Easy to Operate

1. When the outside temperature is near freezing, simply turn "ON" the holding tank heater's 13.5 VDC power switch and/or plug in the 120 VAC power cord.
2. There must be liquid in the holding tank, pipes, and elbows when UltraHeat® heaters are on.
3. The tank heater immediately starts protecting your holding tank from freezing up.
4. The thermostat on the heater will turn "ON" the tank heater as soon as the tank temperature drops in the tank to 44°F (7°C). The tank heater immediately starts protecting your holding tank. When the temperature in the holding tank rises to 64°F (18°C), the tank heater will automatically turn "OFF"
5. If using a generator or other power source which exceeds the heaters voltage requirements turn the heater "OFF" and /or unplug the power cord to avoid eventual damage to the heater's thermostat.
6. Turn the power switch "OFF" (and/or unplug the power cord on the Dual Voltage Model when the outside temperature is above freezing.
7. Failure to follow these operating instructions could result in the voiding of your warranty.

Note: Tank Heaters are thermostatically controlled. This product has been tested and is designed to be used as a heating device for RV fresh water supply and waste water holding tanks made of standard grade plastics. UltraHeat, Inc. assumes no liability for any usage of product for purpose other than what is consistent with the original design and testing.