Water Heater Controls Diagram. Relay pin diagram a 9v12v relay is utilized in the circuit to turn on and off the water heater. Here is a list of the parts of a water heater and their function common to most gas propane and electric tank type water heaters 1.
The word hot may or may not be present on the control knob. In our wiring tutorial we have used 6 gauge wire for each hot wire. The upper electrical control is a combination 59t spdt regulating thermostat and a 66t dpst manual reset limiting thermostat.
Rheem water heater manuals.
Furthermore this thermostat wiring diagram is specifically for a system with two transformers. That is a basic honeywell thermostat wiring diagram for a single stage heat pump. Most hot water heaters are on a 30 amp two pole breaker. Mounting the wv8840a on the water heater tank.