Adjusting The Airflow Speed On Ecm Blower Fan Motors Variable Multi In this hvac training article, we will be discussing how to adjust the fan speeds on an indoor ecm variable speed blower motor and an ecm constant torque multi speed blower motor. these blower motor versions can be found in furnaces, air handlers, and packaged units. this is a follow up to our other article on "adjusting the furnace ac airflow speed on a 120v psc blower motor". if you have not. As you might have guessed, the two more modern blower types are variable and multi speed blowers. 1. multi speed blowers. multi speed blowers feature two, sometimes three, fan speeds, which create better airflow and allow users to have more control over cooling or heating their environment.
Adjusting The Airflow Speed On Ecm Blower Fan Motors Variable Multi Ecm is the technology of the very high efficiency motors. there are 2 types used in hvac, the constant torque, which has preset "speeds" that vary as the duct conditions vary, and variable speed where you tell the motor the speed you want and it varies its torque to give you close to the airflow you've asked for, even as duct conditions change, like a filter plugging up or vents being shut. It has very low as a constant fan speed, then the installer picks the heat speed and cool speed as appropriate. the constant fan speed varies from virtually nil to about 1 4 of the cool speed. the variable speed models can be told what you want for constant fan either on the board or the trane thermostat if you get one. An ecm (electronically commutated motor) motor is a brushless dc motor that uses electronic controls to regulate its speed, torque, or power output without external devices or sensors. ec motors differ from standard psc (permanent split capacitor) motors, which only turn on and off at constant speeds. Performance. ecm motors: provide consistent performance with precise control over speed and torque. they are ideal for applications requiring steady airflow and minimal noise. variable speed motors: excel maintains a consistent indoor environment by adjusting speeds based on demand. they offer superior temperature and humidity control.
Comments are closed.