Honeywell CVL4022ASVAV1 Engineering Manual
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Honeywell CVL4022ASVAV1 Engineering Manual

Honeywell CVL4022ASVAV1 Engineering Manual

Stryker lon vav system
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Environmental Combustion and Control
Stryker Lon VAV System Engineering Guide
September 2015
31-00083-02

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Summary of Contents for Honeywell CVL4022ASVAV1

  • Page 1 Environmental Combustion and Control Stryker Lon VAV System Engineering Guide September 2015 31-00083-02...

  • Page 2: Controller Communication

    LCD Wall Module to communicate via a two-wire, polarity The CVL Controllers are configurable direct digital controllers insensitive bus with the Honeywell Spyder and Stryker designed for pressure independent or pressure dependent controller families. The CVL controllers can be configured in single duct air terminal unit control solutions.
  • Page 3 APPLICATION being fed by the terminal box will use a TR2X Wall Module or a Zio (TR71/TR75 only) Digital Wall Module for space temperature determination and access to the LONWORKS VAV systems in commercial buildings typically incorporate a Bus network for operators. Fig. 1 shows a typical VAV box central air handler that delivers a modulated volume of air at a control application for the CVL4024NS-VAV1 controller.
  • Page 4 FEATURES — Window sensor — Bypass button • Occupant initiated Schedule Bypass • Reduces engineering and maintenance time, and ensures • Air Flow balance options: K factor and or two point using proper operation. Zio Wall Module as well as Network Tools. •...

  • Page 5: Control Provided

    Control Provided Pressure dependent control specifies that the damper position is controlled by space temperature only and not by a The CVL Controllers are primarily intended for pressure measurement of air flow volume. The amount of air delivered independent, single duct VAV box control. Pressure to the zone at any given damper position is dependent on the independent control specifies that the individual zone terminal static pressure in the supply air duct (physical position stops,...
  • Page 6 Table 3. Modes of Operation For CVL Controller Mode Description Events Causing a Controller to Switch to This Mode FLOW TRACKING Temperature control is turned off. Configuration parameter is box type (Flow_Tracking). The box maintains a Flow Setpoint TrackModeOffset (Flow Offset) determines the differential between based on the sum of all of the the boxes that are the supply air flow and the exhaust air flow.

  • Page 7: Specifications

    SPECIFICATIONS Electrical Inputs and Outputs Rated Voltage: 20-30 Vac; 50/60 Hz CVL4022AS-VAV1 has four universal input (UI) circuits, two Power Consumption: analog outputs (AO), and two digital Triac outputs (DO). 100 VA for controller and all connected loads Two Digital Outputs are reserved for the actuator. Controller only Load: 5 VA maximum, model CVL4024NS- CVL4024NS-VAV1 has four universal input (UI) circuits, two VAV1...

  • Page 8: Status Information

    Status Information • nvi - Network Variable Input • nvo - Network Variable Output The LED on the front of the controller provides a visual indication of the status of the device. When the controller Hardware receives power, the LED appears in one of the following Outputs allowable states, as described in Table 5.
  • Page 9 Accessories VAV box damper shaft and has up to 44 lb-in. (5 Nm) torque, 90-degree stroke, and 90 second timing at 60 Hz. The • 201052A, B, C Auxiliary Switches (one, two or three actuator is suitable for mounting onto a 3/8 to 1/2 in. (10 to 13 switches) mm) square or round VAV box damper shaft.
  • Page 10 TYPE A DAMPER DAMPER FLOW CW TO OPEN, CCW TO CLOSE TYPE B DAMPER FLOW CCW TO OPEN, CW TO CLOSE M2067C DAMPER SHAFT ROTATES Fig. 5. Determining the rotation direction (CW or CCW) for CLOCKWISE TO OPEN damper opening. M23569A Fig.

  • Page 11: Mount Controller

    a. Manually open the damper fully (rotate counterclockwise). DEPTH IS 2-1/4 (57) 4-13/16 (122) 4-13/16 (122) b. Using the Declutch button, rotate the universal shaft 4-1/8 (105) 4-1/8 (105) adapter fully counterclockwise. c. Mount the actuator to the damper box and shaft. 1 1 1 1 1 1 1 2 2 2 2 2 1 1 1 1 1 1 1 2 2 2 2 2 3 4 5 6 7 8 9 0 1 2 3 4...
  • Page 12 TOP TABS AIR FLOW PICKUP CONNECTOR TUBING DIN RAIL RESTRICTOR RESTRICTOR PORT PORT ΔP 1 1 1 1 1 1 1 2 2 2 2 2 3 4 5 6 7 8 9 0 1 2 3 4 BOTTOM FLEX M16815A CONNECTORS 1 2 3 4 5 6 7 8 9 0 1 2...
  • Page 13 to Class II restrictions (U.S. only), the transformer must not be larger than 100 VA. Fig. 10 depicts a single controller using ΔP one transformer. 1 1 1 1 1 1 1 2 2 2 2 2 3 4 5 6 7 8 9 0 1 2 3 4 IMPORTANT: Power must be off prior to connecting to or removing CONNECT POWER TO...
  • Page 14 Power Budget Table 8. VA ratings for transformer sizing. Device Description A power budget must be calculated for each device to determine the required transformer size for proper operation. CVL4022AS-VAV1 Controller and Actuator A power budget is simply the summing of the maximum power controllers and draw ratings (in VA) of all the devices to be controlled.

  • Page 15: Electrical Shock Hazard

    Fig. 12 that represents the The Honeywell transformers listed in Table 9 meet the NEMA worst case conditions.) When the I x R loss of four volts is standard DC20-1986. subtracted, only 18.9 volts reaches the controller. This is not Table 9.
  • Page 16 IMPORTANT: Power must be off prior to connecting to or removing ΔP connections from the 24 Vac power (24 Vac/24 Vac COM), 1 1 1 1 1 1 1 2 2 2 2 2 3 4 5 6 7 8 9 0 1 2 3 4 earth ground (EGND), and 20 Vdc power (20 Vdc) terminals.
  • Page 17 The theoretical limit for each LONWORKS® Bus segment is Honeywell provided cable types for LONWORKS® Bus 60 controllers. Up to 120 controllers can be configured when a communications wiring are Level IV 22 AWG (0.34 sq mm)

  • Page 18: Wiring Method

    Wiring Method Wiring Details Each controller is shipped with the digital outputs, which NOTE: When attaching two or more wires to the same switch the 24 Vac to the load (High Side). The three analog terminal, other than 14 AWG (2.0 sq mm), be sure to twist outputs (AO) are used to control modulating heating, cooling them together.
  • Page 19 IMPORTANT: If the controller is not connected to a good earth ground, the TERMINALS 13-24 controller's internal transient protection circuitry is compromised and the function of protecting the controller from 1 1 1 1 1 1 1 2 2 2 2 2 noise and power line spikes cannot be fulfilled.
  • Page 20 AIR FLOW PICKUP Δ 1 1 1 1 1 1 1 2 2 2 2 2 3 4 5 6 7 8 9 0 1 2 3 4 TR23 WALL MODULE SERIES OR REHEAT PARALLEL FAN STAGE CONTACTOR CONTACTORS 1 2 3 4 5 6 7 8 9 0 1 2 24 VAC –...
  • Page 21 TR23 WALL MODULE AIR FLOW PICKUP Δ 1 1 1 1 1 1 1 2 2 2 2 2 3 4 5 6 7 8 9 0 1 2 3 4 SERIES OR REHEAT PARALLEL FAN STAGE CONTACTOR CONTACTORS 1 2 3 4 5 6 7 8 9 0 1 2 24 VAC –...
  • Page 22 CHECKOUT Step 1. Check Installation and Wiring TERMINALS 13-24 Inspect all wiring connections at the controller terminals, and 1 1 1 1 1 1 1 2 2 2 2 2 verify compliance with installation wiring diagrams. If any 3 4 5 6 7 8 9 0 1 2 3 4 wiring changes are required, first be sure to remove power from the controller before starting work.
  • Page 23 Table 11. Status LED States LED State Blink Rate Status or Condition not applicable No power to processor, LED damaged, low voltage to board, or controller damaged. ON steady; Processor and/or not blinking controller is not operating. Very slow blink 1 second ON, Controller is operating (continuous)
  • Page 24 CONFIGURATION Table 12. Some important Configuration Options Option AscLon VAV Possible Configurations Damper Control 1. Series 60 floating actuator 2. Pulse width modulating actuator 3. Analog actuator 1. None 2. Parallel Temperature 3. Parallel Flow 4. Parallel Analog 5. Series Type of Reheat Coil 1.
  • Page 25 Reheat Type: Elec_ThreeStage or (Elec_ThreeStageBin), Proportional Reheat Flow: Enable. (Elec_OneStage). Periph Min Pos: 0% or greater. Proportional Reheat Flow: Enable. REHEAT COOLING MODE MODE REHEAT COOLING MODE MODE PERCENT FLOW OPEN FLOW (POS) (POS) REHEAT REHEAT FLOW FLOW FLOW FLOW FLOW (POS) (POS)
  • Page 26 REHEAT COOLING MODE AIR FLOW MODE SENSOR REHEAT PERCENT COIL (OPTIONAL) FLOW OPEN PRIMARY DISCHARGE T7770 REHEAT DAMPER FLOW OPEN TO ACTUATOR PLENUM VALVE RELAY FLOW 1 1 1 1 1 1 1 2 2 2 2 2 3 4 5 6 7 8 9 0 1 2 3 4 HeatOccSpt CoolOccSpt Periph Min Pos...
  • Page 27 EXHAUST TRACKING FLOW CONTROL An example of Exhaust Tracking is shown in Fig. 33. To PARALLEL configure Exhaust Tracking Flow Control Application in the tool, follow the configurations shown in the table below (see RETURN AIR FROM PLENUM FLOW “Flow balancing” on page 34 for more information on SENSOR parameters).

  • Page 28: Pid Control

    COLD DUCT SUPPLY T7770 FLOW DISCHARGE SENSOR SPACE 1 1 1 1 1 1 1 2 2 2 2 2 3 4 5 6 7 8 9 0 1 2 3 4 TEMP CONTROLLER nvoFLOW NUMBER 1 TRACK 1 2 3 4 5 6 7 8 9 0 1 2 FLOW T7770 FLOW...

  • Page 29: Proportional Control

    Else if (V x 100% + M) > 100% Then 100% Else (V x 100% + M) V = Ep + Ei + Ed Fig. 35. Proportional reverse acting (heating) In a direct acting control loop the output increases as the input sensor value rises above the setpoint.

  • Page 30: Integral Control

    INTEGRAL CONTROL The purpose of the integral function is to eliminate the offset inherent in proportional control. Integral control functions to hold the input sensor value at setpoint. See Fig. 14 Fig. 37. Proportional control Fig. 36. Proportional Integral control The integral function is a result of proportional error and time.
  • Page 31 CONTROL LOOP INPUTS The control loop has seven control inputs plus four setpoint override inputs, each has a specific purpose. Only the Main Sensor is required for control loop operation. All other sensors are optional depending on the application that the control loop is configured for Input Name Type...

  • Page 32: Setpoint Reset

    controlled by time and events. All setpoint values are in units The accessory loop determines the occupancy state based on of the main input sensor. If a Setpoint input is configured and the configured occupancy input. Occupancy input can be is valid, the effective setpoint value is equal to the setpoint configured as a local digital input or can also be configured to input value.
  • Page 33 3. From the Setpoints tab 3. The Setpoints and Setpoint Reset fields are ignored a. Enter the desired setpoint in the Occupied box since Setpoint and Occupancy Status were not chosen on the Inputs tab. The setpoint used will always follow the effective setpoint from the main application of the controller.
  • Page 34 1. Open the VAV Inputs Section Lighting controlled from internal application occupancy a. Select Outdoor Air Temperature Input Source as using pulse on/off relays “Network Input OdTemp Only”. This step configures An accessory loop is not necessary for pulsed lighting control. the logical value for outdoor air temperature.
  • Page 35 The tool commands the controller to the manual flow override 7. Monitor the flow pressure signal for stability: PRS_U- mode and sets the flow setpoint as the configured maximum 8. Navigate to Parameters, SNSR_CAL, PRESS_OF flow setpoint. The tool then continuously checks/monitors the controller to see whether the box flow reaches the setpoint.

  • Page 36: Alarm Reporting

    20. Navigate to PARAMETERS, BALANCE, MIN_FLOW nvoAlarmH: If an alarm condition is detected, the 21. Set the measured minimum flow calibration value: corresponding alarm is reported to a supervisory node via MIN_FLOW = measuredValue nvoAlarmH. nvoAlarmH reports only one alarm or return to 22.
  • Page 37 Table 13. Mapping of Error conditions to Alarm IDs Bit position in nvoError and nciAlarmInhibit AlarmID reported via Bit position in Error Description (See Note a.) nvoAlarmH.type nvoAlarmStatus On board Pressure sensor Failure (UI0) 1 (Sensor Failure Alarm) Sensor connected to UI1 has failed Sensor connected to UI2 has failed Sensor connected to UI3 has failed Sensor connected to UI4 has failed...

  • Page 38: Fault Tolerance

    NOTE: a: nvoError and nciAlarmInhibit are implemented NOTE: b: To communicate successfully with an Asc VAV as arrays of bytes. Each bit refers to a specific device, TR71/TR75 devices must be configured error and is identified by the bit position. For with the address 1 and the C7400S sensor must example Bit position 20 means the 4th bit in the be configured with the address 8.

  • Page 39: Input Configurations

    DETAILED LIST OF NVS/POINTS This section lists all the Lon network variables available in the controller. Input Configurations Table 15. Local Input Configuration AP Internal NCI/Field Net Data Type Default Val Units Description nciUI1 Local Universal Input Configuration type ubyte Universal input type 0: 20 Kntc (UI_20Kntc) 1: TR2x 20Kntc (UI_TR2xSensor)
  • Page 40 Table 15. Local Input Configuration (Continued) AP Internal Description NCI/Field Net Data Type Default Val Units nciUI4 Local Universal Input Configuration type ubyte Universal input type 0: 20 Kntc (UI_20Kntc) 1: TR2x 20Kntc (UI_TR2xSensor) 2: TR2x SetPt Absolute (UI_TR2xSetPtAbs) 3: TR2x SetPt Relative (UI_TR2xSetPtRel) 4: RH 0 to 10 vdc (UI_RH_0_10vdc) 5: RH 2 to 10 vdc (UI_RH_2_10vdc) 6: CO2 0 to 2000 ppm (UI_CO2)
  • Page 41 Table 15. Local Input Configuration (Continued) AP Internal Description NCI/Field Net Data Type Default Val Units out4 uint16 out5 uint16 out6 uint16 out7 uint16 out8 uint16 out9 uint16 out10 uint16 out11 uint16 out12 uint16 nciCstmSnsr2 Custom Sensor #2 Configuration sensorType ubyte Sensor type 0: voltage...
  • Page 42 Table 15. Local Input Configuration (Continued) AP Internal Description NCI/Field Net Data Type Default Val Units out8 uint16 out9 uint16 out10 uint16 out11 uint16 out12 uint16 nciSbusSnsr Sbus Sensor Configuration C7400sDisable ubyte Disable Sbus sensor C7400s temp & RH 0: sensor enabled 1: sensor disabled Notes: The C7400S sensor address must be programmed as Sbus...
  • Page 43 Table 16. Logical Inputs Enumeration Table (Continued) Ordinal Nickname FlowPressCal nviFree1Mod OdTempLogical VavHtgSP VavClgSP WallModCntrSP Airflow DmprPos ReheatMod PeriphHtgMod FanMod TeminalLoad AcLp1PID AcLp2PID AcLp1Reset AcLp2Reset Undefined LOGICAL INPUT CONFIGURATION Table 17. Logical Input Configuration Net Data Default NCI/Field Type Description nciLogicalInAcc Accessory loop logical input configuration 31-00083—02...
  • Page 44 Table 17. Logical Input Configuration (Continued) Net Data Default NCI/Field Type Description Acc1Sensor ubyte control loop 1 sensor Application Units: unrestricted analog value ≤ ≤ range UI_1outLive UI_2outLive UI_3outLive UI_4outLive C7400sTempYSnapshot C7400sRHYSnapshot SpcTempLogicalEFF_OUTPUTSnapshot SpcRHLogicalEFF_OUTPUTSnapshot SpcCO2LogicalEFF_OUTPUTSnapshot SplyTempLogicalEFF_OUTUTSnapshot DatLogicalEFF_OUTPUTSnapshot FlowPressCalOUTPUTSnapshot nviFree1Mod_levPercentoutSnapshot OdTempLogicalEFF_OUTPUTSnapshot 255 Undefined Acc1Setpoint ubyte...
  • Page 45 Table 17. Logical Input Configuration (Continued) Net Data Default NCI/Field Type Description Acc1Reset ubyte control loop 1 reset sensor Application Units: unrestricted analog value ≤ ≤ range UI_1outLive UI_2outLive UI_3outLive UI_4outLive C7400sTempYSnapshot C7400sRHYSnapshot SpcTempLogicalEFF_OUTPUTSnapshot SpcRHLogicalEFF_OUTPUTSnapshot SpcCO2LogicalEFF_OUTPUTSnapshot SplyTempLogicalEFF_OUTUTSnapshot DatLogicalEFF_OUTPUTSnapshot FlowPressCalOUTPUTSnapshot nviFree1Mod_levPercentoutSnapshot OdTempLogicalEFF_OUTPUTSnapshot WallModCntrSPYSnapshot AirFlowOUTPUTSnapshot...
  • Page 46 Table 17. Logical Input Configuration (Continued) Net Data Default NCI/Field Type Description Acc1Disable ubyte control loop 1 disable signal Application Units: Binary Value ≤ ≤ range UI_1outLive UI_2outLive UI_3outLive UI_4outLive nviDlcShed_stateoutSnapshot HtgStg1OUTPUTSnapshot RHStageDriverSTAGE2Snapshot RHStageDriverTAGE3Snapshot PerphHtgSTAGE1Snapshot Disable_Clg_TChgOUTPUTSnapshot Disable_Htg_TChgOUTPUTSnapshot FanOnEFF_OUTPUTSnapshot FrzPrtctOUTPUTSnapshot nviMonDigOUTPUTSnapshot Free1DigOUTPUTSnapshot 255 Undefined Acc1Occ...
  • Page 47 Table 17. Logical Input Configuration (Continued) Net Data Default NCI/Field Type Description Acc2Sensor ubyte control loop 2 sensor Application Units: unrestricted analog value ≤ ≤ range UI_1outLive UI_2outLive UI_3outLive UI_4outLive C7400sTempYSnapshot C7400sRHYSnapshot SpcTempLogicalEFF_OUTPUTSnapshot SpcRHLogicalEFF_OUTPUTSnapshot SpcCO2LogicalEFF_OUTPUTSnapshot SplyTempLogicalEFF_OUTUTSnapshot DatLogicalEFF_OUTPUTSnapshot FlowPressCalOUTPUTSnapshot nviFree1Mod_levPercentoutSnapshot OdTempLogicalEFF_OUTPUTSnapshot 255 Undefined Acc2Setpoint ubyte...
  • Page 48 Table 17. Logical Input Configuration (Continued) Net Data Default NCI/Field Type Description Acc2Reset ubyte control loop 2 reset sensor Application Units: unrestricted analog value ≤ ≤ range UI_1outLive UI_2outLive UI_3outLive UI_4outLive C7400sTempYSnapshot C7400sRHYSnapshot SpcTempLogicalEFF_OUTPUTSnapshot SpcRHLogicalEFF_OUTPUTSnapshot SpcCO2LogicalEFF_OUTPUTSnapshot SplyTempLogicalEFF_OUTUTSnapshot DatLogicalEFF_OUTPUTSnapshot FlowPressCalOUTPUTSnapshot nviFree1Mod_levPercentoutSnapshot OdTempLogicalEFF_OUTPUTSnapshot WallModCntrSPYSnapshot AirFlowOUTPUTSnapshot...
  • Page 49 Table 17. Logical Input Configuration (Continued) Net Data Default NCI/Field Type Description Acc2Disable ubyte control loop 2 disable signal Application Units: Binary Value ≤ ≤ range UI_1outLive UI_2outLive UI_3outLive UI_4outLive nviDlcShed_stateoutSnapshot HtgStg1OUTPUTSnapshot RHStageDriverSTAGE2Snapshot RHStageDriverTAGE3Snapshot PerphHtgSTAGE1Snapshot Disable_Clg_TChgOUTPUTSnapshot Disable_Htg_TChgOUTPUTSnapshot FanOnEFF_OUTPUTSnapshot FrzPrtctOUTPUTSnapshot nviMonDigOUTPUTSnapshot Free1DigOUTPUTSnapshot 255 Undefined Acc2Occ...
  • Page 50 Table 17. Logical Input Configuration (Continued) Net Data Default NCI/Field Type Description SpcRH ubyte Space humidity Application Units: percent ≤ ≤ range UI_1outLive UI_2outLive UI_3outLive UI_4outLive nviSpaceRH_levPercentoutSnapshot C7400sRHYSnapshot ZioRHYSnapshot 255 Undefined SpcCO2 ubyte Space CO2 value Application Units: ppm ≤ ≤...
  • Page 51 Table 17. Logical Input Configuration (Continued) Net Data Default NCI/Field Type Description SplyTemp ubyte Supply air temperature value to the VAV zone terminal Application Units: F ≤ ≤ range UI_1outLive UI_2outLive UI_3outLive UI_4outLive C7400sTempYSnapshot nviSupplyTemp_tempPoutSnapshot 255 Undefined OdTemp ubyte Outdoor air temperature value Application Units: F ≤...
  • Page 52 Table 17. Logical Input Configuration (Continued) Net Data Default NCI/Field Type Description StaticPress ubyte Static pressure value. Connected to the network output nvoStaticP. Typically used to monitor duct or building static pressure. Application Units: pressure inWc ≤ ≤ range UI_1outLive UI_2outLive UI_3outLive UI_4outLive...
  • Page 53 Table 17. Logical Input Configuration (Continued) Net Data Default NCI/Field Type Description WindowOpen ubyte Window open sensor. Application Units: Binary Value ≤ ≤ range UI_1outLive UI_2outLive UI_3outLive UI_4outLive 255 Undefined HtgClgChgOvr ubyte Heating changeover switch. Typically used to determine if warm heating air is supplied to the zone terminal.
  • Page 54 Table 17. Logical Input Configuration (Continued) Net Data Default NCI/Field Type Description WallModOvrdBut ubyte Wall module occupancy override button. Typically used with the conventional wall module. Must be connected to UI1 on Spyder Micro hardware. Application Units: Binary Value ≤ range ≤...
  • Page 55 Table 17. Logical Input Configuration (Continued) Net Data Default NCI/Field Type Description PeriphHtgMin ubyte Peripheral heating valve minimum position. Typically used to connect an accessory loop reset schedule. ≤ ≤ range nviFree1Mod_levPercentoutSnapshot AccPid1OUTPUTSnapshot AccPid2OUTPUTSnapshot Acc1ResetEFF_OUTPUTSnapshot Acc2ResetEFF_OUTPUTSnapshot 255 Undefined Table 18. Local Output Configuration NCI/Field Net Data Type Default Val...
  • Page 56 Table 18. Local Output Configuration (Continued) NCI/Field Net Data Type Default Val Description pwmPer SNVT_ 25.6 PWM period in seconds time_sec 1 ≤ ≤ 3276.7 sec range Precision: 1 (data entry in seconds) pwmZero SNVT_ PWM zero time in seconds time_sec 1 ≤...
  • Page 57 Table 18. Local Output Configuration (Continued) NCI/Field Net Data Type Default Val Description nciFloat1 Configure floating output Pin1 = DO3 (DO must be configured binary, nciDO3.type = Pin2 = DO4 (DO must be configured binary, nciDO4.type = Note: To free up binary outputs DO3 & DO4, set the travelTime = 0 action ubyte Reverse action...
  • Page 58 Table 18. Local Output Configuration (Continued) NCI/Field Net Data Type Default Val Description nciFloat2 Configure floating output Pin1 = DO1 (DO must be configured binary, nciDO1.type = Pin2 = DO2 (DO must be configured binary, nciDO2.type = Note: To free up binary outputs DO1 & DO2, set the travelTime = action ubyte Reverse action...
  • Page 59 LOGICAL OUTPUTS ENUMERATION DESCRIPTION Table 19. Logical Outputs Enumeration Description Ordinal Nickname Enumeration Tag Description AO1in Analog output #1 AO2in Analog output #2 DO1in Binary output #1 DO2in Binary output #2 DO3in Binary output #3 DO4in Binary output #4 Float1 Float1in Floating modulating output #1 Float2...
  • Page 60 Table 20. Logical Output Configuration (Continued) Net Data Default NCI/Field Type Description Ac1Stg2 ubyte Accessory Loop #1 digital output Stage #2 Output Type: Binary Default: Undefined ≤ ≤ range AO1in AO2in DO1in DO2in DO3in DO4in 255 Undefined Ac1Stg3 ubyte Accessory Loop #1 digital output Stage #3 Output Type: Binary Default: Undefined ≤...
  • Page 61 Table 20. Logical Output Configuration (Continued) Net Data Default NCI/Field Type Description Ac2Stg1 ubyte Accessory Loop #2 digital output Stage #1 Output Type: Binary Default: Undefined ≤ ≤ range AO1in AO2in DO1in DO2in DO3in DO4in 255 Undefined Ac2Stg2 ubyte Accessory Loop #2 digital output Stage #2 Output Type: Binary Default: Undefined ≤...
  • Page 62 Table 20. Logical Output Configuration (Continued) Net Data Default NCI/Field Type Description Ac2Aux ubyte Accessory Loop #2 digital output Auxiliary control. Output active with the modulating output value or staged output. Output Type: Binary Default: Undefined ≤ range ≤ AO1in AO2in DO1in DO2in...
  • Page 63 Table 20. Logical Output Configuration (Continued) Net Data Default NCI/Field Type Description HtgStg2 ubyte Zone terminal Heating stage 2 Output Type: Binary Default: Undefined ≤ ≤ range AO1in AO2in DO1in DO2in DO3in DO4in 255 Undefined HtgStg3 ubyte Zone terminal Heating stage 3 Output Type: Binary Default: Undefined ≤...
  • Page 64 Table 20. Logical Output Configuration (Continued) Net Data Default NCI/Field Type Description FanDig ubyte Fan start stop Output Type: Binary ≤ ≤ range AO1in AO2in DO1in DO2in DO3in DO4in 255 Undefined AuxDig ubyte Auxiliary digital output. Output is active when the effective occupancy = Occupied Output Type: Binary Default: Undefined...
  • Page 65 Table 20. Logical Output Configuration (Continued) Net Data Default NCI/Field Type Description AuxPlsOff ubyte Auxiliary pulse OFF output. Typically connected to a lighting relay. The output is pulsed when the effective occupancy changes not occupied. Output Type: Binary Default: Undefined ≤...
  • Page 66 Table 20. Logical Output Configuration (Continued) Net Data Default NCI/Field Type Description FreePlsOff ubyte Free digital pulse OFF output. Typically connected to a lighting relay. The output is controlled from the network command through nviFree1Dig. Output Type: Binary Default: Undefined ≤...
  • Page 67 Table 20. Logical Output Configuration (Continued) Net Data Default NCI/Field Type Description PrphHtgMod ubyte Peripheral heat modulating output number 1. Default: Undefined ≤ ≤ range AO1in AO2in DO1in DO2in DO3in DO4in Float1in Float2in 255 Undefined FanMod ubyte Fan modulating output Output Type: PWM, Float, Analog current or voltage Default: AO2 ≤...
  • Page 68 AO2in DO1in DO2in DO3in DO4in Float1in Float2in 255 Undefined LedMod ubyte Wall module Occupancy status LED output. Honeywell Conventional Wall Module: Output SubType: AO_0_10vdcDir Retrofit Jobs: Output SubType: AO_0_10vdcDir, AO_0_20maDir Default: Undefined ≤ ≤ range AO1inLive AO2inLive 255 Undefined Effective Override...

  • Page 69: Network Variable - Inputs

    NETWORK VARIABLE - INPUTS Table 21. Network Variable - Inputs Net Data Type AP Internal Nv/field SNVT Units Description nviApplicMode hvac_mode hvac_mode This network input is used to switch between off, auto, heating and cooling. 0 – Auto reheating and cooling enabled 1 –...
  • Page 70 Table 21. Network Variable - Inputs (Continued) Net Data Type AP Internal Nv/field SNVT Units Description nviEmergCmd hvac_emerg hvac_emerg Emergency network input command that overrides normal control action during a given emergency (such as a fire). The valid enumerated values have the following meanings: 0 –...
  • Page 71 Table 21. Network Variable - Inputs (Continued) Net Data Type AP Internal Nv/field SNVT Units Description flow SNVT_flow Manual flow value (cfm). The value used when nviFlowOverride.state is set to a value of “2”. range 0 … 138858 cfm nviFlowTrack flow This NVI is bound to the nvoFlowTrack of the previous node in the flow tracking daisy chain.
  • Page 72 Table 21. Network Variable - Inputs (Continued) Net Data Type AP Internal Nv/field SNVT Units Description nviManOcc occupancy occupancy Network command to force the VAV box into a specific manual occupancy mode. This is an input from a network connected operator interface or other node that indicates the state of a manual occupancy control thus over riding the scheduled occupancy state.
  • Page 73 Table 21. Network Variable - Inputs (Continued) Net Data Type AP Internal Nv/field SNVT Units Description nviSetPoint temp_p Input network variable used to determine the temperature control point (center setpoint) of the node. If nviSetPoint is valid, then it is used to determine the control point of the node.
  • Page 74 Table 21. Network Variable - Inputs (Continued) Net Data Type AP Internal Nv/field SNVT Units Description nviShare In some cases a sending node(master VAV controller) with a wall module may be used to control the damper, ReHeat and Peripheral heat of one or more other receiving nodes (satellite VAV controllers) that do not have a wall module.
  • Page 75 Table 21. Network Variable - Inputs (Continued) Net Data Type AP Internal Nv/field SNVT Units Description ReheatCmd lev_percent Indicates the amount of modulating ReHeat that should be turned on in the receiving nodes. ≤ ≤ range 100% TempFlowCmd lev_percent Output command of the temperature control loop in terms of percentage (%) of flow capacity mapped to the minimum - maximum flow range (zero percent as minimum flow and 100% as maximum flow).

  • Page 76: Network Variable - Outputs

    Table 21. Network Variable - Inputs (Continued) Net Data Type AP Internal Nv/field SNVT Units Description nviValveOvrd Allows override of valves for hydronic balancing. Writing of 0-100% overrides valve position or percent number of stages to commanded value. Writing invalid (NaN) or (+inf) reverts to automatic operation.
  • Page 77 Table 22. Network Variable - Outputs (Continued) Nv/field Net Data Type Description FanOvrd UBIT Fan in manual override state. Frost UBIT Space low temperature (42.8F) alarm IAQalm UBIT The indoor air quality sensor has detected that the indoor air quality is poorer than the desired standard.
  • Page 78 Table 22. Network Variable - Outputs (Continued) Nv/field Net Data Type Description Mode ubyte Indicates the current mode of the node determined by many inputs and arbitrated by control logic. 0 - Startup wait 1 - Heat 2 - Cool 3 - Reheat 4 –...
  • Page 79 Table 22. Network Variable - Outputs (Continued) Nv/field Net Data Type Description HeatStages 3bits Heating stages active ≤ range ≤ PeriphHeatOn Ubit Peripheral heat stage 1 0: inactive 1: active AuxOn Ubit Auxiliary circuit status 0 - effective occupancy is not Occ 1- effective occupancy is Occ FanOn Ubit...
  • Page 80 Table 22. Network Variable - Outputs (Continued) Nv/field Net Data Type Description BoxFlowControlPt SNVT Box airflow setpoint flow ≤ range ≤ 138850 cfm BoxFlow SNVT Box airflow flow ≤ ≤ range 138850 cfm DamperPos SNVT Airflow damper position lev_cont ≤ ≤...
  • Page 81 Table 22. Network Variable - Outputs (Continued) Nv/field Net Data Type Description nvoFanOn SNVT Indicates the fan status switch State Value Meaning SW_OFF Fan output inactive SW_ON 0 < Fan output active SW_NUL Fan output inactive nvoFlowTrack SNVT Reports the air flow measured at this node plus nviFlowTrack. If a flow sensor error flow has been detected or PressureDependent is True, then FlowTrackOut is set to Invalid.
  • Page 82 Table 22. Network Variable - Outputs (Continued) Nv/field Net Data Type Description nvoReheatPos SNVT_ Reheat commanded control position. lev_percent -163% ≤ range ≤ 163% nvoReheatStgs count Number of active heating coil stages. ≤ ≤ range nvoSbusSensors ZioTemp SNVT Calibrated Zio wall module temperature value. temp_p Output = SbusValue + nciWallModZio.TempOffset ≤...
  • Page 83 Table 22. Network Variable - Outputs (Continued) Nv/field Net Data Type Description Mode SNVT Master Node Status count_inc 0 - Startup wait 1 - Heat 2 - Cool 3 - Reheat 4 – Morn_Warm 5 – Night Purge 6 – Pressurize 7 –...
  • Page 84 Table 22. Network Variable - Outputs (Continued) Nv/field Net Data Type Description nvoTerminalLoad SNVT The effective loading on the controller. A positive value indicates a cooling load and lev_percent a negative value will indicate that there is a heating load. The Terminal Load calculation is controlled by nciCZS.type Conventional calculation uses the PID output of heating and cooling controls.
  • Page 85 Table 22. Network Variable - Outputs (Continued) Nv/field Net Data Type Description fan_output If a fan is configured as one speed, This value is 100 percent, when the fan is running and is zero when the fan is not running. If a modulating fan is configured, reports the fan speed in percentage.

  • Page 86: Configuration Parameters

    CONFIGURATION PARAMETERS Table 23. Configuration Parameters Net Data Default Internal NCI/Field Type Units Description nciBalanceSetPts BoxZeroOffset SNVT pascal Airflow pressure sensor zero calibration offset. This value is press_f subtracted from the sensor input. Precision: 1 KFactorOffset SNVT VAV Box cooling air K factor calibration parameter. This factor is count_inc_f used by the Balancing tool to increment the factory K factor setting.
  • Page 87 Table 23. Configuration Parameters (Continued) Net Data Default Internal NCI/Field Type Units Description FractionOfMaxAirFlow float Fraction of maximum airflow added to the minimum airflow setpoint while coordinating CO2 with the effective airflow setpoint. ≤ ≤ range Precision: 3 Notes: Set this value to zero to disable CO2 ventilation. nciCool TR Temp-Delta ∆F...
  • Page 88 Table 23. Configuration Parameters (Continued) Net Data Default Internal NCI/Field Type Units Description Type ubyte VAV box fan configuration 0: No Fan 1: Series Fan, fan runs when occupied or standby (When nciOccStandby = 1). A Series Fan configuration should be combined with pressure independent airflow control.
  • Page 89 Table 23. Configuration Parameters (Continued) Net Data Default Internal NCI/Field Type Units Description Type ubyte Flow Control Type 0 – Normal, The flow is controlled to satisfy the temperature control algorithm. 1 – Flow Tracking, The temperature control is turned off and the air flow set point equals the sum FlowTrackIn and TrackModeOffset.
  • Page 90 Table 23. Configuration Parameters (Continued) Net Data Default Internal NCI/Field Type Units Description DeadBand Speed The flow control deadband. This is configured based on the damper motor speed. Since airflow control is implemented in face velocity, the deadband is in feet per minute. Floating Actuators Motor Speed (sec)
  • Page 91 Table 23. Configuration Parameters (Continued) Net Data Default Internal NCI/Field Type Units Description FilterFlow ubyte Airflow low pass (10 sec time constant) filter enable. Warning: Enable filter only when the pressure pickup is installed in a turbulent airflow environment with unstable airflow control issues. 0: filter disabled 1: filter enabled Notes:...
  • Page 92 Table 23. Configuration Parameters (Continued) Net Data Default Internal NCI/Field Type Units Description TrackModeOffset SNVT cfm Flow tracking offset. This value is used when the flow_f FlowControlType = FlowTracking The temperature control is turned off and the airflowSP = FlowTrackIn + TrackModeOffset ≤...
  • Page 93 Table 23. Configuration Parameters (Continued) Net Data Default Internal NCI/Field Type Units Description MornWarm ubyte The controller may receive a morning warm-up command from the air equipment control so that the control will change to operate with warm supply air. The morning warm-up types supported are listed below: 0: MornMixedAir -Warm air is being supplied via the duct, the temperature control is turned off, and either the damper Position or...
  • Page 94 Table 23. Configuration Parameters (Continued) Net Data Default Internal NCI/Field Type Units Description nciKFactor SNVT 1400 VAV Box cooling air K factor used to calculate the flow value. count_inc_f Refer to Appendix K for specific values 0 < range ≤ 10000 K = Airflow / (Pv) Pv: differential flow press (InWc) Airflow: airflow (CFM)
  • Page 95 Table 23. Configuration Parameters (Continued) Net Data Default Internal NCI/Field Type Units Description nciPwrUpDisable SNVT Controller power up disable time. Local logical digital outputs are time_sec disabled for a fixed time at power up. Emergency mode bypasses the power up disable. ≤...
  • Page 96 Table 23. Configuration Parameters (Continued) Net Data Default Internal NCI/Field Type Units Description nciTempSetpoints SNVT Room Temperature setpoints. temp_setpt ≤ ≤ range 100F Precision: 1 ≤ ≤ ≤ unoccupied_heat standby_heat occupied_heat ≤ ≤ occupied_cool standby_cool unoccupied_cool occupiedCool standbyCool unoccupiedCool occupiedHeat standbyHeat unoccupiedHeat nciWallModCom...
  • Page 97 Table 23. Configuration Parameters (Continued) Net Data Default Internal NCI/Field Type Units Description Type ubyte Wall module type 0: None 1: Conventional Wall module(TR20) 2: Zio TR71 or TR75 MinHtgSetPt SNVT Low limit on occupied heating setpoint. temp_p ≤ ≤ range MaxHtgSetPt Precision: 1...
  • Page 98 Table 23. Configuration Parameters (Continued) Net Data Default Internal NCI/Field Type Units Description ubyte Fan Control (Future) Notes: This is a future field not supported in the current release. TempOffset SNVT_ Zio on board temperature sensor calibration offset. Offset value is ∆F temp_diff_p added to the raw sensor value.

  • Page 99: Abbreviations And Definitions

    ABBREVIATIONS AND NV - Network Variable; controller parameter that can be viewed or modified over the network. DEFINITIONS Module; used to allow user-adjusted setpoints to be input into the Controller. Abbreviations PWM - Pulse Width Modulated output; allows analog modulating control of equipment using a digital output on the AHU - Air Handling Unit;...
  • Page 100 Pressure Dependant and Pressure Pressure Independent VAV Boxes Independent Control Pressure-independent or variable constant-volume VAV boxes are essentially air flow control devices that deliver a constant Static pressure variations in an air handling system can affect volume of air to a conditioned space at a given temperature terminal unit operation.
  • Page 101 Induction VAV Boxes dramatic effect on the amount air delivered to the zone. The control strategy used in single zone reheat systems is simple Induction VAV boxes use induced return air as the reheat and involves activating electric heat or positioning a valve in medium which means no parallel fan is present in the VAV conjunction to the zone temperature.

  • Page 102: Common Operations

    APPENDIX Common Operations Bypass Mode During Unoccupied periods, the facility occupant can This Appendix describes some of the common control sequences supported by the AscVAV controller. request that Occupied temperature control setpoints be observed by depressing the Bypass pushbutton on the Room Temperature Sensor (RmTemp) wallmodule.
  • Page 103 OverridePriority Night Purge The controller uses a Last-in-Wins scheme to determine If a terminal unit is put into the Night Purge mode, the effective override state if override is done both from the wall controller performs the following functions (It): module as well as from the network.
  • Page 104 By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to, the literature. You will defend and indemnify Honeywell, its affiliates and subsidiaries, from and against any liability, cost, or damages, including attorneys’...

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