Viewing HVAC Systems Control view resets Controller:MechanicalVentilation System Outdoor Air Method

[eringold]

Issue overview

Loading a model with a Controller:MechanicalVentilation with 'System Outdoor Air Method' set to 'Standard62.1VentilationRateProcedureWithLimit' and navigating to the HVAC Systems Control tab will cause that input to be reset.

Expected Behavior

Input should be retained.

Steps to Reproduce

1. Create and save a model with an AirLoopHVAC with OA System and Controller:MechanicalVentilation with System Outdoor Air Method set to 'Standard62.1VentilationRateProcedureWithLimit'.
2. Open model in OSApp, navigate to HVAC Systems tab, Control view. Model change indicator (asterisk by filename) will appear.
3. Save as, do file compare with original.

Possible Solution

Issue very similar to #379, therefore I suspect the fix will involve updating the addItem calls to ventilationCalcMethodComboBox:

OpenStudioApplication/src/openstudio_lib/HVACSystemsView.cpp

Lines 555 to 560 in ecfb734

	ventilationCalcMethodComboBox->setEnabled(false);
	ventilationCalcMethodComboBox->addItem("Zone Sum", "ZoneSum");
	ventilationCalcMethodComboBox->addItem("Ventilation Rate Procedure", "VentilationRateProcedure");
	ventilationCalcMethodComboBox->addItem("Indoor Air Quality Procedure", "IndoorAirQualityProcedure");
	ventilationCalcMethodComboBox->addItem("Proportional Control", "ProportionalControl");
	ventilationCalcMethodComboBox->setVisible(false);

Details

Environment

Some additional details about your environment for this issue (if relevant):

• Platform (Operating system, version): Window 10
• Version of OpenStudioApplication (if using an intermediate build, include SHA): 1.6.0

[jmarrec]

@eringold Are you still planning on providing a fix for this?