I have a datacenter that consumes 18 kw. For cooling I created a loop for water: Also I created a loop for air: The simulation crash and gives me the following error: * Severe * AirLoopHVAC VC_DATACENTER has no air flow * ~~~ * Check flow rate inputs for components in this air loop and, * ~~~ * if autosized, check Sizing:Zone and Sizing:System objects and related inputs.