All electric water heaters and gas heaters that use electricity: The first issue to troubleshoot is a lack of power to the unit. A permit and inspections may also be required. Do I connect the incoming red wire to the “red” L2 on breaker A or to the “black” L1 on beaker B? It shows the elements of the circuit as simplified shapes, and also the power and signal connections in between the tools. Powered By Below, we've highlighted what size water heater you would need in our example of 6.5 GPM at a 63° F temperature rise. 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Rheem Water Heaters' Technical Service personnel are available to assist you (by telephone at (800) 432-8373 or via e-mail at techserv@rheem.com) in obtaining “in-warranty” service or to answer your questions about the operation or repair of your water heater during normal business hours (in … No Hot Water . EcoSmart Troubleshoot & Resolve can assist you with 24-hour support. Having hot water is as easy as turning on the faucet with EcoSmart tankless water heaters. Essential tankless electric water heaters offer continuous hot water quick and on demand for single point-of-use or multiple applications. Read honest and unbiased product reviews from our users. Once you have your total flow rate and the required temperature rise, you can find the right-size tankless water heater for your home. This electrical wiring project is about how to connect the wires from the circuit breakers to a EcoSmart 18 tankless water heater. Prevent electrical code violations and failed home inspections. Electrical Codes and Inspections: Installing or changing home electrical wiring should be done according to local and national electrical codes as adopted in Congress, Arizona. David, from the information you have provided, make sure to keep the wire sets from “circuit breaker A” separate from the wires from “circuit breaker B”. Wire Connections for a EcoSmart 18 Tankless Water Heater. I have a single 2-pole 60 amp going to my my sub-panel. More Rheem water heaters have been installed in homes than any other brand. Electrical wiring project guidelines for most any project you may choose to do. Estimated Time: Depends on the personal level experience, ability to work with tools, install electrical circuit wiring, and the available access to the project area. Get tips for resolving issues on your own. I am more concerned about the difference between what your house wiring currently supplies and what the heater requires. 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