FT ScheduleDay to Schedule:Day:Hourly when possible; collapse Schedule:Day:Interval

[shorowit]

Pull request overview

Forward translate ScheduleDay to the simpler Schedule:Day:Hourly (instead of Schedule:Day:Interval) when the object has 24 hourly values.

This can result in significantly smaller IDF files for models that define schedules using 24 hourly values for days. For example, the IDF file produced by running this HPXML file would be reduced by ~750 lines.

Example of before (left) vs after (right):

Pull Request Author

• Model API Changes / Additions
• Any new or modified fields have been implemented in the EnergyPlus ForwardTranslator (and ReverseTranslator as appropriate)
• Model API methods are tested (in src/model/test)
• EnergyPlus ForwardTranslator Tests (in src/energyplus/Test)
• If a new object or method, added a test in NREL/OpenStudio-resources: Add Link
• If needed, added VersionTranslation rules for the objects (src/osversion/VersionTranslator.cpp)
• Verified that C# bindings built fine on Windows, partial classes used as needed, etc.
• All new and existing tests passes
• If methods have been deprecated, update rest of code to use the new methods

Labels:

• If change to an IDD file, add the label IDDChange
• If breaking existing API, add the label APIChange
• If deemed ready, add label Pull Request - Ready for CI so that CI builds your PR

Review Checklist

This will not be exhaustively relevant to every PR.

• Perform a Code Review on GitHub
• Code Style, strip trailing whitespace, etc.
• All related changes have been implemented: model changes, model tests, FT changes, FT tests, VersionTranslation, OS App
• Labeling is ok
• If defect, verify by running develop branch and reproducing defect, then running PR and reproducing fix
• If feature, test running new feature, try creative ways to break it
• CI status: all green or justified

[github-actions]

🧪 Test Results Dashboard

Summary

Metric	Value
Total Tests	4144
Passed	4143
Failed	1
Errors	0
Skipped	0
Success Rate	100.0%
Generated	2026-04-24 14:24:42 UTC

⚠️ Minor Issues Detected

🔍 Failed Tests (1 failures)

Linux-c++ (1 failures)

OpenStudioCLI.Classic.test_measure_manager.OpenStudioCLI.Classic.test_measure_manager (run1)

Error Message:

Failed

Full Details:

No details available

📊 Test Run Information

Run	XML File	Status
run1	results.xml	✅ Found
run3	results.xml	✅ Found
run2	results.xml	✅ Found