This is because the motor can deliver precise airflow to balance the two-speed condenser design and multi-stage gas furnace firing speed to provide silent, draft-free comfort in almost any configuration.
Furnaces or air handlers with an ECM may operate flawlessly when mounted on a good vent, coil, and filtration device with constant pressure under proper design parameters. ECM-equipped systems, when properly configured, can enhance dehumidification, reduce register noise, conserve power & provide trouble-free services. The ECM motor can be programmed with multiple inputs to vary the speed and voltage using the internal smart screen. The multi-speed of the ECM motor allows it to reduce the drying effect that can occur during winter heating while still reducing cold and hot spots in the home. An ECM motor consumes fewer wattages than normal motors. At the same time, the increased airflow also provides the additional oomph of airflow that is needed to provide additional cooling or heating capacity to the system during times of high demand for the system.Īlso, Read: What Is a Motor Shaft? | How Shafts in AC/DC Motors Function | Common Uses of AC/DC Motors | Construction of a Motor Shaft Advantages of ECM Motor: More airflow also lowers the static pressure, which reduces torque. A faster motor creates more airflow to ensure that the CFM system remains stable despite resistance from conditions such as a clogged filter or hard-working evaporator. When the microprocessor increases the sensitive torque, it automatically increases the speed of the motor. The higher pressure essentials create additional resistance on the blades of the fan motor, which is why it needs more “muscle” or torques to turn the motor. An increased torque basically means that more “muscle” is needed to turn the motor. This high pressure increases the torque on the motor. Resistance to airflow can also be caused by a clogged filter or dirty coils, which will also increase the static pressure. Higher cooling demand increases condensation on the evaporator’s coils, reducing airflow (hence the higher static pressure). When the loads or demand on the systems increases (as if it is really hot outside, for example), high static pressure exists. We couldn’t figure out what could have triggered the change in torque? This draws out its static pressure in the systems. This was where the people in my office and I got really stuck. What will change the motor speed (RPM)? Depending on system conditions, motors will need to spin faster or slower to maintain steady torque and airflow. Once the settings are programmed into the microprocessor at the factory and the control board dip switches are set to field, motor torque and airflow (CFM) should remain constant. It provides improved electrical efficiency as well as the ability to program more precise and regulated motor operation on a wider variety of HVAC system outputs, thereby improving user comfort.Īlso, Read: What Is Axial Flux Motor? | Axis of Power | Axial Flux Technology | Development of Axial Flux Motor | Axial Flux VS Radial Flux Motor How Does an ECM Motor Work? Today, all motors used in residential & light commercial HVAC (indoor and outdoor) and commercial refrigeration evaporators and condensers have ECM application. The use of ECM motors is increasing rapidly. Logics are math equation or algorithm that finds the ideal airflow for each specific piece of HVAC equipment and uses a formula to calculate the exact relationship between motor speed and torque to maintain that airflow. It holds the logic that controls the motors. The microprocessor is the “brain” of the motor. In layman’s terms, an ECM motor reduces the overall power consumption of an AC or furnace while assisting in the maintenance of adequate airflow through the device.Ĭonstant Torques ECM is made up of two parts, the motors, and the ECM microprocessor, both of which are housed in a shell. An ECM engine, also known as a variable-speed motor, is an important advancement for air conditioners and furnaces. One of the primary objectives of current HVAC research is to identify ways to improve machine energy quality.Įnergy savings are not only a great way for homeowners & business owners to save money, but they are also good for the world. They are especially important when building large office buildings or climate-controlled settings. HVAC (Heating, Ventilation, and Air Conditioning) device is those that heat or cool a certain area.
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