Room Automation Station Dual Duct Variable Volume with Two Inlet Sensors 14069 - Modulating Electric Heat and Hot Water Radiator (on DXR.x12) 14169 - Demand Control Ventilation, Modulating Electric Heat and Hot Water Radiator (on DXR.x12) 14369 - Hot Water Heat and 1-Stage Electric Radiator (DXR.
Table of Contents Application Notes .............................................................................................................. 5 Dual Duct Sequence Configurations ................................................................................... 8 Use case 1: VAV DD - Ventilation source in one duct ....................................... 10 Use case 2: VAV DD - Ventilation in both ducts, with mixing control.................
Radiator Electric, 1-Stage (RadEl12) ................................................................. 68 Supply Chains for Primary Plants / Room..................................................................... 71 Supply Chain Coordination - Supply Air: Group Member .................................................. 72 Airflow deviation signal ....................................................................................... 72 Dual Duct Saturation signal ...........................................
Application Notes Dual Duct Sequence Configurations Application Notes This document should be used in conjunction with the VAV Start-up document (A6V10665935) and the "Application Help" in ABT Site. Application Help describes application types installed in the ABT Site library and lists all configuration items found in a specific template or type.
Application Notes Dual Duct Sequence Configurations Overview 14069, 14169 and 14369 Dual Duct Variable Volume with Two Inlet Sensors: Templates 14069, 14169 and 14369. This application modulates the supply air dampers of the dual duct terminal box for cooling, heating, and ventilation (for demand control ventilation a room air quality sensor is required: QMX3.P74). 14069: Modulating Electric Heat and Hot Water Radiator (on DXR.
Application Notes Dual Duct Sequence Configurations QMX3.P34 / QMX3.P74 Features T° ✔ Room air quality sensor ✔ LCD multi display ✔ Green Leaf LED ✔ Comfort Button ✔ Heat/Cool Status ✔ Room Operating Mode ✔ Rapid Ventilation ✔ NOT AVAILABLE WITH DUAL DUCT Present setpoint ✔ Displays Comfort or pre-Comfort setpoint – or last in effect. (P74 only) CAUTION Nominal air volume flow (AirFlNom) AirFlNom must be understood and set correctly.
Application Notes Dual Duct Sequence Configurations Dual Duct Sequence Configurations Note Default settings assign Duct 1 as cold duct and Duct 2 as hot duct, but these assignments are configurable / reversible if desired or required. The following examples use the default assignments for cold duct and hot duct (use case 4 is special case, see below).
Application Notes Dual Duct Sequence Configurations Color legend for graphics: • Red = heating • Blue = cooling • Green = ventilation • Yellow = total air flow Ventilation Ventilation Control Use source in deadband strategy case Cold duct only Cold duct -- 1a Hot duct only Hot duct -- 1b Both ducts Cold duct Hot duct Last duct Mixing control 2a Snap acting 3a Mixing control 2b Snap acting 3b Mixing control 2c Snap acting 3c Schedule 9 Siemens Industry, Inc.
Application Notes Dual Duct Sequence Configurations Use case 1: VAV DD - Ventilation source in one duct In use case 1 configurations, the mechanical equipment consists of a multiple fan AHU with separate elements for heating and cooling air distribution. The hot and cold air streams are drawn from different sources and driven by separate fans. Outside air ventilation is provided in either the hot duct or the cold duct, not both.
Application Notes Dual Duct Sequence Configurations Use Case 1b – VAV DD with ventilation in hot duct only (Duct 2): Hot duct does not close if ventilation re- Hot duct may close if ventilation require- quirement remains constant. ment goes to zero.
Application Notes Dual Duct Sequence Configurations cording to the relative costs of providing hot air or cold air. For example, if it takes more energy to provide hot air, then it makes sense to use cold air for ventilation in the deadband. If energy costs are approximately equal, then "last duct" configuration may be preferable. Mixing control vs. Snap acting control – Some people associate mixing hot and cold air flows in the dual duct box with wasting energy.
Application Notes Dual Duct Sequence Configurations On an increase in heating load, the heating flow demand on the hot duct modulates from heating flow min to heating flow max. Cold duct air flow will be the value of the difference between hot duct air flow and the current ventilation flow demand, provided that the ventilation flow demand is greater than hot duct air flow, otherwise cold duct air flow will be zero.
Application Notes Dual Duct Sequence Configurations rent value of ventilation flow demand, provided that the ventilation flow demand is greater than cold duct air flow, otherwise hot duct air flow will be zero. Use Case 2c – VAV DD with ventilation in both ducts, last duct ventilation in deadband, with mixing control: Last active duct will stay open in deadband Ducts may close if ventilation requirement to meet a ventilation requirement. Outside goes to zero.
Application Notes Dual Duct Sequence Configurations to cooling flow max. Cold duct air flow will be the greater of vent demand and cooling demand. Hot duct air flow will be zero. (Cold duct remains the active duct.) • Exiting deadband on a call for heat when last duct is the cold duct and CtlStrgy = Mixing control; On an increase in heating load, the heating flow demand on the hot duct modulates from heating flow min to heating flow max.
Application Notes Dual Duct Sequence Configurations Use Case 3a – VAV DD with ventilation in both ducts, cold duct ventilation in deadband, snap acting control: Cold duct will stay open in deadband to Ducts may close if ventilation requirement meet ventilation requirement. On an exit to goes to zero. heating, the cold duct closes immediately and the hot duct takes over ventilation needs.
Application Notes Dual Duct Sequence Configurations Use Case 3b – VAV DD with ventilation in both ducts, hot duct ventilation in deadband, snap acting control: Hot duct will stay open in deadband to meet Ducts may close if ventilation requirement ventilation requirement. On an exit to cool- goes to zero. ing, the hot duct closes immediately and the cold duct takes over ventilation needs.
Application Notes Dual Duct Sequence Configurations Use Case 3c – VAV DD with ventilation in both ducts, last duct ventilation in deadband, snap acting control: Last active duct will stay open in deadband Ducts may close if ventilation requirement to meet ventilation requirement. For behav- goes to zero. ior outside of deadband see additional information below.
Application Notes Dual Duct Sequence Configurations If the last active duct = hot duct, then when the system exits the temperature deadband the behavior is as follows: • Exiting deadband on a call for heat when last duct is the hot duct and CtlStrgy = Snap acting; On an increase in heating load, the heating flow demand on the hot duct modulates from heating flow min to heating flow max. Hot duct air flow will be the greater of vent demand and heating demand. Cold duct air flow will be zero.
Application Notes Dual Duct Sequence Configurations In use case 4, all ventilation is handled in Duct 2 by dedicated outside air system (DOAS). Minimum ventilation levels can be specified per room occupancy mode. When configured for DCV (demand control ventilation) an increase in ventilation flow is provided in response to room IAQ (CO 2) setpoints configured per occupancy mode. Temperature control is provided by Duct 1 and may include optional heating or cooling coils.
Application Notes Dual Duct Sequence Configurations Use Case 5a – Constant volume DD option, ventilation in both ducts, mixing control, with cold duct ventilation in deadband VntSprtDdband = Duct 1, example 1: VntSprtDdband = Duct 1, example 2: Cold duct stays at constant max volume Cold duct stays at constant max volume during cooling and deadband to provide the during cooling and deadband with an addi- elevated minimum ventilation setting.
Application Notes Dual Duct Sequence Configurations Parameter configuration for use case 5a: • VavSuChovrCnd1 = Cooling • VavSuChovrCnd2 = Heating • VntDuctSprt = Both ducts • CtlStrgy = Mixing control • VntSprtDdband = Duct 1 (mixing will occur at/during setpoint for Duct 2 hot duct) • Minimum ventilation parameter(s)* = desired CV flow *In the room AF for ventilation control (VavVntCtl) set min vent parameter for Comfort mode (AirFlMinRCmf) to desired CV flow; the min vent setpoint object in
Application Notes Dual Duct Sequence Configurations Use Case 5b – Constant volume DD option, ventilation in both ducts, mixing control, and hot duct ventilation in deadband VntSprtDdband = Duct 2, example 1: VntSprtDdband = Duct 2, example 2: Hot duct stays at constant max volume Hot duct stays at constant max volume during heating and deadband to provide the during heating and deadband with an addi- elevated minimum ventilation setting.
Application Notes Dual Duct Sequence Configurations Parameter configuration for use case 5b: • VavSuChovrCnd1 = Cooling • VavSuChovrCnd2 = Heating • VntDuctSprt = Both ducts • CtlStrgy = Mixing control • VntSprtDdband = Duct 2 (mixing will occur at/during setpoint for Duct 1 cold duct) • Minimum ventilation parameter(s)* = desired CV flow *In the room AF for ventilation control (VavVntCtl) set min vent parameter for Comfort mode (AirFlMinRCmf) to desired CV flow; the min vent setpoint object i
Application Notes Sequence of Operation – Summary Sequence of Operation – Summary Overview This application modulates the supply air dampers of the dual duct terminal box for cooling, heating, and ventilation (for demand control ventilation a room air quality sensor is required: QMX3.P74). 14069: Modulating Electric Heat and Hot Water Radiator (on DXR.x12) 14169: Demand Control Ventilation, Modulating Electric Heat and Hot Water Radiator (on DXR.
Application Notes Sequence of Operation – Summary Outputs ⚫ Supply damper actuator, duct 1 ⚫ Supply damper actuator, duct 2 ⚫ Modulating electric heating coil (14069 & 14169) ⚫ Hot water radiator coil modulating valve (14069 & 14169) ⚫ Hot water coil modulating valve (14369) ⚫ 1-Stage electric radiator (14369) Room operating modes The operating mode of the controlled space is applied according to schedule or room occupant input.
Application Notes Sequence of Operation – Summary h) When in deadband (no heating or cooling) – during any mode – the room unit will display the last Comfort or Pre-Comfort heating or cooling setpoint. i) The heating/cooling state is displayed as an icon on the room unit. When in deadband, the space for the icon is blank to indicate that heating and cooling are both off.
Application Notes Sequence of Operation – Summary Dual Duct VAV Box Sequence with Modulating Heat a) Cooling – When the room temperature [RM TEMP EVAL] rises above the effective cooling setpoint [CLG STPT EFF], the cold duct supply damper modulates from the cooling or vent flow minimum (whichever is larger) to the cooling flow max to satisfy CLG STPT EFF.
Room Automation Overview Sequence of Operation – Summary Room Automation Overview To ensure building controls can be optimized by central systems, primary systems and individual room automation, it is essential that: ⚫ Individual BACnet objects are grouped together to facilitate optimization of building systems. ⚫ Room operating functions are governed by the following room automation operating modes: Room operating mode, Plant operating mode, and HVAC device mode.
Room Automation Overview Operating Modes Operating Modes Room operating mode (ROpMod) is determined by central functions (for example, scheduler) and can be overwritten by a local presence button on the room unit.
Room Functions Room Operating Mode Determination Room Functions Room Operating Mode Determination Overview The ROpModDtr application function (AF) calculates the Room operating mode (ROpMod) and makes it available to the coordinated Room segment AFs.
Room Functions Room Operating Mode Determination Setting TiCmfBtn to 0 will disable the Comfort button. If the Presence button is configured, setting TiCmfBtn to 0 only disables the timer; in this case, Comfort mode remains in effect until the next schedule change unless the Presence button is pressed again. Outputs: ROpModDtr outputs the following: ⚫ ROpMod - The room operating mode is distributed to HVAC, lighting and shading AFs.
Room Functions Room Operating Mode Determination Examples of trigger response: Source / action Trigger / value Response (Example; results depend on configuration) Comfort button / Eco → Cmf CmfCndTrg / 3:Manual HVAC: No impact Lighting: On (starts constant lighting control) Shading: Stops automatic function Comfort button / Cmf → Eco EefCndTrg / 3:Manual HVAC: Resets any previous manual setpoint adjustment. See note for how to eliminate reset.
Room Functions Room Operating Mode Determination Description Parameter Default value ManOpLockCnf 3:Protection / Economy Pre-Comfort / Comfort. All impacts to HVAC operation are considered (such as window contact, presence detector, manual fan and setpoint adjust). (c) Manual operation lock Manual operation lock configuration → During the indicated room operating modes, manual HVAC operation is locked and Comfort cannot be increased, therefore energy efficiency is maintained.
Room Functions Room Operator Unit Room Operator Unit The following display and operating functions are available based on device configuration. If multiple room operator units are used, the last input wins.
Room Functions Room Operator Unit Display outside air temperature: Only the outside temperature is displayed. Navigation: , Key 1: Display room & outside air temp.: The room temperature and the outside temperature are displayed. Toggling between the values is enabled. This setting is only meaningful if the room temperature sensor is enabled. Navigation: , Key 1: Room unit, display humidity ✳ Room unit, display humidity defines which relative humidity values can be displayed.
Room Functions Room Operator Unit from all room segments combined into a Room configuration. Navigation: , Key 1: Display outside air quality: The air quality of the outside is displayed. Navigation: , Key 1: Note: This setting is only meaningful if a value for the air quality of the outside is available. Display room & outside air quality: The air quality of the room and of the outside are displayed. Toggling between the values is enabled.
Room Functions Room Operator Unit Enable operation: fan speed setpoint ✳ Enable operation: fan speed setpoint defines if the fan speed is displayed and if the user can change the fan speed. Yes: The fan speed is displayed and you can change it. Key 3: No: The fan speed is not displayed and you cannot change it. Enable operation: room humidity setpoint ✳ Enable operation: room humidity setpoint defines if the relative humidity setpoint is displayed and if the user can change it.
Room Functions Room GreenLeaf If user does not manually press key 8 a second time, presence / Comfort expire after a configurable delay (default 120 minutes). No: The user cannot confirm his presence by pressing Key 8. Enable operation: room op.mode ✳ Enable operation: room op.mode defines if the room climate operating mode is displayed and if the user can change it. Yes: The room climate operating mode is displayed and you can change it.
Room Functions Room Coordination Functions for HVAC – ⚫ HVAC: The Maximum tolerance for manually shifting the room temperature setpoint can be configured. Fan speed and room operating mode: No configuration. Their values cannot exceed the automatic values. – Lighting and shading: No configuration. Lighting setpoints and shading positions cannot be less energy efficient than the automatic values.
Room Functions Room Coordination Functions for HVAC Enum PltOpMod Plant Mode Purpose Action of Mechanical Equipment unoccupied period. Ventilation reduced or off selected by configuration. Configurable. Example: Shut schedule/ occ sensor off ventilation for conference rooms that are unoccupied during the normally occupied daytime hours. Trigger(s) 4 Pre-Comfort Conserve energy for brief unoccupied periods. 5 Comfort Provide room air conditions All space conditioning suitable for room occupancy.
Room Functions Room Coordination Functions for HVAC The Table below shows the different room and central BAS functions that determine the plant mode for the VAV application templates. NOTE: If an input is not configured in the application, it is NOT USED in determining the plant mode state.
Room Functions Room Coordination Functions for HVAC ⚫ Fan speed operation, fan speed control values (via internal connection). – The leaf icon on the room operator unit turns red If the user sets a higher fan speed than is required by the automatic control. Outputs: This AF (HvacGrnLf11) provides the Room energy efficiency indication HVAC (RHvacEei) to the room operator unit via the Room green leaf (RGrnLf) AF.
Room Functions Room Coordination Functions for HVAC Room Temperature Setpoint Determination This application function provides the Comfort heating/cooling setpoints (either the setpoint (SpTR) or the setpoint shift (SpTRShft)) for the PID controllers in the room temperature control AFs (TCtlH, TCtlC).
Room Functions Room Coordination Functions for HVAC Parameters Description Object Preloaded value Operating command for energy efficiency condition trigger at automatic 1:None 2:Automatic 3:Manual OpCmdEefAuto 2:Automatic Operating command for energy efficiency condition trigger at manual Enumeration (see OpCmdEefAuto) OpCmdEefMan 1:None Display absolute room temperature setpoint 1:Average value 2:Present value SpTRAbsDspy 2:Present value Heating/Cooling State Determination The Heating/cooling
Room Functions Room Coordination Functions for HVAC Configuration Parameters Description Object Pre-loaded Values Shift of switch-on point for heating state ShftOnPtHSta 0.0 ºF Shift of switch-on point for cooling state ShftOnPtCSta 0.0 ºF Switch-on delay for heating/cooling changeover DlyOnHCChovr 2 mins VAV Ventilation Control There are different control modes for the ventilation control. The behavior is selectable by parameter and is dependent on if a room air quality sensor is available.
Room Functions Room Coordination Functions for HVAC Air Volume Flow Tracking The application function Air volume flow tracking (AirFlTck) collaborates with VAV supply and extract dampers to calculate the extract airflow setpoint. NOTE: Air volume flow tracking application function is NOT enabled in any Dual Duct, VAV or FPB terminal box application templates.
Room Functions Room Coordination Functions for HVAC NOTE: The VAV with hot water or electric heating coil application has been pre-loaded to support the Supply air VAV damper and the heating coil valve or stages of electric heat. If the default application does not meet job requirements, an application can be configured and modified to job specifications in ABT Site. This application function works in collaboration with a room segment temperature control AF.
Room Functions Room Coordination Functions for HVAC 5. RadDevMod = 3:Full Open These data points are then released from warm-up once room temperature returns to the Comfort deadband (70°F to 75°F, default). Rapid Ventilation (Optional – requires additional configuration in ABT Site) The fan speed button at the room operator unit allows the occupant to increase the ventilation rate in the room when the room operating mode (ROpMod) is in Comfort.
Coordinating Signals between Room and Room Segment Coordinating Signals between Room and Room Segment Information Shared From To Room control functions request cooling, heating or ventilation from room segment devices. Request is the output of the room control function PIDs in percent (%). Request signal to room segment device. Binary availability of Room segment devices Room segment devices informs room to respond to request from room control control function that it is available for function.
Room Segment Functions Device Mode Determination Room Segment Functions Device Mode Determination Depending on the plant operating mode, each device is assigned a device operating mode (DevOpMod). Examples include control, fully open, fully closed, and off.
Room Segment Functions Device Control Functions HVAC Device Duct 1 Duct 2 (common setpoint for both ducts) (common setpoint for both ducts) mode ctrl.
Room Segment Functions Device Control Functions HVAC Main features: ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ ⚫ VAV supply damper modulation (2) for dual duct temperature and ventilation control Two inlet flow sensors Air volume flow setpoint calculation (2) Air volume flow calculation (2) Selectable ducts for hot air or cold air (hot, cold, or neither) Mixing control or snap acting control Selectable duct(s) for ventilation air (one, both, or neither) Dedicated outdoor air system (DOAS) support Control coordination for extr
Room Segment Functions Device Control Functions HVAC Interlocks Interlocks are (typically) binary signals that ensure equipment protection. Additional signals help coordinate the interaction sequences between HVAC devices. A signal's direction In / Out (and function, to some degree) depend on the HVAC device. For example, an airflow status (AirFlSta) interlock signal can be output from a supply damper or a fan, and sent as input to a coil or an OA damper.
Room Segment Functions Device Control Functions HVAC Description Object Object Type Pre-loaded Value Supply air VAV dimension A 1 Supply air VAV dimension A 2 VavSuDmsnA1 VavSuDmsnA2 ACnfVal 8.0 in. Supply air VAV dimension B 1 Supply air VAV dimension B 2 VavSuDmsnB1 VavSuDmsnB2 ACnfVal 8.0 in. Supply air VAV flow coefficient 1 Supply air VAV flow coefficient 2 VavSuFlCoef1 VavSuFlCoef2 ACnfVal 0.63 (0.
Room Segment Functions Device Control Functions HVAC Parameters Description Parameter Pre-loaded Value Switch-on point for differential pressure (1 and 2) SwiOnPtDiffP 4% Hysteresis for differential pressure (1 and 2) HysDiffP 2% Setpoint selector for extract air VAV box (1 and 2) SpSelVavEx Supply airflow Switch-on point for air volume flow state (1 and 2) SwiOnAirFlSta 4% Hysteresis for air volume flow state (1 and 2) HysAirFlSta 2% Enable monitoring for fan state → Must = 0:No for para
Room Segment Functions Device Control Functions HVAC (Dual Duct standard preloaded templates) AirFlNom is used to define the scaling value that converts physical flow values to their relative (percent) flow values. When AirFlNom is used, all of the application’s air volume flow percent calculations are based on the value of AirFlNom. This means that the value of AirFlNom - when used - is crucial for the proper functioning of the automation station’s air volume flow control algorithms.
Room Segment Functions Device Control Functions HVAC Dual Duct Air Volume Flow Calculation Air Volume Flow (VavSuAirFl1, VavSuAirFl2) and Relative Air Flow (VavSuAirFlRel1, VavSuAirFlRel2) are calculated values computed from logic that utilizes the following: ⚫ Separate Velocity pressure from the differential pressure sensor or other flow sensing technology ⚫ Units conversion constant to convert to air velocity ⚫ Flow coefficient value for calibration at a specific airflow setpoint ⚫ Duct area in units com
Room Segment Functions Device Control Functions HVAC Pressure Dependent Control - Low airflow If the box cannot satisfy airflow demands due to not having enough available airflow (or the airflow sensor object is invalid), then open loop operation begins. In open loop operation, damper position is controlled without using the measured air volume flow value from the sensor; instead, damper position = airflow setpoint in % of nominal airflow.
Room Segment Functions Device Control Functions HVAC Fan coasting feature Note The fan coasting feature applies to duct 1 and duct 2 separately: there is a fan coasting object for each duct (FanSuCstVal1, FanSuCstVal2). The fan coasting feature (FanSuCstVal) prevents premature closing of the room supply damper while the AHU fan is coasting down. This might occur during a switch between operating modes (for example, switching from Comfort to Economy).
Room Segment Functions Device Control Functions HVAC Configuration Parameters Description Parameter Preloaded value Switch-on point for air flow demand SwiOnAirFlDmd 4% Hysteresis for air flow demand HysAirFlDmd 2% 61 Siemens Industry, Inc.
Room Segment Functions Device Control Functions HVAC Hot Water Coil (HclHw11) Application template: 14369 This application function operates a hot water valve for a heating coil. The main output is an analog output for valve position. Main features: ⚫ Hot water valve modulation ⚫ Heating available status ⚫ Interlocks ⚫ Supply chain interface Function The heating coil heating request (HclHReq) is received and processed into an analog output signal for the heating coil valve position (HclVlvPos).
Room Segment Functions Device Control Functions HVAC Electric heating coil, modulating output (HclEl11) Application templates: 14069, 14169 This application function modulates an electric heating coil. The main output is an analog output that is configurable for power modulation (SCR) or pulse width modulation.
Room Segment Functions Device Control Functions HVAC Configuration Description Parameter Default value Enable overtemperature detector input ▶ Enable input, must be set to 1:Yes when an electric heating coil over temperature detector (binary input) is present. When electric heating coil over temperature detector is closed, the heating coil device mode will turn Off at priority (4:Protection 1).
Room Segment Functions Device Control Functions HVAC NOTE: Signals in table are internal signals, not BACnet objects. For this reason they are not visible in the tool, but the parameters associated with them are. See Comments column for hints on parameters that affect interlock functionality. Signal Type Description Comment AirFlSta Boolean Air flow status → Interlock signal, from a fan or a supply damper, that keeps the coil locked unless that same fan or supply damper provides airflow.
Room Segment Functions Device Control Functions HVAC Configuration Description Parameter Preloaded value Enable overtemperature detector input EnOvrTDetIn 0:No Nominal electric power NomElPwr 0.
Room Segment Functions Device Control Functions HVAC Valve Position Outside Air Temperature Y1DndftElPos: 100% X1DndftTOa: 23°F Y2DndftElPos: 25% X2DndftTOa: 50°F Downdraft compensation is implemented using a linear reset function. The following graphic shows factory default values for X,Y downdraft compensation parameters. Parameter EnDndft must be set to 1:Yes for downdraft compensation to function (see Configuration). The following figure(s) illustrates control modulation and related functions.
Room Segment Functions Device Control Functions HVAC Configuration Description Parameter Default value Switch-on point for hot water demand ▶ When the radiant ceiling heating valve position is greater than the switch-on point, the radiant ceiling heating valve enables request hot water for heating.
Room Segment Functions Device Control Functions HVAC Note This AF does not perform loop control; its main purpose is to execute commands. Loop control processes (for this AF) are managed in the "room" AF(s) that collaborate with this AF to command the end device. Multiple radiator control: The radiator electric position collection object (RadElPosCol) can reference and control multiple radiators.
Room Segment Functions Device Control Functions HVAC temperature detection collection object (RadOvrTDetCol); this collection object is a common node for any/all RadOvrTDet input object(s). The RadOvrTDet objects are analyzed using an OR statement. If one or more objects detect over temperature, the binary result object (RadOvrTDetRs) switches from 0 to 1, causing the radiator to shut off at equipment protection priority.
Supply Chains for Primary Plants / Room Device Control Functions HVAC Supply Chains for Primary Plants / Room This function exists to execute group data exchanged between room applications and primary system applications. It communicates with the primary system using standard BACnet objects. There are two ways data can be shared between the primary system and the rooms. These are: ⚫ Read / write to standard BACnet Objects in individual automation stations.
Supply Chains for Primary Plants / Room Supply Chain Coordination - Supply Air: Group Member Supply Chain Coordination - Supply Air: Group Member Airflow deviation signal When the deviation calculation is enabled, a determination is made if the setpoint is greater than the air flow for a period of time an analog deviation value is mode available to the central function for additional control logic or reporting.
Supply Chains for Primary Plants / Room Supply Chain Coordination - Supply Air: Group Member Dual Duct AHU changeover condition signal Each multistate VAV supply changeover condition input signal (VavSuChovrCnd1, VavSuChovrCnd2) comes from the room coordinating function (RCoo). It indicates the current heating / cooling available status for central AHU. Four states are supported: 1. Neither 2. Heating 3. Cooling 4.
Supply Chains for Primary Plants / Room Supply Chain Coordination - Supply Air: Group Member Description Parameter Pre-loaded Value Air volume flow relief → The minimum airflow setpoint for VAV box when its air flow relief object (VavSuAirFlRlf) is set to True. AirFlRlf 0.0 ft3/min 74 Siemens Industry, Inc.
Inputs and Outputs Inputs and Outputs 14069 Input/Output Diagram 75 Siemens Industry, Inc.
Inputs and Outputs 14169 Input/Output Diagram 76 Siemens Industry, Inc.
Inputs and Outputs 14369 Input/Output Diagram 77 Siemens Industry, Inc.
Point Database Point Database 14069 Point Database The table shows US engineering units and values, and also CA engineering units and values. CA units are shown in parentheses ( ).
Point Database Object Type Insta Desigo nce # Name Description Defaul Units t Value Enumeration On Text Off Text 35 DSpHPcf Delta heating setpoint for pre-comfort 2 (1) DEG F (DEG K) -- -- -- PrSpHCmf Present heating setpoint for comfort -- DEG F (DEG C) -- -- -- STBY H SPEFF ACalcVal 37 PrSpHPcf Present heating setpoint for pre-comfort -- DEG F (DEG C) -- -- -- 25 HTG STPT EFF APrcVal PrSpH Present heating setpoint -- DEG F (DEG C) -- -- -- 26 ECO H SP EFF PrSpHEco
Point Database # Descriptor Object Type Insta Desigo nce # Name Enumeration On Text Off Text 48 SU AIR1VOL 1 ACalcVal 693 VavSuAirFl1 Supply air VAV air volume flow 1 -- ft3/m (lps) -- -- -- 49 SU AIR1FLO ACalcVal 694 VavSuAirFl Rel1 Supply air VAV rel.air volume flow 1 -- PCT -- -- -- 50 AIR FL 1DV ACalcVal 695 VavSuAirFl Dvn1 Supply air VAV air volume flow deviat.
Point Database # Descriptor Object Type Insta Desigo nce # Name Description Defaul Units t Value Enumeration On Text Off Text 73 NGT CLG REQ BCalcVal 3 NgtCReq Night cooling request Inactiv -e -- Active Inactive 74 COOL DN REQ BCalcVal 4 CoolDwnRe Cool down request q Inactiv -e -- Active Inactive 75 WARM UP REQ BCalcVal 5 WarmUpRe q Warm-up request Inactiv -e -- Active Inactive 76 OCC SEN EVAL BCalcVal 6 RPscDet Room presence detection Absen t -- -- Present Absent
Point Database # Descriptor Object Type Insta Desigo nce # Name Description Defaul Units t Value Enumeration On Text Off Text 91 RM OP MODE MPrcVal 17 ROpMod Room operating mode Protec -t 1:Protect 2:Economy 3:PrComfrt 4:Comfort -- -- 92 GREEN LEAF MPrcVal 19 REei Energy efficiency indication room Undef -- 1:Undef 2:Poor 3:Satisf 4:Good 5:Excel -- -- 93 RM LGT GRNLF MCalcVa 20 l RLgtEei Room energy efficiency ind.
Point Database # Descriptor Object Type Insta Desigo nce # Name Description Defaul Units t Value Enumeration On Text Off Text 101 RAD HW DMD MCalcVa 38 l RadHwDmd Radiator hot water demand Off -- 1:Off 2:HeatDmd 3:Warm-up -- -- 102 RAD DEV MODE MPrcVal 39 RadDevMo d Off -- 1:Off 2:CtrlMode 3:FullOpen 4:CMdDwDrf 5:DwnDrft -- -- 103 HTG DEV MODE MPrcVal 99 HclDevMod Heating coil device mode Off -- 1:Off 2:CtrlMod 3:FullOpen -- -- Radiator device mode 104 RM UNIT STA4 BAPeri
Point Database # Descriptor 110 SU AIR2DMD Object Type Insta Desigo nce # Name MCalcVa 596 l VavSuAirD md2 Description Defaul Units t Value Enumeration On Text Off Text Supply air VAV air demand 2 f.
Point Database 14169 Point Database The table shows US engineering units and values, and also CA engineering units and values. CA units are shown in parentheses ( ).
Point Database Object Type Insta Desigo Name nce # Description Default Units Value Enumeration On Text Off Text 35 DSpHPcf Delta heating setpoint for pre-comfort 2 (1) DEG F (DEG K) -- -- -- PrSpHCmf Present heating setpoint for comfort -- DEG F (DEG C) -- -- -- STBY H SPEFF ACalcVal 37 PrSpHPcf Present heating -setpoint for pre-comfort DEG F (DEG C) -- -- -- 27 HTG STPT EFF APrcVal PrSpH Present heating setpoint -- DEG F (DEG C) -- -- -- 28 ECO H SP EFF PrSpHEco Pr
Point Database # Descriptor Object Type Insta Desigo Name nce # Description Default Units Value Enumeration On Text Off Text 50 SU AIR1VOL 1 ACalcVal 693 VavSuAirFl1 Supply air VAV air volume flow 1 -- ft3/m (lps) -- -- -- 51 SU AIR1FLO ACalcVal 694 VavSuAirFlRel1 Supply air VAV rel.air volume flow 1 -- PCT -- -- -- 52 AIR FL 1DV ACalcVal 695 VavSuAirFlDvn1 Supply air VAV air volume flow deviat.
Point Database # Descriptor Object Type Insta Desigo Name nce # Description Default Units Value Enumeration On Text Off Text 76 COOL DN REQ BCalcVal 4 CoolDwnReq Cool down request Inactive -- -- Active Inactive 77 WARM UP REQ BCalcVal 5 WarmUpReq Warm-up request Inactive -- -- Active Inactive 78 OCC SEN EVAL BCalcVal 6 RPscDet Room presence detection Absent -- -- Prese nt Absent 79 WINDOW EVAL BCalcVal 7 RWndSta Room window state Closed -- -- Opene Closed d 80 FR
Point Database # Descriptor Object Type Insta Desigo Name nce # Description Default Units Value Enumeration On Text Off Text 94 GREEN LEAF MPrcVal 19 REei Energy efficiency indication room Undef -- 1:Undef 2:Poor 3:Satisf 4:Good 5:Excel -- -- 95 RM LGT GRNLF MCalcVa 20 l RLgtEei Room energy efficiency ind.lighting Undef -- 1:Undef 2:Poor 3:Satisf 4:Good 5:Excel -- -- 96 RM SHD GRNLF MCalcVa 21 l RShdEei Room energy efficiency ind.
Point Database Object Type Insta Desigo Name nce # Description Default Units Value Enumeration On Text Off Text 104 RAD DEV MODE MPrcVal 39 RadDevMod Radiator device mode Off -- 1:Off 2:CtrlMode 3:FullOpen 4:CMdDwDrf 5:DwnDrft -- -- 105 HTG DEV MODE MPrcVal 99 HclDevMod Heating coil device mode Off -- 1:Off 2:CtrlMod 3:FullOpen -- -- 106 RM UNIT ST21 BAPerip 414 heralDev ice ROpUn 1 Room operator unit 1 Operat. -- 1:Operat.
Point Database # Descriptor 112 SU AIR2DMD Object Type Insta Desigo Name nce # MCalcVa 596 l VavSuAirDmd2 Description Default Units Value Enumeration Supply air VAV air demand 2 f.plant mode Off 1:Off -2:Protect 3:Economy 4:PrComfrt 5:Comfort 6:Warm-up 7:Cooldown 8:RmLTProt 9:CdOvrFPr 10:FreeCool 11:NghtCool 12:Vent 13:EqTmpPro 14:ArVlFlwO 15:SmkCPoPr 16:SmkCNgPr 17:Purge -- On Text Off Text -- BACnet Object Types: ⚫ AI, AO, BI, BO, MI, MO – Standard BACnet physical inputs and outputs.
Point Database 14369 ADXR Point Database The table shows US engineering units and values, and also CA engineering units and values. CA units are shown in parentheses ( ).
Point Database # Descriptor Object Type Instan Desigo Name ce # Description Default Value Units Enumeration On Text Off Text 19 CMF HTG STPT APrcVal 32 SpHCmf Heating setpoint for comfort 70 (21) DEG F (DEG C) -- -- -- 20 PROT HTG SP ACnfVal 33 SpHPrt Heating setpoint for protection 45 (7) DEG F (DEG C) -- -- -- 21 ECO HTG STPT ACnfVal 34 SpHEco Heating setpoint for economy 55 (12) DEG F (DEG C) -- -- -- 22 STBY H DELTA ACnfVal 35 DSpHPcf Delta heating setpoint
Point Database Instan Desigo Name ce # Description Default Value Units Enumeration On Text Off Text RM HUM EVAL ACalcVal 54 RHuRel Relative humidity for room -- rh -- -- -- 40 REHTG POS ACalcVal 57 ReHclPos Reheating coil position -- PCT -- -- -- 41 RAD ELEC PWR ACalcVal 63 RadElPwr Radiator electric power -- kW -- -- -- 42 RAD HTG REQ ACalcVal 64 RadHReq Radiator heating request -- PCT -- -- -- 43 HTG COIL REQ ACalcVal 274 HclHReq Heating coil heating re
Point Database # Descriptor Object Type Instan Desigo Name ce # Units Enumeration On Text Off Text 64 HTG FLOW MIN ACnfVal 737 VavSuAirFlMin H Supply air VAV min.air 100 vol.flow f.heat. (50) ft3/m (lps) -- -- -- 65 VENT FLO MAX ACnfVal 738 VavSuAflMaxV nt Supply air VAV max.air 500 vol.flow f.vent. (250) ft3/m (lps) -- -- -- 66 VENT FLO MIN ACnfVal 739 VavSuAflMinVn Supply air VAV min.air 0 t vol.flow f.vent.
Point Database # Descriptor Object Type Instan Desigo Name ce # Description Default Value Units Enumeration On Text Off Text 89 PLNK STATUS CmnEvt 4 PlnkBusSta KNX PL-Link bus state Normal -- 1:Normal 2:IntervAc 3:Fault 4:Alarm 5:FltAlrm -- -- 90 RM STATUS CmnEvt 12 RSta Room state Normal -- 1:Normal 2:IntervAc 3:Fault 4:Alarm 5:FltAlrm -- -- 91 SEGM STATUS CmnEvt 13 RSegmSta Room segment state Normal -- 1:Normal 2:IntervAc 3:Fault 4:Alarm 5:FltAlrm -- -- 92 RM OP
Point Database # Descriptor Object Type Instan Desigo Name ce # Description Default Value Units Enumeration On Text Off Text 99 PLANT OPMODE MPrcVal 27 PltOpMod Plant operating mode Off -- 1:Off 2:Protect 3:Economy 4:PrComfrt 5:Comfort 6:Warm-up 7:CoolDown 8:RmLTProt 9:NUsed1 10:FreeCool 11:NghtCool 12:Vent 13:NUsed2 14:AVlFlOf 15:SmCtPoPr 16:SmCtNgPr 17:Purge -- -- 100 DCV IND EVAL MCalcVal 28 RAQualInd Room air quality indication Undef -- 1:Undef 2:Poor 3:Okay 4:Good -- -- 1
Point Database Object Type Instan Desigo Name ce # 109 2VAV CHGVR MPrcVal 591 110 SU AIR1DMD MCalcVal 592 111 SU AIR2DMD MCalcVal 593 # Descriptor Description Default Value Units Enumeration On Text Off Text Supply air VAV changeover condition 2 Neither -- 1:Neither 2:Heating 3:Cooling 4:Neutral -- -- VavSuAirDmd1 Supply air VAV air demand 1 f.
Issued by Smart Infrastructure Building Products 1000 Deerfield Pkwy Buffalo Grove IL 60089 Tel. +1 847-215-1000 Document ID A6V11692053 Edition 2019-04-01 © Siemens Industry, Inc. 2019 Technical specifications and availability subject to change without notice.
