An assembled unit consisting of a fire pump, driver, controller, and accessories is called a Fire Pump Unit.

• A. Fire Pump System
• B. Fire Pump Unit
• C. Fire Pump Package
• D. Fire Pump Assembly

Answer: (B)

The essential idea is that this describes a single, factory-assembled package that contains all the necessary components to operate the pump. In NFPA 20 terminology, a Fire Pump Unit denotes an integrated package where the fire pump, its driver (motor or engine), the controller, and the required accessories are assembled together as one functional unit. This wording emphasizes that everything needed to operate the pump is included in one ready-to-install package.

Other terms don’t convey that same integrated, ready-to-run meaning. A Fire Pump System would imply the broader network—piping, valves, supply sources, alarms, and controls—beyond just the unit itself. A Fire Pump Package is plausible in everyday language but isn’t the formal term for the assembled, self-contained package described. A Fire Pump Assembly is too generic and could refer to various configurations that aren’t necessarily a complete, integrated unit with the driver and controller.

So the best fit for an assembled unit consisting of a fire pump, driver, controller, and accessories is Fire Pump Unit.