Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |  |
The problem is that the spaces in your thermal zone (ELC ROOM 1) are separated from each other. 
If you are going to combine spaces into a single thermal zone, they must be adjacent to each other (ie. share a common wall or floor or ceiling). This is discussed further in this video here: https://youtu.be/9vSApboNv8g
I would recommend each of these spaces associated with thermal zone ELC ROOM 1 (Space 261, Space 174, etc.) be assigned to its own unique thermal zone.
