Installation and Maintenance Manual

ECM Overview and Setup
54 UNT-SVX07D-EN
ECM Engine Controller
• The ECM engine controls and reports the performance
of up to two Trane BLDC motors.
• The engine also co-ordinates the operation of the fan
in response to elec
tric heat behavior, and electric heat
behavior in response to hydronic heat behavior and
fan behavior.
• The engine incorporates a user inter
face that allows
adjustment of certain unit parameters and provides
constant feedback on motor operation.
• The engine integrates service and troubleshooting
to
ols, including high-precision tachometers, fan
status, and electric heat-enable indicators.
• The engine integrates a versatile configurable
auxiliary
temperature sensor.
• The engine incorporates various safety and lockout
features, suc
h as maintaining proper fan speeds, if
electric heat is called for.
Standard Adapter Board
• The adapter allows direct customer interfacing
through the use of terminal strips. Standard
interfacing includes:
– Fan Speeds (H, M, L) (for wall mounted fan speed
switc
hes)
– Variable speed (0–10V) inputs
• The standard adapter board elim
inates many separate
wiring harnesses in the panel and allows simple,
mistake-proofed single-plug interfacing of:
– The ECM engine controller
–T
ransformers
–Motors
– Valves
–Dampers
– Electric heat control
– Fan speed switches
– Main Power (except electric heat).
• Electric heat lockout circuits and fan proving circuits
for electric hea
t are standard, and are pre-configured at
the factory.
CSTI Adapter Board
• Performs all the functions of the standard adapter
module, but in addition, provides convenient field
connections to factory mounted end devices,
including:
– Valves
–D
ampers
– Electric Heat
• Performs courtesy “
inversion” of thermostatic inputs
to match selected valves:
Figure 21. ECM engine controller
Figure 22. Adapter board
Note: Display and Menu/
Enter, Increase, and
Decrease Buttons
Note: Customer Low-
Voltage
Interface for
Fan Speeds,
Variable Fan
Speed, and
24 Vac Supply
Figure 23. CSTI adapter board
1. Customer Low-Voltage Interface for Valves, Electric Heat, Dampers, Fan
Speeds, Variable Fan Speed, and 24 Vac Supply
2. Valve(s), Electric Heat, and Changeover Configuration Switches (Factory-
Set)
1
2
UNT-SVX07_-EN.book Page 54 Friday, April 27, 2012 9:40 AM