I am an electrical engineer trying to develop a thermal model for zone as shown in equation below:

T_indoor(t+1) = a₁T_indoor(t) + a₂T_outdoor(t) + a₃Q_cooling(t) + a₄

where

Q_cooling(t) = m_air-flowc_air(T_supply - T_indoor)

To get the constants ( a₁, a₂, a₃, and a₄ ), I need to keep the T_supply constant and independently control m_air-flow i.e. airflow rate set-points to the zones.

By reading the Engineering reference and other answers on this portal, I understand that I have to use

1. AirTerminal:SingleDuct:Uncontrolled terminal for individual zones

2. A constant fan / constant volume zone conditioning component to control the flow and a setpoint manager to control the temperature of the air flowing into the space.

However, I keep getting many errors (such as Thermostat needed for zone even though the terminal is uncontrolled).

Are there any example IDF cases that I can refer or any place where I can get detailed instructions. Thanks.