Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV

Sequences for multi zone VAV AHU control

Information

This package contains control sequences from ASHRAE Guideline 36, Section 5.16 for multi zone VAV air handling unit control.

Package Content

Name	Description
Controller	Multizone VAV air handling unit controller
Economizers	Economizer control of multi zone VAV AHU
SetPoints	Output setpoints for AHU control
Validation	Collection of validation models

Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Controller

Multizone VAV air handling unit controller

Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Controller

Information

Block that is applied for multizone VAV AHU control. It outputs the supply fan status and the operation speed, outdoor and return air damper position, supply air temperature setpoint and the valve position of the cooling and heating coils. It is implemented according to the Section 5.16 of ASHRAE Guideline 36, May 2020.

The sequence consists of eight types of subsequences.

Supply fan speed control

The fan speed control is implemented according to Section 5.16.1. It outputs the boolean signal y1SupFan to turn on or off the supply fan. In addition, based on the pressure reset request uZonPreResReq from the VAV zones controller, the sequence resets the duct pressure setpoint, and uses this setpoint to modulate the fan speed ySupFanSpe using a PI controller. See Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplyFan for more detailed description.

Minimum outdoor airflow setting

According to current occupany, supply operation status ySupFan, zone temperatures and the discharge air temperature, the sequence computes the minimum outdoor airflow rate setpoint, which is used as input for the economizer control. More detailed information can be found in Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.

Economizer control

The block outputs outdoor and return air damper position, yOutDamPos and yRetDamPos. First, it computes the position limits to satisfy the minimum outdoor airflow requirement. Second, it determines the availability of the economizer based on the outdoor condition. The dampers are modulated to track the supply air temperature loop signal, which is calculated from the sequence below, subject to the minimum outdoor airflow requirement and economizer availability. See Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Controller for more detailed description.

Supply air temperature setpoint

Based on the Section 5.16.2, the sequence first sets the maximum supply air temperature based on reset requests collected from each zone uZonTemResReq. The outdoor temperature TOut and operation mode uOpeMod are used along with the maximum supply air temperature, for computing the supply air temperature setpoint. See Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplyTemperature for more detailed description.

Coil valve control

The subsequence retrieves supply air temperature setpoint from previous sequence. Along with the measured supply air temperature and the supply fan status, it generates coil valve positions. See Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplySignals for more detailed description.

Freeze protection

Based on the Section 5.16.12, the sequence enables freeze protection if the measured supply air temperature belows certain thresholds. There are three protection stages. See Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.FreezeProtection for more detailed description.

Building pressure control

By selecting different building pressure control designs, which includes using actuated relief damper without fan, using actuated relief dampers with relief fan, using return fan with direct building pressure control, or using return fan with airflow tracking control, the sequences controls relief fans, relief dampers and return fans. See belows sequences for more detailed description:

Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReliefDamper
Relief fan control Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReliefFan is not included in the AHU controller. This sequence controls all the relief fans that are serving one common space, which may include multiple air handling units.
Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReturnFanAirflowTracking
Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReturnFanDirectPressure

Plant request

According to the Section 5.16.16, the sequence send out heating or cooling plant requests if the supply air temperature is below or above threshold value, or the heating or cooling valves have been widely open for certain times. See Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.PlantRequests for more detailed description.

Parameters

Type	Name	Default	Description
EnergyStandard	eneStd		Energy standard, ASHRAE 90.1 or Title 24
VentilationStandard	venStd		Ventilation standard, ASHRAE 62.1 or Title 24
ASHRAEClimateZone	ashCliZon	Buildings.Controls.OBC.ASHRA...	ASHRAE climate zone
Title24ClimateZone	tit24CliZon	Buildings.Controls.OBC.ASHRA...	California Title 24 climate zone
Boolean	have_frePro	true	True: enable freeze protection
FreezeStat	freSta	Buildings.Controls.OBC.ASHRA...	Type of freeze stat
Economizer design
OutdoorAirSection	minOADes	Buildings.Controls.OBC.ASHRA...	Type of outdoor air section
BuildingPressureControlTypes	buiPreCon	Buildings.Controls.OBC.ASHRA...	Type of building pressure control system
Boolean	have_ahuRelFan	true	True: relief fan is part of AHU; False: the relief fans group that may associate multiple AHUs
ControlEconomizer	ecoHigLimCon	Buildings.Controls.OBC.ASHRA...	Economizer high limit control device
System and building parameters
Boolean	have_hotWatCoi	true	True: the AHU has hot water heating coil
Boolean	have_eleHeaCoi	false	True: the AHU has electric heating coil
Boolean	have_perZonRehBox	false	Check if there is any VAV-reheat boxes on perimeter zones
Minimum outdoor air setpoint
Real	VUncDesOutAir_flow	0	Uncorrected design outdoor airflow rate, including diversity where applicable. It can be determined using the 62MZCalc spreadsheet from ASHRAE 62.1 User's Manual [m3/s]
Real	VDesTotOutAir_flow	0	Design total outdoor airflow rate. It can be determined using the 62MZCalc spreadsheet from ASHRAE 62.1 User's Manual [m3/s]
Real	VAbsOutAir_flow	0	Design outdoor airflow rate when all zones with CO2 sensors or occupancy sensors are unpopulated. Needed when complying with Title 24 requirements [m3/s]
Real	VDesOutAir_flow	0	Design minimum outdoor airflow rate with the areas served by the system are occupied at their design population, including diversity where applicable. Needed when complying with Title 24 requirements [m3/s]
Fan speed
Trim and respond for reseting duct static pressure setpoint
Real	pIniSet	120	Initial pressure setpoint for fan speed control [Pa]
Real	pMinSet	25	Minimum pressure setpoint for fan speed control [Pa]
Real	pMaxSet	1000	Duct design maximum static pressure. It is the Max_DSP shown in Section 3.2.1.1 of Guideline 36 [Pa]
Real	pDelTim	600	Delay time after which trim and respond is activated [s]
Real	pSamplePeriod	120	Sample period [s]
Integer	pNumIgnReq	2	Number of ignored requests
Real	pTriAmo	-12.0	Trim amount [Pa]
Real	pResAmo	15	Respond amount (must be opposite in to trim amount) [Pa]
Real	pMaxRes	32	Maximum response per time interval (same sign as respond amount) [Pa]
PID controller
SimpleController	fanSpeCon	Buildings.Controls.OBC.CDL.T...	Supply fan speed PID controller
Real	kFanSpe	0.1	Gain of supply fan speed PID controller [1]
Real	TiFanSpe	60	Time constant of integrator block for supply fan speed PID controller [s]
Real	TdFanSpe	0.1	Time constant of derivative block for supply fan speed PID controller [s]
Real	supFanSpe_min	0.1	Lowest allowed supply fan speed if fan is on
Real	iniFanSpe	supFanSpe_min	Initial speed when fan is enabled. It has to be greater than the lowest allowed speed [1]
Supply air temperature
Temperature limits
Real	TSupCoo_min	285.15	Lowest cooling supply air temperature setpoint when the outdoor air temperature is at the higher value of the reset range and above [K]
Real	TSupCoo_max	291.15	Highest cooling supply air temperature setpoint. It is typically 18 degC (65 degF) in mild and dry climates, 16 degC (60 degF) or lower in humid climates [K]
Real	TOut_min	289.15	Lower value of the outdoor air temperature reset range. Typically value is 16 degC (60 degF) [K]
Real	TOut_max	294.15	Higher value of the outdoor air temperature reset range. Typically value is 21 degC (70 degF) [K]
Real	TSupWarUpSetBac	308.15	Supply temperature in warm up and set back mode [K]
Trim and respond for reseting supply air temperature setpoint
Real	delTimSupTem	600	Delay timer [s]
Real	samPerSupTem	120	Sample period of component [s]
Integer	ignReqSupTem	2	Number of ignorable requests for TrimResponse logic
Real	triAmoSupTem	0.1	Trim amount [K]
Real	resAmoSupTem	-0.2	Response amount [K]
Real	maxResSupTem	-0.6	Maximum response per time interval [K]
Coils
Valves PID controller
SimpleController	valCon	Buildings.Controls.OBC.CDL.T...	Type of controller for coil valves control
Real	kVal	0.05	Gain of controller for valve control [1]
Real	TiVal	600	Time constant of integrator block for valve control [s]
Real	TdVal	0.1	Time constant of derivative block for valve control [s]
Limits
Real	uHeaCoi_max	-0.25	Upper limit of controller signal when heating coil is off. Require -1 < uHea_max < uCoo_min < 1.
Real	uCooCoi_min	0.25	Lower limit of controller signal when cooling coil is off. Require -1 < uHea_max < uCoo_min < 1.
Economizer
Limits, separated with AFMS
SimpleController	minOAConTyp	Buildings.Controls.OBC.CDL.T...	Type of minimum outdoor air controller
Real	kMinOA	0.03	Gain of controller [1]
Real	TiMinOA	120	Time constant of integrator block [s]
Real	TdMinOA	0.1	Time constant of derivative block [s]
Limits, separated with DP
Boolean	have_CO2Sen	false	True: some zones have CO2 sensor
Real	dpAbsMinOutDam	5	Absolute minimum pressure difference across the minimum outdoor air damper. It provides the absolute minimum outdoor airflow
Real	dpDesMinOutDam	20	Design minimum pressure difference across the minimum outdoor air damper. It provides the design minimum outdoor airflow [Pa]
SimpleController	dpConTyp	Buildings.Controls.OBC.CDL.T...	Type of differential pressure setpoint controller
Real	kDp	1	Gain of controller [1]
Real	TiDp	0.5	Time constant of integrator block [s]
Real	TdDp	0.1	Time constant of derivative block [s]
Limits, Common
Real	uRetDam_min	0.5	Loop signal value to start decreasing the maximum return air damper position [1]
Enable
Real	delTOutHis	1	Delta between the temperature hysteresis high and low limit [K]
Real	delEntHis	1000	Delta between the enthalpy hysteresis high and low limits [J/kg]
Real	retDamFulOpeTim	180	Time period to keep return air damper fully open before releasing it for minimum outdoor airflow control at disable to avoid pressure fluctuations [s]
Real	disDel	15	Short time delay before closing the outdoor air damper at disable to avoid pressure fluctuations [s]
Commissioning, limits
Real	retDamPhy_max	1.0	Physically fixed maximum position of the return air damper [1]
Real	retDamPhy_min	0.0	Physically fixed minimum position of the return air damper [1]
Real	outDamPhy_max	1.0	Physically fixed maximum position of the outdoor air damper [1]
Real	outDamPhy_min	0.0	Physically fixed minimum position of the outdoor air damper [1]
Real	minOutDamPhy_max	1.0	Physically fixed maximum position of the minimum outdoor air damper [1]
Real	minOutDamPhy_min	0.0	Physically fixed minimum position of the minimum outdoor air damper [1]
Commissioning, modulation
Real	uHeaMax	-0.25	Lower limit of controller input when outdoor damper opens (see diagram) [1]
Real	uCooMin	+0.25	Upper limit of controller input when return damper is closed (see diagram) [1]
Freeze protection
Integer	minHotWatReq	2	Minimum heating hot-water plant request to active the heating plant
Heating coil PID Controller
SimpleController	freProHeaCoiCon	Buildings.Controls.OBC.CDL.T...	Freeze protection heating coil controller
Real	kFrePro	0.05	Gain of coil controller [1]
Real	TiFrePro	120	Time constant of integrator block [s]
Real	TdFrePro	0.1	Time constant of derivative block [s]
Real	yMaxFrePro	1	Upper limit of output
Real	yMinFrePro	0	Lower limit of output
Pressure control
Real	dpBuiSet	12	Building static pressure difference relative to ambient (positive to pressurize the building) [Pa]
Relief damper
Real	kRelDam	0.5	Gain, applied to building pressure control error normalized with dpBuiSet [1]
Return fan
Real	difFloSet	0.1	Airflow differential between supply air and return air fans required to maintain building pressure at desired pressure [m3/s]
SimpleController	retFanCon	Buildings.Controls.OBC.CDL.T...	Type of controller for return fan
Real	kRetFan	1	Gain, normalized using dpBuiSet [1]
Real	TiRetFan	0.5	Time constant of integrator block [s]
Real	TdRetFan	0.1	Time constant of derivative block [s]
Real	retFanSpe_min	0.1	Minimum return fan speed
Real	p_rel_RetFan_min	2.4	Minimum return fan discharge static pressure difference setpoint [Pa]
Real	p_rel_RetFan_max	40	Maximum return fan discharge static pressure difference setpoint [Pa]
Relief fan
Real	relFanSpe_min	0.1	Relief fan minimum speed
Real	kRelFan	1	Gain of relief fan controller, normalized using dpBuiSet [1]
Advanced
Real	Thys	0.25	Hysteresis for checking temperature difference
Real	posHys	0.01	Hysteresis for checking valve position difference
Real	hys	0.005	Hysteresis for checking the relief fan controller output value

Connectors

Type	Name	Description
input IntegerInput	uAhuOpeMod	Operation mode for AHU operation
input IntegerInput	uZonPreResReq	Zone static pressure reset requests
input RealInput	dpDuc	Measured duct static pressure [Pa]
input RealInput	TOut	Outdoor air temperature [K]
input IntegerInput	uZonTemResReq	Zone cooling supply air temperature reset request
input BooleanInput	u1SupFan	Supply fan status
input RealInput	TAirSup	Measured supply air temperature [K]
input RealInput	VSumAdjPopBreZon_flow	Sum of the adjusted population component breathing zone flow rate [m3/s]
input RealInput	VSumAdjAreBreZon_flow	Sum of the adjusted area component breathing zone flow rate [m3/s]
input RealInput	VSumZonPri_flow	Sum of the zone primary airflow rates for all zones in all zone groups that are in occupied mode [m3/s]
input RealInput	uOutAirFra_max	Maximum zone outdoor air fraction, equals to the maximum of primary outdoor air fraction of all zones [1]
input RealInput	VSumZonAbsMin_flow	Sum of the zone absolute minimum outdoor airflow setpoint [m3/s]
input RealInput	VSumZonDesMin_flow	Sum of the zone design minimum outdoor airflow setpoint [m3/s]
input RealInput	VAirOut_flow	Measured outdoor air volumetric flow rate [m3/s]
input RealInput	uCO2Loo_max	Maximum zone CO2 control loop output [1]
input RealInput	dpMinOutDam	Measured pressure difference across the minimum outdoor air damper [Pa]
input RealInput	TAirRet	Used only for fixed plus differential dry bulb temperature high limit cutoff [K]
input RealInput	hAirOut	Outdoor air enthalpy [J/kg]
input RealInput	hAirRet	OA enthalpy high limit cutoff. For differential enthalpy use return air enthalpy measurement [J/kg]
input BooleanInput	u1FreSta	Freeze protection stat signal. The stat is normally close (the input is normally true), when enabling freeze protection, the input becomes false
input BooleanInput	u1SofSwiRes	Freeze protection reset signal from software switch
input BooleanInput	u1RelFan	Relief fan status
input RealInput	TAirMix	Measured mixed air temperature [K]
input RealInput	dpBui	Measured building static pressure difference, relative to ambient (positive if pressurized) [Pa]
input RealInput	VAirSup_flow	Measured AHU supply airflow rate [m3/s]
input RealInput	VAirRet_flow	Measured AHU return airflow rate [m3/s]
input RealInput	uCooCoi_actual	Actual cooling coil valve position [1]
input RealInput	uHeaCoi_actual	Actual heating coil valve position [1]
output RealOutput	TAirSupSet	AHU supply air temperature setpoint [K]
output RealOutput	VEffAirOut_flow_min	Effective minimum outdoor airflow setpoint [m3/s]
output RealOutput	yMinOutDam	Minimum outdoor air damper commanded position [1]
output BooleanOutput	y1MinOutDam	Minimum outdoor air damper command on
output RealOutput	yRetDam	Return air damper commanded position [1]
output RealOutput	yRelDam	Relief air damper commanded position [1]
output RealOutput	yOutDam	Economizer outdoor air damper commanded position [1]
output BooleanOutput	y1EneCHWPum	Commanded on to energize chilled water pump
output BooleanOutput	y1SupFan	Supply fan command on
output RealOutput	ySupFan	Air handler supply fan commanded speed [1]
output BooleanOutput	y1RetFan	Return fan commanded on
output RealOutput	yRetFan	Return fan commanded speed [1]
output BooleanOutput	y1RelFan	Relief fan commanded on
output RealOutput	yRelFan	Relief fan commanded speed [1]
output RealOutput	yCooCoi	Cooling coil valve commanded position [1]
output RealOutput	yHeaCoi	Heating coil valve commanded position [1]
output IntegerOutput	yAla	Alarm level
output RealOutput	yDpBui	Building static pressure difference, relative to ambient (positive if pressurized) [Pa]
output RealOutput	dpDisSet	Return fan discharge static pressure setpoint [Pa]
output IntegerOutput	yChiWatResReq	Chilled water reset request
output IntegerOutput	yChiPlaReq	Chiller plant request
output IntegerOutput	yHotWatResReq	Hot water reset request
output IntegerOutput	yHotWatPlaReq	Hot water plant request

Modelica definition

block Controller "Multizone VAV air handling unit controller" parameter Buildings.Controls.OBC.ASHRAE.G36.Types.EnergyStandard eneStd "Energy standard, ASHRAE 90.1 or Title 24"; parameter Types.VentilationStandard venStd "Ventilation standard, ASHRAE 62.1 or Title 24"; parameter Buildings.Controls.OBC.ASHRAE.G36.Types.ASHRAEClimateZone ashCliZon=Buildings.Controls.OBC.ASHRAE.G36.Types.ASHRAEClimateZone.Not_Specified "ASHRAE climate zone"; parameter Buildings.Controls.OBC.ASHRAE.G36.Types.Title24ClimateZone tit24CliZon=Buildings.Controls.OBC.ASHRAE.G36.Types.Title24ClimateZone.Not_Specified "California Title 24 climate zone"; parameter Boolean have_frePro=true "True: enable freeze protection"; parameter Buildings.Controls.OBC.ASHRAE.G36.Types.FreezeStat freSta=Buildings.Controls.OBC.ASHRAE.G36.Types.FreezeStat.No_freeze_stat "Type of freeze stat"; parameter Buildings.Controls.OBC.ASHRAE.G36.Types.OutdoorAirSection minOADes=Buildings.Controls.OBC.ASHRAE.G36.Types.OutdoorAirSection.DedicatedDampersAirflow "Type of outdoor air section"; parameter Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes buiPreCon=Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.BarometricRelief "Type of building pressure control system"; parameter Boolean have_ahuRelFan=true "True: relief fan is part of AHU; False: the relief fans group that may associate multiple AHUs"; parameter Buildings.Controls.OBC.ASHRAE.G36.Types.ControlEconomizer ecoHigLimCon= Buildings.Controls.OBC.ASHRAE.G36.Types.ControlEconomizer.FixedDryBulb "Economizer high limit control device"; parameter Boolean have_hotWatCoi=true "True: the AHU has hot water heating coil"; parameter Boolean have_eleHeaCoi=false "True: the AHU has electric heating coil"; parameter Boolean have_perZonRehBox=false "Check if there is any VAV-reheat boxes on perimeter zones"; parameter Real VUncDesOutAir_flow(unit="m3/s")=0 "Uncorrected design outdoor airflow rate, including diversity where applicable. It can be determined using the 62MZCalc spreadsheet from ASHRAE 62.1 User's Manual"; parameter Real VDesTotOutAir_flow(unit="m3/s")=0 "Design total outdoor airflow rate. It can be determined using the 62MZCalc spreadsheet from ASHRAE 62.1 User's Manual"; parameter Real VAbsOutAir_flow(unit="m3/s")=0 "Design outdoor airflow rate when all zones with CO2 sensors or occupancy sensors are unpopulated. Needed when complying with Title 24 requirements"; parameter Real VDesOutAir_flow(unit="m3/s")=0 "Design minimum outdoor airflow rate with the areas served by the system are occupied at their design population, including diversity where applicable. Needed when complying with Title 24 requirements"; // ----------- parameters for fan speed control ----------- parameter Real pIniSet( unit="Pa", displayUnit="Pa")=120 "Initial pressure setpoint for fan speed control"; parameter Real pMinSet( unit="Pa", displayUnit="Pa")=25 "Minimum pressure setpoint for fan speed control"; parameter Real pMaxSet( unit="Pa", displayUnit="Pa")=1000 "Duct design maximum static pressure. It is the Max_DSP shown in Section 3.2.1.1 of Guideline 36"; parameter Real pDelTim(unit="s")=600 "Delay time after which trim and respond is activated"; parameter Real pSamplePeriod(unit="s")=120 "Sample period"; parameter Integer pNumIgnReq=2 "Number of ignored requests"; parameter Real pTriAmo( unit="Pa", displayUnit="Pa")=-12.0 "Trim amount"; parameter Real pResAmo( unit="Pa", displayUnit="Pa")=15 "Respond amount (must be opposite in to trim amount)"; parameter Real pMaxRes( unit="Pa", displayUnit="Pa")=32 "Maximum response per time interval (same sign as respond amount)"; parameter Buildings.Controls.OBC.CDL.Types.SimpleController fanSpeCon=Buildings.Controls.OBC.CDL.Types.SimpleController.PI "Supply fan speed PID controller"; parameter Real kFanSpe(unit="1")=0.1 "Gain of supply fan speed PID controller"; parameter Real TiFanSpe(unit="s")=60 "Time constant of integrator block for supply fan speed PID controller"; parameter Real TdFanSpe(unit="s")=0.1 "Time constant of derivative block for supply fan speed PID controller"; final parameter Real supFanSpe_max=1 "Maximum allowed supply fan speed"; parameter Real supFanSpe_min=0.1 "Lowest allowed supply fan speed if fan is on"; parameter Real iniFanSpe(min=supFanSpe_min, max=1, unit="1") = supFanSpe_min "Initial speed when fan is enabled. It has to be greater than the lowest allowed speed"; // ----------- parameters for supply air temperature control ----------- parameter Real TSupCoo_min( unit="K", displayUnit="degC")=285.15 "Lowest cooling supply air temperature setpoint when the outdoor air temperature is at the higher value of the reset range and above"; parameter Real TSupCoo_max( unit="K", displayUnit="degC")=291.15 "Highest cooling supply air temperature setpoint. It is typically 18 degC (65 degF) in mild and dry climates, 16 degC (60 degF) or lower in humid climates"; parameter Real TOut_min( unit="K", displayUnit="degC")=289.15 "Lower value of the outdoor air temperature reset range. Typically value is 16 degC (60 degF)"; parameter Real TOut_max( unit="K", displayUnit="degC")=294.15 "Higher value of the outdoor air temperature reset range. Typically value is 21 degC (70 degF)"; parameter Real TSupWarUpSetBac( unit="K", displayUnit="degC")=308.15 "Supply temperature in warm up and set back mode"; parameter Real delTimSupTem(unit="s")=600 "Delay timer"; parameter Real samPerSupTem(unit="s")=120 "Sample period of component"; parameter Integer ignReqSupTem=2 "Number of ignorable requests for TrimResponse logic"; parameter Real triAmoSupTem( unit="K", displayUnit="K")=0.1 "Trim amount"; parameter Real resAmoSupTem( unit="K", displayUnit="K")=-0.2 "Response amount"; parameter Real maxResSupTem( unit="K", displayUnit="K")=-0.6 "Maximum response per time interval"; // ----------- parameters for heating and cooling coil control ----------- parameter Buildings.Controls.OBC.CDL.Types.SimpleController valCon=Buildings.Controls.OBC.CDL.Types.SimpleController.PI "Type of controller for coil valves control"; parameter Real kVal(unit="1")=0.05 "Gain of controller for valve control"; parameter Real TiVal(unit="s")=600 "Time constant of integrator block for valve control"; parameter Real TdVal(unit="s")=0.1 "Time constant of derivative block for valve control"; parameter Real uHeaCoi_max=-0.25 "Upper limit of controller signal when heating coil is off. Require -1 < uHea_max < uCoo_min < 1."; parameter Real uCooCoi_min=0.25 "Lower limit of controller signal when cooling coil is off. Require -1 < uHea_max < uCoo_min < 1."; // ----------- parameters for economizer control ----------- // Limits parameter Buildings.Controls.OBC.CDL.Types.SimpleController minOAConTyp= Buildings.Controls.OBC.CDL.Types.SimpleController.PI "Type of minimum outdoor air controller"; parameter Real kMinOA(unit="1")=0.03 "Gain of controller"; parameter Real TiMinOA(unit="s")=120 "Time constant of integrator block"; parameter Real TdMinOA(unit="s")=0.1 "Time constant of derivative block"; parameter Boolean have_CO2Sen=false "True: some zones have CO2 sensor"; parameter Real dpAbsMinOutDam=5 "Absolute minimum pressure difference across the minimum outdoor air damper. It provides the absolute minimum outdoor airflow"; parameter Real dpDesMinOutDam(unit="Pa")=20 "Design minimum pressure difference across the minimum outdoor air damper. It provides the design minimum outdoor airflow"; parameter Buildings.Controls.OBC.CDL.Types.SimpleController dpConTyp= Buildings.Controls.OBC.CDL.Types.SimpleController.PI "Type of differential pressure setpoint controller"; parameter Real kDp(unit="1")=1 "Gain of controller"; parameter Real TiDp(unit="s")=0.5 "Time constant of integrator block"; parameter Real TdDp(unit="s")=0.1 "Time constant of derivative block"; parameter Real uRetDam_min(unit="1")=0.5 "Loop signal value to start decreasing the maximum return air damper position"; // Enable parameter Real delTOutHis( unit="K", displayUnit="K")=1 "Delta between the temperature hysteresis high and low limit"; parameter Real delEntHis(unit="J/kg")=1000 "Delta between the enthalpy hysteresis high and low limits"; parameter Real retDamFulOpeTim(unit="s")=180 "Time period to keep return air damper fully open before releasing it for minimum outdoor airflow control at disable to avoid pressure fluctuations"; parameter Real disDel(unit="s")=15 "Short time delay before closing the outdoor air damper at disable to avoid pressure fluctuations"; // Commissioning parameter Real retDamPhy_max(unit="1")=1.0 "Physically fixed maximum position of the return air damper"; parameter Real retDamPhy_min(unit="1")=0.0 "Physically fixed minimum position of the return air damper"; parameter Real outDamPhy_max(unit="1")=1.0 "Physically fixed maximum position of the outdoor air damper"; parameter Real outDamPhy_min(unit="1")=0.0 "Physically fixed minimum position of the outdoor air damper"; parameter Real minOutDamPhy_max(unit="1")=1.0 "Physically fixed maximum position of the minimum outdoor air damper"; parameter Real minOutDamPhy_min(unit="1")=0.0 "Physically fixed minimum position of the minimum outdoor air damper"; parameter Real uHeaMax(unit="1")=-0.25 "Lower limit of controller input when outdoor damper opens (see diagram)"; parameter Real uCooMin(unit="1")=+0.25 "Upper limit of controller input when return damper is closed (see diagram)"; // ----------- parameters for freeze protection ----------- parameter Integer minHotWatReq=2 "Minimum heating hot-water plant request to active the heating plant"; parameter Buildings.Controls.OBC.CDL.Types.SimpleController freProHeaCoiCon= Buildings.Controls.OBC.CDL.Types.SimpleController.PI "Freeze protection heating coil controller"; parameter Real kFrePro(unit="1")=0.05 "Gain of coil controller"; parameter Real TiFrePro(unit="s")=120 "Time constant of integrator block"; parameter Real TdFrePro(unit="s")=0.1 "Time constant of derivative block"; parameter Real yMaxFrePro=1 "Upper limit of output"; parameter Real yMinFrePro=0 "Lower limit of output"; // ----------- Building pressure control parameters ----------- parameter Real dpBuiSet( unit="Pa", displayUnit="Pa")=12 "Building static pressure difference relative to ambient (positive to pressurize the building)"; parameter Real kRelDam(unit="1")=0.5 "Gain, applied to building pressure control error normalized with dpBuiSet"; // parameter Real kRelFan(unit="1")=1 // "Gain, normalized using dpBuiSet" // annotation (Dialog(tab="Pressure control", group="Relief fans", // enable=buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan)); // parameter Real minSpeRelFan(unit="1")=0.1 // "Minimum relief fan speed" // annotation (Dialog(tab="Pressure control", group="Relief fans", // enable=buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan)); parameter Real difFloSet(unit="m3/s")=0.1 "Airflow differential between supply air and return air fans required to maintain building pressure at desired pressure"; parameter Buildings.Controls.OBC.CDL.Types.SimpleController retFanCon=Buildings.Controls.OBC.CDL.Types.SimpleController.PI "Type of controller for return fan"; parameter Real kRetFan(unit="1")=1 "Gain, normalized using dpBuiSet"; parameter Real TiRetFan(unit="s")=0.5 "Time constant of integrator block"; parameter Real TdRetFan(unit="s")=0.1 "Time constant of derivative block"; final parameter Real retFanSpe_max=1 "Maximum return fan speed"; parameter Real retFanSpe_min=0.1 "Minimum return fan speed"; parameter Real p_rel_RetFan_min( unit="Pa", displayUnit="Pa")=2.4 "Minimum return fan discharge static pressure difference setpoint"; parameter Real p_rel_RetFan_max( unit="Pa", displayUnit="Pa")=40 "Maximum return fan discharge static pressure difference setpoint"; parameter Real relFanSpe_min( final min=0, final max=1)= 0.1 "Relief fan minimum speed"; parameter Real kRelFan(unit="1")=1 "Gain of relief fan controller, normalized using dpBuiSet"; // ----------- Advanced parameters ----------- parameter Real Thys=0.25 "Hysteresis for checking temperature difference"; parameter Real posHys=0.01 "Hysteresis for checking valve position difference"; parameter Real hys = 0.005 "Hysteresis for checking the relief fan controller output value"; Buildings.Controls.OBC.CDL.Interfaces.IntegerInput uAhuOpeMod "Operation mode for AHU operation"; Buildings.Controls.OBC.CDL.Interfaces.IntegerInput uZonPreResReq "Zone static pressure reset requests"; Buildings.Controls.OBC.CDL.Interfaces.RealInput dpDuc( final unit="Pa", displayUnit="Pa", final quantity="PressureDifference") "Measured duct static pressure"; Buildings.Controls.OBC.CDL.Interfaces.RealInput TOut( final unit="K", displayUnit="degC", final quantity="ThermodynamicTemperature") "Outdoor air temperature"; Buildings.Controls.OBC.CDL.Interfaces.IntegerInput uZonTemResReq "Zone cooling supply air temperature reset request"; Buildings.Controls.OBC.CDL.Interfaces.BooleanInput u1SupFan "Supply fan status"; Buildings.Controls.OBC.CDL.Interfaces.RealInput TAirSup( final unit="K", displayUnit="degC", final quantity="ThermodynamicTemperature") "Measured supply air temperature"; Buildings.Controls.OBC.CDL.Interfaces.RealInput VSumAdjPopBreZon_flow( final min=0, final unit="m3/s", final quantity="VolumeFlowRate") if venStd == Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.ASHRAE62_1 "Sum of the adjusted population component breathing zone flow rate"; Buildings.Controls.OBC.CDL.Interfaces.RealInput VSumAdjAreBreZon_flow( final min=0, final unit="m3/s", final quantity="VolumeFlowRate") if venStd == Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.ASHRAE62_1 "Sum of the adjusted area component breathing zone flow rate"; Buildings.Controls.OBC.CDL.Interfaces.RealInput VSumZonPri_flow( final min=0, final unit="m3/s", final quantity="VolumeFlowRate") if venStd == Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.ASHRAE62_1 "Sum of the zone primary airflow rates for all zones in all zone groups that are in occupied mode"; Buildings.Controls.OBC.CDL.Interfaces.RealInput uOutAirFra_max( final min=0, final unit="1") if venStd == Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.ASHRAE62_1 "Maximum zone outdoor air fraction, equals to the maximum of primary outdoor air fraction of all zones"; Buildings.Controls.OBC.CDL.Interfaces.RealInput VSumZonAbsMin_flow( final min=0, final unit="m3/s", final quantity="VolumeFlowRate") if venStd == Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.California_Title_24 "Sum of the zone absolute minimum outdoor airflow setpoint"; Buildings.Controls.OBC.CDL.Interfaces.RealInput VSumZonDesMin_flow( final min=0, final unit="m3/s", final quantity="VolumeFlowRate") if venStd == Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.California_Title_24 "Sum of the zone design minimum outdoor airflow setpoint"; Buildings.Controls.OBC.CDL.Interfaces.RealInput VAirOut_flow( final min=0, final unit="m3/s", final quantity="VolumeFlowRate") if (minOADes == Buildings.Controls.OBC.ASHRAE.G36.Types.OutdoorAirSection.DedicatedDampersAirflow or minOADes == Buildings.Controls.OBC.ASHRAE.G36.Types.OutdoorAirSection.SingleDamper) "Measured outdoor air volumetric flow rate"; Buildings.Controls.OBC.CDL.Interfaces.RealInput uCO2Loo_max( final unit="1") if (have_CO2Sen and venStd == Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.California_Title_24) "Maximum zone CO2 control loop output"; Buildings.Controls.OBC.CDL.Interfaces.RealInput dpMinOutDam( final unit="Pa", displayUnit="Pa", final quantity="PressureDifference") if minOADes == Buildings.Controls.OBC.ASHRAE.G36.Types.OutdoorAirSection.DedicatedDampersPressure "Measured pressure difference across the minimum outdoor air damper"; Buildings.Controls.OBC.CDL.Interfaces.RealInput TAirRet( final unit="K", displayUnit="degC", final quantity="ThermodynamicTemperature") if ecoHigLimCon == Buildings.Controls.OBC.ASHRAE.G36.Types.ControlEconomizer.DifferentialDryBulb "Used only for fixed plus differential dry bulb temperature high limit cutoff"; Buildings.Controls.OBC.CDL.Interfaces.RealInput hAirOut( final unit="J/kg", final quantity="SpecificEnergy") if (ecoHigLimCon == Buildings.Controls.OBC.ASHRAE.G36.Types.ControlEconomizer.DifferentialEnthalpyWithFixedDryBulb or ecoHigLimCon == Buildings.Controls.OBC.ASHRAE.G36.Types.ControlEconomizer.FixedEnthalpyWithFixedDryBulb) "Outdoor air enthalpy"; Buildings.Controls.OBC.CDL.Interfaces.RealInput hAirRet( final unit="J/kg", final quantity="SpecificEnergy") if (eneStd == Buildings.Controls.OBC.ASHRAE.G36.Types.EnergyStandard.ASHRAE90_1 and ecoHigLimCon == Buildings.Controls.OBC.ASHRAE.G36.Types.ControlEconomizer.DifferentialEnthalpyWithFixedDryBulb) "OA enthalpy high limit cutoff. For differential enthalpy use return air enthalpy measurement"; Buildings.Controls.OBC.CDL.Interfaces.BooleanInput u1FreSta if freSta == Buildings.Controls.OBC.ASHRAE.G36.Types.FreezeStat.Hardwired_to_BAS "Freeze protection stat signal. The stat is normally close (the input is normally true), when enabling freeze protection, the input becomes false"; Buildings.Controls.OBC.CDL.Interfaces.BooleanInput u1SofSwiRes if (freSta == Buildings.Controls.OBC.ASHRAE.G36.Types.FreezeStat.No_freeze_stat or freSta == Buildings.Controls.OBC.ASHRAE.G36.Types.FreezeStat.Hardwired_to_equipment) "Freeze protection reset signal from software switch"; Buildings.Controls.OBC.CDL.Interfaces.BooleanInput u1RelFan if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan and not have_ahuRelFan "Relief fan status"; Buildings.Controls.OBC.CDL.Interfaces.RealInput TAirMix( final unit="K", displayUnit="degC", final quantity="ThermodynamicTemperature") if have_hotWatCoi "Measured mixed air temperature"; Buildings.Controls.OBC.CDL.Interfaces.RealInput dpBui( final unit="Pa", displayUnit="Pa", final quantity="PressureDifference") if (buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefDamper or buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan or buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanDp) "Measured building static pressure difference, relative to ambient (positive if pressurized)"; Buildings.Controls.OBC.CDL.Interfaces.RealInput VAirSup_flow( final min=0, final unit="m3/s", final quantity="VolumeFlowRate") if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanMeasuredAir "Measured AHU supply airflow rate"; Buildings.Controls.OBC.CDL.Interfaces.RealInput VAirRet_flow( final min=0, final unit="m3/s", final quantity="VolumeFlowRate") if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanMeasuredAir "Measured AHU return airflow rate"; Buildings.Controls.OBC.CDL.Interfaces.RealInput uCooCoi_actual( final min=0, final max=1, final unit="1") "Actual cooling coil valve position"; Buildings.Controls.OBC.CDL.Interfaces.RealInput uHeaCoi_actual( final min=0, final max=1, final unit="1") if have_hotWatCoi "Actual heating coil valve position"; Buildings.Controls.OBC.CDL.Interfaces.RealOutput TAirSupSet( final unit="K", displayUnit="degC", final quantity="ThermodynamicTemperature") "AHU supply air temperature setpoint"; Buildings.Controls.OBC.CDL.Interfaces.RealOutput VEffAirOut_flow_min( final min=0, final unit="m3/s", final quantity="VolumeFlowRate") if venStd == Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.ASHRAE62_1 "Effective minimum outdoor airflow setpoint"; Buildings.Controls.OBC.CDL.Interfaces.RealOutput yMinOutDam( final min=0, final max=1, final unit="1") if minOADes == Buildings.Controls.OBC.ASHRAE.G36.Types.OutdoorAirSection.DedicatedDampersAirflow "Minimum outdoor air damper commanded position"; Buildings.Controls.OBC.CDL.Interfaces.BooleanOutput y1MinOutDam if minOADes == Buildings.Controls.OBC.ASHRAE.G36.Types.OutdoorAirSection.DedicatedDampersPressure "Minimum outdoor air damper command on"; Buildings.Controls.OBC.CDL.Interfaces.RealOutput yRetDam( final min=0, final max=1, final unit="1") "Return air damper commanded position"; Buildings.Controls.OBC.CDL.Interfaces.RealOutput yRelDam( final min=0, final max=1, final unit="1") if not ((buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan and not have_ahuRelFan) or buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.BarometricRelief) "Relief air damper commanded position"; Buildings.Controls.OBC.CDL.Interfaces.RealOutput yOutDam( final min=0, final max=1, final unit="1") "Economizer outdoor air damper commanded position"; Buildings.Controls.OBC.CDL.Interfaces.BooleanOutput y1EneCHWPum if have_frePro "Commanded on to energize chilled water pump"; Buildings.Controls.OBC.CDL.Interfaces.BooleanOutput y1SupFan "Supply fan command on"; Buildings.Controls.OBC.CDL.Interfaces.RealOutput ySupFan( final min=0, final max=1, final unit="1") "Air handler supply fan commanded speed"; Buildings.Controls.OBC.CDL.Interfaces.BooleanOutput y1RetFan if (buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanMeasuredAir or buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanDp) "Return fan commanded on"; Buildings.Controls.OBC.CDL.Interfaces.RealOutput yRetFan( final min=0, final max=1, final unit="1") if (buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanMeasuredAir or buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanDp) "Return fan commanded speed"; Buildings.Controls.OBC.CDL.Interfaces.BooleanOutput y1RelFan if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan "Relief fan commanded on"; Buildings.Controls.OBC.CDL.Interfaces.RealOutput yRelFan( final min=0, final max=1, final unit="1") if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan "Relief fan commanded speed"; Buildings.Controls.OBC.CDL.Interfaces.RealOutput yCooCoi( final min=0, final max=1, final unit="1") "Cooling coil valve commanded position"; Buildings.Controls.OBC.CDL.Interfaces.RealOutput yHeaCoi( final min=0, final max=1, final unit="1") if have_hotWatCoi "Heating coil valve commanded position"; Buildings.Controls.OBC.CDL.Interfaces.IntegerOutput yAla if have_frePro "Alarm level"; Buildings.Controls.OBC.CDL.Interfaces.RealOutput yDpBui( final unit="Pa", displayUnit="Pa", final quantity="PressureDifference") if (buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan and have_ahuRelFan) or buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanDp "Building static pressure difference, relative to ambient (positive if pressurized)"; Buildings.Controls.OBC.CDL.Interfaces.RealOutput dpDisSet( final unit="Pa", displayUnit="Pa", final quantity="PressureDifference") if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanDp "Return fan discharge static pressure setpoint"; Buildings.Controls.OBC.CDL.Interfaces.IntegerOutput yChiWatResReq "Chilled water reset request"; Buildings.Controls.OBC.CDL.Interfaces.IntegerOutput yChiPlaReq "Chiller plant request"; Buildings.Controls.OBC.CDL.Interfaces.IntegerOutput yHotWatResReq if have_hotWatCoi "Hot water reset request"; Buildings.Controls.OBC.CDL.Interfaces.IntegerOutput yHotWatPlaReq if have_hotWatCoi "Hot water plant request"; Buildings.Controls.OBC.CDL.Integers.GreaterThreshold freProMod "Check if it is in freeze protection mode"; Buildings.Controls.OBC.CDL.Integers.Switch intSwi if have_hotWatCoi "Hot water plant request"; Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.FreezeProtection frePro( final have_frePro=have_frePro, final buiPreCon=buiPreCon, final minOADes=minOADes, final freSta=freSta, final have_hotWatCoi=have_hotWatCoi, final minHotWatReq=minHotWatReq, final heaCoiCon=freProHeaCoiCon, final k=kFrePro, final Ti=TiFrePro, final Td=TdFrePro, final yMax=yMaxFrePro, final yMin=yMinFrePro, final Thys=Thys) "Freeze protection"; Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.PlantRequests plaReq( final have_hotWatCoi=have_hotWatCoi, final Thys=Thys, final posHys=posHys) "Plant requests"; Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.Economizers.Controller ecoCon( final minOADes=minOADes, final buiPreCon=buiPreCon, final eneStd=eneStd, final ecoHigLimCon=ecoHigLimCon, final ashCliZon=ashCliZon, final tit24CliZon=tit24CliZon, final minSpe=supFanSpe_min, final minOAConTyp=minOAConTyp, final kMinOA=kMinOA, final TiMinOA=TiMinOA, final TdMinOA=TdMinOA, final venStd=venStd, final dpDesMinOutDam=dpDesMinOutDam, final dpConTyp=dpConTyp, final kDp=kDp, final TiDp=TiDp, final TdDp=TdDp, final uRetDam_min=uRetDam_min, final retDamPhy_max=retDamPhy_max, final retDamPhy_min=retDamPhy_min, final outDamPhy_max=outDamPhy_max, final outDamPhy_min=outDamPhy_min, final minOutDamPhy_max=minOutDamPhy_max, final minOutDamPhy_min=minOutDamPhy_min, final delTOutHis=delTOutHis, final delEntHis=delEntHis, final retDamFulOpeTim=retDamFulOpeTim, final disDel=disDel, final uHeaMax=uHeaMax, final uCooMin=uCooMin, final uOutDamMax=(uHeaMax + uCooMin)/2, final uRetDamMin=(uHeaMax + uCooMin)/2, final have_CO2Sen=have_CO2Sen, final dpAbsMinOutDam=dpAbsMinOutDam) "Economizer controller"; Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplyFan conSupFan( final have_perZonRehBox=have_perZonRehBox, final iniSet=pIniSet, final minSet=pMinSet, final maxSet=pMaxSet, final delTim=pDelTim, final samplePeriod=pSamplePeriod, final numIgnReq=pNumIgnReq, final triAmo=pTriAmo, final resAmo=pResAmo, final maxRes=pMaxRes, final controllerType=fanSpeCon, final k=kFanSpe, final Ti=TiFanSpe, final Td=TdFanSpe, final maxSpe=supFanSpe_max, final minSpe=supFanSpe_min, final iniSpe=iniFanSpe) "Supply fan speed setpoint"; Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplySignals supSig( final have_heaCoi=have_hotWatCoi or have_eleHeaCoi, final controllerType=valCon, final kTSup=kVal, final TiTSup=TiVal, final TdTSup=TdVal, final uHea_max=uHeaCoi_max, final uCoo_min=uCooCoi_min) "Heating and cooling valve position"; Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.SupplyTemperature conTSupSet( final TSupCoo_min=TSupCoo_min, final TSupCoo_max=TSupCoo_max, final TOut_min=TOut_min, final TOut_max=TOut_max, final TSupWarUpSetBac=TSupWarUpSetBac, final delTim=delTimSupTem, final samplePeriod=samPerSupTem, final numIgnReq=ignReqSupTem, final triAmo=triAmoSupTem, final resAmo=resAmoSupTem, final maxRes=maxResSupTem) "Supply temperature setpoint"; Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.ASHRAE62_1.AHU ashOutAirSet( final minOADes=minOADes, final VUncDesOutAir_flow=VUncDesOutAir_flow, final VDesTotOutAir_flow=VDesTotOutAir_flow) if venStd == Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.ASHRAE62_1 "Minimum outdoor airflow setpoint, when complying with ASHRAE 62.1 requirements"; Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReliefDamper relDam( final dpBuiSet=dpBuiSet, final k=kRelDam) if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefDamper "Relief damper control for AHUs using actuated dampers without fan"; Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReturnFanDirectPressure retFanDpCon( final dpBuiSet=dpBuiSet, final p_rel_RetFan_min=p_rel_RetFan_min, final p_rel_RetFan_max=p_rel_RetFan_max, final disSpe_min=retFanSpe_min, final disSpe_max=retFanSpe_max, final conTyp=retFanCon, final k=kRetFan, final Ti=TiRetFan, final Td=TdRetFan) if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanDp "Return fan control with direct building pressure control, using the minimum outdoor air damper"; Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReturnFanAirflowTracking retFanAirTra( final difFloSet=difFloSet, final conTyp=retFanCon, final k=kRetFan, final Ti=TiRetFan, final Td=TdRetFan, final maxSpe=retFanSpe_max, final minSpe=retFanSpe_min) if buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReturnFanMeasuredAir "Return fan control for AHUs using return fan with airflow tracking"; Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.OutdoorAirFlow.Title24.AHU tit24OutAirSet( final minOADes=minOADes, final have_CO2Sen=have_CO2Sen, final VAbsOutAir_flow=VAbsOutAir_flow, final VDesOutAir_flow=VDesOutAir_flow) if venStd == Buildings.Controls.OBC.ASHRAE.G36.Types.VentilationStandard.California_Title_24 "Minimum outdoor airflow setpoint, when complying with Title 24 requirements"; Buildings.Controls.OBC.ASHRAE.G36.AHUs.MultiZone.VAV.SetPoints.ReliefFan relFanCon( final relFanSpe_min=relFanSpe_min, final dpBuiSet=dpBuiSet, final k=kRelFan, final hys=hys) if have_ahuRelFan and buiPreCon == Buildings.Controls.OBC.ASHRAE.G36.Types.BuildingPressureControlTypes.ReliefFan "Control of relief fan when it is part of AHU"; equation connect(conSupFan.uZonPreResReq, uZonPreResReq); connect(dpDuc, conSupFan.dpDuc); connect(conTSupSet.TOut, TOut); connect(conTSupSet.uZonTemResReq, uZonTemResReq); connect(u1SupFan, conTSupSet.u1SupFan); connect(u1SupFan, supSig.u1SupFan); connect(conTSupSet.TAirSupSet, supSig.TAirSupSet); connect(supSig.TAirSup, TAirSup); connect(uOutAirFra_max, ashOutAirSet.uOutAirFra_max); connect(plaReq.yChiWatResReq, yChiWatResReq); connect(plaReq.yChiPlaReq, yChiPlaReq); connect(plaReq.yHotWatResReq, yHotWatResReq); connect(plaReq.uCooCoi_actual, uCooCoi_actual); connect(uHeaCoi_actual, plaReq.uHeaCoi_actual); connect(ashOutAirSet.effOutAir_normalized, ecoCon.VOutMinSet_flow_normalized); connect(ecoCon.dpMinOutDam, dpMinOutDam); connect(supSig.uTSup, ecoCon.uTSup); connect(TOut, ecoCon.TOut); connect(TAirRet, ecoCon.TAirRet); connect(ecoCon.hAirOut, hAirOut); connect(hAirRet, ecoCon.hAirRet); connect(u1SupFan, ecoCon.u1SupFan); connect(ecoCon.yOutDam_min, frePro.uOutDamPosMin); connect(TAirSup, frePro.TAirSup); connect(frePro.u1FreSta, u1FreSta); connect(frePro.u1SofSwiRes, u1SofSwiRes); connect(frePro.TAirMix, TAirMix); connect(ashOutAirSet.VEffAirOut_flow_min, VEffAirOut_flow_min); connect(ecoCon.yRelDam, yRelDam); connect(frePro.yFreProSta, ecoCon.uFreProSta); connect(ecoCon.yOutDam, frePro.uOutDam); connect(ecoCon.yRetDam, frePro.uRetDam); connect(supSig.yHeaCoi, frePro.uHeaCoi); connect(conSupFan.ySupFan, frePro.uSupFan); connect(supSig.yCooCoi, frePro.uCooCoi); connect(frePro.y1EneCHWPum, y1EneCHWPum); connect(frePro.yRetDam, yRetDam); connect(frePro.yOutDam, yOutDam); connect(ecoCon.yMinOutDam, frePro.uMinOutDam); connect(frePro.yMinOutDam, yMinOutDam); connect(frePro.ySupFan, ySupFan); connect(frePro.yRetFan, yRetFan); connect(frePro.yCooCoi, yCooCoi); connect(frePro.yHeaCoi, yHeaCoi); connect(intSwi.y, yHotWatPlaReq); connect(plaReq.yHotWatPlaReq, intSwi.u3); connect(freProMod.y, intSwi.u2); connect(frePro.yRelFan, yRelFan); connect(relDam.dpBui, dpBui); connect(relDam.yRelDam, yRelDam); connect(retFanAirTra.VAirSup_flow, VAirSup_flow); connect(retFanAirTra.VAirRet_flow, VAirRet_flow); connect(dpBui, retFanDpCon.dpBui); connect(retFanDpCon.yDpBui, yDpBui); connect(retFanDpCon.dpDisSet, dpDisSet); connect(u1SupFan, relDam.u1SupFan); connect(u1SupFan, retFanAirTra.u1SupFan); connect(u1SupFan, retFanDpCon.u1SupFan); connect(TAirSup, plaReq.TAirSup); connect(conTSupSet.TAirSupSet, plaReq.TAirSupSet); connect(frePro.yHotWatPlaReq, intSwi.u1); connect(retFanAirTra.yRetFan, frePro.uRetFan); connect(retFanDpCon.yRetFan, frePro.uRetFan); connect(frePro.yAla, yAla); connect(conTSupSet.TAirSupSet, TAirSupSet); connect(tit24OutAirSet.effAbsOutAir_normalized, ecoCon.effAbsOutAir_normalized); connect(tit24OutAirSet.effDesOutAir_normalized, ecoCon.effDesOutAir_normalized); connect(uCO2Loo_max, ecoCon.uCO2Loo_max); connect(uCO2Loo_max, tit24OutAirSet.uCO2Loo_max); connect(tit24OutAirSet.effOutAir_normalized, ecoCon.VOutMinSet_flow_normalized); connect(VAirOut_flow, tit24OutAirSet.VAirOut_flow); connect(VAirOut_flow, ashOutAirSet.VAirOut_flow); connect(ashOutAirSet.outAir_normalized, ecoCon.VOut_flow_normalized); connect(tit24OutAirSet.outAir_normalized, ecoCon.VOut_flow_normalized); connect(VSumZonDesMin_flow, tit24OutAirSet.VSumZonDesMin_flow); connect(VSumZonAbsMin_flow, tit24OutAirSet.VSumZonAbsMin_flow); connect(VSumZonPri_flow, ashOutAirSet.VSumZonPri_flow); connect(VSumAdjAreBreZon_flow, ashOutAirSet.VSumAdjAreBreZon_flow); connect(VSumAdjPopBreZon_flow, ashOutAirSet.VSumAdjPopBreZon_flow); connect(uAhuOpeMod, conSupFan.uOpeMod); connect(uAhuOpeMod, conTSupSet.uOpeMod); connect(uAhuOpeMod, ecoCon.uOpeMod); connect(ecoCon.y1MinOutDam, frePro.u1MinOutDam); connect(frePro.y1MinOutDam, y1MinOutDam); connect(retFanDpCon.yRelDam, yRelDam); connect(u1RelFan, frePro.u1RelFan); connect(retFanAirTra.y1RetFan, frePro.u1RetFan); connect(retFanDpCon.y1RetFan, frePro.u1RetFan); connect(frePro.y1RelFan, y1RelFan); connect(frePro.yFreProSta, freProMod.u); connect(conSupFan.y1SupFan, frePro.u1SupFan); connect(frePro.y1SupFan, y1SupFan); connect(frePro.y1RetFan, y1RetFan); connect(ecoCon.yEnaMinOut, retFanDpCon.u1MinOutAirDam); connect(dpBui, relFanCon.dpBui); connect(u1SupFan, relFanCon.u1SupFan); connect(relFanCon.yDpBui, yDpBui); connect(relFanCon.yRelFan, frePro.uRelFan); connect(relFanCon.y1RelFan, frePro.u1RelFan); connect(relFanCon.yDam, yRelDam); connect(conSupFan.ySupFan, ecoCon.uSupFan); end Controller;