When defining a Variable Refrigerant Flow (VRF) system, two components must be defined in the Building Tree. The Outdoor Condenser is defined at the System level of the tree, and each Indoor Evaporator unit is defined at the Zone level of the tree. Each Zone is required to have an Indoor unit defined.
To define the indoor unit, go to the Zone level of the Building Tree, and in the Mechanical tab, click on the Zonal unit. Select an Indoor unit that has the type specified as Variable Refrigerant Flow.
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