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I'm working on an existing IES VE model that will be used for Title 24 compliance. IES lists the following general guidance for errors:

I am receiving errors with room names. Can you offer any general guidance for the 3D model?

As the Title 24 module in the VE runs the CBECC-Com Ruleset & EnergyPlus simulation engine for compliance, there are a few limitations with regards to naming the rooms. Please note that these issues do not exist elsewhere in the VE:

1. The &, >, <, and $ symbols cannot be used.
2. No more than 10 rooms allowed per thermal zone.
3. Duplicate room names are not allowed. Each room and each zone must have a unique name.
4. Rooms on different floors cannot be on the same thermal zone.
5. The analysis will not be successful with any space or surface polygon (PolyLp in CBECC-Com) containing more than 120 vertices due to a limitation in the EnergyPlus simulation.
6. Self-shading surfaces (from ModelIT) are not accounted for in the Title 24 calculation.

Another common issue we see coming through to our technical support team is a mismatch on ventilation information. Some entries include 15 cfm/person, for example, but then the ventilation source is set as cfm/ft2. The CBECC ruleset will then check for the cfm/ft2 value, which is 0, and gives an error about not enough ventilation.

So my question is whether other IES VE users have encountered additional issues with translating to CBECC-Com and whether the above guidance holds? I'm specifically interested in #3, which I think may have been fixed by appending the room ID to the room name.

I'm working on an existing IES VE model that will be used for Title 24 compliance. IES lists the following general guidance for errors:

I am receiving errors with room names. Can you offer any general guidance for the 3D model?

As the Title 24 module in the VE runs the CBECC-Com Ruleset & EnergyPlus simulation engine for compliance, there are a few limitations with regards to naming the rooms. Please note that these issues do not exist elsewhere in the VE:

1. The &, >, <, and $ symbols cannot be used.
2. No more than 10 rooms allowed per thermal zone.
3. Duplicate room names are not allowed. Each room and each zone must have a unique name.
4. Rooms on different floors cannot be on the same thermal zone.
5. The analysis will not be successful with any space or surface polygon (PolyLp in CBECC-Com) containing more than 120 vertices due to a limitation in the EnergyPlus simulation.
6. Self-shading surfaces (from ModelIT) are not accounted for in the Title 24 calculation.

Another common issue we see coming through to our technical support team is a mismatch on ventilation information. Some entries include 15 cfm/person, for example, but then the ventilation source is set as cfm/ft2. The CBECC ruleset will then check for the cfm/ft2 value, which is 0, and gives an error about not enough ventilation.

So my question is whether other IES VE users have encountered additional issues with translating to CBECC-Com and whether the above guidance holds? I'm specifically interested in #3, which I think may have been fixed by appending the room ID to the room name.name; at least in the translated OSM file I looked at.