Questions and Answers for Rheem Marathon 50 gal. 4500 -Watt Tall Electric Water Heater with Lifetime Tank Warranty and 240 volt Connection

A:  Hi and thank you for your question. The Recommended Over Current Protection Copper (fuse or circuit breaker amperage rating) is 25. The Wire Size AWG Based on N.E.C. Table 310-16 (75°C) is 10.

A:  Hi RonL and thank you for your question. Vacuum relief valves are used in water heater/tank applications to automatically allow air to enter into the piping system to prevent vacuum conditions that could siphon the water from the system and damage water heater/tank equipment.

A:  Hi Robert and thank you for your question. No.

A:  Hi James, a thermal expansion tank would depend on what your incoming cold water pressure is. We recommend reaching out to a plumber to assist you with getting a water pressure reading and obtaining a thermal expansion tank if necessary.

A:  Blake, Thank you for your question. Yes the valve can be replaced.

A:  Hi RoseAnne and thank you for your question. The hot water connection is provided with a ¾” or 1” connection depending on the size of the unit. The cold water connection and the temperature and pressure relief valve are supplied with ¾” NPT connections.

A:  Ryan, Thank you for your question. The water heater would be female input and the fittings would be male.

A:  Nick, Thank you for your question. There would be no problem using a water softener.