Installing and servicing air handlers, such as those manufactured by Carrier, are a part of many HVAC jobs. Before beginning a job involving air handlers, it is important to understand the wiring diagrams for the specific model. This article will provide an overview of Carrier air handler wiring diagrams, including how to read them and what each component represents.
Reading Carrier Air Handler Wiring Diagrams
Carrier air handler wiring diagrams are organized into two primary sections: the power section and the control section. The power section contains all of the wiring related to the power source, such as the fuses, circuit breakers, and power supply lines. The control section contains all of the wiring related to the control system, such as the thermostat, blower motor, and other components. All of the wires in the power section are connected to the control section via a set of terminals.
Interpreting Carrier Air Handler Wiring Diagrams
Once you have identified the power and control sections of the Carrier air handler wiring diagram, you can begin to interpret the diagram to understand its purpose. The first step is to identify the components and their functions. Each component will have a label next to it, which indicates its function. For example, the thermostat is labeled “T”, the blower motor is labeled “M”, and the circuit breakers are labeled “CB”. Once you have identified the components, you can then determine the purpose of each wire. For example, the wire labeled “T” will be connected to the thermostat, while the wire labeled “M” will be connected to the blower motor.
Conclusion
Understanding how to read Carrier air handler wiring diagrams is essential for any HVAC technician. By studying the wiring diagrams and their labels, technicians can quickly and accurately identify the components and their functions, allowing them to install and repair the air handler with confidence. If you need help understanding Carrier air handler wiring diagrams, contact your local Carrier dealer for assistance.
