Installation and Maintenance Manual

UNT-SVX07D-EN 53
ECM Overview and Setup
Overview
This addendum addresses changes to UniTrane Fan-Coil
and Cabinet Heater units, integrating new Trane Brushless
DC motors and controllers. This exciting new series
delivers outstanding comfort, safety, and performance
with greatly reduced energy consumption compared to
traditional units with permanent split capacitance AC
motors.
The new series of units will provide a long service life with
proper installation and operation. The new system
provides a high degree of flexibility and configurability,
but the simplicity of customized factory configuration
appropriate to most installations.
Very little intervention is needed by service and
installation personnel in most applications; however,
installers must read through the entire document before
beginning installation of the new equipment.
This literature focuses on unit motors and controls,
including three new circuit modules developed
specifically for this series.
General Information
There are four primary components that enable the
technology on your product:
1. Trane B LDC Mo tor
2. ECM Engine Board
3. Adapter Board
4. CSTI Adapter Board
The motors and modules are co
mbined as systems, and
cannot work without each other.
Trane BLDC Motor
• The BLDC motor has integrated electronics, overload
protection and short circuit protection. The motor
contains no user-serviceable components inside.
• The motor mates to the unit electrically via a single
plug that contains both the operating voltage and the
control signals that are needed for correct operation.
• The BLDC motor comes in both single
shaft (sizes 200,
300, 400, 1000, and 1200) and double shaft (sizes 600,
800, 1000, and 1200) configurations.
Note: Siz
es 1000 and 1200 have both a single shaft
and a double shaft motor installed.
• The BLDC motor has two voltage variations, 115/
2
08-230V and 277V. Units with three-phase and neutral
have motors wired to the L-N (as opposed to L-L). The
115/208-230V is configured for voltage by use of an
external jumper. If the jumper is present the motor will
be configured for use with 115V. The jumper must NOT
be present for use with 208-230V.
Figure 19. UniTrane fan-coil with Trane BLDC motor
Trane BLDC Motor
Circuit Modules
Figure 20. Trane BLDC motor
1. High Efficiency Brushless DC (BLDC) Motor Core
2. Motor Base Housing Potted Electronics Package
NOTICE:
Equipment Damage!
The motor harness attached to the single plug to which
the motor mates contains the very important motor
voltage jumper and should not be modified or
substituted. Failure to follow this instruction could
result in equipment damage.
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UNT-SVX07_-EN.book Page 53 Friday, April 27, 2012 9:40 AM