You have defined equipment in this building that requires a boiler. This could include hot water coils at the air handler, zone terminal box heating coils, or in the case of a water source heat pump, a condenser water loop that requires a boiler. You are required to input a boiler and hot water pumps.
Go to the Plant level of the Building Tree, and in the Heating Hot Water Tab, input the boiler and associated hot water pumps for the HVAC system.
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