Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
The short answer is that you need to find out what you can about the actual building; from visual observation, asking facilities staff, and you mentioned elsewhere you have access to utility data. That can help you for example identify heating fuel.
Once you have an idea what is really in the building, you can use this hvac system tutorial to model HVAC systems. If you want to add something like PTAC or PTHP you would instead use the thermal zone tab instead of the HVAC Systems tab to directly add equipment to specific thermal zones.
