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 latest 59Gs, 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.
Power draw is relatively minor.
G = 8.6 Amps.
K = 9.3 Amps, including 0.7 amps for a heater for the drain tube. NOTE: Unlike the heat pads
described above this drain tube heater is not thermostatically controlled.
Note that this option is only addressing the holding 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: http://www.annodindustries.com/shop/rv-oem-replacement-parts/th-718-oem-holding-tank-heater
Thanks to folks at WGO and Lichtsinn Motors for providing me with this information.
If your heating pads need to be reattached to your tanks, here is a list of adhesives approved by Ultraheat: