blockModeAndSetPoints

Output zone setpoint with operation mode selection

Information

Block that outputs the zone setpoint temperature (TZonCooSet, TZonHeaSet) and system operation mode (yOpeMod).

The sequence consists of the following two subsequences.

Operation mode selector

The subsequence outputs one of seven types of system operation mode (occupied, warm-up, cooldown, setback, freeze protection setback, setup, unoccupied) according to current time, the time to next occupied hours tNexOcc and current zone temperature TZon. See Buildings.Obsolete.Controls.OBC.ASHRAE.G36_PR1.Generic.SetPoints.OperationMode.

Zone setpoint temperature reset

It sets the zone temperature setpoint according to the globally specified setpoints, the local setpoint adjustments, the demand limits adjustment, the window status and the occupancy status. See Buildings.Obsolete.Controls.OBC.ASHRAE.G36_PR1.TerminalUnits.SetPoints.ZoneTemperatures.

Usage

This version is for a single zone only to be used in the Single Zone VAV sequence.

Parameters

Type	Name	Default	Description
Boolean	have_winSen		Check if the zone has window status sensor
Boolean	have_occSen		Check if the zone has occupancy sensor
Setpoints
Real	THeaSetOcc	293.15	Occupied heating setpoint
Real	THeaSetUno	285.15	Unoccupied heating setpoint
Real	TCooSetOcc	297.15	Occupied cooling setpoint
Real	TCooSetUno	303.15	Unoccupied cooling setpoint
Setpoints adjustment › Adjustable settings
Boolean	cooAdj	false	Flag, set to true if both cooling and heating setpoint are adjustable separately
Boolean	heaAdj	false	Flag, set to true if heating setpoint is adjustable
Boolean	sinAdj	false	Flag, set to true if both cooling and heating setpoint are adjustable through a single common knob
Boolean	ignDemLim	false	Flag, set to true to exempt individual zone from demand limit setpoint adjustment
Setpoints adjustment › Limits
Real	TZonCooOnMax	300.15	Maximum cooling setpoint during on
Real	TZonCooOnMin	295.15	Minimum cooling setpoint during on
Real	TZonHeaOnMax	295.15	Maximum heating setpoint during on
Real	TZonHeaOnMin	291.15	Minimum heating setpoint during on
Real	TZonCooSetWinOpe	322.15	Cooling setpoint when window is open
Real	TZonHeaSetWinOpe	277.15	Heating setpoint when window is open
Setpoints adjustment › Demand control adjustment
Real	incTSetDem_1	0.56	Cooling setpoint increase value (degC) when cooling demand limit level 1 is imposed
Real	incTSetDem_2	1.1	Cooling setpoint increase value (degC) when cooling demand limit level 2 is imposed
Real	incTSetDem_3	2.2	Cooling setpoint increase value (degC) when cooling demand limit level 3 is imposed
Real	decTSetDem_1	0.56	Heating setpoint decrease value (degC) when heating demand limit level 1 is imposed
Real	decTSetDem_2	1.1	Heating setpoint decrease value (degC) when heating demand limit level 2 is imposed
Real	decTSetDem_3	2.2	Heating setpoint decrease value (degC) when heating demand limit level 3 is imposed
Advanced
Real	bouLim	1	Threshold of temperature difference for indicating the end of setback or setup mode
Real	uLow	-0.1	Low limit of the hysteresis for checking temperature difference
Real	uHigh	0.1	High limit of the hysteresis for checking temperature difference
Advanced › Operation mode
Real	preWarCooTim	10800	Maximum cool-down or warm-up time
Real	TZonFreProOn	277.15	Threshold temperature to activate the freeze protection mode
Real	TZonFreProOff	280.15	Threshold temperature to end the freeze protection mode

Connectors

Type	Name	Description
Buildings.Controls.OBC.CDL.Interfaces.RealInput	cooDowTim	Cool-down time retrieved from optimal cool-down block
Buildings.Controls.OBC.CDL.Interfaces.RealInput	warUpTim	Warm-up time retrieved from optimal warm-up block
Buildings.Controls.OBC.CDL.Interfaces.BooleanInput	uWin	Window status: true=open, false=close
Buildings.Controls.OBC.CDL.Interfaces.RealInput	TZon	Zone temperature
Buildings.Controls.OBC.CDL.Interfaces.BooleanInput	uOcc	Zone occupancy status according to the schedule: true=occupied, false=unoccupied
Buildings.Controls.OBC.CDL.Interfaces.RealInput	tNexOcc	Time to next occupied period
Buildings.Controls.OBC.CDL.Interfaces.RealInput	setAdj	Setpoint adjustment value
Buildings.Controls.OBC.CDL.Interfaces.RealInput	heaSetAdj	Heating setpoint adjustment value
Buildings.Controls.OBC.CDL.Interfaces.BooleanInput	uOccSen	Occupancy sensor (occupied=true, unoccupied=false)
Buildings.Controls.OBC.CDL.Interfaces.IntegerInput	uCooDemLimLev	Cooling demand limit level
Buildings.Controls.OBC.CDL.Interfaces.IntegerInput	uHeaDemLimLev	Heating demand limit level
Buildings.Controls.OBC.CDL.Interfaces.IntegerOutput	yOpeMod	Operation mode
Buildings.Controls.OBC.CDL.Interfaces.RealOutput	TZonCooSet	Cooling setpoint temperature
Buildings.Controls.OBC.CDL.Interfaces.RealOutput	TZonHeaSet	Heating setpoint temperature

Components

Type	Name	Description
Buildings.Obsolete.Controls.OBC.ASHRAE.G36_PR1.Generic.SetPoints.OperationMode	opeModSel	Operation mode
Buildings.Obsolete.Controls.OBC.ASHRAE.G36_PR1.TerminalUnits.SetPoints.ZoneTemperatures	TZonSet	Adjust setpoint temperature
Buildings.Obsolete.Controls.OBC.ASHRAE.G36_PR1.Generic.SetPoints.ZoneStatus	zonSta	Zone temperature status
Buildings.Controls.OBC.CDL.Conversions.BooleanToInteger	colZon	Check if the zone is cold
Buildings.Controls.OBC.CDL.Conversions.BooleanToInteger	hotZon	Check if the zone is hot
Buildings.Controls.OBC.CDL.Logical.Sources.Constant	winSta	Assume window is closed when there is no windows status sensor
Buildings.Controls.OBC.CDL.Logical.Sources.Constant	occSta	Assume the zone is occupied when there is no occupancy sensor
Buildings.Controls.OBC.CDL.Conversions.BooleanToInteger	booToInt	Boolean to integer

Revisions

June 16, 2020, by Jianjun Hu:
Moved from TerminalUnits.ModeAndSetPoints, reimplemented to use the operating mode specified according to ASHRAE G36 official release and changed the heating and cooling demand limit level to be inputs.
October 24, 2018, by David Blum:
First implementation.