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ECA Recent Update History

Version Changes

Version 4.0.35 [4/11/08]

  1. Made it so the maximum pipe coordinate in a horizontal trench is 99.

  2. Made it so Pressure Drop Per Loop is equal to Total Earth Loop Pressure Drop when the earth loop system has parallel flow.

Version 4.0.34 [4/7/08]

  1. Corrected the pipe length for a horizontal loop because it was too short.

  2. Made it so the runtime fraction cannot exceed 1. If the runtime fraction were greater than 1, the heat pump would be operating more than 744 hours per month, which is impossible.

Version 4.0.33 [2/22/08]

  1. Made it so the heat pump EER and COP are decreased if antifreeze is present in the closed loop circulation fluid.

Version 4.0.32 [12/4/07]

  1. Corrected a mistake in an error message that appears when the heating EDB is out of range.

Version 4.0.31 [10/26/07]

  1. Corrected errors in the calculation of the Reynolds number.

  2. Corrected errors in the calculation of the pressure drop per loop.

Version 4.0.29 [10/24/07]

  1. Made it so you can type a heat pump model in the Closed Loop System Data window.

  2. Made ECA compatible with Windows Vista.

  3. Made it so ECA will run properly on foreign versions of Windows that use the Double Byte Character Set, such as Korean, Chinese, and Japanese versions.

Version 4.0.28 [6/5/07]

  1. Updated the soil temperature, annual swing, and phase shift values in the weather database using ASHRAE's Design/Data Manual For Closed Loop Ground Coupled Heat Pump Systems.

Version 4.0.27 [5/23/07]

  1. Fixed an error in the Reynolds Number equation.

  2. Fixed another error in the midpoint load equation.

Version 4.0.26 [5/18/07]

  1. Fixed errors in the run time fraction equations.

Version 4.0.25 [5/16/07]

  1. Made it so changing the antifreeze properties will change the density and viscosity of the circulation fluid.

Version 4.0.24 [4/18/07]

  1. Corrected errors in the Water Furnace Envision data that I added recently.

  2. Corrected an error in the midpoint load equation.

  3. Made it so a warning message will appear if the Cooling EWT or Heating EWT is unacceptable.

  4. Made it so a warning message will appear if there are zero vertical bore holes.

Version 4.0.23 [2/26/07]

  1. Added data for all the remaining Water Furnace Envision models to the Heat Pumps Database.

  2. Made it so the default projects folder at startup will be the folder containing the last project that was opened.

  3. Added a Browse for Projects Folder button to the Project Explorer.

  4. Made it so the items in the Edit menu and the Window menu are enabled and disabled at the right times.

  5. Added a list of all the open windows to the Windows menu.

  6. Improved the appearance of the report headers.

Version 4.0.22 [12/15/06]

  1. Added data for several Water Furnace Envision models to the Heat Pumps Database.

  2. Stopped the program from crashing when an input is clicked on the Closed Loop System Data window.

  3. Stopped the program from crashing when the View Detailed Results button is clicked on the Closed Loop System Data window.

  4. Made it so the Man/Calc performance data on the Closed Loop System Data window will not change unless new data is entered.

  5. Changed the recommended Heating EWT value to 50.

Version 4.0.21 [8/18/06]

  1. Made minor updates to code and data processing for calculating heat pump capacity and efficiency.

  2. Updated calculations for number of pipes per trench for horizontal loops. Now more configurations including asymmetrical layouts are supported.

  3. Technical updates.

Version 4.0.20 [6/26/06]

  1. Added new Water Furnace series heat pumps. They are listed in a different category under "Water Furnace 2006".

  2. Various updates to accommodate new heat pumps and other issues.

Version 4.0.19 [5/26/05]

  1. Updated some Climate Master heat pumps to correct the valid ranges for GPM and CFM when selected. Note that you have to elect to overwrite the existing heat pump data during installation to get this heat pump data updated.

  2. Fixed bug which caused a division by zero error if Heating EWT or Cooling EWT temperatures were set equal to calculated soil temperatures. Now a warning message is printed recommending to change the temperature value instead.

Version 4.0.18 [5/25/05]

  1. Fixed problem with selecting a heat pump model in the Closed Loop System Data window. Previously in some cases heat pump data in the Rated or Adjust rows would be blank or incomplete when a heat pump was selected from the model list. Now data is always filled in completely in this window for the selected heat pump.

  2. Included new update for Check for Update utility.

  3. Technical updates.

Version 4.0.17 [3/24/05]

  1. Updated weather database to add more than a dozen new Canadian cities. Note that for current users the option must be checked to overwrite weather data during the update to install this new data.

  2. Fixed bug that did not allow the manual addition of a new weather city at the end of the alphabetical list of cities.

  3. Updated install to always add the weather database file during the first install of ECA on a given computer.

Version 4.0.16 [12/15/04]

  1. Fixed bug introduced in version 4.0.11 that could interfere with adding a new heat pump database name (or editing an existing heat pump).

  2. Added 4 new model TT series Climate Master heat pumps to the heat pump database.

  3. Technical updates.

Version 4.0.15 [11/2/04]

  1. Fixed bug that caused Error 13 when pressing the View Detailed Results button in the Closed Loop System Data window when some of the selected heat pump data was blank or 0.

  2. Added warning message if the entered or selected heating capacity is insufficient to meet heating load. Unlike this warning for cooling capacity this does not prevent calculations or printing, since backup electrical heating or similar could be used to make up the difference in heating capacity.

  3. Technical updates.

Version 4.0.14 [8/25/04]

  1. Added Copy License File button to the About ECA window. This allows selection of the drive (floppy disk drive, CD-ROM, etc.) where your ECA license file is saved, for easy license activation.

  2. Made it so selecting the Parallel loop layout changes the calculation of pressure drop through the system loop. Now pressure drop is divided among parallel loops, and remains as one single loop value when the series configuration is used.

  3. Fixed bug that caused actual loop length to not be recalculated after a preview or print if only a change in the loop layout was made.

  4. Added more detail to "invalid correction factor" error message that appears when air/water temperatures are out of range of the temperatures used in additional cooling factor and similar heat pump database tables. Now the valid range of temperatures is included in the message, allowing you to more easily check against the temperature values like EDB entered in your project.

Version 4.0.13 [8/6/04]

  1. Added feature that uses the new Check for Update utility. This utility, used by all Elite Software programs, can automatically check for updates and prompt you with the option to download an update from the Elite Software website before proceeding.

  2. Technical updates.

Version 4.0.12 [7/8/04]

  1. Added feature to import from an RHVAC 8 project. Previously this feature had only imported RHVAC for DOS projects, but now the latest Windows version of RHVAC is supported.

  2. Added selected Canadian cities to weather database.

  3. Updated project Help file, and made it so pressing F1 in a program window displays the help topic for that particular window.

  4. Fixed problem where adding a new city to the weather database would change the weather city opened in a previously saved project file. This is fixed now; when a saved project is opened the city name and index are checked to make sure they agree, and are adjusted if necessary.

  5. Technical updates.

Version 4.0.11 [7/1/04]

  1. Fixed problem with opening a project which had been saved with the Manually Adjusted checkbox selected in the Closed Loop System Data window.

  2. Technical updates.

Version 4.0.10 [2/14/03]

  1. Fixed a problem with the Autosave function. Previously it would not save changes you made to a window that was left open and otherwise unchanged (no selections of other windows or tabs) before the Autosave timer increment passed. Now all changes are saved during Autosave, including ones that are made to the currently selected window and/or tab.

  2. Corrected minor problem that would prompt you twice to save changes if you had changed the current project without saving, then selected to open a file from the file list at the bottom of the File menu. Now the prompt only appears once.

  3. Increased allowable inputs for heating load and cooling load to 5000000 Btuh. Also increased allowable input for circulating pump cost to $9999.00.

  4. Fixed problem that would not prompt to save the current project if you made changes and selected the Close (x) button to exit ECA. Now the prompt to save changes appears before ECA is closed.

  5. Technical updates.

Version 4.0.9 [2/3/03]

  1. Fixed problem that would not install the Database directory under the main program directory if the default program directory was not chosen during installation. Now the Database directory is installed correctly no matter where the program is installed on your computer.

Version 4.0.8 [11/15/02]

  1. Fixed problem during installation where error message would appear mentioning "OLE2.DLL is a bad image." While this did not create problems with the program itself, it was an annoyance and now it no longer appears.

  2. Made default choice during installation to not overwrite the existing heat pump database. Previously the default was set to overwrite these files.

  3. Updated the Custom Banner window to automatically read more license information for display in the banner.

  4. Corrected some units displayed in the Heat Pump Database window, e.g. changed MMBtuh to Btuh for heat pump capacity.

Version 4.0.7 [7/16/02]

  1. Made it so an error message concerning a correction factor no longer appears while entering data in the Closed Loop System Data window. This message should only appear when selecting a heat pump model.

  2. Prevented the appearance of Error 13 when a field was made blank in the Closed Loop System Data window.

Version 4.0.6 [1/11/02]

  1. Fixed problem which sometimes caused an error when File|Quick Print Reports was selected.

  2. Allowed the heat pump model name to be cleared in the Closed Loop System Data window.

  3. Technical updates.

Version 4.0.5 [6/21/01]

  1. Added more options for a slinky design. Now the user can enter slinky trench length or number of slinky trenches. The default slinky calculation can still be used as well.

  2. Updated text descriptions of EDB and EWB entries in the Closed Loop System Data window. These values are more clearly described as indoor coil entering air temperatures.

  3. Changed program behavior when the user chooses a heat pump model type. Previously, the model type was not allowed if the user-input system water flow and air flow fell outside the range for the chosen unit. Now when a unit is chosen, the water flow and air flow values are changed to the middle of the range allowed for that unit. This should make choosing a heat pump model a faster, smoother process.

  4. Allowed more standard pipe types to be used with a slinky configuration.

  5. Added units to heat pump model type selection window. Previously this window indicated "Heating Range" and "Cooling Range" but without units.

  6. Updated background colors used on some forms to make them more readable.

  7. Updated Sample.ecw and Autoload.ecw files to comply with new file format. The old file format can be used, but new slinky data will not be saved in those files. You should start a new project (using the new Autoload file if you wish) if you want to use the new slinky features. Note that if you want the new Autoload file to be installed with the latest version of ECA, you should move or delete Autoload.ecw from your Projects directory before installation.

  8. Technical updates.

Version 4.0.4 [3/15/00]

  1. Added 3 system files which are required to be installed to run the MicroHelp display tool for selecting heat pump model.

  2. Added the latest Florida Heat Pump databases. Now the latest models of FHP heat pumps can be used in ECA.

  3. Updated code to be sure that if a temporary file is detected that the user is prompted on opening that file and asked if they want to use or discard the temporary file.

  4. Fixed scrolling problem with the heat pump model display tool mentioned above. Before now, the selection would scroll up when a heat pump model was selected. This was unnecessary and distracting, so it has now been eliminated.

  5. Fixed the data ranges for air and water temperature and flow available for use with some Water Furnace heat pump models.

  6. Fixed a bug which caused a program error that would terminate the program if the user had entered an air or water temperature or flow value outside of the range allowed by the chosen heat pump and subsequently the user tried to open one of the available databases such as the soil database. Now the error no longer occurs.

  7. Eliminated the graying out of the toolbar selections of the main program screens such as General Project Data and Pressure Drop Data. Now these toolbar buttons can be used to toggle between these screens when they are open, which is the convention used by other Elite Software programs.

  8. Prohibited user manual typing of inputs for various items such as the heat pump model. All available models are available by selecting from a list in the drop down menu for this item.

  9. Fixed bug which did not allow Performance data to be displayed for Water Furnace or Climate Master data.

  10. Added feature to allow user to update their copy of ECA by inserting their license diskette in the A: drive, going to the Help menu in the program, choosing About ECA, and pressing [Shift]+[Ctrl]+L. This will bring up a dialog instruction box allowing you to copy the license file from the diskette and update your copy of ECA. This is a simple way to update the program from the Demo to the Active version.

  11. Increased allowable inputs of water flow rate for heat pump to 999 GPM, and air flow rate for heat pump to 99,999 CFM.

  12. Technical updates.

Version 4.0.3 [2/15/00]

  1. Updated install script to accommodate installation on Windows 2000.

  2. Reenabled text pasting with Ctrl+V and technical changes.

Version 4.0.2 [2/4/00]

  1. Updated projects directory saving and technical changes.

Version 4.0.1 [10/8/99]

  1. Updated icons and technical changes.

Version 4.0.0 Beta

  1. Beta testing and updates.

 
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