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Trane VariTrac Dampers User's Manual

1. TRANE VAV SVU01A EN Figure 46 Example of System Status Screen page 5 System Status System Name Sales Department Unit Worst Zone Deviation 2 9 F Worst Zone 1 Q K to Economize No Min 0 4 Damper Setpoint 10 0 4 Damper Position 10 Outdoor Air Temperature 63 8 F Page 5 of 5 System Name Identifies this VariTrac system by name editable Worst Zone Deviation Indicates how far the worst zone or F is from setpoint Worst Zone Indicates which zone is presently furthest from setpoint The following lines appears only when connected to a Voyager or Reliatel unit with an economizer OK to Economize Indicates whether outdoor air is currently OK for free cooling Min O A Damper Setpoint Indicates the current ventilation setpoint for the outdoor air damper as a of damper stroke O A Damper Position Indicates current position of the outdoor air damper as a of damper stroke Outdoor Air Temperature Indicates the current temperature as reported by the outdoor air sensor in the Voyager or Reliatel unit 95 Advanced Functions 96 TRANE Zone Setup and Status The Zone Setup and Status section of the Advanced function allows you to perform in depth setup up and monitoring of the VAV UCMs attached to the system There are two parts to this section Zone Setup Zone Status Zone Setup Zone Setup consists of five pages Page 5 only displays if the VAV UCM is Vers
2. 1 2 3 Press Advanced Press System Setup and Status Press System Status The first System Status screen displays See Figure 42 Figure 42 Example of System Status Screen page 1 System Status System Name Sales Department Unit Unit Brand Trane Unit Type Voyager Neuron ID 00 03 69 15 34 00 HVAC Unit Comm Yes HVAC Comm Status Up ICS System No System Configuration Changeover Bypass Page 1 of 5 AE amp 7 System Name Identifies this VariTrac system by name editable Unit Type HVAC unit type for which the CCP is configured Neuron ID Echelon Neuron ID of this CCP HVAC Unit Comm Indicates whether the CCP has ever communicated with a Voyager or Reliatel rooftop unit HVAC Comm Status Indicates whether communications to the HVAC unit are presently up or down This line appears only when connected to a Voyager or Reliatel unit ICS System Indicates whether the CCP has ever communicated with an ICS system such as Tracker Version 10 ICS Comm Status Is communication to the ICS system presently up or down This line appears only if the CCP has communicated with an ICS system System Configuration Indicates whether the CCP has auto configured to a changeover bypass or delivered VAV system 91 TRANE Advanced Functions Figure 43 Example of System Status Screen page 2 System Status System Name Sales Department Unit Operating Made Occupied Operating Status Cool Sup
3. Controller Operator Guide Vari Trac Central Control Panel VAV SVU01A EN TRANE VariTrac Central Control Panel Operation Guide This guide and the information in it are the property of American Standard Inc and shall not be used or reproduced in whole or in part except as intended without the written permission of American Standard Inc Since Trane has a policy of continuous product improvement it reserves the right to change design and specification without notice Use of the software contained in this package is provided under a software license agreement Unauthorized use of the software or related materials discussed in this manual can result in civil damages and criminal penalties The terms of this license are included with the compact disc Please read them thoroughly Trane has tested the system described in this manual However Trane does not guarantee that the system contains no errors Trane reserves the right to revise this publication at any time and to make changes to its content without obligation to notify any person of such revision or change Trane may have patents or pending patent applications covering items in this publication By providing this document Trane does not imply giving license to these patents The following are trademarks or registered trademarks of Trane Comfort Manager Reliatel Tracker Trane VariTrac VariTrane and Voyager Windows is a registered trademark of Microso
4. The CCP provides coordination monitoring and diagnostics for the VariTrac zone control system It is responsible for communicating with the zone dampers to determine space heating and cooling requirements and selecting the mode and number of stages for the heating and cooling unit to meet those needs The VariTrac CCP is designed to provide coordinated control of up to 24 VAV zones and one air handling unit The CCP can be controlled and monitored from an upper level system such as a Tracker Version 10 VariTrac can also function as a stand alone device with its occupied unoccupied function initiated by the time clock built into the CCP operator display or by a binary input from an external time clock or other contact closure Communicating Sensor Bypass Control Assembly The communicating duct sensor assembly consists of a static pressure sensor supply airtemperature sensor and communicating zone UCM board combined into one enclosure This device performs the following functions e Measures the air pressure in the main supply duct e Monitors the temperature of the air in the main supply duct e Controls the position of the bypass damper e Communicates all this information to the CCP General Information TRANE Bypass Damper s The main supply duct bypass damper s are modulated by the CCP via the communicating sensor bypass control assembly to maintain consistent supply duct static pressure Zone Damper with UCM and
5. 1 System Name Sales Department Unit 2 Operating Mode Occupied Operating Status Cool Supply Air Temperature 77 5 F Supply Air Tempering Disabled Bypass Position 32 Supply Fan On Fan Static Pressure 0 42 in wig Fan Static Pressure Setpoint 0 50 in vg Page 2 of 5 Data Entry Screens Data entry screens enable you to enter numeric values and alpha characters There are four types of data entry screens Analog data entry Time entry Date entry Alphanumeric data VAV SVUO1A EN TRANE Analog Data Entry Screen The analog data entry screen enables you to change analog data Between the title bar and navigation buttons are numeric data entry buttons The OK and Clear buttons display at the bottom of the screen A decimal point button enables you to type tenths To select a digit the decimal point and the minus sign press the appropriate data entry buttons Type the data using the format NN N As you type the data it displays in the Change to field Use the Clear button to delete the contents of the change field when necessary When you have finished typing in the data press the OK button The date entry screen and time entry screen are similar to the analog data entry screen enabling you to enter current date and time The time screen includes buttons for AM and PM The date screen adds buttons for month selection Figure 6 Example of Analog Data Entry Screen Enter a Number Curren
6. 28 TRANE When the UCM calls for local heat to operate the damper goes to the minimum heating position as edited before the heating output is energized If using UCM Version 4 0 or greater a Separate minimum local heating position setpoint is available The UCM goes to this position as edited provided the setpoint is available and enabled If the minimum local heating position setpoint is not enabled the normal minimum heating position is used Priority Local Heat Priority local heat can be controlled via an entry on the VariTrac CCP setup menu If priority local heat is enabled zones control their local heat to the heating setpoint for that zone If priority local heat is disabled zones control their local heat to the heating setpoint minus 2 F for that zone Stand alone Control The VariTrac damper can be used on a stand alone basis It is not required for the zone to communicate with the VariTrac CCP Under this condition the zone uses the duct temperature analog input auxiliary temperature to determine the heating or cooling control action If the zone determines that a communication failure exists or it is being used as a stand alone device it will use the auxiliary temperature and the space temperature to determine its control action If the duct temperature is greater than or equal to the zone temperature plus 10 F the control action is heat If the duct temperature is less than or equal to the zone temperature the con
7. Current Date 10 Aug 2002 Time Format AM PM Units Of Display Inch Pound English ale Set the Current Time 1 Press CurrentTime The Enter a Time screen displays 2 Enter the time Make sure to choose AM or PM You will see the time change on the left side as you enter it 3 Press OK Press Yes to verify your entry The CCP Setup Selections screen appears Set the Current Date 1 Press Current Date The Enter a Date screen displays 2 Enter the correct date using DD MMM YYYY format The date changes on the left side as you enter Note After the day of the month is entered the entry buttons change to month selections After you enter the month the screen again displays numerics where you enter the year Press OK Press Yes to verify your entry The CCP Setup Selections screen appears 76 VAV SVU01A EN TRANE VAV SVU01A EN Set the Time Format 1 Press Time Format The Set Time Format screen displays 2 Press AM PM or 24 Hour 3 Press Yes to verify your entry The CCP Setup Selections screen appears To Change the Units of Display 1 Press Units of Display The Select Units of Measure screen displays 2 Press Inch Pound English or International System SI 3 Press Yes to verify your entry The CCP Setup Selections screen appears Service and Testing The CCP Service and Testing function allows you to adjust the setup parameters of the operator display screen This includes adjusting the screen c
8. all 24 zones are assigned to Group 1 Group Occupied Unoccupied Group occupied unoccupied performs time of day scheduling for the VariTrac CCP This allows zones serving a specific area to be grouped and scheduled together Each air conditioning system controlled by a central control panel can have up to four separate time of day schedules one for each of the four groups If any group is occupied the central control panel will operate the supply fan and handle zone voting according to occupied parameters All four groups must be unoccupied for the CCP to operate using unoccupied parameters Zones that are members of occupied groups control to occupied setpoints Zones that are members of unoccupied groups control to unoccupied setpoints 20 VAV SVU01A EN TRANE VAV SVUO1A EN Timed Override If the timed override button on a zone sensor is pressed all zone members of that group become occupied The CCP operates the supply fan and handles zone voting according to occupied parameters Zones that are members of unoccupied groups but on the same CCP continue to control to unoccupied setpoints The VariTrac CCP must collect the zone timed override TOV signals from all members in a group into a TOV signal for the group A cancel signal from any group member is treated as a cancel for the group The zone that initiated the TOV signal does not need to generate the signal to cancel a group TOV If the VariTrac CCP is under Tracker Ve
9. allows a group of dampers to modulate from the maximum position to the closed position to compensate for airside diversity The CCP remains in the balance mode until the mode is manually disabled When the system exits the balance mode all functions return to normal and a system calibration is performed The VariTrac system can be placed in the balance mode from the operator display or the PC software CO Based Demand Controlled Ventilation The Varilrac CCP demand control ventilation program resets the ventilation damper position for the Voyager Reliatel unit based on the zone CO level The program has four configuration settings e CO normal level ppm Minimum ventilation damper position CO peak level ppm Maximum ventilation damper position As the zone CO level rises from the normal level to the peak level the damper position is reset linearly between the minimum damper position and the maximum damper position CO sensors may now be connected to VariTrac zone UCMs Version 4 0 or greater The zone CO concentration is communicated from the zone UCM to the CCP The program can be configured to use one zone CO sensor as its source or it can be configured to hunt through all zones with sensors attached and use the highest value If the VariTrac system is controlling a noncommunicating HVAC unit with the optional relay board the spare binary output on the relay board can be configured for CO control In this config
10. CCP begins intermittent fan operation During the unoccupied mode the fan operates only on a demand for heating or cooling This minimizes the fan operation to save energy changes the minimum number of strong callers for changeover to one During the unoccupied mode the minimum opposite strong calls for changeover goes to one so any strong caller can change the system over All other system setup parameters remain the same during the unoccupied mode disables energy saver and ventilation modes The energy saver and ventilation modes require continuous fan operation and are disabled in the unoccupied mode disables local heat capability at all zones when the fan is off During the unoccupied mode local heat is disabled at all zones when the fan in the air handler is off When the fan is energized local heat is enabled unless edited to disabled in the PC software disables the outdoor air damper with the spare binary output if the VariTrac CCP has the optional relay board Many systems require the outsideair damper to remain closed during unoccupied operation The spare binary output on the optional relay board can disable the outside air damper during the unoccupied mode VariTrac CCP Group Functions The VariTrac CCP allows four groups of zones to be controlled and monitored independently Each group can have up to 24 members Any zone can be assigned to any group but a zone can only be a member of one group at a time By default
11. Monday 26 Aug 2002 System sal CCP v4 0292 l Operator Information dre aka determines name of Titre Calibration mode is active rz this unit W View View Schedule View zone Create change comfort status view and delete and change schedules current settings After Hours Advanced After Hours Alarm Advanced Set up and cancel timed overrides of schedules View current system status and setup selections change current operating parameters View and reset Varilrac diagnostics VAV SVU01A EN TRANE VAV SVU01A EN Operation Screens Operation screens enable you to define a request to view or change data Operation screens include branch selection screens and editor screens Branch Selection Screen Branch selection screens enable you to select a branch category for creating changing viewing or deleting function data Branch selection screens do not display data and do not require that data be entered To select a branch press the corresponding button Figure 4 Example of Branch Selection Screen Touch a button to select an option Branch CCP Setup And Service selection buttons System Setup And Status Zone Setup and Status Group Setup 45 Using the Operator Display Typical data screen showing current active system data 46 TRANE Data Display Screens Data display screens enable you to view the results of a data request Figure 5 Example of Data Display Screen system Status
12. Schedule Members and the Schedule Members Editor screen displays 4 Press Remove Member and the Remove Schedule Member screen displays See Figure 19 5 Press the button for the group you want to remove The Confirmation for Removing a Member screen displays 6 Press Yes to confirm the change The Remove Schedule Member screen displays Repeat Steps 5 6 to remove additional members from the schedule Press Home to exit this procedure Figure 19 Example of Remove Schedule Member Screen Remove Schedule Member Schedule Members Page 1 of 1 VAV SVU01A EN 65 Using the Operator Display 66 TRANE View List of Daily Schedules and Check Occupancy 1 Press Schedule The Schedules screen displays the list of schedules and the current occupancy state 2 Press Home to exit this procedure View a Daily Schedule and Schedule Members 1 Press Schedule Press Member Listings The Member and Group Listings screen displays Press View Schedules andTheir Members The Schedule Membership Listing screen displays See Figure 20 4 Press Home to exit this procedure Figure 20 Example of Schedule Membership Listing Screen Schedule Membership Listing Default Schedule 1 Default Schedule 2 Default Schedule 3 Default Schedule 4 Page 1 of 1 VAV SVU01A EN TRANE View Unscheduled Members Press Schedule Press Member Listings The Member and Group Listings screen displays Press View Unsched
13. Tracker the system prevents timed override Press CancelTimed Override The Confirm Cancel Single Area Timed Override screen displays Press OK to return to the daily operator screen Acquire Detailed Area Status and Setup 1 2 Press View to display building information Press the appropriate area button to display the daily operator screen for that area Press Advanced Status and Setup The Zone Setup and Status screen displays Press the desired action to display building information Press the appropriate area button to display the appropriate setup or status screen for that area VAV SVU01A EN TRANE VAV SVU01A EN Figure 13 Alarm Screen Sequence Home Page Alarm y Current Diagnostics gt e p Update Diagnostics Reset Diagnostics 55 Using the Operator Display 56 TRANE Alarm Procedures The Alarm function allows you to view update and reset VariTrac diagnostics All diagnostic functions begin at the home screen Only active diagnostics are displayed in the list The VariTrac panel does not maintain a history of diagnostics or alarms View VariTrac Diagnostics Press Alarm The Current Diagnostics screen displays 2 Press Update Diagnostics to refresh the screen The Current Diagnostics screen updates 3 Press Reset Diagnostics The Current Diagnostics screen displays Latching diagnostics are reset such as Voyager or Reliatel
14. Type Press HVAC Unit Type to select a unit type The VariTrac system configures this parameter automatically on start up with the exception of Generic Heat Pump which must be selected manually The default unit type is Relay Board 2H2C See Figure 34 Control Mode Press Control Mode to select a manual control mode for the HVAC unit The default mode is auto which allows the system to change automatically between the heating and cooling modes This is the recommended setting for VariTrac You may manually select heat cool or off The system remains in the manually selected mode until it is manually returned to the auto mode See Figure 34 Supply AirTempering This button only appears if the HVAC unit is a Voyager or Reliatel rooftop unit Press this button to enable the Supply Air Tempering function in a Voyager via the CCP When enabled the Voyager cycles a stage of heat on and off to warm up the supply air stream and better manage the load created by increased ventilation air requirements The VariTrac system must be in the heating mode and not calling for heat When the supply air temperature falls 10 F below the supply air tempering setpoint default 70 F the Voyager turns on a stage of heat The stage turns off when the supply air temperature rises 10 F above the supply air tempering setpoint This process continues until the VariTrac system calls for heat or the system mode changes to cool The supply air tempering setpoint ca
15. Ventilation un 39 System Galibration uanuenanuega adm e de ERR ege e ee 39 Zone Occupied Standby Function eeuarnnvvvvvnnrnnnvrvennsrnnnvvveensrnssrvenereennn 39 Global Sensor Setpoint Limit Setup rurrrrnnvvvrrrvrrnnnvrrrrrrrnnnvnerssrsnnnrnneer 40 System Balance Mode kA 40 Using the Operator Display ee ENEE En 41 Overview maid aa EE et ee 41 Screen L youtuuakasksuhkkuseangeonkuneainednmdnbknedednduiie 42 Title B r Aass 42 Navigation En Te EE 42 Selection Buttons cia coat ek ania tne EE Naa TE adaa 42 Seil EE A4 Op r tion Screens ET 45 Branch Selection Screen 45 VAV SVUO1A EN TRANE VAV SVU01A EN Data Display Screens sunnier i rider 46 Data DC EE 46 Analog Data Entry Screen errrnnnvvvvvrrrnnavrvresrrnnnrvererssnnsreveesssnsnrrseesssnnner 47 Alphanumeric Data Entry Screen 48 Gelueft 49 View Pro c dure uaheaaen dekan 51 Determine Area Temperature 0 cece cee eeeeeeeeeeeteeeeeeaeaaaaaaeaaeeeeeneeeeeees 51 Determine Area Temperature Setting sccccccsssseneeeeeeesseeeeeeseeseeneeess 51 Adjust Area Temperature Setting wwwrrsrrrvrrrvrnnnrvererrrnnnrveverrrnnnrrrersvennn 52 Determine Area OCCUPANCY rvernannnvvenenrrnnnvrvennrrnssrrrvenssnnsrrvenessnsnrrvenenens 53 Acquire Detailed Area Occupancy Schedule Status ccccseseeeeeees 53 Override Area OCCUPANCY nrrnnnvvvvvvrrrnnvnnnrrrrrnnnvnrrsrrrnnnvnnessvsnnnvnnsssssrnnnnne 54 Cancel Area Override uk 54 Acquire Detailed Area Status
16. Zone Temperature Sensor The zone damper UCM compares the space temperature to the active setpoint to determine space requirements and to the supply air temperature to determine available heating or cooling It modulates the damper to provide the proper amount of heating or cooling air to meet comfort conditions The zone UCM also provides the VariTrac CCP with information about the current comfort conditions and heating or cooling requirements of the space VAV SVU01A EN TRANE VAV SVUO1A EN Chapter 6 Sequence of Operation Central Control Panel CCP Start up The VariTrac CCP executes the following sequence of events on power up 1 Reads the type of rooftop and automatically configures the panel to control the unit Calibrates the bypass control loop See Bypass Control p 12 Scans all UCMs and collects zone information Determines the system operating mode occupied or unoccupied and communicates it to all zones occupied unoccupied mode 5 Begins normal operation Bypass System Calibration Upon powerup or a change from the occupied to the unoccupied mode the bypass system goes through its calibration procedure If there are no schedules 24 hour operation in the CCP the system calibrates approximately once every seven days During calibration the system performs the following sequence 1 All zones perform a self calibration function UCM reset This calibrates the position of the damper blade and
17. air temperature is between the zone temperature and the zone temperature plus 10 F and the zone temperature is above the cooling setpoint the control action is heat e below the heating setpoint the control action is cool between the heating setpoint and the cooling setpoint the control action will remain unchanged Local Heat Control The UCM has three local heat outputs available to control duct or perimeter heat The UCM outputs are 12 VA maximum at 24 Vac wet contacts meaning voltage is provided by the UCM transformer The local heat type has five selections This selection determines the heating control algorithm used by the UCM The following tables and descriptions are with priority local heat enabled If priority local heat is disabled all values are lowered by 2 F below the heating setpoint The choices are e None No local heat is controlled Note VariTrac dampers factory configured as CHGR use this type of local heat control 1 3 stages electric Three stages of local electric heat are staged on by space demand The stages are controlled on off by the following differentials Output 1 J9 Output 2 J10 Output 3 J11 ON heating setpoint ON 1 0 F below heating setpoint ON 2 0 F below heating setpoint OFF 0 5 F above heating OFF 0 5 F below heating OFF 1 5 F below heating setpoint setpoint setpoint Note If the local heat is configured to 1 3 stages electric and
18. commanded to maximum flow If individual zone heating is required during normal daytime operation a local heat source must be provided at the box 35 Delivered VAV Operation 36 TRANE System Operating Overview Zone Count A delivered VAV system supports up to 32 zones The zones can be any type of VariTrane pressure independent VAV box including single duct boxes fan powered boxes and boxes with factory installed local heat Automatic Configuration and Start up The delivered VAV system performs automatic configuration on start up The CCP first locates the Voyager rooftop unit on the Comm4 link and automatically configures the system as a delivered VAV system The CCP then locates all the VAV boxes on the communications link and creates a database of zones complete with default names The CCP takes control of all the VAV boxes and calibrates them It then begins heating cooling operation Morning Warm Up Morning warm up is done using the zone sensor from Zone 1 A different zone can be selected using the VariTrac PC software When the system switches from unoccupied to occupied operation morning warm up is activated if the zone temperature is more than 1 5 F below the morning warm up setpoint The default morning warm up setpoint is 68 F and is editable from the PC software and the operator display During morning warm up all VAV boxes are driven to the maximum flow the air handling unit supply fan operates at 10
19. compressor lockouts VariTrac diagnostics are divided into three categories Priority 1 Table 2 p 57 Low priority diagnostics which do not have a major effect on operation and typically do not require immediate attention Priority 2 Table 3 p 58 Medium priority diagnostics which can affect system operation and usually require service Priority 3 Table 4 p 59 High priority diagnostics which place the system in priority shutdown Priority shutdown stops heating cooling and system fan operation Service is required VAV SVU01A EN TRANE Table 2 VariTrac Priority I Diagnostics 1 Comp Disable Input LPC Open 1 Comp2 Disable Input LPC Open Indicates the Voyager ReliaTel low pressure cutout control has opened due to adversely low refrigerant pressure See wiring diagram in service literature for individual units 1 Dirty Filter Defrost control Input Indicates the Voyager ReliaTel unit s air filters are dirty and need to be replaced This input is provided by an optional air pressure differential switch across the filters The defrost control input in the Voyager has failed indicating a problem with the defrost module or defrost temperature sensor Local Econ Min Pos Fail The minimum position potentiometer on the Voyager economizer board has failed Outdoor Temp Sensor Fail OA Rel Humid Fail RA Temp Sensor Fail RA Rel Humid Fail Indicates the Voyager ReliaTel is not receiving a v
20. greater than the static pressure setpoint the bypass damper is driven towards the open position The bypass damper remains stationary if the static pressure is in the deadband The deadband is the area between the static pressure setpoint and the static pressure setpoint minus 10 percent The bypass damper can be repositioned up to four times per minute When the bypass damper is repositioned open it moves 8 percent each time When the bypass damper is repositioned closed it moves 5 percent each time If the static sensor fails the bypass damper is driven to the fail safe position of 50 percent and the system continues to operate When the zone is unoccupied the bypass damper is driven to 50 percent Heat Cool Mode Decision for Zones The heat cool control mode for the individual zones is determined by the zone damper UCM The central control panel sends the current supply air temperature to all the zone UCMs approximately once every 15 seconds The zone UCM compares the supply air temperature of the system to the individual zone temperature and the zone setpoint If the supply air temperature is e less than or equal to the zone temperature the control action is cool e greater than or equal to the zone temperature plus 10 F the control action is heat If the supply air temperature is between the zone temperature and zone temperature plus 10 F and the zone temperature is e above the cooling setpoint the control action is h
21. in optional relay board with easy to wire terminal strip Communicating sensor assembly including a UCM 4 with integral temperature and pressure sensor and output to the bypass damper s Bypass damper with factory installed wiring harness for plug in connection to the communicating sensor assembly Zone dampers with UCM 4 boards and Zone occupancy sensor input Zone carbon dioxide CO sensor input New rectangular zone dampers sizes given in inches 8x12 8x14 8x16 10x16 10x20 14x18 Same Comm4 communications to the zone dampers for reliable operation and backward compatibility Supports Comm5 communications to the new Tracker Version 10 panel Optional touch screen operator display with built in 7 day time clock Windows based PC software program for system interface Digital display zone temperature sensor Pressure independent box capability Local heat capability Feature Summary TRANE Functional Enhancements Increased Zone Count The new VariTrac system now supports 24 zones instead of 16 The zones may be VariTrac dampers or any type of VariTrane VAV box including fan powered boxes or boxes with factory installed local heat Discharge Air Control VariTrac now does discharge air control When there is demand for heating or cooling from a zone the CCP controls the discharge air temperature to the discharge air setpoint default 55 F cooling 110 F heating using as many stages a
22. is displayed A warning screen displays a caution of proper use of the test mode Press Yes to continue A test mode enabled disabled screen will appear Press Disabled to continue Press Yes on the verification screen to continue The Test and Diagnostics Selections screen displays 5 Press Home to exit this procedure 82 VAV SVU01A EN TRANE System Setup and Status The System Setup and Status section of Advanced functions allows you to perform in depth setup and monitoring of the VariTrac system and associated HVAC units There are two parts to this section e System Setup e System Status System Setup To access System Setup from the VariTrac home screen 1 2 3 4 Press Advanced Press System Setup and Status Press System Setup The first System Setup screen appears See Figure 34 System Setup consists of four screens Navigate through the screens using the Up or Down arrows Figure 34 Example of System Setup Screen page 1 VAV SVU01A EN system Setup Select an item to change current value System Name Sales Department Unit HVAC Unit Type Voyager Control Mode Auto Supply Air Tempering Disabled Page 1 of 4 ale amp Te 83 Advanced Functions 84 TRANE System Name Press System Name to enter a description name for the VariTrac CCR The name can contain a maximum of 24 characters including spaces The default name is VariTrac CCP See Figure 34 HVAC Unit
23. position Figure 39 Example of System Balancing Group Status Screen System Balancing Group Status Select a group to change status Group 1 Enabled Group 2 Enabled Group 3 Enabled Group 4 Enabled VAV SVU01A EN TRANE VAV SVU01A EN Disabling the System Balance Mode Press Advanced Press System Setup and Status Press System Setup Press the Last page arrow button double arrow Press System Balance Mode The System Balance Setup screen displays Press Disable System Balance Mode Press Disabled on o o FF W DN Press Yes to verify your entry The System Balance Setup screen displays Notice that the button text has changed to Enable System Balance Mode indicating that the balance mode has been disabled This also automatically releases any overridden groups back to their auto flow function Changing Limits Globally If the zone sensor setpoint thumbwheel attached to a zone UCM is enabled the thumbwheel becomes the active occupied setpoint The setpoint thumbwheel can be set anywhere from 50 F to 95 F Reduce this range to 6 F or less during system commissioning The VariTrac CCP allows you to create a single set of limits for the zone sensor setpoint thumbwheels and broadcast them to all the zones on the system at one time 1 Press the Changing Limits Globally button The Global Setpoint Limits screen appears See Figure 40 2 Press each setpoint and enter the desired value Figure
24. this procedure Cancel a Single Area Timed Override Press After Hours The Schedule Override Selections screen displays Press Override a Single Area The Building Information Override Areas screen displays Press the button for the area that you want to override The Override Selections Single Area screen displays Press Cancel Timed Override The Confirm Cancel Single Area Timed Override screen displays Press OK The Building Information Override Areas screen displays To cancel additional overrides repeat Steps 3 5 Press Home to exit this procedure VAV SVU01A EN TRANE VAV SVU01A EN Cancel Timed Override of a Single Schedule Press After Hours The Schedule Override Selections screen displays Press Override a Single Schedule The Building Information Override Schedule screen displays Press the button for the schedule that you want to override The Override Selections Single Schedule screen displays Press the Cancel Timed Override button The Confirm Cancel Timed Override screen displays Press OK The Building Information Override Schedule screen displays To cancel additional overrides repeat Steps 3 5 Press Home to exit this procedure Cancel Timed Override of All Schedules Press After Hours The Schedule Override Selections screen displays Press Override All Schedules and Associated Areas The Override Selections All Schedules screen displays Press Cancel Timed Override The Co
25. to in this publication
26. viewed screen They also enable you to go directly to the first or last page of the current screen and to scroll through the pages of the current screen Selection Buttons A screen may display selection buttons between the title bar and the navigation buttons The selection buttons e enable you to further define a request to view or change data e display current settings or data and enable you to select a specific item view or change VAV SVU01A EN TRANE Home Return to Home Screen VAV SVU01A EN Figure 2 Example of Title Bar Selection and Navigation Buttons Title bar Touch a button to change a setup value Unoccupied Cooling Setpoint 85 0 F 75 0 F Selection buttons Occupied Heating Setpoint 71 0 F Unoccupied Heating Setpoint 60 0 F Page 2 of 5 Navigation buttons Back First Last Up Down Return to Jump to Jump to Scroll Scroll previous first page last page up one down one selection of current of current page page screen selection selection 43 TRANE Using the Operator Display 44 Home Screen All VariTrac operating procedures begin at the Home screen Function buttons enable you to select the View Alarm Schedule After Hours and Advanced functions To select a function press the corresponding button Figure 3 Example of Home Screen Layout Current Current VariTrac model Current Time Day and software Date version 12 56 PM
27. 0 percent the economizer is held closed and heat is cycled on When the zone temperature meets or exceeds the morning warm up setpoint the system switches to the cooling mode Morning warm up defaults to enabled and can be disabled through the operator display or PC software Supply Air Temperature Control The microcontrols in the Voyager rooftop unit are used to control the supply air temperature The supply air setpoint can be adjusted through the operator display or PC software If outdoor air conditions are acceptable the economizer controls are utilized for cooling If outdoor conditions are unacceptable mechanical cooling cycles as if the unit has no economizer VAV SVU01A EN TRANE Supply Air Setpoint Reset The supply air temperature setpoint can be reset based on zone temperature return air temperature or outdoor air temperature The reset type can be selected and enabled and the operating parameters can be set through the operator display or PC software During setup a reset setpoint and reset amount are provided by the operator Reset from zone air If the zone air temperature falls below the reset setpoint supply air setpoint reset begins As the zone air temperature falls below the reset setpoint by 3 F fixed the supply air temperature increases by the reset amount entered by the operator 5 F default Reset from return air H the return air temperature falls below the reset setpoint supply air setpoint rese
28. 2 Configuring the External Modem snvvrrrersnnnvnvrrrrrnnnvnnersrnrnsvnnssssvsnnnenne 32 Connecting the Modem to the VariTrac CCP NN 32 Modem Operation wis scciicssavetechiessavecediccetiisccuedtvalaccureivelasvececstedvviececstetes 33 V riTrac CCP Intertace nianna a a sedans 33 CCP Operator Display scese daenna era ae e ea e a 33 Vari Trac PC Software ea a aaa aa Ea aa E a teens 33 Tracker Version 10 Panel rrrnnnvnnnnnnnnnnnvnnnnnnnnnnvnnnnnnnannnnnnnnnnnnnnennnnnnennne 33 iii Table of Contents Delivered VAV Operation ee ENNEN ENEE En 35 What Delivered VAV S nnnnnnrnnrrrnnnnnennnrrnnnnnnnnenervnnnnnnenervnnnnnnnnnennnnnnnnnneennn 35 What Delivered VAV IS Not 35 System Operating Overview mnnsrrrrarvrnnnvvrrrrrrrnnnvnnrrsrvennnvesssevennnenessssssnnnenene 36 ZONE LL EE 36 Automatic Configuration and Start Up rrvrerrrrnnvrrvvrrnrnavrvererrnnsrrrererennn 36 Morning Warm Up ani susenetnbse defekt aae aa aaa aaa aiaia 36 Supply Air Temperature Control 36 Supply Air Setpoint Heset 37 DaytimeWarm UWp mundi innb teas eects cya ted ee dele ad 37 Unoccupied Control 242i a SNE EE Ree dude 37 Supply Air Pressure Control 38 Supply Air Pressure Limiting arrvvennrnnnvrvevernrnnvvrerernrnnsrrreessrnnsrrreesssnnnner 38 Fan Pressure Optimization eeraarnnvrvvvennrnnnrrvvnnnrnnvrnnennrssnnnnnnvnnssnnsnnneneeee 38 Power Exhaust Control ssnin eiir ENKER NEE vandt 38 CO Based Demand Controlled
29. 263 25 pin modem adapter plug The modem should be powered down when making connections to the CCP Plug one end of the RJ12 cable into the central control panel PC port RJ 12 style socket located on the bottom of the CCP 4 Plug the other end of the RJ12 cable into the 25 pin modem adapter and attach the adapter to the 25 pin socket on the back of the modem 5 The modem should be powered with the separate power supply transformer shipped with the modem See the VariTrac CCP Installation Guide for addi tional modem cabling and connection information VAV SVUO1A EN TRANE VAV SVUO1A EN Modem Operation Power the modem on The modem is now ready for use with the VariTrac CCP Remote connection to the modem is done using the VariTrac PC software and selecting the remote connect option The software provides a setup screen to select the comm port for your PC modem the site name and the site phone number Once you are remotely connected to the site the PC software functions the same as if you were directly connected to the panel on site VariTrac CCP Interface The VariTrac central control panel offers three methods for an operator to interface with the panel CCP operator display e VariTrac PC software Tracker Version 10 panel CCP Operator Display The optional operator display is a back lit liquid crystal display with touch screen programming capability Through the display you can access system status a
30. 41 displays suggested settings Figure 40 Example of Global Setpoint Limits Screen Global Setpoint Limits Touch a button to change a setup value Cooling High Limit 102 0 F Heating High Limit 100 0 F Cooling Low Limit 45 0 F Heating Low Limit 43 0 F SECH 89 TRANE Figure 41 Example of Global Setpoint Limits Screen with Suggested Settings Advanced Functions Global Setpoint Limits Touch a button to change a setup value Cooling High Limit 78 0 F Heating High Limit 75 0 F Cooling Low Limit 70 0 F Heating Low Limit 67 0 F ale When you have completed editing the setpoint limits press Back When you exit the Global Setpoint Limits screen the limits broadcast automatically to all the VAV UCMs on the communications link Calibrate Now The system calibration function calibrates the VAV UCMs and determines the static pressure operating setpoint for the system See Bypass Calibration p 11 The Calibrate Now button manually forces the system to go through the calibration sequence 1 Press Calibrate Now 2 Press No if you wish to cancel your selection 3 Press Yes to verify your selection The CCP returns to the home screen and begins the calibration sequence 90 VAV SVU01A EN TRANE VAV SVU01A EN System Status There are five system status screens Navigate from screen to screen using the Up and Down arrows To access system status from the home screen
31. 98 Occupied Cooling Setpoint ccccecccccesssseeeeeessenteeeeeessnnaeeeeeessenaes 98 Occupied Heating Setpoint ssssssssssesnssssssrnsssrtennnsssttnnnnsstnnn rnense nnn 98 Unoccupied Heating Setpoint rverasnnvnvvvnnrrnnrnvenerrrnnrnnerersrsnrnneneene 98 Zone Sensor Setpoint Limite 99 Cooling High Bo EE 99 Heating High Limit ENNEN ENNEN 99 Cooling Low Bu UE 99 Heating Low Limit NNN EEN 99 Airflow Maximum Position EE 100 Airflow Cooling Minimum Position eeraannnvrvvvnnrnnnvrreversnnvrrveeernnn 100 Airflow Heating Minimum Position reervannnvrrvennrnnnrrrvnersnssrrvenernnn 100 Local Heat Minimum Position UCM 4 0 and later nn 100 Occupancy Sensor Setup UCM 4 0 and later arvrrvrvnrensrnnnnrn 101 Aux Sensor Set To UCM 4 0 and later E 101 TEE 102 Group Setup E 104 Group Name tegt t Ea E E a ra g ie ere 105 Vent Mode ape Nene pe 105 Flow Overrides usanne one aa teases 105 Energy Saver Mode rnnnnvnrrerrrrnnvnnesrerrnnnvnnsssssnnnvnnssssssnnnvnssssssnnnnnnne 105 View or Edit Current Group Members 105 vii Table of Contents viii VAV SVUO1A EN TRANE VAV SVU01A EN Chapter 1 About This Guide This manual describes the steps required to properly set up and operate VariTrac changeoverbypass variable air volume VAV systems delivered VAV systems and the VariTrac central control panel CCP The information in this guide includes VariTrac History A brief overview of the VariTrac produc
32. A reset occurs in the UCM after every power failure The UCM also initiates a reset automatically whenever air valve timing watervalve timing or unit size is edited The calibration process can take as long as 11 minutes depending on the edited drive time After a power failure the reset starts are delayed by 20 minutes This is to prevent reset calibration of the UCM from interfering with the calibration of the bypass dampers and static pressure sensor The UCM also has a reset initiated automatically by the VariTrac CCP every day during the system calibration process This process occurs when the system transitions from the occupied to unoccupied mode If the CCP has no schedules 24 hour operation the system will calibrate approximately once every seven days See Bypass System Calibration p 11 23 Sequence of Operation 24 TRANE Setpoints Each zone UCM has the following setpoints Occupied cooling setpoint This is the active cooling setpoint when the zone is in the occupied mode and the zone sensor setpoint is disabled Occupied heating setpoint This is the active heating setpoint when the zone is occupied and the zone sensor setpoint is disabled Note If the setpoint thumbwheel on the zone sensor is enabled the thumbwheel determines the active occupied setpoint subject to limits see below The setpoint at the thumbwheel is the active occupied cooling setpoint The active occupied heating setpoint defau
33. CM e Control mode This parameter tells the zone to operate in the occupied or the unoccupied mode as dictated by the VariTrac CCP binary input or CCP group command Control action This parameter defines whether the control action of the zone damper will be heating or cooling i e if there is warm or cold air in the supply duct Position control This parameter is a damper air valve override per one of the following Auto the zone operates to satisfy zone temperature Drive to minimum position Drive to maximum position Drive to open position Drive to closed position Damper Control The zone continuously monitors the zone temperature the damper position and the zone setpoints With this information it uses a PI proportional plus integral control loop to maintain the heating and cooling setpoints 25 Sequence of Operation 26 TRANE Heat Cool Mode Decision for Zones The heat cool control mode for the individual zones is determined by the zone damper UCM The CCP sends the current supply air temperature to all zone UCMs approximately once every 15 seconds The zone UCM compares the supply air temperature of the system to the individual zone temperature and zone setpoint If the supply air temperature is e less than or equal to the zone temperature the control action is cool greater than or equal to the zone temperature plus 10 F the control action is heat If the supply
34. Contrast Screen Brightness and Contrast Press to adjust brightness Press to adjust contrast mammae 1 11 78 VAV SVUO1A EN TRANE VAV SVU01A EN Calibrate Touch Screen To calibrate the accuracy of the touch screen buttons 1 Press Calibrate Touch Screen 2 The touch screen calibration function displays 3 The screen instructs you to press the calibration target in the upper left hand corner of the screen Press until the beeping stops about 10 beeps 4 The screen then instructs you to press the calibration target in the lower right hand corner of the screen Press until the beeping stops about 10 beeps You will automatically be returned to the Operator Display Parameters screen When you have adjusted the display to your satisfaction press Home to exit this procedure Figure 30 Example of Calibrating the Touch Screen P Using a pencil eraser touch the target Hold until the beeping stops 79 Advanced Functions 80 TRANE CCP Hardware and Software Functions To access CCP Service and Testing from the home screen 1 Press Advanced 2 Press CCP Setup and Service 3 Press Service and Testing The Service and Test Selections screen displays See Figure 31 4 Press CCP Hardware and Software The Hardware and Software Tests screen displays See Figure 32 Figure 31 Example of Service and Test Selection Screen Service And Test Selections Select an option for a det
35. Copying a Timetable screen displays Press Yes to confirm the action The Start and Stop Time Editor screen displays Press Home to exit this procedure Figure 17 Example of Enter a Time Screen Enter a Time value is 12 00 4M Change to 00 00 AM 5 Cancel nore er 63 TRANE Using the Operator Display Add Member to Daily Schedule Press Schedule 2 Press the button for the schedule you want to change The Schedule Specific Editor screen displays The name of the selected schedule is in the Schedule Name field 3 Press Schedule Members The Schedule Members Editor screen displays Press Add Member The Groups Available for Membership screen displays See Figure 18 5 Press the button for the group you want to add The Confirmation for Adding a Member screen displays 6 Press Yes to confirm the change The Groups Available for Membership screen displays 7 Repeat Steps 5 6 to add additional members to the schedule 8 Press Home to exit this procedure Figure 18 Example of Groups Available for Membership Screen Groups Available for Membership Unscheduled Group s Group 2 Group 3 Group 4 Page 1 of 1 64 VAV SVU01A EN TRANE Remove Member from Daily Schedule Press Schedule 2 Press the button for the schedule that you want to change The Schedule Specific Editor screen displays with the name of the selected schedule in the Schedule Name field 3 Press
36. EE EEEE A EAEN E 10 Zone Damper with a UCM and Zone Temperature Gensor 10 Table of Contents Sequence of Operation ee ENNEN En 11 Gentral Control Panel orisirisii aaa dh tied ean 11 CEP SOUD EE EE 11 Bypass System Calibration wwwarsrrrvvnnnrnnnvrvvennrnnnrrvenersnsnrrrenenssnsnrvenenens 11 Static Pressure BY PASS tege eege EEN dee ERNEST 12 Heat Cool Mode Decision for Zones AE 12 Zone Voting for System Heat or Cool srrrenersnnnvrvererrnnsvrveversnnnrrveversnnner 13 UCM Zone Tagging for No Vote rsrrrevenannnvvrvnennrnsrrrenerssnssvrreesssvssrrrenerens 13 Zone Heat Cool Call Strength 14 Heat Cool Decision for the CC 14 Heat Cool Changeover for the CC 15 Heat Cool Changeover from Opposite Strong Callers sassssssssssseeaaa 15 Heat Cool Staging and Discharge Air Control 15 Morning Warm Up Precool Mode AEN 16 Manual Heat Cool Mode Control AAA 16 Priority Shutdownuussanutnsstsnnsnikbedk ENEE Eet E 17 Voyager Reliatel Rooftop Operation versus Binary Output Control 17 2 Heat 2 Cool versus Heat Pump Operation 18 Spare Binary Output Control 18 Auxiliary Heat Lockout si eist dee de ini ee ee sikket 18 Occupied Priority Local Heat ssssssssssssssnnnssssrnnnnsssnnnnnssrtnnnnnnsrnnnnnnnnne 18 Unoccupied Priority Local Heart 19 Unoccupied Control iuavmisuturisn dd ets Wee eee 19 VariTrac CCP Group Functions srrrvvennannavrrernnrnnnrrrenensnssnvvenenssnssrrvenenenne 20 Group Occupied Unoccupied r
37. RANE Zone Status To go to Zone Status from the VariTrac home screen 1 Press Advanced 2 Press Zone Setup and Status 3 Press Zone Status The Building Information Zone Status screen appears See Figure 53 4 Select a zone by pressing a button from the zone list You may need to use the Up or Down arrow to view all available zones Figure 53 Example of Zone Status Screen page 1 Zone Status Zone 2 Sharon s Office Member of group 1 Group 1 Software rev 40 Unit type varitrac Round Zone temperature 76 3 F Active setpoint 74 0 F Control mode Occupied Control action Cool Flow override Auto Page 1 of 2 F 7 Zone number and name The zone number based on the UCM address and the current edited name of the VariTrac zone Member of group x Indicates the group to which this VariTrac zone belongs Software rev Indicates the version of the VAV UCM Unit type Indicates the type of VAV unit the UCM is configured to control Zone temperature Indicates the current zone temperature as reported by the zone sensor Active setpoint The setpoint to which the zone is currently controlling Control mode Indicates whether the zone is currently occupied or unoccupied Control action Indicates whether the current zone control action is heat or cool Flow override Indicates the zone presently running in auto control mode or if the flow has been manually overridden VAV SVUO1A EN TRANE Figure 54 Example of Z
38. ailed service or test Operator Display Parameters CCP Hardware and Software Figure 32 Example of Selecting Hardware and Software Tests Screen Hardware nd Software Tests Touch a button to select desired option Display CCP 1 0 Status Memory and Processor Tasks Invoke CCP Diagnostics VAV SVU01A EN TRANE VAV SVU01A EN Display CCP I O Status This screen displays the status of the Priority Shutdown and External Time Clock Inputs located on the CCP subbase It also displays the status of the spare relay output on the optional relay board 1 Press Display CCP I O Status to view UO status The CCP I O Status screens displays View input output status of the CCP Press the Back arrow The Hardware and Software Tests screen displays Memory and Processor Tasks Rebooting the System Rebooting the system allows you to restart the CCP which is similar to cycling power to the panel 1 Press Reboot the CCP The confirmation screen displays 2 Press Yes The CCP panel reboots and the system recalibrates View Processor and RAM Usage status only Viewing processor and RAM usage is used primarily for development purposes and is typically not utilized during field setup or service Invoke CCP Diagnostics Test Mode The CCP test mode allows you to manually override the CCP relay outputs and the bypass damper for service purposes To enter test mode from the home screen 1 Press Advanced The Setup an
39. alid value from the sensor Likely causes are faulty sensor connections faulty wiring or sensor failure SA Temp Sensor Fail Note See 3 SA Temp Sensor Fail in the Priority 3 Diagnostics table Indicates the Voyager is not receiving a valid value from the supply air temp sensor Likely causes are poor wiring connection faulty sensor wiring or sensor failure 1 Zone Temp Sensor Fail 1 HW Zone Cooling Setpoint 1 HW Zone Heating Setpoint Indicates the Voyager ReliaTel is not receiving valid input from the zone temperature sensor These diagnostics will not typically be seen on the CCP because a zone sensor is not generally applied to the RTU when it is connected to a CCP If they appear the likely cause is a loose wiring connection in the RTU or a zone sensor has been applied on the unit and there is faulty wiring between the sensor and the RTU or the sensor is defective VAV xx Global Zone Sens Fail The zone temp sensor for VAV zone xx has failed VAV xx Hdwire Zone Sens Fail VAV xx Global Stat Sens Fail The zone temp sensor wired to VAV zone xx has failed Likely causes are faulty sensor connections faulty wiring or sensor failure The zone sensor local setpoint for VAV zone xx has failed VAV xx Setpoint Fail The zone sensor setpoint wired to VAV zone xx has failed Likely causes are Use Local Setpoint has been enabled where no local setpoint exists faulty sensor connections faulty wiring
40. also does a zero flow pressure transducer calibration in VariTrane VAV boxes 2 When zone calibration is complete all zone dampers modulate to their maximum open position 3 The bypass damper modulates closed the zero static pressure reading is taken with the fan off 4 The system fan turns on After 45 seconds the reference static pressure reading is taken and stored 5 The bypass damper then modulates to 50 percent and the zones are re leased from their maximum position Note The calibration procedure can be manually started by pushing the Calibrate Now button available on the operator display or via PC software Note During the transition from the occupied to unoccupied mode the CCP checks to see if calibration has been performed for any reason during the last 23 hours If calibration has already occurred the previously stored values are used Sequence of Operation 12 TRANE Static Pressure Bypass The VariTrac CCP controls the bypass damper s using measured duct static pressure The central control panel compares the measured static pressure to the setpoint This setpoint is determined by taking the reference static determined during calibration and multiplying it by the static pressure setpoint multiplier percent edited in CCP Setup If the measured static is ower than the static pressure setpoint minus 10 percent the bypass damper is driven towards the closed position If the measured static pressure is
41. and Setup rwrrrnnrrrvvrrrnnnrrrererrnnnrrrererennnr 53 Alarm Procedures orisa accede heen dea ee ea NR ae 54 View VariTrac Diagnostics EEN 54 Schedule Procedures EEN 61 Change Daily Schedule Name 61 Change Daily Schedule Start and StopTimes rrrrerrsnnnvrvvrrnrnnnvrveerrrnnner 62 Add Member to Daily Schedule rerrrsnnnvvvnnnnrnnnvrversnrnnnvrversvennnrrressssnnner 64 Remove Member from Daily Schedule ssssssssssssssssnnnsssssnnnsssennnnsssernn nnen 65 View List of Daily Schedules and Check Occupancy srrvrvrrrnnnrrrvervrnnnr 66 View a Daily Schedule and Schedule Members 66 View Unscheduled Members nk 67 After Hours Procedures AEN 69 Start or Restart an Area Timed Override EE 69 Start or Restart Timed Override of a Single Schedule An 72 Start or Restart AllTimed Override Schedules A 72 Cancel a Single Area Timed Override rrvrannrnnnvrnnnvrrnnvnnvrsvrrnnvrnersernnnennne 72 Cancel Timed Override of a Single Schedule rrrrrurrnnnvvnvannrnnnvrrrrvvrnnenne 73 Cancel Timed Override of All Schedules EE 73 Table of Contents Advanced Functions ee ENEE ENEE ENKEN 75 CCP Setup and Services un nudrukemde Ea dekret EAR 75 COP SetuP EE 75 Set the Current Time ENEE 76 Set the Current Date ENNEN 76 Set the Time Format 77 To Change the Units of Display rrsrrrvvrnnrnavrrvvennrnnnveversrnssrrvererennn 77 Service and Testing aaaruegprunuegndaandnufusdnnateednnddnihnid 77 Operator Display Parameters ccccccsssssseeeee
42. are no voting VAV UCMs on the link Likely cause is the comm link is down or all communicating VAV UCMs have been edited to no vote 3 No OD w Delivered VAV The CCP has auto configured as a Delivered VAV system communicating with a Voyager Commercial 27 to 50 ton VAV RTU and there is no operator display on the CCP An operator display on the CCP is required for delivered VAV 3 SA Temp Sensor Fail Diagnostic applies to Voyager Commercial VAV units only The Voyager unit is not receiving a valid input from the supply air temperature sensor mounted in the Voyager unit This failure will force the CCP into priority shutdown VAV SVU01A EN 59 TRANE Using the Operator Display Figure 14 Schedule Screen Sequence Schedule p gt Timetables p gt Ist Start Time Schedule Timetable Editor PB 1st Stop Time Schedule Names Start and Stop Time Editor Schedule Specific Editor p gt 2nd Start Time p gt 2ndStopTime Du d Home Page Copy timetables to Schedule d Monday Friday p gt Add Member p gt Schedule Members p gt Remove Member Schedule Name View Schedules amp Their Members p gt Member Listings gt View Unscheduled Groups y TRANE VAV SVU01A EN Schedule Procedures The Schedule function allows you to name change and view VariTrac schedules All schedule functions begin at the VariTrac Home screen The schedule procedure co
43. atest demand is between 85 percent and 94 percent of maximum flow This zone is determined automatically by the delivered VAV system CCP The fan remains at this volume as long as the VAV damper position remains between 85 percent and 94 percent If the VAV closes below 85 percent the fan resets to a lower volume If the zone opens above 95 percent of maximum flow the fan volume is reset upward Fan pressure optimization can be enabled from the operator display or PC software Power Exhaust Control The unit mounted power exhaust fan starts when the supply fan is on and the position of the outdoor air dampers meets or exceeds the exhaust fan setpoint The exhaust fan setpoint defaults to 25 percent and is set from the operator display or PC software VAV SVU01A EN TRANE VAV SVU01A EN CO Based Demand Controlled Ventilation The demand controlled ventilation program resets the ventilation damper position for the Voyager unit based on the zone CO level The program has four configuration settings e CO normal level ppm Minimum ventilation damper position CO peak level ppm e Maximum ventilation damper position As the zone CO level rises from the normal level to the peak level the damper position is reset linearly between the minimum damper position and the maximum damper position CO sensors can now be connected to VariTrane zone UCMs Version 4 0 or greater The zone CO concentration is communicated from t
44. closing the bypass damper and opening all zone dampers to their maximum position See Figure 37 1 Press Enable System Balance Mode 2 Press Enabled 3 Press Yes to verify your entry The System Balance Setup screen displays See Figure 38 Figure 37 Example of System Setup Screen page 4 System Setup Touch an area for detailed status System Balance Mode Disabled Changing Limits Globally Calibrate Now Page 4 of 4 Lae as Le Figure 38 Example of Setting Up System Balance Setup Screen System Balance Setup Touch a button for desired option Disable System Balance Mode Adjust Groups for Balance Mode 87 Advanced Functions 88 TRANE Notice that the button text has changed to Disable System Balance Mode indicating that the balance mode is currently enabled The system remains in the balance mode until manually disabled Adjust Groups for Balance Mode Balance mode allows you to close groups of dampers This shuts off a portion of the ductwork to compensate for airside diversity 1 Press Adjust Groups for Balance Mode The System Balancing Group Status screen displays See Figure 39 2 When a group button is pressed the button changes from enabled to disabled Select the groups you wish to disable close Press OK The System Balance Setup screen reappears All the dampers assigned to the selected groups are driven from the maximum position to the closed
45. d Status Selections screen displays 2 Press CCP Setup and Service The CCP Setup and Service screen displays 3 Press Service and Testing The Service and Test Selections screen displays 4 Press CCP Hardware and Software The Hardware And Software Tests screen displays 5 Press Invoke CCP Diagnostics The Test and Diagnostics Selections screen displays See Figure 33 6 Press Test Mode Disabled The current status of the test mode is displayed A warning screen displays to caution you about proper use of test mode Press Yes to continue A test mode enable disable screen displays Press Enable to continue Press Yes to the verification screen to continue The Test and Diagnostics Selections screen displays 81 TRANE Figure 33 Example of Test and Diagnostics Selection Screen Advanced Functions Test And Diagnostic Selections Touch a button to toggle relay s state Relay 1 Off Relay 4 Off Relay 2 Off Relay 5 Off Relay 3 Off Relay 6 Off Bypass Damper 50 96 Test Mode Enabled The buttons on the screen allow you to turn the six relays on the optional relay board on and off to verify operation The bypass damper button will allow you to enter a position value between 0 percent and 100 percent to verify damper operation Terminate Test Mode When finished using the test mode function the mode must be properly terminated 1 Press Test Mode Enabled The current status of the test mode
46. e During the unoccupied mode all groups unoccupied the minimum opposite calls to changeover automatically changes to one 1 so any opposite strong caller can initiate a mode change Heat Cool Staging and Discharge Air Control If all zones are satisfied the CCP operates the HVAC unit in the fan only mode With a call for heating or cooling from one of the zones the CCP activates stages of heating or cooling to satisfy the requirement See Zone Heat Cool Call Strength and Heat Cool Decision for the CCP p 14 The VariTrac CCP controls supply air temperature using a discharge air control algorithm The CCP controls to separate cooling 55 F default and heating 110 F default discharge air setpoints The control algorithm is both deviation and time based During operation the CCP monitors not only the supply air temperature deviation from setpoint but also how quickly deviation occurs when a stage is turned off and how quickly deviation is recovered when a stage is turned on This allows the CCP to adjust the number of stages required and the stage cycle rate for the most consistent supply air temperature control The control algorithm always meets the minimum on and off time requirements when adjusting stages TRANE Sequence of Operation Table 1 Minimum On and Off Times in minutes 2 Heat 2 Cool Heat Pump Binary Output Min On Min Off Binary Output Min On Min Off Cool 1 3 min 3 min Stage 1 3 mi
47. e product families Voyager Commercial 27 to 50 ton VAV packaged rooftop unit e Up to 32 VariTrane VAV boxes with DDC controls e VariTrac central control panel with operator display Delivered VAV only applies to this combination of Trane products The heart of the delivered VAV system is the VariTrac CCP which must include the operator display The CCP acts as the communications hub of the system It is responsible for coordinating the actions of both the VAV rooftop unit and the VAV boxes to meet zone comfort requirements The Voyager rooftop unit must be a VAV model with factory installed inlet guide vanes or variable frequency drive microprocessor controls and Trane communi cations interface Delivered VAV supports up to 32 VariTrane pressure independent VAV boxes with the DDC controls They can be single duct boxes or fan powered boxes and can have factory installed local heat if desired What Delivered VAV Is Not Delivered VAV is not changeover bypass VAV Delivered VAV is a true pressure independent VAV system Although the VariTrac CCP is used as the heart of the system it is not a VariTrac system There is no bypass damper in a delivered VAV system As in any VAV application the supply fan in the Voyager rooftop unit runs at full constant volume whenever it goes into the heating mode For this reason unit heat is only used for morning warm up and daytime warm up modes In both of these modes the VAV boxes are
48. e Figure 26 Press OK The Building Information Override Areas screen displays To override additional areas repeat Steps 3 5 Press Home to exit this procedure Figure 26 Example of Confirm Single Area Timed Override Screen Confirm Single Area Timed Override Press OK to temporarily override Zone 01 and any associated areas for 2 00 hours Press No to return to the previous screen 71 Using the Operator Display 72 TRANE Start or Restart Timed Override of a Single Schedule Press After Hours The Schedule Override Selections screen displays Press Override a Single Schedule The Building Information Override Areas screen displays Press the button for the schedule you want to override The Override Selections Single Schedule screen displays Press Start or Restart Timed Override The Confirm Single Schedule Timed Override screen displays Press OK The Building Information Override Areas screen displays To override additional schedules repeat Steps 3 5 Press Home to exit this procedure Start or Restart All Timed Override Schedules 5 Press After Hours The Schedule Override Selections screen displays Press Override All Schedules and Associated Areas The Override Selections All Schedules screen displays Press Start or Restart Timed Override The Confirm All Schedules Timed Override screen displays Press OK The Schedule Override Selections screen displays Press Home to exit
49. e how the relay is controlled e Ventilation The spare output controls the outdoor air damper control The output is energized when the CCP all groups is unoccupied When the first group becomes occupied the CCP enters the morning warm up precool mode and the spare output remains energized The mode terminates when half of the occupied voting zones are satisfied or become opposite callers Morning warm up also terminates after two hours or if the system s heat cool mode changes over The spare output is de energized when morning warm up terminates e H C The spare output is energized when the CCP is in cooling and de energized when it Is in heating e ICS The state of the relay is controlled by an upperlevel system such as Tracker or Tracer currently not supported e CO The relay is controlled by the CCP demand controlled ventilation program and energizes when the CO alarm point is reached This relay function can be used to reset the position of a ventilation damper on a noncommunicating HVAC unit based on the zone CO level Auxiliary Heat Lockout Auxiliary heat on heat pump units can be disabled via PC software When disabled any stages of auxiliary heat are turned off minimum on times are enforced Occupied Priority Local Heat Occupied priority local heat is controlled via a PC software entry If occupied priority local heat is enabled each zone controls the local heat to the heating setpoint for that zone during th
50. e occupied mode In this mode the zone heats to setpoint with local heat first The zone becomes a heat caller if the space tem perature falls more than 2 F below the zone heating setpoint If occupied priority local heat is disabled each zone controls the local heat to the heating setpoint minus 2 F for that zone during the occupied mode In this mode the zone becomes a heat caller when the space temperature falls more than 1 F below the zone heating setpoint If the space temperature falls to more than 2 F below the zone heating setpoint the zone heats to setpoint with local heat VAV SVU01A EN TRANE VAV SVUO1A EN Unoccupied Priority Local Heat Unoccupied priority local heat allows the operator to select a different local heat function during the unoccupied mode Although priority local heat control may be desirable for better comfort control during the occupied mode it may be desirable for the HVAC unit to have heating priority to save energy when comfort is not as critical during the unoccupied mode Unoccupied priority local heat is controlled via an entry in the PC software If unoccupied priority local heat is enabled during the unoccupied mode each zone controls the local heat to the unoccupied heating setpoint for that zone In this mode the zone heats to setpoint with local heat first If the space temperature falls more than 2 F below the unoccupied zone heating setpoint it becomes a heat caller Only fan powe
51. e seven day time clock built into the CCP operator display or from Tracker Version 10 When the system switches from occupied to unoccupied operation the unit operates as a constant volume unit On a call for heat or cool all VAV boxes are driven to the maximum flow and the airhandling unit supply fan operates at 100 percent The unoccupied setpoints programmed into the Zone 1 UCM are used for unoccupied control VAV SVU01A EN 37 Delivered VAV Operation 38 TRANE Supply Air Pressure Control The factory installed controls in the Voyager rooftop unit are used for supply air pressure control and pressure limiting Control is done using a variable frequency drive or supply fan inlet guide vanes The setpoint and deadband for supply air pressure control are configured through the operator display or PC software Supply Air Pressure Limiting The factory installed controls in the Voyager rooftop unit are used for supply air pressure limiting If the supply air pressure exceeds the fixed supply air static pressure limit of 3 5 in wc the supply fan is shut down and flow inlet guide vanes or VFD is set to minimum The unit is allowed to restart four times If the over pressurization condition occurs on the fifth restart the unit shuts down and a manual reset diagnostic occurs Fan Pressure Optimization Fan pressure optimization is a function that automatically reduces supply fan volume until the VAV damper position in the zone of gre
52. ea Daily Operator Screen Zone 01 The temperature in this area is 72 7 F The temperature setting is 73 2 F av The area is currently Occupied The Control Action is currently Cool Override Q Ly Check the occupancy AS schedule Advanced Status And Setup Operation VAV SVU01A EN 51 TRANE Using the Operator Display Adjust Area Temperature Setting 1 Press View to display building information 2 Press the appropriate area button to display the daily operator screen for that area See Figure 11 3 Press the Up or Down arrow to display setpoints for the selected area See Figure 12 4 Press the desired setpoint to display the standard analog adjustment screen Note If the temperature setpoint is under thumbwheel control the system will display a setpoint adjustment error 5 Enter the desired setpoint and press OK The Enter a Number confirmation screen displays Figure 11 Example of Selected Area Setpoint Screen Zone 01 Touch a button to change a setpoint Unoccupied Cooling Setpoint 85 0 F Occupied Cooling Setpoint 73 0 F Occupied Heating Setpoint 71 0 F Unoccupied Heating Setpoint 60 0 F 52 VAV SVUO1A EN TRANE Figure 12 Example of Analog Adjustment Screen Enter a Number value is 73 0 F Change to EE pogo EE Cancel Clear 6 Press Yes to confirm the changes The Setpoints screen for the area displays The new set
53. eat e below the heating setpoint the control action is cool e between the heating and the cooling setpoints the control action remains unchanged VAV SVU01A EN TRANE VAV SVUO1A EN Zone Voting for System Heat or Cool Each zone attached to the VariTrac CCP can vote for heating or cooling A zone is eligible to vote if it is in communication with the central control panel has a valid zone temperature reading is edited to be a voter in the UCM setup is not tagged by the central control panel See UCM Zone Tagging below Each zone gets one vote Occupied and unoccupied zones have the same voting rights UCM Zone Tagging for No Vote A UCM zone is tagged and excluded from the voting decision if the e VariTrac system is not in morning warm up or precool zone Is receiving its desired supply air heating cooling zone temperature is furthest away from setpoint of all voting zones receiving the desired supply air zone temperature remains three or more degrees away from setpoint for 60 minutes A tagged zone continues to operate and communicate normally but cannot vote for heat or cool This prevents one zone from driving the comfort of all other zones if its setpoints or load cannot be satisfied The zone becomes an eligible voter when e it returns to within 1 F of its active setpoint the system becomes unoccupied e UCM tagging is disabled Tagged zones are displayed in the service
54. eat An auxiliary 24 Vac output is also available during a call for local heat The outputs are controlled as follows Output 1 J9 Output 2 J10 Output 3 J11 Drives the valve closed Drives the valve open ON when pulse width 100 OFF when pulse width lt 50 Note If the local heat is configured to Prop hot water and aux output and the VariTrac CCP goes into the heating mode local heat remains enabled Local heat is disabled whenever the HVAC unit supply fan is off A call for local heat when the supply fan is off will not bring the supply fan on 1 3 stages hot water perimeter Three stages are available to control local hot water heat The outputs are staged on by space demand The stages are controlled on off by the following differentials Output 1 J9 Output 2 J10 Output 3 J11 ON heating setpoint ON 1 0 F below heating setpoint ON 2 0 F below heating setpoint OFF 0 5 F above heating OFF 0 5F below heating setpoint OFF 1 5 F below heating setpoint setpoint Note If the local heat is configured to 1 3 stages hot water oerimeter and the VariTrac CCP goes into the heating mode local heat remains enabled Local heat is disabled whenever the HVAC unit supply fan is off A call for local heat when the supply fan is off will not bring the supply fan on Varilrac dampers factory configured as NCHW use this type of local heat control 27 Sequence of Operation
55. ed operation and continue to display UNOCC To release the continuous unoccupied mode override hold down any button until the normal display returns Failure Modes Three failure modes exist for the VariTrac UCM Zone sensor failure Zone sensor setpoint failure e Communications failure UCM Interface The UCM can be monitored and controlled from the VariTrac central control panel operator display or using a PC with VariTrac PC software VAV SVUO1A EN TRANE VAV SVUO1A EN Zone Sensor Operations The zone sensor module utilizes a 10K thermistor element to measure zone temperature The zone sensor module has the following options Zone temperature Zone setpoint control e Timed override and cancel Zone Temperature Each zone sensor module includes a zone temperature sensor element Zone Setpoint Control A zone only uses the thumbwheel setpoint on the zone sensor during occupied times if the thumbwheel function on the zone sensor is edited to enable on the Zone Setup screen Timed Override and Cancel Press On or Cancel on the zone sensor module to issue timed override commands When On is pressed on a zone sensor shorting the zone temperature sensor circuit the UCM starts the two hour timed override timer at the VariTrac CCP This affects all group members When Cancel is pressed for at least two seconds on a zone sensor module the UCM sends a TOV cancel signal and resets the timed override t
56. essenseeeeeessenseeeeeesees 78 CCP Hardware and Software Functions E 80 System Setup and Status rrrrrrnnnvvrvnvrvrnnvnnrrrrrrnnnvnnrrsrrnnnrnnessnrsnnnennsssesnnnennse 83 System BE 83 System Name ereen eei mediet dn dn dd fan 84 HVAC UnitTy Pe aii aed tee a nanan ane tied 84 Control Mode kuntuuuanimirdaianmserandseded endt dste ake 84 Supply AirTempering usssrrvvvervrnnavvrvernrnnsvrrevernrnnsrrreressnnsvrvevesssnnnner 84 Discharge Cooling Setpoint rrrnnnnanvvvvnnnnrnnnnnvenrsrnnnnnnvnnrsrnsnnnvnnenr 84 Discharge Heating Setpoint rrrnnnnnanvvvvnennannnrvvvnrsrnnnnnnennssnssnnneneenr 84 Minimum Opposite Callers rrrrvennrnnnvrvvvennnnnvrrenennnnnnvvevensssnsrrveenens 85 Minimum Opposite Strong Callers cccccccccesseeeeesesenseeeeessenaees 85 Static Pressure Setpoint Multiplier rrrssrvrrrrrrnnnvrrevrrnrnsrrreverrrnnner 86 System Balance Mode AN 87 Adjust Groups for Balance Mode rsrrrvennannnvvrvnnnrnnnvvvennsrnnnrrvenssennn 88 Disabling the System Balance Mode AA 89 Changing Limits Globally esscriuan eiei i ee 89 Calibrate Le EE 90 System EE 91 vi VAV SVUO1A EN TRANE VAV SVU01A EN Zone Setup and Status sessirnir ie aeee an ii oiee aia 96 Zone SELUP EEN 96 Zone Nameer E Are HA ee 97 He t Cool Vote mrin eal heer i iii adie 97 Use Local Setpoint ege egddrkReeEg EREN e d Ed ddCdER EEGEN 97 Nee EE 97 Unoccupied Cooling Setpoint rvvrarrrrvvvnnnannrnvenerrrnsrnnennrssrsrnneneeer
57. ft Corporation Printed in the U S A 2002 American Standard Inc All rights reserved VAV SVU01A EN TRANE VAV SVU01A EN Contents About This Guide nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 1 VariTrac CCP Naming Conventions eee e eee eee eee eee aces eeeeeeeeeeeeeeeenenees 1 Cautionary Statements rrrrvrnaannnvrvvnrnrnnnvvvennrsannnnnenenssnnnnnnennsssnsnnnnnnsssnnsnnnnnnne 2 Related Literature aus dnadmin as 2 VariTrac History ee ENEE ENEE ENNEN ENKEN 3 Feature Summary gue EE 5 New Featuresissudrrkehemesemesdrdmdndafusdtnnsekedurj net 5 Functional Enhancement ennnrnnnnvnnnnnnnrnnnvnnnnnnnnnnvnnnnnnnrnnnennnnnnennsennnnnnevnnner 6 Increased Zone Count mrmnnnnvnrnnrrnnvvnrnervrnnnnnneenennnnnnnenennennnnnenennennnnnnenenennn 6 Discharge Air Control aaepe aiae aaa eaa a EES 6 Supply Air Tempering canoas neria hEN tanh EKAS EESE AEE 6 Feature Summary oiec reaa A A A AAA T ai 6 CO Based Demand Control Ventilation E 6 Zone Occupied Standby Function wwrrnnvvvvvrrrrnnrrreverrrnnnrverervrnnsrreressennnr 6 System Balance Mode ege EE DEENEN 6 Global Sensor Setpoint Limit Set up wwrrrrrvvvrravnnrrnvrnrrrrnrnnrrerrernrnnnnneer 6 Software Change History ee ENNEN EN 7 General Information nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 9 Central Control Panel armeries iia e aa a kar eee hee 9 Communicating Sensor Bypass Control Assembly mrrnnrvnnannvnnvrvrrarrnnnvnnne 9 Bypass Dampers rerit enaa A AA
58. group is occupied and the air conditioning system is in zero energy state no stages of heating or cooling energized for more than four minutes When the ventilation mode is active the vent flow multiplier is not allowed to drop below 4 0 For example if the cooling minimum position is set to 10 percent the damper goes to 40 percent open 10 x 4 0 40 during the ventilation mode e Enforce minimum while unoccupied Yes enforces the minimum positions of the zones during the unoccupied mode No allows the dampers to go fully closed e Fans The fans in parallel fan powered boxes can be enabled or disabled Series fans cannot be overridden e Local heat Zone local heat can be enabled or disabled Note The fans in series fan powered VAV boxes cannot be overridden and are not controlled by the occupancy schedule Series fans only go off when the air valve is fully closed 21 Sequence of Operation 22 TRANE System Balance Mode When the system balance mode is enabled the CCP automatically prepares the VariTrac system for balancing When enabled the CCP sets the following parameters e Starts the supply fan Turns off and disables all stages of heating and cooling e Closes the bypass damper s Opens all groups of zone dampers to their maximum position The system may now be balanced manually as a single zone system The balanced mode offers a group override function for the four groups This function
59. he zone UCM to the CCP The program can be configured to use one zone CO sensor as its source or it can be configured to hunt through all zones with sensors attached and use the highest value System Calibration Upon powerup or a change from the occupied to the unoccupied mode the system goes through a calibration function If the CCP has no schedules 24 hour operation the system calibrates approximately once every seven days The calibration procedure can be manually started by pushing the Calibrate Now function button available on the operator display or via PC software During calibration all VAV UCMs are issued a reset command to perform a self calibration zero flow function Note During the transition form the occupied to unoccupied mode the CCP checks to see if calibration has been performed for any reason during the last 23 hours If calibration has occurred calibration is skipped and the previously stored values is used Zone Occupied Standby Function A VariTrane VAV UCM can now have an occupancy sensor connected to it and it can be configured to perform an occupied standby function This mode is available whenever the delivered VAV system is in the occupied mode If no motion is detected by the zone occupancy sensor the unoccupied setpoints remain in effect When motion is detected in the space the UCM shifts to its occupied setpoints and remains that way until 30 minutes adjustable after motion ceases During the un
60. he zone setpoint menu During unoccupied operation the zone will control to the programmed unoccupied setpoints These setpoints have factory defaults of 85 F cooling and 60 F heating The setpoints can be edited in the zone setpoint menu Zone sensor mounted setpoints are not applicable in the unoccupied mode UCM Zone Occupied Standby Function A VariTrac UCM Version 4 0 or later can be configured to perform a zone occupied standby function Occupied standby allows a zone to hold at its unoccupied setpoints until an occupancy sensor signals activity in the zone The UCM then controls to its occupied setpoints After space activity ceases the UCM returns to the occupied standby mode and again controls to its unoccupied setpoints This function is only active when the VariTrac system is in the occupied mode This function only affects the behavior of the zone being served by the UCM and has no impact on the occupied unoccupied state of the system If the system is in the unoccupied mode the UCM functions as it normally would and controls to its unoccupied setpoints An occupancy sensor with a normally open occupied switch must be connected to the UCM at the terminals marked 24V and BIP When the UCM senses a contact closure across the 24V and BIP terminals it places the zone in the occupied standby mode The function defaults to disabled and must be enabled in the UCM setup menu to become active An occupancy sensor with a built in time de
61. identify your selected change The next screen component provides warning messages that caution you about the selected operation Press Yes to execute the operation previously set up Press No button to cancel the operation Figure 8 Example of Confirmation Screen Enter or Change the Text Zone 01 Do you want to change it to Bryan s Office 49 Using the Operator Display 50 Figure 9 View Screen Sequence Home Page y View gt Setpoint Adjust If Allowed Building Status Information gt Override Operation See After Hours y Daily Operator Screen gt Check the Occupancy gt Schedule See Schedules p and Setup Advanced Status System Administrator Only VAV SVU01A EN TRANE View Procedures The View function allows access to setpoints override functions occupancy schedules status and setup of a specific VariTrac system zone All view functions begin at the VariTrac Home screen Additional in depth information can be found in the Advanced section of this manual Determine Area Temperature 1 Press View to display building status information Note Use the Up or Down arrow to locate the desired area Determine Area Temperature Setting 1 Press View to display building status information 2 Press the appropriate area button to display the daily operator screen for that area Figure 10 Example of Ar
62. ies and improve existing operation Each new software version includes the features of previous versions Only the latest software version is shipped in new VariTrac CCP units Existing units may contain a previous version The following information states the history of VariTrac CCP embedded software version changes Version 4 0 284 Pre release version of VariTrac 3 central control panel Version 4 0 290 First release of VariTrac 3 central control panel Version 4 1 296 Second release version of VariTrac 3 central control panel e Corrected CCP to Voyager Commercial occupancy state sync issue when power was cycled at the unit but not at the CCP e Corrected CCP to Voyager Il slave state sync issue when power was cycled at the unit but not at the CCP Software Change History 8 VAV SVUO1A EN TRANE VAV SVU01A EN Chapter 5 General Information The VariTrac comfort control system brings individual temperature control to each comfort zone in a building while using the same single zone air conditioning unit VariTrac varies the flow of supply air to each zone providing the heating and cooling capacity required The VariTrac changeover bypass VAV system includes the following components e VariTrac central control panel CCP e Communicating sensor bypass control assembly e Main supply duct bypass damper s e VariTrac zone dampers with unit control module UCM and zone temperature sensor Central Control Panel
63. imer to zero Pressing any zone sensor modules On or Cancel button does not affect the zone temperature reported from the UCM Note TOV buttons should be pressed for at least 2 seconds but not more than 15 seconds 31 Sequence of Operation 32 TRANE Modem Interface for Remote Communications If a Tracker Version 10 panel is available and the VariTrac CCP is connected to it the CCP can be accessed remotely via the Tracker modem using the Tracker PC software If no Tracker is available an external modem can be connected to the VariTrac PC port RJ 12 style socket for remote site communications Modem Requirements for the VariTrac CCP It is recommended that a 56K baud US Robotics Sportster fax data external modem be used for VariTrac CCP applications This is the only modem that has been tested to function properly with the CCP and is the only modem application Trane will support with VariTrac A dedicated phone line should be provided for the modem Configuring the External Modem The following configuration must be followed for 56K baud US Robotics fax data external modem e Check the DIP switch settings on the back of the modem e Make sure that switches 1 4 7 and 8 are down Make sure that all other switches are up Connecting the Modem to the VariTrac CCP Use the following Trane adapters and cables to connect the modem to the central control panel 1 Use the 35914260 RJ12 to RJ12 cable and the 35914
64. imum Position 10 Local Heat Minimum Position 35 EEE Airflow Maximum Position Airflow values display in percent open for VariTrac pressure dependent dampers and in flow rate for VariTrane pressure independent boxes Press Maximum Position to edit the zone maximum position setpoint This is the maximum position to which the damper opens unless overridden by a drive open command Airflow Cooling Minimum Position Press Cooling Minimum Position to edit the zone cooling minimum position setpoint This is the minimum position to which the damper closes when in the cool mode unless overridden by a drive closed command or by initiation of the energy saver mode Airflow Heating Minimum Position Press Heating Minimum Position to edit the zone heating minimum position setpoint This is the minimum position to which the damper closes when in the heat mode unless overridden by a drive closed command Local Heat Minimum Position UCM 4 0 and later Press Local Heat Minimum Position to edit the zone local heat minimum position setpoint This is the minimum position to which the damper closes when local heat is energized unless overridden by a drive closed command available in UCM Version 4 0 and later Local heat must be present and the setpoint must be manually activated to become functional 100 VAV SVUO1A EN TRANE VAV SVU01A EN Figure 52 Example of Zone Setup Selections Screen page 5 Zone Setup Selection
65. in the selected mode until it is manually returned to the auto mode 16 VAV SVU01A EN TRANE VAV SVUO1A EN Priority Shutdown Priority shutdown is initiated by e a priority shutdown command from Tracker closing the CCP priority shutdown input failure to detect any communicating zone UCMs e failure to detect a communicating sensor bypass control assembly at Address 33 changeover bypass mode only e failure of the communicating sensor bypass control assembly discharge air temperature sensor changeoverbypass mode only ahigh temperature input alarm from the Voyager high temperature switch input or Reliatel options module e failure to detect any voting zones all zones tagged as no vote The VariTrac CCP returns to normal operation when the priority shutdown condition is corrected Priority shutdown forces the following control actions e Turns off the main supply air fan minimum on time not enforced e Disables all stages of heating and cooling minimum on time not enforced e Disables all VAV local heat if present e Disables all VAV parallel fans if present e Drives all VAV dampers to the maximum open position e Drives the bypass damper s to 50 percent open Voyager Reliatel Rooftop Operation versus Binary Output Control The VariTrac CCP automatically recognizes and communicates directly with a Voyager or Reliatel unit on the communications link The relay board in the central control panel is n
66. inimum number of opposite calls to change over This is an editable setup parameter with a range of 1 to 4 factory default is 2 All current callers must be satisfied before the system is allowed to change over A minimum time between changeovers is enforced The editable setup parameter has a range of 10 to 60 minutes the factory default is 15 minutes The counter begins running immediately after a changeover occurs and must expire before changeover is allowed The time remaining on the counter is displayed in the operator display and PC software Example The Minimum Opposite Calls to Changeover is set to 2 If the system is in the heating mode and three zones are calling for heat all three zones must be satisfied The system changes over if two or more zones are calling for cooling and the changeover timer and all minimum on off times are satisfied Note During the unoccupied mode all groups unoccupied the Minimum Opposite Calls to Changeover functions the same as in the occupied mode Heat Cool Changeover from Opposite Strong Callers A heat cool changeover also occurs if enough opposite strong callers exist See Zone Heat Cool Call Strength p 14 Minimum Opposite Strong Calls to Changeover is an editable setup parameter with a range of 1 to 4 factory default is 2 All current mode callers do not have to be satisfied but the minimum time to changeover and all minimum on off timers must expire before changeover is allowed Not
67. ion 4 0 or later Navigate from screen to screen using the Up or Down arrows To access zone setup from the VariTrac home screen 1 Press Advanced 2 Press Zone Setup and Status 3 Press Zone Setup The Building Information Zone Setup screen appears See Figure 47 4 Select a zone by pressing a button from the zone list You may need to use the Up or Down arrows to view all available zones Figure 47 Example of Building Information Zone Setup Screen Building Information Zone Setup Touch a button to select a zone Bryan s Office Zone 1 Dick s Office Zone 3 Sharon s Office Zone 2 Page 1 of 1 VAV SVU01A EN TRANE VAV SVU01A EN Zone Name Press Zone Name to enter a description name for the Zone The name can contain a maximum of 24 characters including spaces The default name is Zone xx See Figure 48 Heat Cool Vote Press Heat Cool Vote to enable or disable the heat cool vote for the zone Each zone attached to the VariTrac CCP can vote for heating or cooling Each zone has one vote A zone can have its vote disabled so that it cannot make the VariTrac system bring on heating or cooling See Figure 48 Use Local Setpoint Press Use Local Setpoint to enable or disabled the local setpoint in the zone If the setpoint thumbwheel on the zone sensor is enabled the thumbwheel becomes the active occupied setpoint subject to limits The setpoint at the thumbwheel is the active occupied cooling se
68. ion allows you to access the setup functions and overrides for the four groups and assigns the VAV UCMs attached to the system to one of the four groups To access Group Setup from the home screen 1 Press Advanced 2 Press Group Setup The Building Information Group Status screen displays See Figure 55 3 Press a group button to select a group from the list The Group Setup Selections screen displays See Figure 56 Figure 55 Building Information Group Status Screen Building Information Group Status Touch a button to select a group Group 1 Group 2 Group 3 Group 4 OH O O OH G G G O O O O O CE CE CE 5 5 5 5 T T T T ei ei bei ei a Figure 56 Group Setup Selections Screen page 1 Group Setup Selections Touch a button to change a setup value Group Name Group 1 vent Mode Disabled Flow Override Auto Energy Saver Mode Disabled Page 1 of 2 el 9 VAV SVUO1A EN TRANE VAV SVU01A EN Group Name Press Group Name to enter a group description The name can contain a maximum of 24 characters including spaces The default name is Group x Vent Mode Press Vent Mode to enable or disable the ventilation mode for the group When enabled this mode allows dampers to open for greater ventilation This occurs when the group is occupied and the airconditioning system is in zero energy state no stages of heating or cooling energized for more than f
69. ite Callers to change the minimum number of normal callers required for changeover default 2 data entry range 1 4 The VariTrac CCP requires a minimum number of opposite calls to change over All current mode callers must be satisfied before the system is allowed to change over A minimum time between changeovers of 15 minutes factory default is enforced The counter begins running immediately after a changeover occurs and must expire before changeover is allowed The time remaining on the counter is displayed on another screen See Figure 35 Example Minimum opposite calls to changeover is set to 2 If the system is in the heating mode and three zones are calling for heat all three zones must be satisfied If two or more zones are calling for cooling and if the changeover and all minimum on off times are satisfied the system changes over Minimum Opposite Strong Callers Press Minimum Opposite Strong Callers to change the minimum number of strong callers required for changeover default 2 data entry range 1 4 A heat cool changeover also occurs if enough opposite strong callers exist Strong callers are described in Zone Heat Cool Call Strength p 14 All current mode callers do not have to be satisfied but the minimum time to changeover and all minimum on off timers must expire before changeover is allowed See Figure 35 Note During the unoccupied mode all groups unoccupied the minimum opposite calls to changeover automa
70. lay is recommended to avoid nuisance changeover Drive to Maximum A zone can be manually overridden from the zone sensor to drive to the maximum position Mechanical sensor Rotate the setpoint thumbwheel on the zone sensor to the position fully clockwise and push the TOV On button The zone goes to the maximum override position To release the maximum position override move the setpoint thumbwheel on the zone sensor from the position into the normal setpoint range Digital zone sensor Hold the On and Up arrow buttons until the screen goes blank Release the buttons The display will show MAX while the zone damper modulates to its edited maximum position To release the maximum position override hold down any button until the normal display returns 29 Sequence of Operation 30 TRANE Override to Unoccupied A zone can be manually overridden from the zone sensor to go into the continuous unoccupied mode Mechanical sensor Rotate the setpoint thumbwheel on the zone sensor to the position fully counterclockwise and push the TOV On button The zone goes into the continuous unoccupied mode To release the continuous unoccupied mode override move the setpoint thumbwheel on the zone sensor from the position into the normal setpoint range Digital zone sensor Press the On and Down arrow buttons until the screen goes blank Release the buttons The display will show UNOCC The zone will begin continuous unoccupi
71. lts 3 F below the cooling setpoint See Heat Setpoint Offset below Unoccupied cooling setpoint This is the active cooling setpoint when the zone Is unoccupied e Unoccupied heating setpoint This is the active heating setpoint when the zone Is in the unoccupied mode e Cooling setpoint low limit The cooling setpoint low limit is applied to the active cooling setpoint with no effect on the operator entry of setpoints When the setpoint is set below the cooling setpoint low limit the zone uses the cooling low limit as the active cooling setpoint The zone continues to control normally using this setpoint e Cooling setpoint high limit The cooling setpoint high limit is applied to the active cooling setpoint with no effect on the operator entry of setpoints When the setpoint is set above the cooling setpoint high limit the zone uses the cooling high limit as the active cooling setpoint The zone continues to control normally using this setpoint Heating setpoint high limit The heating setpoint high limit is applied to the active heating setpoint with no effect on the operator entry of setpoints When the setpoint is set above the heating setpoint high limit the zone uses the heating setpoint high limit as the active heating setpoint The zone continues to control normally using this setpoint Heating setpoint low limit The heating setpoint low limit is applied to the active heating setpoint with no effect on the operator ent
72. n 3 min Cool 2 3 min 3 min Stage 2 3 min 3 min Heat 1 3 min 3 min Reversing Valve 4 min 4 min Heat 2 3 min 3 min Auxiliary Heat 2 min 1 min After it is energized a stage must remain on until its minimum on time is satisfied After a stage is turned off it cannot be turned on again until its minimum off time is satisfied Morning Warm Up Precool Mode When the first CCP group becomes occupied the central control panel enters the morning warm up precool mode This mode holds the ventilation air damper closed on the HVAC unit until the system restores the zone temperatures to their occupied setpoints On a Voyager Reliatel unit the ventilation damper is commanded closed via the comm link On noncommunicating HVAC systems relay board control the ventilation damper is controlled by Spare Output Relay 6 The mode terminates when half of the occupied voting zones are satisfied or become opposite callers Morning warm up also terminates after two hours or if the system heat cool mode changes The spare output is energized during morning warm up and de energized when morning warm up terminates Manual Heat Cool Mode Control The CCP allows manual heat cool mode selection via the operator display or PC software The VariTrac system normally operates in the autochangeover mode If manual selection of the mode is required the operator may manually place the system in the heat cool off or auto mode The system remains
73. n be adjusted via the VariTrac PC software See Figure 34 Discharge Cooling Setpoint Press Discharge Cooling Setpoint to change the discharge cooling setpoint The VariTrac CCP controls supply air temperature using a discharge air control algorithm When the VariTrac system is in the cooling mode and there is a call for cool from a zone the CCP controls to the discharge cooling setpoint default 55 F The control algorithm is both deviation and time based This allows the CCP to adjust the number of stages required and the stage cycle rate for the most consistent supply air temperature control The control algorithm meets the minimum on and off time requirements when adjusting stages See Figure 35 Discharge Heating Setpoint Press Discharge Heating Setpoint to change the discharge heating setpoint The VariTrac CCP controls supply air temperature using a discharge air control algorithm When the VariTrac system is in the heating mode and there is a call for heat from a zone the CCP controls to the discharge heating setpoint default 110 F The control algorithm is both deviation and time based This allows the CCP to adjust the number of stages required and the stage cycle rate for the most consistent supply air temperature control The control algorithm meets the minimum on and off time requirements when adjusting stages See Figure 35 VAV SVU01A EN TRANE VAV SVU01A EN Minimum Opposite Callers Press Minimum Oppos
74. n fan not shutting off or a bad static pressure transducer 2 Compressor 1 HPC 2 Compressor 2 HPC Indicates the Voyager ReliaTel compressor contactor control circuit has opened Depending on unit type the condition may result from Compressor contactor coil failure Exceeding high pressure control limit Exceeding discharge temperature limit Exceeding winding temperature limit Compressor Circuit breaker open 2 Compressor 1 Lockout 2 Compressor 2 Lockout Indicates the Voyager ReliaTel compressor contactor control circuit has opened a high pressure control if installed or possibly a burned out compressor contactor coil or the Voyager ReliaTel low pressure control has opened during the three minute minimum ON time on four consecutive compressor starts This is a latching alarm that requires a manual reset The compressor lockouts can be manually reset by pressing the Reset Diagnostics button on the current diagnostic screen 2 Heat Fail Indicates the Voyager has tripped the high temperature limit switch TCO2 This alarm occurs on gas heat units only 2 High Pressure Limit Trip Diagnostic applies to Voyager Commercial VAV units only The high static pressure limit switch mounted in the Voyager unit has tripped 2 HVAC Unit Comm Fail ndicates that communication between the VariTrac CCP and the Voyager ReliaTel unit has failed Likely causes are faulty communication link wire twisted pair or po
75. nager a panel which was designed to manage the HVAC unit bypass damper functions and changeover decisions The functional concept of this original system continues to be the backbone of today s zoning system In the early 90s two important enhancements were added to the system e Trane s new Comm4 communications link for the damper controllers e The ability to directly communicate with Trane s new Voyager UCP electronic rooftop unit controls Trane introduced the second generation of VariTrac in 1995 This generation featured the central control panel as the functional replacement for Comfort Manager The new panel consisted of a resin enclosure optional relay board for 24 VAC unit control and a move to static pressure for bypass control Improved changeover control was added to the operating system and the zone damper controls were upgraded to UCM Version 3 Trane introduced a new generation of VariTrac controls in 2002 This generation kept all the great features of the original VariTrac system plus added new features and enhancements The enhancements were designed to make the 2002 generation of VariTrac the simplest changeover bypass zoning system to install commission and service of any light commercial controls system available today VariTrac History 4 VAV SVUO1A EN TRANE VAV SVPO1A EN Chapter 3 Feature Summary New Features CCP with three piece enclosure design and optional operator display Quick snap
76. nd zone status and perform basic setup of the zone UCMs and the CCP system operating parameters The display is designed to give an installer the ability to commission a VariTrac system without requiring a PC Additionally the operator display has a seven day time clock built in to provide stand alone scheduling capability of the VariTrac system If no Tracker system is on the job the CCP must be ordered with a display See Using the Operator Display p 41 VariTrac PC Software Advanced setup functions in VariTrac are now accomplished with a new Windows based graphical PC software program Connection between the PC and the CCP is made with a standard serial port cable connection Operation of the PC software is supported through online help in the software Tracker Version 10 Panel If the CCP is connected to a Tracker Version 10 panel all setup and status information for the CCP can be accessed and configured from the Tracker operator display This allows you to manage multiple VariTrac systems from one location You may also interface with the CCPs via Tracker PC software either on site or remotely If Tracker is available the CCP may have a blank face plate installed instead of an operator display 33 Sequence of Operation 34 VAV SVUO1A EN TRANE VAV SVU01A EN Chapter 7 Delivered VAV Operation What Delivered VAV Is Delivered VAV describes a small tonnage VAV system made up of three Tran
77. nfirm Cancel Timed Overrides screen displays Press OK The Schedule Override Selections screen displays Press Home to exit this procedure 73 Using the Operator Display 74 VAV SVUO1A EN TRANE VAV SVU01A EN Chapter 9 Advanced Functions The Advanced function allows you to perform in depth setup and or monitor detailed status of four subfunctions All Advanced functions begin at the home screen The subfunctions are e CCP Setup and Service Allows setup and service of the actual CCP panel including time and date e System Setup and Status Allows setup and status of the VariTrac system including discharge air temperature and static air pressure setpoints Zone Setup and Status Allows setup and status of factors pertaining to the VariTrac zones including zone heating and cooling setpoints e Group Setup Allows setup of factors pertaining to the VariTrac groups including ventilation mode and flow override CCP Setup and Service CCP Setup CCP Setup allows you to set the current time set the current date select the time format and choose the units of display To access CCP Setup from the home screen 1 Press Advanced 2 Press CCP Setup and Service 3 Press CCP Setup The CCP Setup Selections screen appears 75 TRANE Advanced Functions Figure 27 Example of CCP Setup Selections Screen CCP Setup Selections Touch a button to change a setup value Current Time 10 46 AM
78. nitiate and cancel occupancy status overrides of areas and schedules All After Hours functions begin at the home screen Note If building occupancy is under higher level control e g Tracker the system responds with timed override prevented Start or Restart an Area Timed Override 1 Press After Hours The Schedule Override Selections screen displays Figure 23 Example of Schedule Override Selections Screen Schedule Override Selections variTrac CCP Press a button to select an action Override a Single Area Override a Single Schedule Override All Schedules and Associated Areas 69 TRANE 2 Press Override a Single Area The Building Information Override Areas screen displays Using the Operator Display Figure 24 Example of Building Information Override Areas Screen Building Information Override Areas Select the area you wish to override Zone 01 Occupied Zone 02 Occupied Zone 03 Occupied Zone 04 Occupied Page 1 of 2 L y 3 Press the button for the area that you want to override The Override Selections Single Area screen displays Figure 25 Example of Override Selections Single Area Override Selections Single Area Zone 01 is currently Occupied Start or Restart Timed Override Cancel Timed Override 70 VAV SVU01A EN TRANE VAV SVU01A EN 4 Press Start or Restart Timed Override The Confirm Single Area Timed Override screen displays Se
79. nsists of naming a schedule creating a timetable and then adding areas to the schedule as members If the VariTrac system is under schedule control of an upperlevel system e g Tracker Version 10 it responds with the Upper Level System Control screen Press Return to exit the VariTrac schedule procedure or Continue to proceed If the VariTrac has lost communication with the upperlevel system it responds with the Upper Level System Control Comm Down screen Press Press to Continue and Return System to Standalone Status hide this screen to permanently remove this screen e g the upperlevel system is removed Press Return to exit the VariTrac schedule procedure or Continue to proceed Change Daily Schedule Name Press Schedule 2 Press the button for the schedule that you want to change The Schedule Specific Editor screen displays The name of the selected schedule appears in the Schedule Name field 3 Press Schedule Name The Enter or Change the Text screen displays Figure 15 Example of Enter or Change the Text Screen Default Schedule 1 0000000000 0000000006 DEEL E ee Clear All Erase 61 Using the Operator Display 62 6 TRANE Enter the desired schedule name and press OK The Enter or Change the Text confirmation screen displays Press Yes to confirm the changes The Schedule Specific Editor screen displays The new name of the schedule appears in the Schedule Name field Press Home to e
80. o Group 1 To change the zone membership for the group 1 Press View or Edit Current Group Members button The Group Member Editor screen displays the current group members See Figure 58 2 Press Add Member to add a new member to this group The Add Unassigned Member screen displays Figure 58 Example of Group Member Editor Group Member Editor Group Name Group 2 Group Member s Bryan s Office Add Member Page 1 of 1 VAV SVU01A EN VAV SVU01A EN 3 Press the button of the zone you wish to add to this group 4 When the confirmation screen appears press OK to add the zone to the group 5 The Add Unassigned Member screen reappears Repeat Steps 2 4 to add more zones or press Home to exit this procedure Figure 59 Example of Add Unassigned Member Screen Add Unassigned Member Members Dick s Office Sharon s Office Page 1 of 1 107 TRANE Trane A business of American Standard Companies www trane com For more information contact your local district office or e mail us at comfort trane com FEE TTS FIG SEE FOR Literature Order Number VAV SVUO1A EN File Number SV AH VAV 000 SVU01A EN 1002 Supersedes New Stocking Location La Crosse Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice Only qualified technicians should perform the installation and servicing of equipment referred
81. o a group and then reset the diagnostic VAV SVU01A EN TRANE Table 4 VariTrac Priority 3 Diagnostics Note Priority 3 diagnostics will place the system in priority shutdown Priority shutdown causes the heating cooling and system fan to shut down Service is required 3 Bypass Comm Fail The CCP cannot communicate with the communicating sensor assembly Likely causes are the sensor assembly has not been properly installed not on the Comm4 link not powered or is not addressed at 33 Comma link is down or the UCM board in the sensor assembly has failed 3 Bypass Configuration Fail The CCP cannot configure the UCM in the communicating sensor assembly as a bypass controller Likely cause is the UCM board at address 33 is not UCM Version 4 or later 3 Bypass Duct Temp Sens Fail The discharge air temperature sensor on the communicating sensor assembly has failed 3 CCP Priority Shutdown Input The priority shutdown input on the CCP terminal strip TB2 6 to TB2 7 is closed 3 Complete VAV UCM Comm Fail There are no VAV UCMs communicating to the CCP on the Comm4 link 3 High Temperature Input Indicates the high temperature input connected to the Trane Communications Interface TCI has opened This causes the Voyager unit to go into priority shutdown 3 ICS Initiated Shutdown A global Priority Shutdown command has been received from the Tracker panel 3 No Voting VAV UCMS There
82. occupied mode the VAV UCM controls to its unoccupied setpoints The occupancy sensor has no effect on unoccupied operation 39 Delivered VAV Operation 40 TRANE Global Sensor Setpoint Limit Setup If the zone sensor setpoint thumbwheel is attached to a zone UCM is enabled the thumbwheel setting becomes the active occupied setpoint The setpoint at the thumbwheel is the active occupied cooling setpoint The active occupied heating setpoint defaults 3 F below the cooling setpoint Each zone UCM has a set of setpoint limits that restrict the setpoint range of the sensor thumbwheel These limits default at the extremes allowing the sensor setpoint to be set anywhere from 55 F to 95 F Reduce this range to 6 F or less during system commissioning The VariTrac CCP allows you to create a single set of limits for the setpoint thumbwheels on the zone sensors and broadcast them to all the zones on the system at one time by pushing a single button The global limit function can be accessed from the CCP operator display or the VariTrac PC software System Balance Mode A delivered VAV system can be placed in the balance mode from the operator display or the PC software using a single button selection In this mode the CCP automatically prepares the system for balancing by starting the supply fan disabling heating and cooling and opening all VAV boxes to their maximum position To compensate for airside diversity the VAV boxes can be ove
83. one Status Screen page 2 Zone Status Zone 2 Sharon s Office Zone damper position 100 Present minimum setpoint 10 Maximum 100 Local heat type 1 3 Stages electric Fan type None or not supported Aux input configured as temp and reads 77 Occupancy sensor input is Disabled Page 2 of 2 Zone number and name The zone number based on the UCM address and the current edited name of the VariTrac zone Zone damper position Current position of the damper as a percentage This will appear as cfm if the zone is configured to measure flow Present minimum setpoint Current edited minimum damper position as a percentage This will appear as cfm if the zone is configured to measure flow Maximum Current edited maximum damper position as a percentage This will appear as cfm if the zone is configured to measure flow Local heat type Indicates whether the zone is configured to control local heat and indicates the type of heat Fan type Indicates whether the zone is configured to control a series or parallel fan powered VAV box and indicates the type of fan Aux input configured as Indicates whether the zone UCM auxiliary input is configured for CO or temperature and indicates the current value Occupancy sensor input is Indicates whether occupancy input is enabled or disabled This line appears on UCM Version 4 and later VAV SVU01A EN 103 Advanced Functions 104 TRANE Group Setup The Group Setup sect
84. ontrast and brightness and calibrating the touch screen so the targets perform properly CCP Service and Testing also allows you to perform CCP hardware and software test and status functions These functions include viewing the status of the CCPs inputs and outputs viewing memory and processor status rebooting the panel and putting the CCP into test mode To access CCP Service and Testing from the home screen 1 Press Advanced 2 Press CCP Setup and Service 3 Press Service and Testing The Service and Test Selections screen displays Figure 28 Example of Service and Test Selections Screen Service And Test Selections Select an option for a detailed service or test Operator Display Parameters CCP Hardware and Software el 77 TRANE Advanced Functions Operator Display Parameters Adjust Contrast Backlight To adjust contrast and brightness of the operator display 1 Press Operator Display Parameters 2 Press Adjust Contrast Backlight The Brightness and Contrast screen displays Two rows of buttons appear one for brightness adjustment and one for contrast adjustment 3 Press the buttons to the left to reduce contrast and brightness Press the buttons to the right to increase contrast and brightness The screen reflects the change as you press the buttons Press Back arrow to exit this procedure The Operator Display Parameters screen displays Figure 29 Example of Adjusting Brightness and
85. ool Requests 2 Strong Heat Requests 0 Page 3 of 5 D System Name Identifies this VariTrac system by name editable Changeover Allowed In Time remaining before changeover is allowed Total Cool Requests Sum total of normal and strong cool callers Total Heat Requests Sum total of normal and strong heat callers Strong Cool Requests Shows how many of the total cool callers are strong callers Strong Heat Requests Shows how many of the total heat callers are strong callers 93 TRANE Advanced Functions Figure 45 Example of System Status Screen page 4 System Status system Name Sales Department Unit External Time Clock Input Open Supply Fan On Compressor 1 On Compressor 2 On Heat 1 Off Heat 2 Off Binary Output Relay De Enerqized Page 4 of 5 System Name Identifies this VariTrac system by name editable External Time Clock Input Indicates whether the time clock input on the CCP subbase is presently open or closed Supply Fan Indicates whether the supply fan presently on or off Compressor 1 Indicates whether the Compressor 1 is presently on or off Compressor 2 Indicates whether Compressor 2 is presently on or off Heat 1 Indicates whether heat stage 1 is presently on or off Heat 2 Indicates whether heat stage 2 is presently on or off Binary Output Relay Indicates whether the spare output 6 relay on the relay board is presently energized or de energized 94 VAV SVU01A EN
86. or sensor failure 1 VAV xx Aux Sens Fail 1 VAV xx CO Sens Fail The auxiliary sensor wired to VAV zone xx has failed Likely causes are faulty sensor connections faulty wiring or sensor failure The CO sensor wired to VAV zone xx has failed Likely causes are aux sensor set to CO and no sensor is installed no power to sensor faulty sensor connections faulty wiring or sensor failure 1 VAV xx Flow Sens Fail The flow transducer wired to VAV zone xx has failed Likely causes are faulty sensor connections or a transducer failure VAV SVU01A EN 57 Using the Operator Display TRANE Table 3 VariTrac Priority 2 Diagnostics 2 All VAV UCMs Tagged The tagging process is enabled and all the VAV UCMs have been tagged The unit will disable all stages of heat and cool and will continue to run the supply fan 2 Bypass Calibration Fail Indicates the CCP failed to complete the calibration process Likely causes are failure to read zero flow fan did not shut off or bad static pressure transducer or failure to read a valid static pressure value with the fan on system not balanced properly oversized ductwork or bad or improperly installed static pressure transducer 2 Bypass Duct Press Sens Fail The pressure transducer on the communicating sensor assembly is indicating a failure because it did not read zero flow during calibration This can result from continuous supply flow during calibratio
87. ot required The VariTrac CCP controls Reliatel or Voyager rooftops directly via a Trane communications interface TCI mounted in the rooftop unit The CCP automatically senses whether the Voyager or Reliatel unit is a heat pump The VariTrac CCP uses an optional relay board with six binary output relays to control the stages of heating and cooling and the supply fan on non Voyager Reliatel airconditioning units The same relay board is used for heat pump and 2 heat 2 cool operation When controlling the HVAC unit with the relay board the unit type heat pump or 2 heat 2 cool must be selected using the PC software or operator display The default is 2 heat 2 cool Sequence of Operation TRANE 2 Heat 2 Cool versus Heat Pump Operation The VariTrac CCP automatically determines if it is controlling a Reliatel Voyager 2 heat 2 cool or heat pump unit and configures the operating parameters such as staging and supply air setpoints Generic units controlled with the optional relay board must be configured as 2 heat 2 cool or heat pump through the operator display or PC software This configures the binary outputs to control in the appropriate sequence Proper relay function by mode is identified in the VariTrac CCP wiring schematic The system default is 2 heat 2 cool Spare Binary Output Control The sixth binary output on the optional relay board is an SPDT unpowered spare output relay An entry in the PC software allows you to choos
88. our minutes When the ventilation mode is active the vent flow multiplier is not allowed to drop below 4 0 For example if the cooling minimum position is set to 10 percent the damper goes to 40 percent 10 x 4 0 40 open during the ventilation mode Flow Override Press Flow Override to access the manual flow override screen The group flow control defaults to auto The member zones modulate their dampers following temperature versus setpoint demand The group members zone damper position can be manually overridden to continuous open closed minimum or maximum Energy Saver Mode Press Energy Saver Mode to enable or disable the energy saver mode for the group When enabled the energy saver mode allows zones to close below their minimum This only occurs if a zone is in the cooling mode with a zone temperature lower than the active heating setpoint or in the heating mode and with a zone temperature greater than the active cooling setpoint This feature limits counterproductive air entering a zone Figure 57 Example of Group Setup Selections Screen page 2 Group Setup Selections Group Name Group 2 View or Edit Current Group Members Page 2 of 2 105 Advanced Functions 106 TRANE View or Edit Current Group Members Each group can have up to 24 members 32 for delivered VAV A zone can be assigned to any group but a zone can only be a member of one group at a time By default all zones are assigned t
89. ply Air Temperature 58 9 F Supply Air Tempering Disabled Bypass Position 0 Supply Fan On Fan Static Pressure 0 33 in wg Fan Static Pressure Setpoint 0 46 in wag Page 2 of 5 System Name Identifies this VariTrac system by name editable Operating Mode Indicates whether the occupied or unoccupied mode is currently in effect Operating Status Current operating status of the system Options are fan only morning warm up precool heat cool or off Supply Air Temperature The supply temperature currently communicated by the duct sensor assembly Supply Air Tempering Indicates whether supply air tempering is presently enabled or disabled This line appears only when connected to a Voyager or Reliatel unit Bypass Position Indicates the bypass position currently communicated by the duct sensor assembly range 0 100 where 0 closed Supply Fan Indicates whether the supply fan is currently on or off delivered VAV systems indicate fan volume 0 100 Fan Static Pressure Shows the duct static pressure currently communicated by the duct sensor assembly Fan Static Pressure Setpoint Shows the static pressure setpoint that the CCP is currently using to control the bypass damper 92 VAV SVUO1A EN TRANE VAV SVU01A EN Figure 44 Example of System Status Screen page 3 System Status System Name Sales Department Unit Changeover Allowed in 0 Minis Total Cool Requests 2 Total Heat Requests 0 Strong C
90. point displays in the appropriate button 7 Continue editing setpoints or press Back to return to the daily operator screen Determine Area Occupancy 1 Press View to display building information 2 Press the appropriate area button to display the daily operator screen for that area Acquire Detailed Area Occupancy Schedule Status Press View to display building information 2 Press the appropriate area button to display the daily operator screen for that area 3 Press Check the Occupancy Schedule The Start and Stop Time Editor screen displays VAV SVU01A EN 53 Using the Operator Display 54 TRANE Override Area Occupancy 4 5 Press View to display building information Press the appropriate area button to display the daily operator screen for that area Press Override Operation The Override Selections Single Area screen displays Note If building occupancy is under higher level control e g Tracker the system responds with timed override prevented Press Start or Restart Timed Override The Confirm Single Area Timed Override screen displays Press OK to return to the daily operator screen Cancel Area Override 4 5 Press View to display building information Press the appropriate area button to display the daily operator screen for that area Press Override Operation The Override Selections Single Area screen displays Note If building occupancy is under higher level control e g
91. red VAV boxes operate their local heat with the main supply fan off Unoccupied local heat calls at the zone level will not energize the main supply fan If unoccupied priority local heat is disabled during the unoccupied mode each zones controls the local heat to the unoccupied heating setpoint minus 2 F for that zone In this mode the zone becomes a heat caller when the space temperature falls more than 1 F below the unoccupied zone heating setpoint If the space temperature falls to more than 2 F below the unoccupied zone heating setpoint the zone heats to setpoint with local heat Unoccupied Control The occupancy of the VariTrac system can be determined one of three ways listed in order of priority high to low Tracker Version 10 control e Scheduling via the CCP time clock Binary input control When the VariTrac system is scheduled by Tracker or the CCP operator display the group scheduling function is available See Group Occupied Unoccupied p 20 When all groups are in the unoccupied mode the CCP begins unoccupied control When the occupancy mode is determined by the occupied unoccupied binary input group scheduling functions are not available All groups follow the state of the binary occupied unoccupied input When a contact closure is made across terminals TB2 8 and 9 the unoccupied mode is initiated for all groups and connected zones TRANE Sequence of Operation During unoccupied control the
92. rridden to close individually or in groups until the required total flow is achieved VAV SVU01A EN TRANE Chapter 8 Using the Operator Display Overview The VariTrac system user interface consists of an operator display on the central control panel and a menu driven interface program in the embedded software The operator display is a liquid crystal display LCD touch screen Figure 1 VariTrac Central Control Panel with Operator Display VariTrac Central Control Panel Operator Display The user interface enables you to set parameters and access control and system status information It uses five screens and a consistent screen layout The five screen types are Home Operation Data display Data entry Confirmation VAV SVUO1A EN 41 Using the Operator Display 42 TRANE Screen Layout With the exception of the home screen each user interface screen conforms to a standard layout see Figure 2 Each screen contains Title bar e Selection buttons Data or data entry buttons e Navigation buttons Title Bar A title bar is displayed at the top of each screen The title bar states the purpose of the screen and or describes the information displayed on the screen Navigation Buttons A screen can display up to six navigation buttons at the bottom of each page The navigation buttons enable you to return to the home screen or to a previously
93. rsion 10 control it passes group TOV signals to the Tracker without taking any control action The Tracker system then initiates aTOV control action and determines the TOV period length If the VariTrac CCP is under local control a group TOV signal starts a two hour timer and controls the group to the occupied setpoints If another group TOV signal is generated the timer is reset to two hours and the group continues to be controlled to the occupied setpoints If the timer expires or a cancel TOV signal is generated the group is released from the timed override control Group Overrides The VariTrac CCP can override several zone functions as a group from the operator display or PC software e Flow control The group flow control defaults to auto The group member zones modulate their dampers to follow temperature versus setpoint demand Zone damper position can be manually overridden to continuous open closed minimum or maximum e Energy saver mode When enabled the energy saver mode allows zone dampers to close below their minimum minimum changes to zero This only occurs if a zone is in the cooling mode with a zone temperature lower than the active heating setpoint or in the heating mode and with a zone temperature greater than the active cooling setpoint This feature prevents counterproductive air from entering a zone e Ventilation mode When enabled this mode allows dampers to open for greater ventilation This occurs when the
94. ry of setpoints When the setpoint is set below the heating setpoint low limit the zone uses the heating setpoint low limit as the active heating setpoint The zone continues to control normally using this setpoint Heat setpoint offset This setpoint has a range of 2 F to 10 F When a zone sensorthumbwheel setpoint is being used the occupied cooling setpoint will equal the zone sensor setpoint and the occupied heating setpoint will equal the zone sensor setpoint minus the zone sensor heating setpoint offset The offset defaults to 3 F and is always displayed and editable even if a zone sensor setpoint is not being used VAV SVU01A EN TRANE VAV SVUO1A EN e Maximum position setpoint This is the maximum position that the damper opens to unless overridden by a drive open command e Cooling minimum position setpoint This is the minimum position the damper closes to when in the cooling mode unless overridden by a drive closed command or by initiation of the energy saver mode e Heating minimum setpoint This is the minimum position the damper closes to when in the heating mode unless overridden by a drive closed command e Local heat minimum setpoint This is the minimum position the damper closes to when local heat is energized unless overridden by a drive closed command available in UCM 4 0 and later Setpoint must be manually activated to become functional Parameters Three parameters control the operation of the zone U
95. s Touch a button to change a setup value Occupancy Sensor Setup Inactive Aux Sensor Set To temp ADLE a Le Occupancy Sensor Setup UCM 4 0 and later Press Occupancy Sensor Setup to enable or disable the occupancy sensor input for the occupied standby function A VariTrac UCM can be configured to perform a zone occupied standby function Occupied standby allows a zone to hold at its unoccupied setpoints until an occupancy sensor signals activity in the zone The UCM then controls to its occupied setpoints Thirty minutes after space activity ceases the UCM returns to the occupied standby mode and again enforces the unoccupied setpoints This function is only active when the VariTrac system is in the occupied mode This function only affects the behavior of the zone being served by the UCM and has no impact on the occupied unoccupied state of the system If the system is in the unoccupied mode the UCM functions as it normally would and enforces its unoccupied setpoints Aux Sensor Set To UCM 4 0 and later Press Aux Sensor Set To to select the type of sensor input either temperature or CO The UCM supports only one auxiliary sensor You must choose either temperature or CO in the Setup menu for the zone UCM The CO sensor is attached to the auxiliary sensor input on the zone UCM The input defaults to temperature The CO value is communicated to the VariTrac CCP for system use 101 Advanced Functions 102 T
96. s necessary Supply Air Tempering It is now possible to enable the supply air tempering function in a Voyager via the CCP This allows the Voyager to cycle a stage of heat on and off to warm up the supply air stream and better manage the load created by increased ventilation air requirements CO Based Demand Controlled Ventilation CO sensors can now be connected to VariTrac zone UCMs The CCP demand control ventilation will reset the ventilation damper position for the Voyager Precedent unit based on the CO level Zone Occupied Standby Function A VariTrac UCM can now have an occupancy sensor connected to it It can be configured to perform an occupied standby function at the zone level during the system occupied mode System Balance Mode A VariTrac system can be placed in the balance mode from the operator display or the PC software using a single button selection In this mode the CCP automatically prepares the VariTrac system for balancing by starting the supply fan disabling heating and cooling closing the bypass damper and opening all zone dampers to their maximum position Global Sensor Setpoint Limit Setup The VariTrac CCP allows you to create a single set of limits for the zone sensor setpoint thumbwheels and broadcasts them to all the zones on the system at one time by pushing a single button VAV SVPO1A EN TRANE VAV SVU01A EN Chapter 4 Software Change History New software versions add capabilit
97. srvvrervvrnnvvrrrrrvrnnsvnrrssrsnnsvnnssssnrnnnnnne 20 Timed Override EE 21 gell eege TEE EN System Balance Mode rrnnnnnannnvvvnnnnrrnnvnnvrrsrrnnnvnnsssrsnnnvnnssssnsnnnrnnsssssnnnennn 22 CO Based Demand Control Venlatton een 22 Global Sensor Setpoint Limit Setup rrrrrrrnnvnrrrrvrrnnnvrrrrrrrnnnvrnrsrrrnnnrnneer 23 VAV SVUO1A EN TRANE VAV SVU01A EN Unit Control Module UCNE 23 UCM Statt ME morira E r ske ransaket aa 23 Setpoints ere anarkisten 24 Parame lot S mne A A near 25 Damper Control 23 ged eg ee 25 Heat Cool Mode Decision for Zones AE 26 Local Heat Control oo ceseecsecesecesecensceesaeeseneeenasessceetneeessaeetapesaseeoates 26 Priority Local Heat i 2ccescdc22 EEN eege need a idear 27 Stand alone Control 27 UCM CO2 Input for VariTrac Demand Controlled Ventilation 28 Occupied Unoccupied Mode 29 UCM Zone Occupied Standby Function srnnvnnnannnnnnvnnrrnnnnnvnnrssrsnnnvnnenr 29 Drive to Maximum resena a E R 29 Override to Unoccupied unnrnnnvvvvvvvrnnnvvvesvevrnnvnnesssrrnnnvnnsssssnnnvnsssssvsnnnenne 30 Failure M d s kane a A a 30 UCM Interface sieniin eaa ad aa N aaa 30 Zone Sensor Operations rsnrrrnnrnnnvnnrrrrrrnnvrversnvrnnnvnnsssrennnrnnesssrsnnnennsssssnnnenne 31 ZoneTemperature ENEE EEN EN Zone Setpoint Control sereia e ea aaee aa e a er 31 Timed Override and Cancel 31 Modem Interface for Remote Communications sessies 32 Modem Requirements for the VariTrac CCP 3
98. summary of the PC software TRANE Sequence of Operation Zone Heat Cool Call Strength After the heat cool mode of the zone is decided the strength of its heating or cooling call is determined Cool caller A UCM becomes a cool caller if it is a voting UCM and its zone temperature is more than 1 F above the active cooling setpoint A UCM loses its cool caller status if it becomes a non voter or if its zone temperature is less than the active cooling setpoint plus 0 5 F e Strong cool caller A UCM becomes a strong cool caller if it is a voting UCM and its zone temperature is more than 2 F above the active cooling setpoint A UCM loses its strong cool caller status if it becomes a non voter or if its zone temperature is less than the active cooling setpoint plus 19F e Heat caller on a UCM with no local heat or Priority Local Heat edited to Off A UCM becomes a heat caller if it is a voting UCM and its zone temperature is more than 1 F below the active heating setpoint A UCM loses its heat caller status if it becomes a non voter or if its zone temperature is greater than the active heating setpoint minus 0 5 F e Strong heat caller on a UCM with no local heat or priority local heat edited to off A UCM becomes a strong heat caller if it is a voting UCM and its zone temperature is more than 2 F below the active heating setpoint A UCM loses its strong heat caller status if it becomes a non voter or if i
99. t Number value keypad Change to New value displays as entered via the keypad Cancels the Accepts new value Clears content of present and ends current data change to field operation entry operation VAV SVU01A EN 47 Using the Operator Display Text entry field Change display to uppercase letter entry screen 48 TRANE Alphanumeric Data Entry Screen The five data entry screens enable you to change alphanumeric parameters such as names of rooms equipment etc The five screens are Numeric Uppercase letter e Lowercase letter Uppercase diacritical mark used in some non English languages Lowercase diacritical mark used in some non English languages To select digits symbols and letters press the appropriate buttons When your entry is complete press the OK button Figure 7 Example of Alphanumeric Data Entry Screen Enter or Change the Text Bryan s Office 0000000000 sr 000000000 Ki Leet Lech I Moves cursor left or right Change Change display to Clears all Erases display to screen offering contents of previously lowercase buttons for text entry field entered letter entry numerals symbols character from screen and punctuation text entry field marks VAV SVU01A EN TRANE VAV SVU01A EN Confirmation Screens Confirmation screens require you to approve the execution of the requested change The first screen component contains one or more fields that
100. t begins As the return air temperature falls below the reset setpoint by 3 F fixed the supply air temperature increases by the reset amount entered by the operator 5 F default Reset from outdoor air If the outdoor air temperature falls below the reset setpoint supply air setpoint reset begins As the outdoor air temperature falls below the reset setpoint by 20 F fixed the supply air temperature increases by the reset amount entered by the operator 5 F default Daytime Warm Up Daytime warm up applies during the occupied period if the selected zone temperature falls below the initiate daytime warm up setpoint Mechanical cooling is disabled the economizer drives to its minimum position and rooftop heating is cycled to satisfy the daytime warm up setpoint Tracer heating setpoint Mechanical cooling remains disabled until the daytime warm up termination setpoint is reached During the daytime warm up mode all VAV boxes provide maximum flow and the air handling unit supply fan operates at 100 percent Daytime warm up default is Zone 1 and is enabled and configured through the operator display or PC software The Tracer heating setpoint and the termination setpoint are usually set the same to minimize the effect on total zone comfort Unoccupied Control Unoccupied control is done using the zone sensor from Zone 1 A different zone can be selected using the PC software The schedule for occupancy can be determined using th
101. t history Feature Summary A summary of the new features and enhancements of VariTrac 3 Software Change History A chronology of version changes to the VariTrac CCP embedded software Introduction to VariTrac General information about the VariTrac CCP VariTrac Operation Overview Basic operation information covering startup heat cool decisions zone controller and zone sensor operations and modem interface Delivered VAV Operation Overview Basic delivered VAV operation information covering startup heat cool decisions zone controller and zone sensor operations and modem interface Using the Operator Display Information and procedures for navigating through the operator display menus including Home View Alarms Schedules and After Hours Advanced Functions Information for advanced users including CCP setup and service system setup and status zone setup and status and group setup VariTrac CCP Naming Conventions The use of the name VariTrac CCP in this manual implies the VariTrac central control panel and the VariTrac CCP embedded system software Where information is unique to one model that model is specified About This Guide TRANE Cautionary Statements The following cautionary statements signal procedures or conditions that require particular attention Personal safety and the proper operation of the system depend upon the strict observance of these precautions AWARNING Indicates a poten
102. the Varilrac CCP goes into the heating mode local heat is disabled Local heat is also disabled when the HVAC unit supply fan is off A call for local heat when the supply fan is off will not bring the supply fan on VariTrac dampers factory configured as ELEC use this type of local heat control VAV SVU01A EN TRANE VAV SVUO1A EN Slow pulse width modulation Pulse width modulation energizes an electric heat output for some portion of a time window The time window for slow pulse width modulation is 3 minutes The on time is based on the percentage of heat required as calculated by the control algorithm of the UCM The outputs of the UCM are controlled as shown in the following table Output 1 J9 Output 2 J10 Output 3 J11 Pulsing Output Pulsing Output ON when pulse width 100 OFF when pulse width lt 50 Note When heating demand is between 0 to 50 of heating capacity Output 7 is pulsing and Output 2 is off When heating demand is between 50 to 100 of heating capacity Output 1 is on continuously and Output 2 is pulsing If the local heat is configured to Slow pulse with modulation and the VariTrac CCP goes into the heating mode local heat is disabled Local heat also displays whenever the HVAC unit supply fan is off A call for local heat when the supply fan is off will not bring the supply fan on Prop hot water and aux output A floating hot water valve controls local h
103. the zone sensor is disabled failed or unavailable Unoccupied Heating Setpoint Press Unoccupied Heating Setpoint to change the unoccupied heating setpoint for the zone 98 VAV SVUO1A EN TRANE Figure 50 Example of Zone Setup Selections Screen page 3 Zone Setup Selections Touch a button to change a setup value Cooling High Limit 78 0 F Heating High Limit 750 F Cooling Low Limit 70 0 F Heating Low Limit 67 0 F Page 3 of 5 2 FAI Zone Sensor Setpoint Limits If the setpoint thumbwheel on the zone sensor attached to a zone UCM is enabled the thumbwheel becomes the active occupied setpoint The setpoint thumbwheel can be set anywhere from 45 F to 100 F Reduce this range to 6 F or less during system commissioning Cooling High Limit Press Cooling High Limit to change the local setpoint cooling high limit for the zone Heating High Limit Press Heating High Limit to change the local setpoint heating high limit for the zone Cooling Low Limit Press Cooling Low Limit to change the local setpoint cooling low limit for the zone Heating Low Limit Press Heating Low Limit to change the local setpoint heating low limit for the zone VAV SVU01A EN 99 TRANE Figure 51 Example of Zone Setup Selections Screen page 4 Advanced Functions Zone Setup Selections Touch a button to change a setup value Maximum Position 100 Cooling Minimum Pasition 10 Heating Min
104. tially hazardous situation which if not avoided could result in serious injury or death ACAUTION Indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury CAUTION Indicates a situation in which property damage only accidents could occur It is also used to alert against unsafe practices IMPORTANT Alerts installer servicer or operator to potential actions that could cause the product or system to operate improperly but will not likely result in potential for damage Related Literature The following literature is referred to or pertains to equipment referred to in this manual e VariTrac CCP installation guide VAV SVNO3A EN e VAV UCM installations and operations VAV SVX01B EN e Voyager service literature e Reliatel service literature VAV SVU01A EN TRANE VAV SVUO1A EN Chapter 2 VariTrac History With the introduction of VariTrac in 1989 Trane brought their expertise in variable air volume VAV controls into the changeover bypass zoning market The concept of changeover bypass zoning brings the flexibility and comfort of VAV systems into the light commercial unitary market at an affordable price The first generation of VariTrac was a 16 zone pressure dependent system The zone dampers featured the same electronic zone controller Trane developed for its VAV boxes operating in the pressure dependent mode The heart of the system was the Comfort Ma
105. tically changes to one so any opposite strong caller can change the system operating mode Figure 35 Example of System Setup Screen page 2 System Setup Select an item to change current value Discharge Cooling Setpoint 55 0 F Discharge Heating Setpoint 110 0 F Minimum Opposite Callers Min Opposite Strong Callers Page 2 of 4 D 85 Advanced Functions 86 TRANE Static Pressure Setpoint Multiplier Press Static Pressure Setpoint Multiplier to change the static pressure setpoint multiplier The VariTrac CCP controls the bypass damper s using measured duct static pressure The CCP compares the measured static pressure to the static pressure setpoint See Figure 36 The static pressure setpoint is calculated by taking the reference static determined at full flow during calibration and multiplying it by the static pressure setpoint multiplier edited here default 1 4 data entry range 1 0 to 2 0 To increase the static pressure setpoint raise the multiplier To decrease the static pressure setpoint reduce the multiplier Figure 36 Example of System Setup Screen page 3 System Setup Touch a button for desired option Static Pressure Setpoint Multipier 1 40 Page 3 of 4 FAI VAV SVUO1A EN TRANE VAV SVU01A EN System Balance Mode In this mode the CCP automatically prepares the VariTrac system for balancing by starting the supply fan disabling heating and cooling
106. tpoint The active occupied heating setpoint defaults 3 F below the cooling setpoint See Figure 48 Flow Override Press Flow Override see Figure 48 to select a damper air valve override parameter per one of the following Auto The zone operates to satisfy zone temperature e Open VAV Close VAV VAV to Minimum VAV to Maximum Figure 48 Example of Zone Setup Screen Zone Setup Selections Touch button to change setup value Zone Name Bryan s Office Heat Cool Vote Ves Use Local Setpoint Disabled Flow Override Auto Page 1 of 5 AE x 97 TRANE Figure 49 Example of Zone Setup Selections Screen page 2 Advanced Functions Zone Setup Selections Touch a button to change a setup value Unoccupied Cooling Setpoint 85 0 F Occupied Cooling Setpoint 75 0 F Occupied Heating Setpoint 68 0 F Unoccupied Heating Setpoint 62 0 F Page 2 of 5 FAI Unoccupied Cooling Setpoint Press Unoccupied Cooling Setpoint to change the unoccupied cooling setpoint for the zone Occupied Cooling Setpoint Press Occupied Cooling Setpoint to change the occupied cooling setpoint for the zone This setpoint is active if the setpoint thumbwheel on the zone sensor is disabled failed or unavailable Occupied Heating Setpoint Press Occupied Heating Setpoint to change the occupied heating setpoint for the zone This setpoint is active if the setpoint thumbwheel on
107. trol action is cool If the zone has a communication failure and has no duct temperature sensor it controls to the last determined control action UCM CO Input for VariTrac Demand Controlled Ventilation Zone CO sensors can be connected to VariTrac zone UCMs Version 4 0 or later The CO sensor is attached to the auxiliary sensor input on the zone UCM The UCM supports only one auxiliary sensor You must choose either temperature or CO in the setup menu for the zone UCM The input defaults to temperature The UCM does not use the CO sensor for any local control function The CO value is communicated to the VariTrac CCP for system use The CCP demand controlled ventilation program uses the zone CO information to reset the ventilation damper position for the Voyager Reliatel unit based on the CO level See CO Based Demand Controlled Ventilation p 23 VAV SVU01A EN TRANE VAV SVUO1A EN Occupied Unoccupied Mode During occupied operation the zone controls to the zone sensorsetpoint thumbwheel if enabled The setpoint at the sensor is the cooling setpoint the heating setpoint is 3 F below the cooling setpoint This heating setpoint offset can be edited in the zone setpoint menu range 2 F to 10 F If the zone sensor setpoint thumbwheel is disabled or has failed the zone will control to the programmed occupied cooling setpoints The factory defaults are 74 F cooling and 71 F heating These setpoints can be edited in t
108. ts zone temperature is greater than the active heating setpoint minus 1 F e Heat caller on a UCM with local heat and Priority Local Heat edited to On A UCM becomes a heat caller if it is a voting UCM its local heat has not been disabled by the CCP and its zone temperature is more than 2 F below the active heating setpoint A UCM loses its heat caller status if it becomes a non voter or if its zone temperature is greater than the active heating setpoint minus 1 59F e Strong heat caller on a UCM with local heat and Priority Local Heat edited to On A UCM becomes a strong heat caller if it is a voting UCM its local heat has not been disabled by the CCP and its zone temperature is more than 3 F below the active heating setpoint A UCM loses its strong heat caller status if it becomes a non voter or if its zone temperature is greater than the active heating setpoint minus 2 F Heat Cool Decision for the CCP The central control panel scans all zones continuously once every 10 to 20 seconds and determines the quantity and the strength of all heating and cooling calls At powerup and on transition from unoccupied to occupied the greater number of heat or cool calls determines the mode of the CCP and the air conditioning system If the votes are tied the system defaults to heat 14 VAV SVU01A EN TRANE VAV SVUO1A EN Heat Cool Changeover for the CCP After the heating cooling decision is determined the VariTrac CCP requires a m
109. uled Groups The Unscheduled Groups List screen displays 4 Press Home to exit this procedure Figure 21 Example of Enter or Change the Text Screen Unscheduled Groups List Unscheduled Group s Group 1 Group 2 Group 3 Group 4 Page 1 of 1 VAV SVU01A EN 67 TRANE Using the Operator Display Figure 22 After Hours Screen Sequence Override a gt Single Area Start or Restart Confirm Single Area gt Single Area gt i y Timed Override Timed Override Building Information gt Override Areas Cancel Single Area Confirm Cancel Single Home Page gt Timed Override d Area Timed Override After Hours gt Override a Single Schedule Pleas Ovenige gt Building Information elections Override Schedule y Override Selections gt Single Schedule gt Start or Restart gt Confirm Single Timed Override Schedule Timed Override gt d gt Confirm Cancel Single Cancel Timed Override Schedule Timed Override Start or Restart Confirm All Schedules Timed Override gt Timed Override Override All Schedules gt and Associated Areas p gt Confirm Cancel gt CancelTimed Override p gt All Schedules Timed Override 68 VAV SVU01A EN TRANE VAV SVU01A EN After Hours Procedures The After Hours function allows you to i
110. uration the program will energize the relay when the peak CO level is reached and de energize the relay when the CO concentration returns to the normal level VAV SVU01A EN TRANE VAV SVUO1A EN Global Sensor Setpoint Limit Setup If the setpoint thumbwheel on the zone sensor attached to a zone UCM is enabled the thumbwheel becomes the active occupied setpoint The setpoint at the thumbwheel is the active occupied cooling setpoint The active occupied heating setpoint defaults 3 F below the cooling setpoint Each zone UCM has a set of setpoint limits that restricts the setpoint range of the sensor knob These limits default at the extremes allowing the sensor setpoint to be set anywhere from 45 F to 95 F Reduce this range to 5 F or less during system commissioning The VariTrac CCP allows you to create a single set of limits for the setpoint thumbwheels on the zone sensor and broadcast them to all the zones on the system at one time by pushing a single button The global limit function can be accessed from the CCP operator display or the VariTrac PC software Unit Control Module UCM UCM Start Up Upon powerup the UCM executes a reset with the following sequence Recalls its configuration data from nonvolatile memory to determine its identity and setup e Recalibrates the damper blade air valve position and if present recalibrates its own pressure transducer and water valve position Begins normal operation
111. wer loss to the Voyager ReliaTel controls 2 Pressure Sensor Fail Diagnostic applies to Voyager Commercial VAV units only The unit is not receiving valid input from the static pressure sensor mounted in the Voyager unit This failure forces the unit to go into shutdown 2 MWU Setpoint Fail 2 SA Reset Amount Fail 2 SA Cooling Setpoint Fail 2 SA Reset Setpoint Fail 2 SA Pressure Setpoint Fail 2 SA Pressure Deadband Fail Diagnostic applies to Voyager Commercial VAV units only The Voyager unit is not receiving a valid input from the indicated manual setpoint potentiometer mounted in the Voyager unit This setpoint panel is typically used for stand alone unit operation and is overridden by the setpoints communicated from the CCP 2 Supply Fan Fail Indicates the supply fan is not providing adequate airflow This input is provided by an optional air pressure differential switch across the supply fan inlet and discharge 2 VAV xx Comm4 Fail The CCP cannot communicate with the VAV UCM at address xx The CCP has communicated with a UCM at this address in the past but cannot do so now Likely causes are the UCM is not on the Comma link the UCM is not powered there are duplicate UCMs addresses at xx the Comm4 link is down or the UCM board has failed 2 VAV xx Must be in a Group 58 The zone has lost its group assignment All zones must be assigned to a group for CCP to function properly Assign the zone t
112. xit this procedure Change Daily Schedule Start and Stop Times 1 2 Press Schedule Press the button for the schedule you want to change The Schedule Specific Editor screen displays The name of the selected schedule is in the Schedule Name field Press Schedule Timetables The Schedule Timetable Editor screen displays Press the button for the day you want to change The Start and Stop Time Editor screen displays See Figure 16 Press the button for the start time or stop time you want to change The Enter a Time screen displays See Figure 17 Figure 16 Example of Start and Stop Time Editor Screen Start and Stop Time Editor Schedule Name Default Schedule 1 Timetable Monday Touch the Start Stop Time to Change ist Start Time ist Stop Time 12 00 4M no time 2nd Start Time 2nd Stop Time no time no time Copy Timetables to Monday through Friday 2 VAV SVUO1A EN TRANE VAV SVU01A EN 10 11 12 Enter the desired time Press OK Press Yes to confirm the change The Start and Stop Time Editor screen displays the entered time Repeat Steps 5 7 to change additional start and stop times for the current day To change the schedule for another day press Back The Schedule Timetable Editor screen displays Repeat Steps 4 7 above to change additional schedules To apply the schedule to Monday through Friday press Press to Copy Timetables to Monday through Friday The Confirmation for

Trane VariTrac Dampers User's Manual

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