If you own a Tempra 24 Plus electric tankless water heater, it’s essential to understand its wiring diagram. A wiring diagram is a schematic representation of the electrical connections that make up a system. In this article, we’ll go over the wiring diagram for the Tempra 24 Plus and provide a comprehensive guide to help you understand how it works.
Understanding the Basics
The Tempra 24 Plus electric tankless water heater is designed to operate at a voltage of 240V, with a minimum electrical service of 150A. The unit is powered by two heating modules, each rated at 12kW, which work together to provide a maximum output of 24kW. The wiring diagram consists of three main components: the control board, the heating modules, and the temperature sensors. The control board is the brain of the system, responsible for receiving inputs from the temperature sensors and regulating the power output of the heating modules to maintain the desired water temperature.
The Control Board
The control board is located at the bottom of the Tempra 24 Plus and is easily accessible by removing the cover. It consists of a printed circuit board (PCB) with various components, including relays, fuses, and diodes. The PCB is labeled with terminal numbers, which correspond to the various electrical connections in the system.
Terminal 1 is the power input, which connects to the main electrical service. Terminal 2 is the neutral input, which connects to the neutral bus. Terminal 3 is the ground input, which connects to the ground bus.
Terminal 4 is the heating module output for module 1, while terminal 5 is the heating module output for module 2. Terminal 6 is the common connection for the temperature sensors. Terminal 7 is the input for the cold water temperature sensor, while terminal 8 is the input for the hot water temperature sensor. Terminal 9 is the control output for the heating modules.
The Heating Modules
The heating modules are the heart of the Tempra 24 Plus, responsible for heating the water as it passes through the unit. Each heating module consists of a set of heating elements, which are controlled by the control board. The heating modules are connected to the control board through terminals 4 and 5.
Each heating module has a set of temperature sensors, which are used to monitor the water temperature as it passes through the unit. The sensors are connected to the control board through terminals 7 and 8. The temperature sensors are responsible for sending feedback to the control board, which adjusts the power output of the heating modules to maintain the desired water temperature.
The Temperature Sensors
The temperature sensors are located inside the Tempra 24 Plus and are responsible for measuring the temperature of the water as it passes through the unit. There are two temperature sensors: one for the cold water inlet and one for the hot water outlet. The sensors are connected to the control board through terminals 7 and 8.
The temperature sensors work by sending a signal to the control board, which uses this information to regulate the power output of the heating modules. If the temperature of the water is too low, the control board will increase the power output of the heating modules, while if the temperature is too high, it will decrease the power output of the heating modules.
FAQ
What is the purpose of the wiring diagram for the Tempra 24 Plus?
The wiring diagram provides a visual representation of the electrical connections in the Tempra 24 Plus, making it easier to understand how the system works and troubleshoot any issues that may arise.
What voltage does the Tempra 24 Plus operate at?
The Tempra 24 Plus operates at a voltage of 240V.
What is the minimum electrical service required for the Tempra 24 Plus?
The minimum electrical service required for the Tempra 24 Plus is 150A.
What is the maximum output of the Tempra 24 Plus?
The Tempra 24 Plus has a maximum output of 24kW.
How are the temperature sensors used in the Tempra 24 Plus?
The temperature sensors are used to monitor the temperature of the water as it passes through the unit and send feedback to the control board, which adjusts the power output of the heating modules to maintain the desired water temperature.
Conclusion
Understanding the wiring diagram of your Tempra 24 Plus electric tankless water heater is crucial for its proper functioning. In this article, we’ve provided a comprehensive guide to help you understand how the system works and troubleshoot any issues that may arise. Remember to always refer to the manufacturer’s instructions and consult with a licensed electrician if you’re unsure about any aspect of the wiring diagram.
