Regal Genteq Evergreen EM User manual

A Regal Brand
EVERGREEN • EM
INSTALLATION GUIDE

Genteq’s Evergreen EM is designed to replace OEM X13 ECM
motors quickly and easily – with no programming required.
Evergreen EM provides the same comfort, lower utility bills
and air quality as the OEM X13 ECM motor, with less hassle
for you. With Evergreen EM, increasing your bottom line
just got a little easier. For more information on all Genteq
products please visit genteqmotors.com.
1946 West Cook Road
Fort Wayne, IN 46818
1-866-503-8566
thedealertoolbox.com
Part # 8794721MH Rev 2/13

Contents
Safety Considerations ............................................................................1
Introduction/Applications .....................................................................2
Mounting............................................................................................ 3-4
Electrical Connections ..................................................................... 5-10
High Voltage Power Connections...................................................6
Low Voltage Signal Connections ................................................ 7-9
Final Notes........................................................................................10
Sequence of Operation ......................................................................11
Rotation Sensing....................................................................................11
Maintenance ........................................................................................12
Reliability ................................................................................................12
Troubleshooting Guidelines............................................................ 13-15
Evergreen EM Motor Specications ....................................................16
Please read the entire instruction manual
before starting the installation.
®EM

Safety Considerations
The following safety warning symbol is used throughout this manual as a
safety consideration for installation and operation of the Evergreen EM motor.
This warning indicates a hazardous situation which, if not avoided, could
result in serious injury or death. Please read and observe all of these safety
concerns.
Installation and service of this motor should only be attempted by trained
service technicians familiar with the Evergreen.
This motor should be installed in accordance with accepted practices and
installation instructions, and in compliance with all national and local codes.
This installation/service manual enables a qualied technician to install,
service, repair, and maintain the Evergreen EM motor. This manual should be
kept near the HVAC system for future reference.
- 1 -
Always disconnect the main power from the unit being serviced before
making any wiring connections to the Evergreen EM. It is also a good
practice to conrm that the power is off with a meter.
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, re, electrical shock, or other conditions
which may cause personal injury, death, or property damage. Consult
a qualied installer, service agency, or distributor for information and
assistance. The qualied installer or agency must use the supplied or
recommended parts when installing or servicing this product.
®EM

Introduction and Features
The ultra-high-efciency ECM has become the preferred motor for use in
energy-saving HVAC systems. Evergreen EM is made with the same eld-
proven, high-efciency ECM technology that has been used for more
than 20 years in new HVAC equipment. The Evergreen EM was designed to
replace direct-drive blower motors in residential and light commercial indoor
furnaces, air handlers, and package systems that were designed with a
standard ECM motor, such as an X13 or equivalent competitor model. It can
also be used to retrot PSC motors in commercial building series VAV boxes
and packaged heat pump systems. It is NOT intended to replace premium
ECM constant airow products, such as Eon 2.3, 3.0, and 2.5.
Features:
• Multi-speed, constant torque, brushless DC motor
• Available in 1/3, 1/2, 3/4 and 1HP ratings
• Available in either 115VAC or 208-230VAC single-phase input, 50/60Hz
• Maintains ECM-level Efciency up to 80%
• Operating speed range of 600-1200 RPM
• Automatically determines motor direction using Genteq’s Rotation
Sensing Technology (See Rotation Sensing on page 11 for details)
• Soft Start and Off Ramp for quieter operation
• 5 Discrete Speeds using 24VAC (3 using 18VDC) signal inputs
• Variable Speed, Torque Control using a PWM Signal. (Motor switches to
Variable Speed mode when a PWM input is detected)
• NEMA 48-frame (5.6 inch diameter) Belly Band Mount with 5-inch long,
½ inch diameter shaft.
• Class B insulation
• Electronic Thermal Overload Protection
• UL and CSA recognized component
• Shielded ball bearings
• Encapsulated Electronics
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- 3 -
Mounting
Remove the blower section from the HVAC system. Remove the existing
ECM motor from the blower section and properly dispose of the motor.
The frame size of the Evergreen EM motor is NEMA 48 (5.6” Diameter). This
is the most common frame size for indoor blower motors. The Evergreen EM
requires a belly band style mounting bracket.
- If the existing motor mount is welded to the motor, bolted directly
to the motor, or attaches to the bearing assembly of the motor, it
cannot be used on the Evergreen EM. Genteq belly band kit 5K002
is recommended to replace the 4-lug mount shown below. See your
local distributor or theDealerToolbox.com for availability.
- Universal belly band motor mounts in multiple sizes are available from
local distributors and theDealerToolbox.com
- If the mounting bracket must be replaced, selecting one with the
same mounting pattern on the blower housing will save drilling new
holes in the blower section.
- The belly band must t the new motor properly. It should be tight
enough to prevent the motor from shifting on start-up and located
according to the diagram below.
Always disconnect the main power from the unit being serviced before
disconnecting any wiring or removing any components. It is also a good
practice to conrm that the power is off with a meter.
®EM

Mounting (CONT’D)
If a new motor mount is required
and the legs do not line up with
the original holes in the blower
housing, it is required to use a
bolt with either a lock washer
and nut or a locking nut through
the drilled hole(s). Self tapping
or sheet metal screws are not
sufcient for a long term installation
when a new hole is drilled through the thin wall of the blower housing.
When positioning the legs of the bellyband on the motor, make sure that
once the motor is mounted into the blower section, the wires exit the bottom
of the motor as installed in the air handler. This will insure that a proper drip
loop can be made with the signal and power lines.
The blower wheel should be centered in the blower
housing. The wheel should also not be against the
motor bearing housing. If this is not possible while
centering the wheel, the motor should be adjusted
in the belly band. If the blower wheel is dirty, it
should be cleaned.
The blower wheel hub locking bolt should be
secured to the at portion of the motor shaft
after the wheel has been centered in the
blower housing.
Re-install the blower section in the HVAC system and proceed to the next
page to make the electrical connections.
- 4 -
As installed in the air
handler, the motor should
be positioned with the
connectors facing down
between the 4 and 8
o-clock position, with the
wiring harness formed
into a drip loop.
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- 5 -
Electrical Connections
The unique design of the Evergreen EM allows for multiple speed operation
using either 24VAC (18VDC) discrete inputs or variable speed, torque control
using a PWM controller.
The high voltage power terminals, (L) and (N), must be connected to a
continuous, un-switched power supply.
The motor on/off operation and speed/torque selections are connected
using the low voltage (C) and (1-5) terminals.
- With 24VAC, the Evergreen EM provides 5 speed operation using terminals
(C) and (1-5).
- With 18VDC, the Evergreen EM provides 3 speed operation using terminals
(C), (1), (3), and (5)
- With the addition of a PWM controller, the Evergreen EM provides variable
speed, torque control using terminals (C) and (1).
The Evergreen EM will automatically recognize the connected low voltage
input and operate accordingly. Each motor provides all three low voltage
control operations.
Detailed wiring for the High Voltage Power Connections and each unique
Low Voltage Signal Connections are covered in the following sections.
®EM

- 6 -
Electrical Connections
High Voltage Power Connections
The Evergreen EM is designed for continuous un-switched connection to
its rated high voltage power supply. Motor operation is controlled by low
voltage signal inputs.
Always conrm the rating on the motor matches the power supply of the
system it is applied to and/or the motor it is replacing.
If a door safety switch is present, wire after the switch so power will be
disconnected when the door is removed for maintenance or service.
1. Using 3/16” Female Quick Connect Terminals and 18 AWG wire, connect
the (L) and (N) terminals on the motor to any un-switched line voltage L1
and L2, Nameplate Voltage power supply.
2. Using a 3/16” Female Quick Connect Terminal and 18 AWG wire,
connect the (G) terminal on the motor to the system ground.
Always disconnect the main power from the unit being serviced before
making any wiring connections to the Evergreen EM. It is also a good
practice to conrm that the power is off with a meter.
®EM

- 7 -
Electrical Connections
Low Voltage Signal Connections
- (24VAC) Discrete Speed Operation
The Evergreen EM has 5 available speeds using 24VAC control inputs.
The inputs of the Evergreen can connect directly to the 24VAC thermostat
terminal strip or 24VAC signal outputs from the HVAC system control board.
1. Using a 1/4” Female Quick Connect Terminal and 22-18 AWG wire,
connect the (C) Common terminal on the motor to the 24VAC common
(C) thermostat terminal or 24VAC common side of the transformer on the
HVAC System. Make sure that this line is not connected to the side of the
transformer connected to the thermostat 24VAC (R). If it is connected to
the (R) high side of the transformer, the motor will not operate.
2. Select operating speeds by using 1/4” Female Quick Connect Terminal(s)
and 22-18 AWG wire to connect terminals (speeds) 1-5 to any 24VAC
thermostat demand or 24VAC HVAC system control board output.
DO NOT connect the Low Voltage SIGNAL (speed) terminals to the high
voltage power supply. Applying voltage above 30VAC to these terminals
will cause permanent damage to the motor.
®EM