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Rhvac Version 10 Recent Update History

Version Changes

3/6/2025 10.01.45

  1. On the dropdown help window for the Reference City input on the Design Conditions tab of the General Project Window, made it so the city name column is wider in order to accommodate some of the long city names in the list. Did the same for the City input's dropdown help window on the Weather Data window.

  2. Fixed a problem with the new weather database introduced in version 10.01.42, where the winter wet bulb temperatures for the new city records were all zero. The winter wet bulb temperature is supposed to be a value that equates to 80% relative humidity, for compatibility with Manual J. The weather database file in this update has all of the winter wet bulb values set accordingly, but even if you choose not to overwrite the weather database during setup, the wet bulb temperatures for all cities will be calculated and assigned automatically when you first open this version of Rhvac.

1/17/2025 10.01.42

  1. Updated the weather database to have the data from the latest edition of Manual J's Table 1A and Table 1B. Formerly the weather database had 2,564 cities, but this new one has 4,262 cities. Data from several existing cities in the old database that had a source other than ACCA MJ8 are included in the new database, as well as monthly bin data in some cities for use in Elite's Energy Audit program.

  2. Made it so if you have a window that faces NE or NW and has a negative offset and a positive projection, the part of the window that is shaded and treated as if it were facing north is equal to the absolute value of the offset you entered. For example, a NE facing 3 ft. wide by 4 ft. high window with a positive projection and an offset of -2 will be considered half shaded. This change affects both the normal load on the window as well as the hourly load calculated when determining AED status.

10/31/2024 10.01.41

  1. Corrected the RPER ACCA Design Review Form report that was partially changed from the 1.01 version of that form to version 2 of that form in the previous update. The report is now back to the original 1.01 version.

8/5/2024 10.01.39

  1. Fixed a bug on the bottom of the second page of the Energy Star report, where if you had entered any room names or room CFM values in the Override column for those items on the Energy Star Form Data window, the override values were being ignored.

  2. Updated the Energy Star report to be based on Revision 13 of the National HVAC Design Report form, instead of revision 12.

6/25/2024 10.01.35 (Test Version)

  1. Increased the maximum allowed sensible and latent equipment load input values from one million to one hundred million.

5/8/2024 10.01.31

  1. Fixed a problem in the "RPER 1.01 ACCA Design Review Form Data" report, where if you entered a heating model type that was a heat pump of any kind, and your cooling model number was blank the heating equipment model number would also be blank (unless you entered a model number in the Override column).

  2. Fixed a problem on the Manual S Performance Data report, where if you had selected to include the interpolation grid the "Entered Interpolation Data" text above it was too close.

  3. Fixed a bug in Drawing Board, where the Paste Glass function did not copy the length of the copied glass (the Glass Width property).

  4. Fixed a bug in Graphic Manual D Ductsize and the Tabular Manual D Ductsize window, where if you used return fittings from Group 6.1, which includes fittings 6-A through 6-ET, the "(trunk)" fitting equivalent length was being determined using the wrong ratio for CFM1/CFM2. The CFM1 value in that ratio was incorrectly coming from the trunk airflow, instead of the branch airflow. Now, the program determines CFM1 by subtracting the trunk airflow from the downstream outlet airflow (CFM2).

  5. Fixed a bug that was happening on the Room object, where if you opened the "Roof/Ceiling Slope Calculator" by clicking the list item in the dropdown help for the "Roof Slope (Intrinsic)" property, when you closed that dialog it would reappear once, forcing you to close it again. Fixed the same problem with the Roof object and its "Roof Slope" property.

3/5/2024 10.01.30

  1. Fixed a problem on the Energy Star report on item 2.4, where the checkboxes partially overlapped the words that go with them (Supply, Exhaust, and Balanced).

  2. On the "RPER 1.01 ACCA Design Review Form Data" report, changed the text for cooling type and heating type to be simply the text you entered. Formerly, it would modify the text you entered to ensure that it was not too long to fit in the provided space on the form.

  3. Fixed a problem in Graphic Manual D Ductsize, so that if you had a duct object on a drawing that no longer had a text object associated with it, the next time you reopen the drawing the text will be restored.

  4. Fixed a bug in Drawing Board, where the dimension text object that goes with a Window object on the drawing could get deleted, and would not be restored. Now the program will restore the Window's text object upon opening the drawing if it has been deleted.

  5. Fixed a bug where the program could lock up if used on a monitor with a very high screen resolution.

  6. Made it so the dimension text that goes with a window object on Drawing Board is positioned a little farther away from the window object.

2/16/2024 10.01.29 TEST VERSION

  1. On the Elite CSV Converter window, added a third column called, "More Info," to the dropdown help for the Code inputs in the mapping grid, which tells you things such as which field to assign a code to.

2/14/2024 10.01.27 TEST VERSION

  1. Corrected a problem when opening a CSV file on the Elite CSV Converter window, where if you converted the XLSX file to CSV from within the Excel program, it was possible for strange characters to show up at the beginning of the first column header.

2/13/2024 10.01.26 TEST VERSION

  1. Fixed a bug in the Energy Star report on the Date text, where if you entered a short date format for the project date on General Project Data, the text you entered could have some characters removed.

  2. Added a label near the upper left of the Winter Infiltration dialog that shows the area of the current system. This label makes it more convenient to see the system area so that you can know which column of values to use when selecting an option for the Manual J Air Changes Per Hour Method option. Did the same for the Summer Infiltration dialog.

  3. Saved the location of files used for various copy and paste features from being under the Elite Software Data folder under Public Documents to the current user's local temporary folder for Rhvac 10 underneath the AppData folder. This was done to prevent any potential interference between users regarding copy and paste operations.

  4. Fixed a bug where if you changed report selections on the Select Reports window and then clicked the Preview button or Print button at the bottom of the window, the project was incorrectly not marked as needing to be saved as a result of the changes you made.

  5. On the Project report, made it so if the following inputs on General Project Data window are blank, then they are not printed on the report: Project Title, Project Comment, Client Comment, Company Comment. Formerly, if you checked the "include comment" box for any of the three comment inputs, it would print the line even if the corresponding comment was blank.

  6. Updated the Energy Star report to be based on Revision 12 of the National HVAC Design Report form, instead of revision 11.

  7. Fixed a bug in Drawing Board, where if you had a wall that you divided into 2 walls, and set one wall to be interior, and you kept the walls perfectly in line with each other, it was possible for one of the walls to be drawn improperly, where it covered up the other wall.

  8. Fixed a bug in Drawing Board, where if you selected multiple ducts and then clicked the button for the Fittings property, and then set the fittings and clicked OK on the Fittings dialog, the ducts you selected would all be unselected after changing that property.

  9. Made the Global Material Change dialog vertically resizable so that you can make the room list larger. Did the same thing for the Global Dimension Change dialog.

  10. Fixed a bug in Drawing Board, where if you entered the System Number for a room to be higher than the number of systems, then the dropdown help for the intrinsic floor and roof STD and WTD properties would show a room temperature of zero, and the numbers in the dropdown help would all be bogus. Now if you enter a system number that is higher than the number of systems, the STD and WTD dropdown help values will be based on the indoor temperatures of system 1.

  11. Added a new window called, "Elite CSV Converter," which lets you get data from a file from AHRI in order to create an equipment database file from it. You can open it from the Tools menu or the Elite Software section of the Windows Start menu.

  12. In the popup menu that opens when you right click the toolbar in Drawing Board, added the "Reset All Drawing Board Toolbars/Windows" item that has also been underneath the Drawing Board Tools menu.

  13. Changed the text of the shortcut for Rhvac Online installed in the setup to say, "Rhvac Online Trial Version," to make it clear that a purchase of Rhvac for Windows does not include a subscription to Rhvac Online.

10/12/2023 10.01.18

  1. Fixed a bug in Drawing Board that would happen if you first printed reports, and then selected a Room object on the drawing, and opened the Radiant Floor Properties dialog by clicking the button beside the "Radiant Floor Heat Output" property, and then clicked OK on that dialog, and then refreshed the reports without making any other drawing changes, any changes you made on the dialog would not immediately show up on the Radiant Floor report.

  2. On the System 1 Room Load Summary report, made changes for when the room quantity is greater than 1. The room name now includes the quantity in parenthesis if greater than 1. And the area, sensible loss, etc., that are shown in the columns on the right are now multiplied by the room quantity. Made the same kinds of changes to the Load Preview window and report, so that the appropriate column values are now multiplied by the room quantity.

  3. Fixed a bug on the Tabular Manual D Ductsize window, where if you entered a duct system in the Other Ducts section and under the Supply arrow, the device pressure losses from system 1 would incorrectly be added to the system's cumulative losses.

7/12/2023 10.01.17

  1. On the ACCA Form 310 Data window, fixed a bug where item 4.17 did not get filled in automatically.

  2. Fixed a bug where if you added a custom glass on the Glass Material dialog, and then closed that window and typed in the construction code of the new custom glass into the glass material input on Room Data, the new material code would not be found, and the U-value and SHGC would not automatically get filled in. Did the same thing for other types of materials.

  3. Fixed a bug on the Energy Star form report, where the 17 and 47 degree air source heat pump capacities shown in item 4.12 were shown in units of Btuh instead of kBtuh.

  4. Fixed a bug when importing some version 8 project files that have a drawing, where after converting to version 10 it was possible for some windows and doors to show up with a reduced width.

6/1/2023 10.01.16

  1. On the Set Multiple Duct Properties dialog for ducts on the Drawing Board window, added the Register Sizing property to the list of properties, as long as there is at least one main trunk on the drawing.

  2. Also on the Set Multiple Duct Properties dialog, added a "Update Duct Default Scenario or DDS File..." button that lets you update any of the default scenarios in the current drawing, and lets you update any of your DDS files.

  3. Also on the Set Multiple Duct Properties dialog, added "Supply Main Trunks" and "Return Main Trunks" to the popup menu that displays when you click the Mark All button.

  4. Added six Duct Default Scenario files to the list of DDS files installed during the setup. These files contain duct design guidance from NCI, National Comfort Institute.

5/5/2023 10.01.9

  1. Added the list of device pressure losses to the Tabular Manual D Ductsize Data report, right after the line that lists their sum.

  2. Added the status of the design friction rate (OK or High) to the Tabular Manual D Ductsize Data report's line that shows the design friction rate.

  3. In the Model View program that is included with Rhvac, for new models that you add to a database, made it so you do not have to tab through each input on the popup Air Conditioners window in order to prevent there from being null values for some fields, which could prevent the Find HVAC Equipment window in Rhvac, Chvac, and Energy Audit from being able to list that model. Made the same change to the other popup windows for editing newly added models of the other types.

5/2/2023 10.01.8

  1. Fixed a bug in the setup for a first time installation of Rhvac 10, where the filename in the "Copy this file" input on the New Projects tab of the Rhvac Options window was set to "Autoload Rhvac 10.rh9" instead of the correct filename, "Autoload Rhvac 10.r10".

  2. Fixed a bug that developed in the previous update on the Find HVAC Equipment window, where the Indoor Model input was sometimes grayed out when it should be enabled.

  3. Fixed a bug in selecting cooling equipment with the Find HVAC Equipment window, where if the selected model in the database had adjusted sensible and adjusted latent capacity values filled in, the "Adjusted Total Capacity (Optional)" row in the grid would not be assigned.

3/31/2023 10.01.7

  1. Fixed a bug if you had the Match Zone Color property set to True for a supply duct on the Drawing Board window, it would not make the duct match the color of the zone.

  2. Added fields for SEER2, EER2, HSPF2, Sensible Capacity, Latent Capacity, Adjusted Sensible Capacity, and Adjusted Latent Capacity to the manufacturer's equipment databases. These fields are added upon selecting a database file on the Find HVAC Equipment window, or upon opening a database in the Model View program. Added columns for these fields to the Find HVAC Equipment window. These new values, if present in a database, get copied to the inputs on the Equipment tab of the System Data window when you select a model. Added inputs for all of these new fields to the popup windows in the Model View program.

  3. Added back the ability to select equipment while on the System Data window (as in Rhvac 9), so that it opens the Find HVAC Equipment window and applies your multipliers to fill in the min and max capacity inputs. In the System Data window's toolbar, click the More item to display a menu with "Select Cooling Equipment" and "Select Heating Equipment" items.

  4. Added the Multiplers button and popup window back to the Find HVAC Equipment window (as in Rhvac 9).

  5. Made it so instead of just one warning there are two possible warnings about having no duct surface area for a project with ducts on the drawing (or Tabular Manual D Ductsize window), and the "Update SA from [T]MDD" input on the Duct Load Factors dialog is set to "MDD" or "TMDD." The first warning tells you that you need to set the "Duct Load Factor Scenario" property for one or more ducts in the system to be a valid scenario number, for the case when there are ducts in the system. The other warning tells you that you have no ducts in the system, for the case when there are no ducts in the system.

  6. Made it so if you try to open a database on the Find HVAC Equipment window that is currently in use by another program (such as Model View), a message box is displayed that says that the file is in use.

  7. Fixed a bug where the Copy Glass, Paste Glass, Copy Door, and Paste Door functions in the right click popup menu for glass and door objects on the drawing did not work.

3/24/2023 10.01.4

  1. Fixed a bug where if you did not have Rhvac 9 installed, the dropdown help for the Item Name column on the Equipment Cooling Loads window would not include the list of items, even though the EquipmentLoads.txt file was existing in the correct folder.

3/14/2023 10.01.3

  1. Fixed a bug where if you had Rhvac 9 installed and then installed Rhvac 10.01.2, the objects from the Rhvac 9 Drawing Objects catalog in the Drawing Board window of Rhvac 9 would not work until you reinstalled Rhvac 9.

3/9/2023 10.01.2

  1. Fixed a bug where if you let the program check for an update upon startup, it would check for an update of Rhvac version 9, not 10.

  2. Fixed a bug in Drawing Board, where the "Add Default Floor to New Rooms" and "Add Default Roof to New Rooms" toggle buttons were being ignored for new Room objects.

  3. Fixed a problem where the grab handle in the bottom right corner of some of the resizable windows was missing. These grab handles with the diagonal lines are simply used to make it slightly easier to grab the corner of the window for resizing.

3/7/2023 10.01.1

  1. Fixed a bug that developed in version 10.00.36, where the Manual S Performance Data window would not open.

3/3/2023 10.01.0 (Official Release)

  1. Technical changes.

3/2/2023 10.00.37 (Test Version)

  1. Fixed some bugs when importing Drawing Board projects from previous versions of Rhvac.

2/28/2023 10.00.36 (Test Version)

  1. Fixed a bug where the EquipmentLoads.txt file for generating the dropdown help of the Item Name column on the Equipment Cooling Loads window was not being installed.

  2. Fixed a bug in Drawing Board, where if you had both Rhvac 9 and 10 installed, the right click popup menu for the Room object would not include all objects. This bug would happen in whichever version was not the most recent version you installed.

2/22/2023 10.00.35 (Test Version)

  1. Fixed several problems in the ACCA Form 310 Data window and the corresponding report. Also made fundamental changes regarding how that window's inputs are saved.

2/20/2023 10.00.32 (Test Version)

  1. Fixed a bug where the new "Show Flow" property for trunk objects on the Drawing Board window was missing.

  2. Made several more changes to the F1 help to update it to the current version.

2/15/2023 10.00.31 (Test Version)

  1. Technical changes.

2/10/2023 10.00.29 (Test Version)

  1. Added a "Show Flow" property to each kind of trunk object.

2/9/2023 10.00.28 (Test Version)

  1. On the Create REScheck File dialog, made it so the REScheck Folder box defaults to being the same folder as the current project, unless an installation of REScheck is detected.

  2. Removed the extraneous menu item entries in the "Tools | AHRI Links" menu.

  3. Modified the dropdown help for some inputs on the Duct Load Factors dialog so that all the items in the list are visible.

  4. Added inputs to let you export to EnergyPro version 9 to the EnergyPro Export dialog.

  5. On the frame wall tab of the Wall Material dialog, added a metal wall category. Also added four metal wall materials into that category.

1/31/2023 10.00.25 (Test Version)

  1. Technical changes.

1/31/2023 10.00.24 (Test Version)

  1. Updated more of the help file.

  2. Technical changes.

1/30/2023 10.00.22 (Test Version)

  1. Corrected some links to the F1 help in the Proposal Maker window.

1/27/2023 10.00.21 (Test Version)

  1. Corrected some problems in the Open Previous Version function, so that it is able to import a project from every version of the program since Rhvac 6.08.

1/18/2023 10.00.17 (Test Version)

  1. Made it so you can have an overhang offset that is negative, to account for overhangs that slope downward.

1/17/2023 10.00.15 (Test Version)

  1. Technical changes.

  2. Made more changes to the ACCA Form 310 Data window.

1/16/2023 10.00.6 (Test Version)

  1. Technical changes.

1/12/2023 10.00.4 (Test Version)

  1. Added inputs for SEER2, EER2 and HSPF2 in the cooling and heating equipment inputs. Modified the reports to accommodate them when filled in.

  2. Changed the splash window picture.

1/10/2023 10.00.2 (Test Version)

  1. Technical changes.

 
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