`thermostat_tolerance` Thermostat Tolerance	number deltaC	`1.0`
`cycling_run_time_control_type` Cycling Run Time Control Type	choice	`FixedRunTime`	One of `FixedRunTime`, `Thermostat`, `ThermostatWithMinimumRunTime`
`cycling_run_time` Cycling Run Time	number s	`3600.0`
`control_zone_or_zone_list_name` Control Zone or Zone List Name	reference		When AvailabilityManager:NightCycle is used in the zone component availability manager assignment list, the Control Zone Name should be the name of the zone in which the zone component is. Names a Zone, ZoneList
`cooling_control_zone_or_zone_list_name` Cooling Control Zone or Zone List Name	reference		Names a Zone, ZoneList
`heating_control_zone_or_zone_list_name` Heating Control Zone or Zone List Name	reference		Names a Zone, ZoneList
`heating_zone_fans_only_zone_or_zone_list_name` Heating Zone Fans Only Zone or Zone List Name	reference		Names a Zone, ZoneList

Referenced by 1 object types

AvailabilityManagerAssignmentList

AvailabilityManager:NightVentilation¶

from idfpy.models import AvailabilityManagerNightVentilation

depending on zone and outdoor conditions overrides fan schedule to do precooling with outdoor air

Field	Type	Default	Details
`name` Name required	string
`applicability_schedule_name` Applicability Schedule Name required	reference		Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`fan_schedule_name` Fan Schedule Name required	reference		Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`ventilation_temperature_schedule_name` Ventilation Temperature Schedule Name	reference		One zone temperature must be above this scheduled temperature for night ventilation to be enabled Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`ventilation_temperature_difference` Ventilation Temperature Difference	number deltaC	`2.0`	The outdoor air temperature minus the control zone temperature must be greater than the ventilation delta T
`ventilation_temperature_low_limit` Ventilation Temperature Low Limit	number C	`15.0`	Night ventilation is disabled if any conditioned zone served by the system falls below this temperature
`night_venting_flow_fraction` Night Venting Flow Fraction	number	`1.0`	the fraction (could be > 1) of the design system Flow Rate at which night ventilation will be done Range: ≥ 0
`control_zone_name` Control Zone Name required	reference		When AvailabilityManager:NightVentilation is used in the zone component availability manager assignment list, the Control Zone Name should be the name of the zone in which the zone component is. Names a Zone

Referenced by 1 object types

AvailabilityManagerAssignmentList

AvailabilityManager:OptimumStart¶

from idfpy.models import AvailabilityManagerOptimumStart

Determines the optimal start of HVAC systems before occupancy.

Field	Type	Default	Details
`name` Name required	string
`applicability_schedule_name` Applicability Schedule Name required	reference		Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`fan_schedule_name` Fan Schedule Name required	reference		Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules
`control_type` Control Type	choice	`ControlZone`	One of `ControlZone`, `MaximumofZoneList`, `StayOff`
`control_zone_name` Control Zone Name	reference		Names a Zone
`zone_list_name` Zone List Name	reference		Names a ZoneList
`maximum_value_for_optimum_start_time` Maximum Value for Optimum Start Time	number hr	`6.0`	this is the maximum number of hours that a system can start before occupancy
`control_algorithm` Control Algorithm	choice	`AdaptiveASHRAE`	One of `AdaptiveASHRAE`, `AdaptiveTemperatureGradient`, `ConstantStartTime`, `ConstantTemperatureGradient`
`constant_temperature_gradient_during_cooling` Constant Temperature Gradient during Cooling	number deltaC/hr
`constant_temperature_gradient_during_heating` Constant Temperature Gradient during Heating	number deltaC/hr
`initial_temperature_gradient_during_cooling` Initial Temperature Gradient during Cooling	number deltaC/hr
`initial_temperature_gradient_during_heating` Initial Temperature Gradient during Heating	number deltaC/hr
`constant_start_time` Constant Start Time	number hr		this is the number of hours before occupancy for a system
`number_of_previous_days` Number of Previous Days	integer days	`2`	this is the number of days that their actual temperature gradients will be used in the AdaptiveTemperatureGradient method Range: ≥ 2, ≤ 5

Referenced by 1 object types

AvailabilityManagerAssignmentList

AvailabilityManager:Scheduled¶

from idfpy.models import AvailabilityManagerScheduled

Determines the availability of a loop or system: whether it is on or off. Schedule overrides fan/pump schedule.

Field	Type	Default	Details
`name` Name required	string
`schedule_name` Schedule Name required	reference		Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules

Referenced by 1 object types

AvailabilityManagerAssignmentList

AvailabilityManager:ScheduledOff¶

from idfpy.models import AvailabilityManagerScheduledOff

Determines the availability of a loop or system: only controls the turn off action. Schedule overrides fan/pump schedule.

Field	Type	Default	Details
`name` Name required	string
`schedule_name` Schedule Name required	reference		Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules

Referenced by 1 object types

AvailabilityManagerAssignmentList

AvailabilityManager:ScheduledOn¶

from idfpy.models import AvailabilityManagerScheduledOn

Determines the availability of a loop or system: only controls the turn on action. Schedule overrides fan/pump schedule.

Field	Type	Default	Details
`name` Name required	string
`schedule_name` Schedule Name required	reference		Names a ExternalInterface:FunctionalMockupUnitExport:To:Schedule, ExternalInterface:FunctionalMockupUnitImport:To:Schedule, ExternalInterface:Schedule, Schedule:Compact, Schedule:Constant, Schedule:File, Schedule:Year, Schedule:Year:Rules

Referenced by 1 object types

AvailabilityManagerAssignmentList

AvailabilityManagerAssignmentList¶

from idfpy.models import AvailabilityManagerAssignmentList extensible

Defines the applicable managers used for an AirLoopHVAC or PlantLoop. The priority of availability managers is based on a set of rules and are specific to the type of loop. The output from each availability manager is an availability status flag: NoAction, ForceOff, CycleOn, or CycleOnZoneFansOnly (used only for air loops).

Field	Type	Default	Details
`name` Name required	string
`managers`	list		Each item: `availability_manager_object_type`, `availability_manager_name`

Referenced by 15 object types

AirLoopHVAC, PlantLoop, ZoneHVAC:EnergyRecoveryVentilator, ZoneHVAC:EvaporativeCoolerUnit, ZoneHVAC:FourPipeFanCoil, ZoneHVAC:HybridUnitaryHVAC, ZoneHVAC:OutdoorAirUnit, ZoneHVAC:PackagedTerminalAirConditioner, ZoneHVAC:PackagedTerminalHeatPump, ZoneHVAC:TerminalUnit:VariableRefrigerantFlow, ZoneHVAC:UnitHeater, ZoneHVAC:UnitVentilator, ZoneHVAC:VentilatedSlab, ZoneHVAC:WaterToAirHeatPump, ZoneHVAC:WindowAirConditioner