Is there a Cliff Notes version of how to get the 2022 Nautilus Panel to siphon/allow water to work in the faucets with an air lock condition?

This is assuming that you are trying to get water flowing inside the coach when you have the levers set in the “Dry Camping” positions and water doesn’t flow when you open a faucet or flush the toilet.

Yes, there is – authored by William Byerly Holt:

To Fix Nautilus Panel pump air lock.
1- Set panel for Winterize syphon;
2- hook up hose to city water supply, fill the hose with water, then connect to the water panel;
3- open a faucet;
4- turn on the hose and pump until water flows smoothly at faucet; you should hear a change in the pump sound once it is pumping water.
5- Turn off faucet and pump, then hose;
6- reset panel as needed;
7- Disconnect hose.
8- Tightly seal the hose connection with the provided cap.
Never set the White lever horizontal unless you are going to run the pump with a hose connected, making sure you have liquid in the hose at all times. Always fill a syphon hose before turning on the pump. Do not let the syphon hose go dry while the pump is running.
Make sure hose connection is TIGHT at panel.
Always put the cap on the panels hose input when not in use. Make sure it is tightly seated.
Make sure all levers are fully switched to their positions so they will not cross leak.
For a new system, or anytime the water tank goes completely empty, you should purge any air from the system. First, Power Fill the tank. Then switch the panel to Dry Camping and open each water tap individually for both Hot and Cold water, [faucets, toilet, inside/outside showers], until you get a good flow.

Which holding tank does my sink and shower drain to and what kind of “trap” does it have?

In the G/GL both the galley and bathroom sinks drain to the Gray tank and both sinks (and the shower) have “waterless” traps.

In the K/KL the galley sink drains to the Gray tank and the bathroom sink drains to the Black tank.

In the K/KL the galley sink (and the shower) have “waterless” traps and the bathroom sink has a “P” trap.

In all Travatos the shower drains to the Gray tank and has a “waterless” trap.

What should I know about tank heaters (a/k/a Heated Drainage)?

The truth about the Travato “HEATED DRAINAGE” option, a/k/a TANK HEATERS.

These will be ULTRAHEAT heat pads installed under the black and grey tanks and are used for drainage of the tanks to work in conjunction with bringing all the water lines inside the coach.   Since all of the plumbing in the 59K, as with the 59Gs (from 17.5 forward), is all above floor, the Truma will keep the majority of your water lines heated.

The pads are tested to effective to -11°F (-23.9°C).

Once powered “on”, the built-in sensor will power cycle the tank heat panel “on/off” based on the temperature of the tank’s fluid contents.  The sensor will cycle “on” once the fluids drop to approx. 44°F (6.7°C), heating up the contents up to approx. 64°F (17.8°C), then cycling “off” and allowing the volume of fluids to slowly loose temperature back down to approx. 44°F (6.7°C), limiting the amount of time they are drawing power.  There are many variables that will determine how long this temperature drop will take; amount of fluids present, ambient temperature, and most important is the rate of heat loss.  If you are looking to conserve energy, wait to vacate your waste holding tanks until they are almost full, larger volumes of fluid take longer to change in temperature than lower volumes do.

There is also a non-thermostatically controlled heating element that heats the elbow between the gray tank and the sewage drain outlet on the K and on the elbow going into the macerator pump on the G.

In addition – since the fresh water tank has been moved under the van in the GL/KL, there is a thermostatically controlled heating pad there.

Approximate power draw is relatively minor:

G/K (2 pads total at 5.8 amps = 11.6 amps + elbow heaters draw less than 1 amp = 12.6 amps at 13.5V ~ 175W)

GL/KL (3 pads total at 5.8 amps = 17.4 amps + elbow heaters draw less than 1 amp = 18.4 amps at 13.5V ~ 250W)

Note that this option is only addressing the tanks.  Even with the water lines inside of your coach you need to make sure that the temperatures surrounding the lines and connections remain above freezing or be winterized in order to prevent damage.  In addition, the macerator pump (G only) is not protected by this system but the parties providing me with this information do not consider this to be a serious risk.

ULTRAHEAT website:

Thanks to folks at WGO for providing me with this information.

(Revised February, 2020)

If your heating pads need to be reattached to your tanks, here is a list of adhesives approved by Ultraheat:

Heated Drainage Adhesive


My toilet isn’t holding water . . how do I set the seal?

One trick that’s worked for fellow owners is to make sure to close it quickly. Then, add some water. A thorough cleaning of the seal with a toilet brush every so often also helps.