How to Winterize Your Cirrus 920: Step-by-Step Guide




Proper winterization protects your RV’s plumbing system from freezing temperatures and helps ensure everything is ready to go when camping season returns. Follow these steps to safely winterize your camper.


1. Drain the Plumbing System

This includes:

  • Hot water lines
  • Cold water lines
  • Freshwater tank
  • Gray tank
  • Black tank

Allow everything to drain completely. Once the system is empty, close all drains and valves.


2. Drain the Hot Water Tank


Inside the camper, locate the Alde relief valves under the dinette bench. Open the valves, let it drain completely, and then close it back up.


3. Blow Out the Water Lines (Recommended)


For extra protection, it’s a good idea to blow out the water lines to remove any remaining water trapped in the system.

  1. Connect an air compressor to the city water inlet.
  2. Set the compressor to no more than 40 PSI.
  3. Open one faucet or line at a time.
  4. Allow air to push through the system until no more water sprays out.

While this step isn’t as critical as draining and adding antifreeze, it helps prevent any leftover water from freezing and damaging your pipes.


4. Add RV Antifreeze

  1. Connect a short hose to the Nautilus system.
  2. Set the Nautilus panel to Winterize Mode.
  3. Ensure all faucets, fixtures, and drain valves are closed so the pump can create suction.
  4. Place the other end of the hose into a jug of RV antifreeze.
  5. Turn on the water pump to begin drawing antifreeze into the system.


5. Run Antifreeze Through All Fixtures


Start with the kitchen faucet. Run both the hot and cold sides until pink antifreeze appears.

Repeat this process with:

  • Bathroom sink
  • Shower
  • Exterior shower

This ensures antifreeze fully protects every water line.


6. Protect the Drains and Toilet


Finish the process by protecting the remaining plumbing components. Pour antifreeze down the shower drain, and flush the toilet to bring antifreeze into the bowl. 


Your Camper Is Ready for Winter


Once these steps are complete, your camper is fully winterized and ready for storage until your next adventure.


How to Dewinterize Your Cirrus 920: Step-by-Step Guide




As temperatures warm up and camping season approaches, it’s time to get your Cirrus 920 ready for the road. Dewinterizing your camper involves flushing out the RV antifreeze used during winterization and sanitizing your freshwater system so it’s safe and ready for use.

 

Follow the steps below to properly dewinterize your Cirrus 920.

 

1. Drain Any Remaining Antifreeze

 

This includes:

  • Hot water lines
  • Cold water lines
  • Freshwater tank
  • Gray tank
  • Black tank

Once the system is empty, close all drains and valves.


2. Prepare the System for Sanitizing

 

Once the system is drained, it’s time to sanitize the freshwater system. Attach a hose to the Nautilus panel and set it to Sanitize Mode.

 

3. Mix a Sanitizing Solution

 

Create a bleach solution to disinfect the freshwater system. A stronger bleach solution can be flushed through the system immediately. A weaker solution should sit in the tank longer to properly sanitize.

 

A commonly recommended ratio from RV industry experts such as Go RVing is: ¼ cup of bleach per 15 gallons of water. At this ratio, the sanitizing solution should remain in the system for about 12 hours to effectively sanitize the tank and plumbing.

 

4. Fill the Freshwater Tank with the Sanitizing Solution

 

Place the end of the hose into your sanitizing solution. Turn on the water pump to begin siphoning the solution into the system. 

 

Tip: Put all bleach concentrate into one sanitizing container for easier siphoning.

 

Once the solution begins entering the system, switch the Nautilus panel to Power Fill Mode to speed up filling the freshwater tank.

 

Tip: Monitor the tank level carefully to avoid overfilling.
 

When the tank is full, set the Nautilus panel to Dry Camping Mode.

 

5. Run the Solution Through All Fixtures

 

Run the solution through:

  • Kitchen sink
  • Bathroom sink
  • Interior shower
  • Outdoor shower

 

Be sure to run the solution through both the hot and cold water lines at each fixture.

 

6. Drain the System

 

This includes:

  • Hot water lines
  • Cold water lines
  • Freshwater tank
  • Gray tank
  • Black tank

Inside the camper, you’ll also need to drain the hot water tank:

  • Open the Alde relief valves located under the dinette bench.

 

After everything has completely drained, close all valves and drains.

 

7. Flush the System with Fresh Water

 

Refill the freshwater tank with clean water using Powerfill mode. Then, switch to Dry Camping mode and turn on the water pump.

 

Next, run fresh water through all faucets and fixtures, again using both hot and cold lines.

 

Tip: You may need to repeat the fill-and-flush process several times until any bleach smell is gone.

 

8. Final Drain

 

Drain the system one last time and turn off the water pump.

 

Your Camper Is Ready for the Camping Season

With your freshwater system clean and operational, you can focus on the fun part, planning your next adventure.