Does FluidFlow have the capability to add specific models of Chillers?

It really depends on what data you have available. The software doesn't have a database of manufacturer's chiller units however, users usually define chillers using HEX nodes or indeed Kv nodes where you can define the pressure loss relationship for the chiller as a function of flow rate whilst also defining the heat exchange at the chiller unit.

For example, in the system below, the user has defined the Airedale chiller data using a Kv node. The chiller has 700 kW of heat transfer and a pressure loss relationship of 29.8 kPa at 33.4 l/s. The software will automatically scale the pressure loss based on the defined relationship.