The Nautilus P2.5 system is used in 2021 and 2022 TAB CS-S and S models to simplify water management by centralizing all functions in one panel. Below is an overview of its components, functions, and modes. The Barefoot (2023-2025) also uses the Nautilus P2.5.




Step 1: Understanding the Nautilus Panel Components

The front panel of the Nautilus system contains the following key components:

  • Sanitize & Winterize Inlet – Used to pull fluid from a container or bucket into the freshwater tank.
  • City Water Inlet – Connects to city water either at a campground or home.
  • Mode Selection Knobs – Adjusts the system’s settings for different functions.
  • Water Pump Switch – Turns on the water pump, identical to the interior pump switch.
  • Coax Connection for Interior TV – The only active port is labeled “Cable”; the other two are unused.

Step 2: Nautilus Panel Modes

1. Sanitize Mode

  • Use this mode when sanitizing or de-winterizing your camper.
  • Connect a container with a bleach solution to the Sanitize & Winterize inlet.
  • Turn on the water pump to start siphoning the fluid into the freshwater tank.

2. Tank Fill Mode

  • Used to fill the freshwater tank from a city water source.
  • Connect the city water hose to the City Water Inlet.
  • Do not turn on the pump—this mode relies on city water pressure.
  • Always use an inline water pressure regulator (included in the welcome pack).

3. Dry Camp Mode

  • Use this mode when camping without a city water connection.
  • Pulls water from the freshwater tank and sends it to faucets and fixtures.
  • Turn on the water pump to supply water to your system.

4. Winterize Mode

  • Used only during the winterization process to run antifreeze through the system.
  • Connect a jug of RV antifreeze to the Sanitize & Winterize Inlet.
  • Refer to the Nautilus manual for full winterization instructions.

5. City Water Mode

  • Used when connected to a city water source for direct water supply.
  • The knobs are in the same position as Winterize Mode, but water is supplied via the City Water Inlet.
  • Water flows directly to faucets and fixtures without using the pump.

Note: The hot water heater bypass valve is located in the same compartment as the Nautilus panel.

Your Nautilus System is Now Set Up!

If you have any further questions, contact tech@nucamprv.com. 

 

Video link: Nautilus P 2.5 Overview