Disclaimer: I'm not a professional, nor do I play one on TV, so consult your owners manual and follow these instructions at your own risk.
Here's the forecast that had us gathering up our winterizing supplies.
If you have an older model, we did a similar set of instructions for our 2014 Plateau TS. Click on the link to go to that model: The Link.
1a) RV Antifreeze
Buy two of the gallon bottles of a non-toxic pink colored RV or Marine antifreeze.
Note: Andy recommended in a comment "buy antifreeze containing propylene glycol instead of of antifreeze with ethyl alcohol in it. It's better for the seals and it doesn't freeze as easily."1b) Phillips Head Screwdriver #2
Find one of these PH2 heads, hopefully not a rusty one made in China like ours. You will use it to remove the access door to the water heater.
Shurflo 244-3926 Elbow Adapter online.
2) Lighten Your Load (Drain your tanks)
Go empty your grey and black waste tanks. You know how to do this and no one wants to look at those pictures. Give the tanks an extra rinse for the last time this season.
3a) Find the fresh water tank drain on the passenger side just forward of the rear wheel (where the water is dripping out in this photo).
3e) Open the sink faucets to let the pressure out of both the hot and cold water lines.
4a) Open the panel under the fridge with your Phillips #2 screwdriver.
Note: these are about the only screws in the rig that aren't the Robertson square head screws commonplace in Canada.
From the Pleasure-Way Owner's Manual, page 28:
"Turn the bypass valves on the top red line, bottom blue line and the white center line to the closed position. (The handle is closed when it is turned 90 degrees to the water line.)
Open the valve that is located where the blue line coming up from the bottom and the red line coming down from the top are connected."
This photo shows how we set our valves for winterizing.
5a) Turn the latch and remove the Truma water heater door. Pull outward from the top. The bottom fits into slots in the frame and can be lifted out.
5b) Find the power switch in the upper right hand corner.
5f) Double check that you released the pressure in both hot and cold water lines by opening sink faucets before proceeding (remember 3e?). You do not want to get sprayed with water from a pressurized system.
5g) Okay, now go ahead and push up on the latch until it releases the yellow drain handle.
There is a video at the bottom of this post if that would help. Go ahead, scroll down, watch it now, and then come back to this step.
5l) Close up the "easy drain lever"
5m) Put the exterior cover back on the compartment and turn the latch to secure it.
7a) Disconnect the water line from the inlet side of your pump, just before the water strainer.
7c) Put the other end into a gallon jug of RV/Marine non-toxic antifreeze.
7e) Turn your water pump on.
8a) Run your sink faucet turned to hot until it runs pink, then again turned to cold until that runs pink.
8d) Repeat for the hot water.
8e) Run the shower until the water comes out pink.
8f) Run the cold water in the outside shower until that comes out pink.
8g) Repeat for the hot water.
8h) Gently pull out the screen from the city water connection.
8k) It is also a good time to check that your propane switch is turned off.
8m) Reattach the original fresh water supply hose fitting and clean-up any spills.
Save some anti-freeze for step 9c.
9a) Locate the low point drains under the van, forward of the fresh water tank.
9d) Pour 1/2 cup of anti-freeze into the drain in the bathroom sink.
Now that your plumbing is protected, it is time to insure your expensive batteries are safe from freezing. These batteries can be damaged if charged during freezing temperatures. Read more about this in your manual, especially when it comes time to exercise your generator.
9a) Open the back doors and find the Red Key Charge Line Disconnect on the left side, under the couch, just above the batteries.
9c) Remove any small batteries from flashlights, remote controls, or other items in your van so they don't leak over the winter.
10) Go reward yourself with the beverage of your choice.
11) Please leave a comment if this was helpful or if you notice anything that could be improved.