In the examplefiles you can see some examples about the chilled water.
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From: "Nick Long"<nickenergy124@xxxxxxxxx>;
Date: Sat, Dec 11, 2010 12:57 PM
To: "EnergyPlus_Support"<EnergyPlus_Support@xxxxxxxxxxxxxxx>;
Subject: [EnergyPlus_Support] Constant volume system
I want to model a chilled water based constant volume system for a five zone building (perimeter core zones). can a single AHU be connected to all the zones. Is there any example file or any template in EnergyPlus for such type of system.