TRACE™ 700 Version Information

TRACE™ 700
Comprehensive building analysis software

TRACE 700 Load Design Version Information
TRACE 700 Load Express Version Information
TRACE 700 Chiller Plant Analyzer Version Information

System Requirements
To install and run the program you will need: a Pentium® III or higher processor, Microsoft Windows®* 2000/XP/Vista®* operating system at least 1 gigabyte (GB) of RAM, 500 MB of free hard-disk space (750 if Microsoft .NET Framework version 2.0 is not already installed), 800x600 or greater monitor resolution, CD-Rom drive and Microsoft-compatible pointing device.

Release notes

Release 6.2

• Release 6.2.4
• Release 6.2.3
• Release 6.2.2
• Update 6.2.1
• Release 6.2

Release 6.0

• Update 6.1.3
• Update 6.1.2
• Update 6.1.1
• Update 6.1
• Update 6.0.2.1
• Update 6.0.1
• Release 6.0

Release 4.1

• Release 4.1
• Update 4.1.11
• Update 4.1.10
• Update 4.1.9
• Update 4.1.7
• Update 4.1.6
• Update 4.1.5
• Update 4.1.3
• Update 4.1.2
• Update 4.1.1

Release 4.0

• Release 4.0
• Update 4.0.06B
• Update 4.0.06
• Update 4.0.05
• Update 4.0.04
• Update 4.0.03
• Update 4.0.02
• Update 4.0.01

Release 6.0

Release 6.0.0 was distributed via CD to all active TRACE 700 customers January, 2006.

    New Features (General)
• System-level ventilation inputs.
• ASHRAE recommended RTS cooling methodology based on Heat Balance and ASHRAE Tables.
• Fluid coolers.
• Pumps added to free cooling devices.
• Room relative humidity output report.
• Dedicated outdoor air units can now dehumidify and reheat the air to room neutral conditions.
• Energy recovery devices have been added to model series and parallel supply air tempering (i.e., heat pipe).
• Additional options available for energy recovery devices (i.e., bypass dampers, additional static, fan energy, etc...).
• Dual path airhandlers (Split Dehumidification Unit).
• Direct control of room humidity by reheating supply air.
• Indirect humidity control such as Return and Mixed-Air Bypass.
• Two and three speed fan control for constant volume systems.
• Addition of Energy Cost Budget - appendix G report for use with ASHRAE and LEED models.
• New User's Manual available.
• Checkbox that will reset the vav minimums so they are large enough to handle the ventilation requirement.

    Enhancements
• Heat recovery effectiveness value is now variable.
• Internal loads, glass, materials, construction types, and internal and external shading libraries have all been expanded.
• All reports have been updated.
• Getting started manual has been updated.

    Bug Fixes
• Fixed fan cycling for shutoff VAV systems

[Version 6.2.4] 10/23/2009
This update contains the following items:

• Added "% of Design Capacity by adjusting airflow" as an option on the Coils tab of Create Systems.
• Added "% of Design Capacity by allowing subcool" as an option on the Coils tab of Create Systems.
• Added the ability to export basic Load Design data to HVAC Solutions software.
• Added license activation to software installation.
• Changed "% of Design Capacity Cooling Capacity" to only adjust the latent coil capacity and not airflows.
• Changed the default Main cooling coil capacity units to be "% of Design Capacity by adjusting airflow" for new projects.
• Changed the default Main cooling coil capacity units to be "% of Design Capacity by adjusting airflow" for legacy projects.
• Changed the Report Viewer scrolling progress bar to display in the background.
• Updated the Equipment Energy Consumption report to show heating energy usage for a heatpump cooling plant.
• Updated several system images with additional labeling.
• Updated the Economic Summary report to include more graphs but similar economic information.
• Fixed several errors displaying economic values with large files.
• Fixed an error displaying equipment energy consumption with SI units on the Equipment Energy Consumption report.
• Fixed a demand limiting error.
• Fixed an error that would not use direct dehumidification weather correctly.
• Fixed an error that would display the wrong airflow on the Checksum reports with shut-off VAV boxes and SFPVAV systems.
• Fixed an error that prevented hot gas reheat for dehumidification from working properly with dedicated outside air systems.
• Fixed an error that incorrectly calculated Voz when ASHRAE 62.1 was being used for system level ventilation calculations.
• Fixed an error that incorrectly calculated auxiliary heating coil conduction loads with systems that contain underfloor plenums.
• Fixed an error that would double-account adjacent floor loads during the System Simulation.
• Fixed an error with heating driftpoint temperatures being flagged as potential errors.
• Fixed a biquadratic curve unit conversion issue.
• Added Hot Keys for the Walls tab of Create Rooms.
• Fixed the Walls By Direction report for walls that have the same orientation and multiple openings.
• Fixed the glass/openings export in the Library/Template Editors.
• Fixed a miscellaneous equipment curve issue.

[Version 6.2.3, T7up623.exe] 09/2/2009
This update contains the following items:

• Fixed an error that prevented full year weather files to be imported into Windows Vista in certain circumstances.
• Fixed an issue that would crash TRACE on the Walls tab of Create Rooms.
• Fixed a crash that would occur when using the Heating Building Envelope Loads at time of space peak.
• Adjusted the deck locations for certain configurations of the Type III Isotherm Wheel.
• Fixed an error with Available 100% as the optimum start schedule during specific levels of occupancy.
• Fixed an error that would prevent the Design Cooling Capacities report from being displayed.
• Fixed an error that would incorrectly display fan power when heating-only systems were used in conjunction with PRM calculations.
• Fixed an error preventing the importing of .lds and older TRACE archive files.

[Version 6.2.2, T7up622.exe] 07/31/2009
This update contains the following items:

• Added the ability to use Available 100% as an optimum start schedule.
• Added additional information to the Building Temperature Profiles report which displays when unmet load hours occur.
• Added two additional biquadratic VRF models based upon variable speed compressors and variable flow refrigerant (digital scroll).
• Added additional common errors to be checked when using Scan for Errors including incorrect usage of thermostat schedules.
• Added two additional air-cooled scroll chillers.
• Added the ability to directly import glass from LBNL Window 5.
• Added the ability to import multiple pieces of equipment simultaneously from TOPSS.
• Enabled the template recovery function so each project (.trc) file that is opened is scanned for template problems and fixed.
• Fixed an error that incorrectly calculated time lag based upon thermal mass between 180 and 185 lb/sf when using the TETD method.
• Fixed an error that did not reduce the economizer control point by the underfloor heat pickup with UFAD and DV systems.
• Fixed an error that did not reduce the economizer control point by the extra coil leaving drybulb during indirect dehumidification.
• Fixed an error for DDVAV where heating return airflow was incorrectly calculated when the block airflow is entered.
• Fixed an error that displays energy usage for an alternative when that alternative's Energy Simulation was not calculated.
• Fixed an error which allows for more combined area when using openings than the total wall area.
• Fixed an error that incorrectly calculates daylighting when a room has an exposed floor and dimensional glass geometry.
• Increased the total limit of chilled beams in a single room from 500 to 5000.
• Fixed an error that would crash TRACE when a new alternative is created and the rooms are using a previous alternative.
• Fixed an error that would incorrectly display component energy usage in the Visualizer.
• Fixed an error that incorrectly reports ventilation quantity incorrectly with DV systems.
• Fixed an error which incorrectly calculates the upper stratified layer temperature with DV systems and ducted returns.
• Fixed an error that incorrectly reported auxiliary fan heat on the Airflow Heat Gain and Loss at Coil Peak report.
• Fixed an error that would remove equipment energy usage when demand limiting was used.
• Fixed an error that would prevent TRACE Load (.lds) files from being imported into TRACE or Load Design.
• Fixed an error that ignored the Reset and Lockout definitions for lighting schedules.
• Fixed an error that incorrectly calculates the return air temperature for DV/UFAD systems when a plenum return is used.
• Updated Hot Gas Reheat for Dehumidification to be used with optional ventilation coils.
• Fixed an error that incorrectly applied direct dehumidification with parallel supply air tempering for ACHBEAM.
• Fixed an error that would undersize the main cooling coil design airflow with ACHBEAM.
• Fixed an error that incorrectly reported unmet load hours with ACHBEAM.
• Corrected the optimum start usage for SZ and VTCV systems.
• Fixed an error that incorrectly assigned all coil capacity to the first piece of equipment when airside coils are linked to plant capacities.
• Corrected three infiltration Heating Design definitions (Infil - Low rise office, Infil - High rise office, and Infil - Retail grocery store).
• Fixed several Plant Wizard templates to correctly assign capacity percentages to individual equipment.

[Version 6.2.1, T7up621.exe] 03/31/2009
This update contains the following items:

• Added displacement ventilation airside systems.
• Added active and passive chilled beam airside systems.
• Added the ability to model multiple/different openings per wall including doors.
• Added the ability to create custom door types in the Glass Library.
• Added the ability to define rooms as conditioned or unconditioned.
• Added additional common mistakes to check for in Scan for Errors.
• Updated the default ASHRAE 90.1-2004 library to fix a hot water reset curve error and a PTAC energy rate error.
• Updated the System Temperature and Humidity Profile reports to show occupied and all hours.
• Changed the underfloor plenum location from system to zone-level.
• Changed the default value for Space Sensible Gains to Occupied Layer from 50% to 60% for Ducted Through Underfloor Plenum and Supply Via Sidewall Displacement Ventilation options for Supply Duct/Air Path Location.
• Changed the order of equipment displayed on the Equipment Energy Consumption report.
• Fixed an error that incorrectly converted Height Above Ground when switching from IP to SI units.
• Fixed an error that would remove the humidification coil when a main heating coil for the airside system (e.g. VAVBSK) did not exist.
• Fixed an error that would prevent full year weather from being imported correctly.
• Fixed an error that prevented the Entered Values reports from being viewed.
• Fixed an error that prevented glass types from being imported into the Glass Library.
• Fixed an error that eliminated the Default Air Cooled Condenser when using plant level heat rejection.
• Fixed an error that would incorrectly calculate the coil capacity when using floor multipliers and specifying the coil capacity.
• Fixed an error that would incorrectly calculate the stratification temperatures when adjacent ceiling plenums are used.
• Fixed an error that would prevent the system profile from being edited in Chiller Plant Analyzer.
• Fixed an error that would incorrectly show gas consumption on the Energy Cost Budget report for equipment with no gas consumption when Base Alternative For Energy Cost Budget Method has been selected.
• Fixed an error that would prevent the ASHRAE weather overrides from being saved in an archive file with imported weather.

[Version 6.2, T7up62.exe] 12/10/2008
Release 6.2 was distributed via CD to all active TRACE 700 customers December, 2008. This update contains the following items:

• Added constant and variable volume underfloor air distribution systems.
• Added hot gas reheat for dehumidification.
• Added ASHRAE weather from 2005 Handbook of Fundamentals.
• Added water consumption algorithm for cooling tower to calculate water usage.
• Added Scan for Errors feature which scans for common input errors or missing library information.
• Added ability to input supply air leakage up- and down-stream of coil based upon system type.
• Added ability to input biquadratic unloading curves for cooling plants.
• Added ability to model hot water reset and condensing boilers as a function of OADB.
• Added ability to import several chiller selections from TOPSS.
• Added a glossary of common terms to the help file.
• Added the ability to use reset and lockout tables for lights and miscellaneous utilization schedules.
• Added an ASHRAE Standard 62.1-2004 output report to the Design Reports.
• Changed the PFPVAV system to use PFPVAVMBO calculations.
• Changed VAV minimums to 30% for: BPVAV, BPVRH, DDVAV, PFPVAV, PFPVAVRA, SFPVAV, TAB, 2FDDVV, VAV, VAVFSK, VAVBSK, VRH, VTRACRH, VTRACLC, and PFPVAVMBO.
• Updated TRACE User's Manual with more topics including topics that discuss the new airside systems.
• Updated system graphics.
• Updated system graphics for the Plant Wizard and Chiller Plant Analyzer.
• Fixed the demand defrost curves for air-to-air heat pumps to allow for proper defrost usage.
• Fixed an issue when the exhaust fan kW would be incorrectly calculated based upon entered static pressure.
• Fixed an issue that would not allow a preheat coil to operate with a VRH system during unoccupied hours.
• Fixed an error that would omit the Summer Ground Reflectance when changed by a user.
• Fixed an error that would ignore discriminator controls for some systems.
• Fixed an error that would ignore internal shading for windows that were defined with spectral glass.
• Fixed an error with the fan coil system that would reset room SADB based upon system-level SABD.
• Fixed an error that would incorrectly assign the CO2 sensor location in templates based upon previous alternatives.
• Fixed an issue with DDVAV that would incorrectly set the cold deck return outside-air CFM.
• Fixed an issue that would eliminate chiller energy usage with heat recovery machines and tank charging.
• Fixed an error that would double the multiplier used to link plant and coil capacities.
• Fixed an error that would ignore a split dehumidification system with a single zone airside system.
• Fixed an error that would ignore the use of energy recovery with the radiation heating-only system.
• Fixed an error that displayed the incorrect units for a humidification coil on various Design reports.

[Version 6.1.3, T7up613.exe] 06/18/2008
This update contains the following items:

• Added support for TMY3 weather from the National Renewable Energy Laboratory (NREL).
• Changed the target temperature for conditioning during optimum start from 2 degrees to 0.
• Fixed an issue that would prevent a room relative humidity from maintaining control without an economizer.
• Fixed an error where the sequencing would not be used correctly for multiple chiller plants.
• Fixed an error that would prevent users from calculating with 8760 weather on a network or Vista install.
• Fixed an error that did not display heating plant energy usage when certain types of free cooling were applied.
• Fixed an error that removed supply fan heat from systems with dedicated outside air when cool/heat is selected.
• Fixed an issue where the template assignments would not copy properly when "based on" was selected.
• Fixed an error which forced the preheat coil off during night setback when the fan is cycling.
• Fixed an issue that incorrectly displayed the height above ground, when SI units were used.
• Fixed an error that incorrectly calculated the Discharge Outdoor Air Fraction (Zd) when using VRF.
• Fixed an error that incorrectly sizes a secondary distribution pump when the plant sizing is block.
• Fixed an error that would not allow proper ambient relief calculations when using SI units.
• Fixed an error that allowed a fan energy type to be displayed as non-electric on the ECB Summary report.
• Fixed an error that miscalculated fan power when Automatic Fan Resizing for the PRM was enabled.
• Enhanced archive process to only include needed curve libraries.

[Version 6.1.2, T7up612.exe] 10/30/2007
This update contains the following items:

• Added Manufacturing building to New File Wizard.
• Added economic information to the Performance Rating Method Details report.
• Added economic information, by building rotation, to the Monthly Utility Costs report when an alternative has been selected for the PRM Method.
• Grayed out Driftpoints when thermostat schedules are being used.
• Fixed an error in Energy Cost Budget report that displayed economic information when no utility is defined.
• Fixed an error that allowed the same alternative to be selected for both the Energy Cost Budget and Performance Rating Method.
• New File Wizard files now use the default cooling and heating methodologies.
• The minimum demand percentage will now be grayed unless the user is specifying electrical demand rates.
• Exporting/importing library members now prompts for filename and export location.
• Added new minimum ventilation values dictated by Table 6-1 in ASHRAE Standard 62.1-2007.
• Fixed a problem with the thermal storage equipment not being applied correctly in the Plant Wizard.
• Fixed an error where the heating load was underestimated with rooms that lack internal loads.
• Fixed an error that allowed for supply fan heat to be accounted twice with certain airside systems.
• Fixed an error that counted the supply duct heat gain temperature difference with single duct systems.
• Fixed an error that did not increase the power being consumed by chilled water pumps when the chilled water leaving temperature was reset.
• Report viewer now prompts user to overwrite existing file during export process.
• Rooms are now listed in alphanumeric order when viewing output such as Room Checksums.
• Fixed output errors when using Parallel Fan Powered VAV With Heating Coil on Mixing Box Outlet airside system.
• Updated TRACE Customized Settings to allow the registration information to be changed without reinstalling.
• Fixed an error that added the chilled water pumping energy to Space Cooling when using purchased chilled water on the ECB report.
• Fixed an error that limited the number of systems on the Equipment Energy Consumption report.
• Double-clicking on .trc files will now open the file rather than the program.
• Open dialog box now shows both .trc and .taf files.
• Internal Loads template is now shown first when opening Templates within a project.
• Minimum Demand is now grayed when entering any other utility rates except Electric Demand.
• Fixed an error with exposed floors in gbXML files that would crash the program.
• Fixed an error that cut off heating values on the System Load Profile report when the values were greater than nine digits.
• Utility rates are no longer rounded at the fourth digit.

[Version 6.1.1, T7up611.exe] 6/11/2007
This update contains the following items:

• Added room-to-room air transfer functionality.
• Added the ability to link coil capacity and plant capacity.
• Added automatic fan resizing for Energy Cost Budget and Performance Rating Method analysis.
• Added the ability to automatically rotate the building through 90, 180, and 270 degrees for PRM analysis.
• Added the Chiller Plant Analyzer wizard.
• Added a new report viewer which allows multiple reports to be viewed simultaneously.
• Added a new Performance Rating Method report for 90.1-2004 Appendix G.
• Added cooling coil condensate to the Equipment Energy Consumption.
• Added environmental impact numbers to the Monthly Energy Consumption report.
• Added Daylighting schedules to TRACE Archive Files.
• Added a new Cooling Tower Analysis report.
• Moved ASHRAE 90 Analysis report values to Building u-Factor report.
• Fixed a problem with unmet load hours when using Series Fan-Powered VAV systems.
• Fixed program crash when selecting the Internal Loads tab under Create Rooms.
• Fixed a problem with purchased steam costs on the Energy Cost Budget Report.
• Fixed an external shading malfunction with vertical fins.
• Fixed a crash when using the RTS-heat balance methodology.

[Version 6.1, T7up461.exe] 10/12/06
This update contains the following items:

• Added ASHRAE Standard 62.1-2004 ventilation calculations.
• Added CO2-Based Demand Controlled Ventilation.
• Added ability to model shutoff vav boxes to certain zones connected to a fan powered system (for example, interior zones).
• Added Nominal HP to the units list for fan energy.
• Added EER to the units list for equipment energy.
• Added ability to use Reset\Lockout tables to utilization schedules for Miscellaneous Equipment and Base Utilities.
• Added ability for series heat recovery devices to handle additional requirements from dedicated OA units.
• Program will no longer recalculate to determine the worst case room relative humidity unless the user has selected Direct Dehumidification. This will significantly reduce calculation time.
• Corrected cost/year values on Energy Cost Budget Report.
• Fixed problem with mechanical humidification not meeting the minimum RH value.
• Fixed the Cycle with Occupancy calculations for Bypass VAV systems.
• Fixed an error that occured if an exposed floor was entered and the methodology was RTS.
• Enhanced the Optimized Tower calculations.
• Added an SI conversion for Ambient Modification Curves.
• Corrected the cooling capacity value on the equipment energy report when metric units are used.
• Modified the hours of unmet load calculation.

[Version 6.0.2.1, T7up46021.exe] 03/20/06
This update contains the following items:

• Added feature to recalculate the Chiller Plant Analyzer load profiles based on specific weather location.
• Added functionality to chiller plant analyzer so the .OS1 file is no longer needed with the archive file unless the load profile has been modified.
• Added *Template to component tree view for humidity fields.
• Added dew point lockout control to utilization schedules.
• Added VFD cooling tower and 2-speed cooling tower to the library.
• Added feature to allow user to turn off partition import from gbxml.
• Removed the print confirmation dialog.
• Fixed economizer fields in the component tree view.
• Fixed conversion of version 4 files to version 6.
• Fixed daylighting calculations.
• Fixed energy recovery effectiveness values that came in as negative.
• Fixed fan heat calculations.
• Fixed problem where some files were crashing with RTS methodology.
• Fixed some graphing issues in the profile graphing utility.
• Fixed the Retest Peaks calculation.
• Fixed the energy recovery at design tonnage reduction when an energy recovery device was used on a dedicated OA unit.

[Version 6.0.01, T7up4601.exe] 01/10/06
This update contains the following items:

• Fixed energy recovery for VTCV in heating mode.
• Fixed plate and frame problems introduced from addition of fluid cooler.
• Thermal storage report diplays Average loop temp instead of ground temp for GSHP systems.
• Fixed an issue with the amount of reheat required by SFPVAV

Release 4.1
Release 4.1.0 was distributed via CD to all active TRACE 700 customers December, 2002.

    New Features (General)
• Profile-Graphing utility: provides the ability to view a graphic or tabular representation of the building's load profile and/or hourly plant demands-consumptions.
• New File Wizard: Provides the ability to generate a block building
• Plant Wizard: Pre-built Chiller plant templates have been added to simplfy the process of creating complex chiller plant configurations.
• The ability to apply Weather Overrides to entire year, rather than just to the user defined “summer months”.
• Weather Overrides based on the peak DB and coincident WB in the weather file rather than the information on the General Information tab. Both sections were updated so that both values now match.
• Option to refresh construction types and glass types in the input section.
• Message listing all rooms that are missing library members during calculation.

    Enhancements
• NEW Network operation mode: allows simultaneous multiple user access eliminating the need for ReadOnly/ReadWrite modes.
• Archive utility will only gather library members being used by active file.
• Added warning messages to Create Systems:Advanced screen, and Library Editor.
• Outside Air conditions in psychrometric analysis will now be considered at the Time of Space Peak like the rest of the loads.
• Extended capabilities of Lockouts in the Utilization schedules.
• Weather Design information has been updated to reflect the actual peak in the weather profiles.
• OAHIGH methodology has been removed.
• The AND operator was added to the Utilization lockout screen.
• Geothermal output files (GT1,2,3,4) now only include the groundsource loads instead of the full building load.

    Bug Fixes
• Fixed problems with Room Exhaust causing airflows to be unbalanced. Program will now limit this input to be no greater than the room value for OA+INF.
• Fixed errors in the PlenumDB calculations, involving airflow and Plenum Heat Balance fixes.
• Fixed problem with % of Glass over Wall algorithm when value exceeded the available wall area.
• Fixed ASHRAE62 Reset calculating incorrectly.
• Fixed problems with entering coil conditions for EAHR units and scheduling for Makeup Air units.
• Fixed problem with Glass winter u-value using summer value instead.
• Fixed problems with Auxiliary Coils doubling up capacities.
• Fixed a problem with % of Glass Solar Load to RA not working properly at the system level for VAV systems. System Block Load was being reported incorrectly.
• Fixed Duct Heat Pickup being reported incorrectly.
• Fixed a problem with the Minimum operating condenser temperature not being used for GSHP correctly. TRACE will now account for the heating energy required to maintain the minimum ground source temperature.

    Known Issues
• In chiller plant analyzer mode, the Reject to Condenser Heat field is not working properly. The field will default to Heat Rejection Equipment unless manually changed and recalculated by the user. This item will be fixed in Update 4.1.01

[Version 4.1.11, T7up4111.exe] 03/03/05
This update contains the following items:

• Corrected demand on Monthy Energy Consumption report when Cogen was applied.
• Increased accuracy of how the algorithm calculates the desired SADB when multiple rooms are attached to zone-level VTCV coils.
• Modified Entered Values reports.
• Modified length of combo boxes to fit longest name.
• Fixed problem when Defualt templates were renamed.
• All reports converted to use new Crystal 10.
• Modified System Exhaust value on System Component Selection report.
• Modified plant Sequencing so all defined sequences must be used.
• Added unloading curve to VRV condenser.

[Version 4.1.10, T7up4110.exe] 11/12/04
This update contains the following items:

• Added ability to model Hybrid GSHP applications.
• Modified Daylight Savings calculations.
• Modified curve points for Basic Curve library member.
• Modified Cogeneration part load energy calculations related to unloading curves.
• Corrected R/OA temperature calculation for Optional Vent units.
• Fixed Free Cooling pump energy calculations.
• Modified Bldg Clg/Htg Report to include all 24 hours on one page.
• Fixed sequencing when based on OADB.

[Version 4.1.9, T7up419.exe] 8/27/04
This update contains the following items:

• Modified plant sizing values when Cooling Plant Sizing Method is Block.
• Modified Cogeneration sellback so excess kW is subtracted from each hour of the building’s electrical load.
• Changeover Bypass system now calculates heating coil for block airflow instead of peak.
• Increased the amount of Coefficients used in calculating the construction type properties.
• Modified the Return/OA temp calculation for systems sized on Sum of Peaks.
• Modified Std 62 calculations for constant volume systems.

[Version 4.1.7, T7up417.exe] 6/17/04
This update contains the following items:

• Fixed cloud cover modifier when importing 8760 weather.
• Fixed economizer ignoring Max OA%.
• Fixed import of 8760 weather that contained unknown/blank data fields.
• Fixed problem with Heat Recovery chillers running when load was already handled.
• Added ability to choose which components to be imported with GBxml import.
• Fixed metric conversion of humidity ratio.
• Added msxml4 dlls required for GBxml import and export.
• Added further GBxml error checking.
• Modified the Block plant sizing calculation.
• Fixed equipment usage issue when unnassigned plants existed.

[Version 4.1.6, T7up416.exe] 4/16/04
This update contains the following items:

• Fixed base utilities in the profile graphs.
• Updated the cloud cover multiplier calculation.
• Numerous additions to gbxml import and export feature.
• Fixed heat rejection import in the library editor.
• Fixed ventilation methodology flag.
• Added metric capability to New File Wizard.
• All economic alternatives are required to recalculate if one changes.
• Added new Variable Regrigerant FLow equipment and fan schedules to Library.
• Fixed New File Based On handling of zones.
• Updated CEC-DOE Cooling Methodology.
• Fixed ASHRAE STD 62 ventilation calculation when an optional vent units was selected.
• Fixed problem with too many external shading types.

[Version 4.1.5, T7up415.exe] 03/05/04
This update contains the following items:

• New Chiller Plant Analyzer templates.
• New license agreement.
• Added Library Management tool allowing a user to hide old library members and the members with an EQ description.
• Added Flag to convert fan schedules to Available 100%.
• Added choice to Archive file from the start up screen.
• Fixed special 8760 excel report.
• New System Component Selection Report.
• Added Export GBXML option.
• The weather generate tool was incorrectly using a constant humidity ratio for the entire day. Fixed so it generates the wet bulbs given the user's value of constant relative humidity.
• Fixed OV coil selection info not showing up on the checksums for VAVBSK.
• Fixed bug associated with adding a skin htg sub-system (auxiliary heating coil) to a VRH system that undersized the skin htg coil.
• User defined Preheat Coil temperatures no longer allowed.
• ASHRAE 62. Per a coding change on 12/13/2002, TEMP was ignored when Z=1. Code changed back.
• New lighting and Miscellaneous load values applied to New File Wizard templates.
• Fixed a problem when adding a percentage flag to the equipment tag.
• Fixed problem for all system types when an enthapy wheel or runaround loop is combined with an economizer.
• Fixed problem where secondary pump energy was not showing up if multiple chillers were entered.
• Fixed problem where OV coil selection info is not showing up for VAVBSK in the checksums.
• Fixed problem where the wrong ventilation airflow was reported on the Design Airflow report.
• Changed the relief limit heat sink temperature difference for air cooled chillers from 30 to 40 F.
• New Equipment, unloading curves, and ambient relief curves were added to the library.

[Version 4.1.3, T7up413.exe] 10/30/03
This update contains the following items:

• Added feature allowing multiple files to be merged into one.
• Fixed the external shading type Adjacent Building.
• Fixed the main heating calculation for the Bypass VAV with Reheat system.
• Added new system type Changeover-Bypass VAV with Reheat.
• Added new system type Changeover-Bypass VAV with Local Heat.
• Fixed a problem with not all of the rooms being brought into a daylighting file.
• Added feature to ratio the coil airflow when a space Block airflow is specified.
• Changed the way the Building Peak value is calculated.
• Fixed chiller operation when thermal storage is scheduled off.
• Fixed problem where the Changeover Bypass Vav system was not eliminating the bypass airflow properly during fan cycling.
• Added feature for the database to scan only the alternatives that are required to calculate (decreases calculation time).
• Changed the fan sizing method for the Changeover-Bypass system from Peak to Block.
• File extension is now included when the File Save As command is used in the Load 700 and Load Express mode.
• Building orientation now stored during new file wizard process.
• Floor multiplier is allowed for Load 700 mode.
• Increased the size of the wall and roof construction fields.
• Increased the size of the templates field.
• New message box applied when calculation occurs with nothing selected to calculate.
• Added feature to copy the .day file if the File Save As command is used.
• Added restriction where at least one Monday must be input per month in the calendar.
• Modified calculation methodologies for the New File Wizard files.
• Fixed problem with the roof import from GBXML.
• Removed external shading from roofs.
• Added receptacle energy use to the Economic Summary report.
• Removed the variprime templates from the Plant Wizard.
• Added new Variable primary Flow tempaltes in the Plant Wizard.
• Assigned coils to some existing plant configurations in the Plant Wizard to allow calculation.
• Modified the heat recovery calculations.
• Fixed oversizing value with Terminal Reheat system.
• Fixed problem with liquid dessicant heat recovery.

[Version 4.1.2, T7up412.exe] 6/24/03
This update contains the following items:

• Fixed problem allowing VAV Min stop inputs to be equal to or less than Supply Airflow.
• Fixed Graphical representation of ambient modification curves
• Fixed problem where Oversizing was being double accounted for on a terminal reheat system.
• Fixed problem with fan cycling.
• Fixed Heating Design numbers for Double Duct Multizone system.
• Fixed the "Tab" order on New File Wizard, so a user can tab between all fields.
• Fixed total source energy value on the Energy Summary report.
• Fixed ASHRAE STD62 calculation when rooms with differing Setpoints were assigned to the same system type.
• Added new Plant configurations to the Plant Wizard and Chiller Plant Analyzer.
• Added ability to change program modes to Trace 700 Load Express, Trace 700 Load Design, and Chiller Plant Analyzer, from the menu.
• Added Roof to the internal room on the block building in New File Wizard.
• Added two decimal places for airflows on the room entered values report.
• Added Reheat design capacity values for VAVBSK and VAVFSK.
• Adding a static pressure activates the Apply button.
• Increased the amount of walls per room allowed during Daylighting calculations.
• Allow a mixed utility rate when the kwh/kw flag is yes.
• Added current Air-Cooled Unitary equipment.
• Made changes to the Load Express import. A maximum of 4 alternatives are allowed to be imported.
• Removed the pump from the Electric Resistance Heat library member.
• When a file is renamed, it requires that all sections are recalculated.
• Program checks for empty zones and restricts calculation if one is found.
• Archive utility includes schedules used in a template even if they are not used in the file.
• System Profiles can now be modified in Excel 2000.

[Version 4.1.1, T7up411.exe] 4/1/03
This update contained the following items:

• Fixed problem when a file using 8760 weather was run twice without change.
• Fixed fan units within the graphing utility.
• Fixed problem with Absorption units rejecting condenser heat in Chiller Plant Analyzer.
• Fixed units issue with global airlfow templates.
• Fixed issue with a Stepped Function unloading curve.
• Fixed heat recovery or condenser pump full load units problem.
• Fixed a reporting issue in the Rooms entered value report.
• Fixed the % glass solar to retun air calculation when using VAV systems.
• Fixed cogeneration control type "Generate to Full Capacity."
• Fixed auxiliary heating airflow for VAV forced flow skin heating.
• Fixed problem with optional ventilation supply air temperatures.
• Fixed the reheat temperature difference calculation when a leaving cooling coil temperature is specified.
• Added a "special character" check within the file.
• Added check to to verify glass area is less than wall area.
• Added prompt if .taf file already exists.
• Added feature allowing GBXML import to an exisitng file.
• Added feature allowing the optional ventilation heating supply temperature to be higher then the cooling supply air temperature when ventilation deck is room direct.
• Added an Equipment Summary Report containing Project Information, Alternative Comparisons, Monthly Utility Cost graphs, and Equipment Energy Consumption.
• Added a New File Based On feature allowing a user to create a new file by using an alternative from a different file as the base case.
• Added a an option to replace or leave custom library members when an archived file is opened and contains a library member with the same name as one stored in the lib7.db.
• Added an AND flag to the reset and lockout schedules.
• Added a Print Option for checksums reports allowing a user to preview only the rooms, zones, or systems of interest.
• Added feature to apply weather overrides to the entire year.
• Added Daylighting functionality.
• Added Reccessed Windows as an external shading type.
• Added Customer Charge field to the Utility Rate Structures.
• Modified the Ground Source and Water Source Heat Pump algorithms.
• Modified the way geothermal export files were created. They are now plant specific.
• Modified the psychrometric state points reports.
• Modified the ASHRAE standard 62 algorithm.
• Modified ambient modification curve for CVHF w\ Var. Freq.
• Modified thermal storage capacity and minimum operating temperature for GSHP library members.
• The Archiving a project feature was changed to include only the custom library members within the file
• A new Library Members report was created that lists out all of the library members used in the Trace project. It contains all of the custom and standard library members as well as the information contained within them.
• Room heating setpoint can be specified higher than the room cooling setpoint for design purposes only.

Release 4.0
TRACE^® 700 version 4.0 distributed on a CD to all active customers April 2001.

[Version 4.00.06B, T7up4006B.exe] 4/30/02
This update contained the following item:

• Fixed a problem with the calculation engine introduced in the 4.00.06 update. The problem was caused by modifications required to fix the plenum height\plenum load algorithm. The problem would only occur if a space was defined without a plenum.

[Version 4.00.06, T7up4006.exe] 3/25/02
This update contained the following items:

• Updated the Heating Design Output displayed in the checksum reports. Including the addition of 4 description fields that will match the Peak Total to the Selection Total.
• The "re-calculation" process has been modified, reducing the calculation time required to recalculate a file.
• Added a new flag that will cause the negative ventilation latent loads in Design to be reset to 0 by typing *VLAT* anywhere in the system description.
• Fixed a problem with the design heating conduction value for glass.
• Fixed specific problems with the calculated heating capacity of following systems: TRH, VAV w/baseboard Skin Heating, Changeover Bypass VAV, VRV, 2FDDVV,VRH.
• For all system types, the fan heat is no longer allowed to be a credit for any of the heating coils.
• The Optional Ventilation schedules are no longer ignored during the Design Simulation.
• Addition of a "FIXLIB" utility to assist with resynchronizing the library database following a client corruption.
• Revised the AIR-COOLED Chiller algorithm to allow for a more realistic amount of ambient relief . This will allow for increased accuracy of the actual energy consumption.
• Added code to stop the calc. when library members are missing.
• Fixed "Off (0%)" Thermal Storage Schedule.
• Fixed an issue preventing the program from using the entered design room cooling supply airflow (in VAV fan system). The program was using the calculated airflow value instead.
• Fixed an issue with the HEATING ONLY systems causing the program to crash during calculation.
• Fixed an issue that caused some 8760 simulations to use the reduced weather instead of the actual 8760 weather file.
• Fixed an issue with the room temperature drift calculation. The problem would occur with a VTCV system when untreated ROA deck air is brought into the room during hours when the space would normally require cooling.
• Fixed a problem with base utilities occurring when hourly loads were defined using volume or flowrate units. The program was ignoring the entering and leaving temperatures when the base utilty was not assigned to a plant.
• Fixed a problem with HOT thermal storage. It was not using the thermal storage schedule correctly.
• Fixed an AirChangesPerHour problem introduced by a previous fix to the ACH for infiltration. The ACH minimum value was being ignored.
• Enhancement to the "Computer Room Unit" humidity algorithm.
• Corrected a problem occuring when multiple plant-level heating circulation pumps were defined. The pumps were using the wrong full load rate.
• Fixed an issue with Base utilities using an energy type of water. The energy content was incorrectly calculated instead of the amt of water consumed.
• Corrected a problem with Schedule Reset Lockouts not working consistently.
• Corrected a report generation problem occurring with the bldg cool heat demand report.
• Fixed an issue preventing multiple thermal storage cooling plants from operating simultaneously.
• Fixed a thermal storage problem in which the tanks were incorrectly discharging when the bld load exceeded the capacity of cooling equipment. The tanks and the ice making chiller were attempting to satisfy the load even though they were scheduled to be "Charging" the ice tanks.
• Fixed a problem with Cogeneration output reporting.
• Fixed problems with the ASHRAE62 methodology and added the functionality to correct the VAV Minimum Stops that are below the ventilation requirement.

[Version 4.00.05, T7up4005.exe] 12/17/02
This update contained the following items:

• Enhanced calculation of SADB when CFM is entered.
• Addition of File Archive utility.
• Beta version of GBXML CAD file import utility.
• Shortcut to www.TRANECDS.com download center added to the HELP menu.
• Ability to select/print individual schedules from library.
• Enhanced network library synchronization functionality.
• Increased size of Internal and External shading type fields.
• Base Utility Descriptions added to Energy Consumption report.
• Addition of Variable Refrigerant Volume system type.
• Addition of Variable Refrigerant Volume equipment.
• Fixed problem with thermal storage "Satisfy Load" option
.
• Fixed problem with plenum temperature calculation occurring when Misc Sensible was assigned to "same as return air".
• Fixed problem with ASHRAE 62-89 outside air fraction reporting.
• Fixed problem with Template import.
• Fixed printing issues (Thermostat template) in Library editor.
• Fixed problem with infiltration units of air changes per hour.
• Fixed problem with Process Chilled water units on Equipment energy consumption report.
• Fixed problem with Misc Acc. when used with Cogen equipment.
• Fixed problem with Domestic Hot water reporting.
• Fixed problem with GLHEPRO output values.
• Fixed problem with Library Merge analysis weather process.
• Fixed problem with latent portion of ventilation component going negative in locations with low Summer Design wet bulb.
• Fixed problem with room level infiltration loads at time of space peak using Outdoor Air loads at time of coil peak.
• Fixed problem with DDVAV system: the design htg airflow was ignoring the user defined minimum airflow setting.
• Fixed reporting problem: Glass solar RA sensible value was switched with Glass conduction RA sensible value. This had no effect on coil capacities or airflows.
• Fixed problem recognizing file changes,introduced in version 4.00.04.
  

[Version 4.00.04, Internal Trane release only] 10/15/01
This was an Trane internal update only.

[Version 4.00.03, T7up4003.exe] 8/27/01
This update contained corrections/updates to the following items:

• Marked weather files from previous release as "standard"
• Fixed problem with Fan equipment EQ4201
• Added Reduced Year/Full Year warning-explanation messages
• Fixed problem with GLHEPRO GT1 export file format
• Fixed problem with Library Merge analysis weather process

[Version 4.00.02, T7up4002.exe] 8/20/01
This update contained corrections/updates to the following items:

• Increased the size of Pull-down menus
• Addition of System Summation utility (similar to T600sum)
• Addition of Load 700 version 3 schedule upgrade/conversion
• Addition of optional Load700 operating mode
• Addition of units to Rate Structure library
• Addition of file list to Help-About Screen
• Addition of ground loop temperature calculation (Based on Figure 3.13 of the IGHSPA manual)
• Addition of project file recovery utility
• Addition of template recover utility
• Addition of warning message when deleting alternatives
• Addition of messages explaining full vs reduced year
• Addition of many new international weather files
• Fixed problems with some weather files
• Fixed the format of the GLHEPRO export file
• Fixed problem with Load shedding
• Fixed problem with heating only system on eng. checks report
• Fixed problem with Ventilation airflow units
• Fixed problem with min Supply airflow (to be >= min vent.)
• Fixed problem with heat pump equipment operation schedules
• Fixed problem with system heading on Energy cons.output report
• Fixed problems with metric output reporting
• Fixed problems with metric conversion factors
• Fixed problems with metric economic calculations
• Fixed problem with AC/H calc on load/airflow summary
• Fixed problem with min. supply airflow calculation
• Fixed problem preventing operation outside United States
.
• Fixed problem with adding global templates
• Fixed problem with copying templates with multiple alternatives
• Fixed problem with Materials library import (Library editor)

[Version 4.00.01, T7up4001.exe] 5/16/2001
This update contained corrections/updates to the following items:

• Addition of "Copy Equipment"
• Addition of "Print Setup" to results viewer.
• Addition of Alt number to Entered values reports.
• Room Template assignment *template feature
• Load to TRACE conversion corrections.
• Template issues with a converted Load file.
• Cooling tower algorithm (based on DOE2.1A) was updated to match DOE 2.1E.
• Sizing of chillers when using process cooling loads.
• The Variable Volume Pump energy consumption calculation.
• Corrected minor problem with system level supply airflow calculation.
• System Exhaust airflow on the zone or system level with heat recovery.
• Simultaneously Base loading chillers and sequencing.
• Calendar usage during full year calculations.
• 8760 import.
• Problem with Calendar library.
• Allow Heat Recovery during Design calculation.
• Thermal Storage discharge optimization calculation with multiple chillers.
• Checksums number of People = 0 when attached to a "skin" system.
• Secondary heating pump was causing the simulation to fail.
• Economic calculation of only 1 alternative.
• Economic calculations.
• Room Assignment Tree report.
• Library Editor Schedules report.
• Air to Air HP w/ Demand Defrost equipment model.
• EQ1281-Secondary Unloading curve.
• Removed System.prn dependencies from calculations.

Trane, in offering the Trane Air Conditioning Economics (TRACE™ 700) computer program, accepts no responsibility or liability for the design of buildings or their support systems or for the accuracy of the economic analysis and the building and system air conditioning load data. The economic analysis and the building and system air conditioning load data are based on conventional economic and engineering principles, plus financial and engineering data supplied only by the program user. This TRACE 700 program is intended to be used as a comparative study of operating efficiencies and costs of alternative air conditioning systems. Trane further accepts no responsibility or liability for the suitability of the building air conditioning system in providing proper temperature control, humidity control, infiltration, air distribution and quiet operation.