Installation Guide for the Evergreen EM Motor

Evergreen EM Product Overview and Specifications

• Manufacturer and Presenter: Presented by Hallie, Training Manager for Regal Beloit, specifically regarding the Evergreen EM product line.

• Product Design: The Evergreen EM was designed specifically as a replacement for the X13 OEM ECM indoor blower motor, utilized primarily in residential and light commercial HVAC applications.

• Horsepower Sizes: The motor is manufactured in four standard horsepower sizes:     * $1/3\,HP$     * $1/2\,HP$     * $3/4\,HP$     * $1\,HP$

• Voltage Ratings: Available in two primary AC voltage configurations:     * $115\,V$     * $208-230\,V$

• Rotational Direction: All models feature dual rotation, capable of operating in both clockwise and counterclockwise directions.

• Programming: These motors are preprogrammed at the factory.

• Operational Speed: The motor is rated for a nominal speed of $1070\,RPM$.

• Mechanical Frame Specifications:     * Frame Type: Direct drive $48$ NEMA frame.     * Diameter: The motor frame is $5.5$ inches in diameter.     * Shaft Length: The shaft measures $5$ inches in length.     * Shaft Diameter: The shaft has a diameter of $1/2$ inch.

• Bearing Construction: Built with permanently lubricated ball bearings to ensure longevity and reduced maintenance.

• Warranty Information: The Evergreen EM comes with a standard two-year warranty.

• Resource Access: Complete specifications and the full installation manual are available on the website: thedealertoolbox.com.

Application and Compatibility Guidelines

• Intended Replacements:     * The primary target for replacement is the X13 OEM ECM indoor blower motor.     * It can also be used to replace similar models from competitors.

• Explicit Exclusions:     * PSC Motors: The Evergreen EM should not be used to replace Permanent Split Capacitor (PSC) indoor blower motors, which are identified by the presence of a run capacitor.     * Constant Airflow Communicated ECMs: It is not a replacement for OEM constant airflow indoor blower motors using specific communication protocols.     * Incompatibility Examples:         * Model 3.0 featuring a $4$-pin communication connection.         * Model EON featuring a $16$-pin communication connection.

Identifying and Selecting the Replacement Model

• Step 1: Evaluation of the Original X13 Motor:     * Identify the horsepower and voltage rating by looking at either the motor label or the control label on the X13 unit.

• Step 2: Utilization of the Evergreen EM Identification Chart:     * Apply the horsepower and voltage ratings to the official stock model chart.

• Model Numbering Logic:     * Voltage Prefix: The first two digits of the model number indicate the voltage rating. A "61" prefix ($61xx$) indicates a $115\,V$ motor. A "62" prefix ($62xx$) indicates a $208-230\,V$ motor.     * Horsepower Suffix: The last two digits indicate the horsepower capacity.         * $03$ represents $1/3\,HP$.         * $05$ represents $1/2\,HP$.         * $07$ represents $3/4\,HP$.         * $10$ represents $1\,HP$.     * Example Case: A $1/2\,HP$, $115\,V$ X13 motor would be replaced by an Evergreen EM model $6105$.

Physical Installation and Motor Mounting

• Step 2 of the General Process: Motor Mount Selection:     * The technician can either use the existing motor mount or select a new one.

• Belly Band Style Mounts: Because both the X13 and the Evergreen EM utilize a standard $48$ NEMA frame, the Evergreen EM will typically slide directly into the existing belly band mount. The technician should:     * Loosen the belly band.     * Pull the old X13 motor out.     * Slide the Evergreen EM in, tighten it, and center the blower wheel.

• Mounting Alternatives: If the unit does not use a belly band mount, various other styles, including OEM-specific mounts, are available via thedealertoolbox.com.

• Critical Placement Warnings for Belly Banding:     * The motor shell features vent holes and physical indentations called "dimples."     * The belly band must be placed specifically between the vent holes and the dimples.     * Warning: Never cover the motor vents with the mounting hardware.     * Warning: Do not place the mount below the dimples, as this area contains the motor's internal electronics.

Electrical Connections and Wiring Procedures

• Terminal Compatibility: The X13 and the Evergreen EM feature identical plug connections and terminal layouts.

• Step 3 of the General Process: Connecting Wires:     * Remove the wiring from the X13 motor. This may consist of individual wires, a single plug and wires, or two plugs, depending on the Original Equipment Manufacturer (OEM) configuration.     * Plug the existing wires or connectors directly into the corresponding terminals on the Evergreen EM motor.

Airflow Configuration and Speed Tap Adjustment

• Speed Tap Layout: The Evergreen EM features five speed taps, numbered $1$ through $5$.

• Comparison to X13 Programming: The original X13 is a programmable ECM where the OEM determines the order and speed values of taps $1$ through $5$. Therefore, different X13 motors may behave differently regarding which tap corresponds to which speed.

• Evergreen EM Programming:     * Tap 1 is the lowest speed.     * Tap 5 is the highest speed.

• Field Adjustment Procedure:     * As a starting point, connect heating and cooling speeds to any selected taps (e.g., taps $1$ and $3$, or taps $2$ and $4$).     * Measure the airflow in heating and cooling modes.     * If more airflow is required, move the wire to a higher-numbered tap.     * If less airflow is required, move the wire to a lower-numbered tap.

• Evergreen EM Supplied Harness:     * Some OEM systems use individual wires that connect to the motor. If the motor is mounted upside down or in an inaccessible location, the Evergreen EM supplies a wiring harness.     * This harness connects to all five speed taps and brings the connections back to the OEM control board.     * The harness wires are color-coded and labeled at the end for ease of selection at the board rather than at the motor terminal.

Automatic Rotation Sensing Sequence

• Implementation: The motor uses an automatic sensing sequence the very first time it is energized (whether for a heat, fan, or cool call) to determine the correct rotation for the blower wheel.

• Sensing Steps:     1. The motor starts and runs for approximately $10$ to $15$ seconds in the clockwise rotation at a slow speed (roughly $300\,RPM$).     2. The motor slows down and stops completely.     3. The motor starts and runs for approximately $10$ to $15$ seconds in the counterclockwise rotation at roughly $300\,RPM$.

• Decision Matrix: The motor's internal logic measures the current (power) required to turn the wheel in each direction. It assumes the direction requiring the most power is the correct direction for the blower wheel.

• Finalizing Rotation:     * If the correct direction was counterclockwise, it will accelerate to the selected speed tap.     * If the correct direction was clockwise, it will stop once more and restart in the clockwise direction, then accelerate to the selected speed.

• Operational Note: This sensing sequence occurs only during the initial power-up. Every subsequent start will immediately use the determined direction.

Final Installation Steps and Best Practices

• System Documentation: Technicians should take the supplied label from the motor box and adhere it next to the HVAC unit's schematic.

• Recording Data: Manually write down the horsepower of the original motor replaced on the provided label.

• Support Benefit: This label provides future technicians with the schematic for the universal replacement and an $800$ technical support number.

• Stocking Recommendations: Because of the wide compatibility and preprogrammed nature, contractors may only need to stock two or three motor models to cover the majority of standard $115\,V$ or $208-230\,V$ applications in a specific region.

• Performance Matching: The Evergreen EM is designed to match the efficiency and constant torque airflow characteristics of the original X13 technology.