Installation And Initial Setup - Trane VUV Installation, Operation And Maintenance Manual

Installation and Initial Setup

WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious
injury.Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. Verify with a CAT III or IV
voltmeter rated per NFPA 70E that all capacitors have
discharged.
WARNING
Hazardous Service Procedures!
Failure to follow all precautions in this manual and on
the tags, stickers, and labels could result in death or
serious injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical hazards,
MUST follow precautions in this manual and on the
tags, stickers, and labels, as well as the following
instructions: Unless specified otherwise, disconnect all
electrical power including remote disconnect and
discharge all energy storing devices such as capacitors
before servicing. Follow proper lockout/tagout
procedures to ensure the power can not be
inadvertently energized. When necessary to work with
live electrical components, have a qualified licensed
electrician or other individual who has been trained in
handling live electrical components perform these
tasks.
Safety Requirements
Follow all recommendations below. Failure to do so could
result in death or serious injury.
• The ECM motors contain capacitors which store residual
energy. Please keep clear of the fan wheels for 5 minutes
after the power has been removed from the system, as a
power request with the motor powered off, could result in
a very short period of actuation.
• All settings take effect immediately, including fan start-up
and enabling of electric heat. Caution should be taken to
stay clear of hazardous voltages, moving parts and electric
heat elements while making adjustments to the
VelociTach™ motor control board. If it is not practical to
stay clear of these areas during adjustment of the motor
control board, please contact Trane Global Parts for
configuration kit that allows easy powering of the motor
control board outside of the unit with a 9V battery.
• Changes to switch settings on the CSTI adapter board take
effect immediately. Changes should be made to the CSTI
configuration switches with the power off.
UV-SVX005G-EN
• Initial hookups to the CSTI and Standard Adapter board,
including low voltage interconnections, must be made with
the power off.
• Do not make connections to the motors or the adapter
boards while power is ON. Do not remove connections to
the motor or the adapter boards while the power is ON.
• Do not free spin the fan wheels with your hands while the
unit is powered on. The system is constantly scanning and
responding to the operational status of the motors.
Setup
Note: Normally, Trane ECMs are configured for soft ramps
and transitions between speeds. However, to aid in
commissioning of the unit, for approximately 10–
15 minutes, the ramps will be shortened to quickly
observe proper unit behavior and response to speeds.
For new installations, all boards and motors are pre-installed
and pre-configured according to the unit configuration,
indicated by its model number.
Under normal and intended operation, the only required
intervention specific to the new ECM units is the wiring of:
• Wall-mounted low-voltage fan speed switch inputs to the
adapter boards' terminal strips and 24 Vac tap to field-
installed fan speed switch.
• Field-supplied controllers/thermostats to the adapter
boards' terminal strips and 24 Vac power tap to
field-supplied controller/thermostat.
• Adjustment and calibration of the variable speed inputs
(VSP/0–10V) on the system.
• Adjustment, calibration or disabling of the optional auto-
changeover function on CSTI units.
Otherwise, proceed with the mechanical, electrical and
controls installations as defined in other sections of this
manual, following all warnings and cautions.
After installation, turn power on.
Note: Specifications subject to change without notice.
Consult the unit submittals and unit schematics before
determining hookup requirements. Terminal block
positions, polarities and assignments are determined
for specific unit configurations only. Signal
assignments are indicated, for reference only.
Both adapter boards come equipped with integrated terminal
blocks to hook up to the field supplied/mounted fan speed
switches and external controls. Connections should be made
to the screw terminals with wires between 16 AWG and
24 AWG, with a ~4–5-mm wire strip length. The terminal blocks
have 5-mm spacing, and are equipped with 3-mm screws. The
field-supplied wires should have an insulation rating of 600V.
ECM Overview and Setup
57