This is a usage guide for Heartland water heaters. It describes the operation and maintenance of water heaters.
This document serves as a usage guide for the Suburban water heater commonly installed in Heartland recreational vehicles. It explains that while the pictures depict a Suburban unit, operational steps are similar for Atwood water heaters found in other models.
The guide details two primary modes of operation: 110 Volt (electric) and LP Gas (propane). It provides instructions on how to turn the heater on safely, emphasizing the critical need to ensure the tank is full of water before activating electric heating elements to prevent burnout. Additionally, it covers routine maintenance tasks such as draining the tank for winterization and replacing the anode rod.
You can run in either mode or both at the same time for faster hot water recovery. If you are boondocking without shore power, you must use LP mode.
The water heater will lock out LP operation for safety. To clear the lockout, turn the switch off for 10 seconds and then turn it on again to retry.
Check that the bypass valve is in the normal operating position, open a faucet to ensure equal flow from cold and hot settings, or carefully open the temperature/pressure relief valve.