Figure 7. Flowchart illustrating ECM motor operation in an air handler or furnace application. The ECM consists of the ECM control module and three-phase motor. Starting at the left side of the flowchart, on a call for heating or cooling, the thermostat closes and completes the circuit to th...
temporary jumper between R - G - Check motor for tight shaft - Perform motor/control replacement check - Run Moisture Check • Motor rocks, but wonʼt start - Check for loose or compliant motor mount - Make sure blower wheel is tight on shaft - Perform motor/control replacement check ...
Like the ECM Modulator 4. The 4Z version modulates a true variable speed blower motor in response to delivered air temperature. However, it also monitors the delivered static pressure, and allows you to set a maximum duct pressure. When zones open and close the 4Z will sense the change in...
Product name:Ec Centrifugal Fan;Application:Air Ventilation;Motor type:Brushless DC Motor;Feature:High Efficiency;Usage:High Pressure Blowing;Material of Impeller Blade:Galvanized sheet;Fan Type:Centrifugal Fan;Size:10 inch;Certification:CE UL;Bearing Ty