If you are looking for a high-quality tankless water heater, the Rheem RTEX 27 is an excellent choice. This model is designed to provide reliable hot water on demand while consuming less energy than traditional water heaters. One important aspect of the RTEX 27 is the wiring diagram, which can help you install the unit properly and avoid any potential issues. In this article, we will provide a detailed guide to the wiring diagram for the Rheem RTEX 27.
Overview of the Rheem RTEX 27
The Rheem RTEX 27 is a powerful and efficient tankless water heater that can provide up to 5.3 gallons of hot water per minute. It is designed to be energy-efficient and easy to install, with a compact size that allows for flexible installation options. The RTEX 27 features digital temperature control and self-modulating technology, which allows it to adjust its power consumption based on the demand for hot water. The unit also comes with a 3-year warranty for added peace of mind.
Wiring Diagram for the Rheem RTEX 27
The wiring diagram for the Rheem RTEX 27 is an important reference tool that can help you install the unit correctly and ensure that it operates safely and efficiently. The diagram provides a visual representation of the wiring connections for the various components of the unit, including the heating elements, control board, and temperature sensors. Here is a breakdown of each component and its wiring connections:
Heating Elements
The Rheem RTEX 27 features two heating elements, each of which requires a separate circuit. The wiring for each heating element is as follows:
| Heating Element | Wire Color | Connection Location |
|---|---|---|
| Element 1 | Red | Terminal 2A |
| Element 1 | Black | Terminal 1B |
| Element 2 | Red | Terminal 3A |
| Element 2 | Black | Terminal 2B |
Make sure that the wiring for each heating element is connected to the correct terminal on the control board to avoid any electrical issues.
Control Board
The control board is the central component of the Rheem RTEX 27 and is responsible for regulating the temperature and power consumption of the unit. The wiring connections for the control board are as follows:
| Wire Color | Connection Location |
|---|---|
| Red | Terminal 3B (power input) |
| Black | Terminal 1A (ground) |
| Green | Terminal 2C (temperature sensor ground) |
| White | Terminal 2D (temperature sensor input) |
Make sure that the connections for the control board are secure and properly grounded to avoid any electrical issues.
Temperature Sensors
The Rheem RTEX 27 features two temperature sensors, which are used to monitor and regulate the temperature of the water. The wiring connections for the temperature sensors are as follows:
| Wire Color | Connection Location |
|---|---|
| Green | Terminal 2C (sensor ground) |
| White | Terminal 2D (sensor input) |
Make sure that the temperature sensors are properly installed and connected to the control board to ensure accurate temperature regulation.
Frequently Asked Questions
What is the electrical requirement for the Rheem RTEX 27?
The Rheem RTEX 27 requires a dedicated 240V/208V circuit with a minimum amperage of 112.5/90.0 amps. It is important to consult a licensed electrician to ensure that your electrical system can support the unit’s electrical requirements.
Can the Rheem RTEX 27 be installed outdoors?
Yes, the Rheem RTEX 27 can be installed outdoors as long as it is protected from freezing temperatures and direct sunlight. Outdoor installations require a weatherproof enclosure and additional wiring and plumbing connections.
What is the warranty for the Rheem RTEX 27?
The Rheem RTEX 27 comes with a 3-year warranty for parts and labor, as well as a 5-year warranty for the heating elements.
How do I adjust the temperature on the Rheem RTEX 27?
To adjust the temperature on the Rheem RTEX 27, simply press the up or down arrow buttons on the control panel. The unit will display the current temperature setting and allow you to adjust it in increments of 1 degree Fahrenheit or Celsius.
What is the maximum flow rate for the Rheem RTEX 27?
The Rheem RTEX 27 has a maximum flow rate of 5.3 gallons per minute, which is sufficient for most residential and light commercial applications.
Conclusion
The wiring diagram for the Rheem RTEX 27 is an essential reference tool for anyone installing this high-quality tankless water heater. By following the wiring connections for each component, you can ensure that the unit operates safely and efficiently and provides reliable hot water on demand. If you have any questions or concerns about the wiring diagram or the installation process, be sure to consult a licensed professional for assistance.
