Issue overview

User file crashes with VariableRefrigerantFlow:FluidTemperatureControl and Fan:SystemModel.

Crash occurs here trying to access fan data without checking fan type. There are some other similar places that need fixing as well - search on FanIndex.

Also, some documentation issues:

1. I/O Ref 1.30.15 vrf terminal - Fan type description does not reflect new fan type or fan type requirements of new VRF type. This is clear in the idd file.

2. Getting weird errors. New model requires the terminal to reference new coil models but error message is not at all clear and manual makes not mention of this for VRF unit or terminal. In the coil documention it mentions applicability which led me in the right direction but it could be worded better. Suggestion: Clean up error messages, and move Energy+.idd discussion of vrf terminal coil fields into the manual for the terminal object.

Workaround

Use Fan:VariableVolume instead.

Details

Some additional details for this issue (if relevant):

• Platform (Operating system, version)
• Version of EnergyPlus - tested with current version on branch for PTAC hot water heating coil undersized for ventilation load #6079, 8642695
• Direct e-mail, July 21, MK

Checklist

Add to this list or remove from it as applicable. This is a simple templated set of guidelines.

• Defect file added EnergyPlusDevSupport\DefectFiles
• Ticket added to Pivotal for defect (development team task)
• Pull request created (the pull request will have additional tasks related to reviewing changes that fix this defect)