Titus LSC IOM - Manual (Page 21)

TU-LSC-IOM
ECM Overview and Setup
21
Overview
This section addresses the Titus ECM motor which is
standard on all LSC units. The ECM motor provides
outstanding comfort, safety, and performance with greatly
reduced energy consumption compared to traditional units
with permanent split capacitance AC motors and with
proper installation and operation the units will provide a
long service life . The ECM motor provides a high degree
of flexibility and configurability, with the simplicity of
customized factory configurations appropriate to most
installations. Very little intervention is needed by service
and installation personnel in most applications; however,
installers must read through this entire section before
beginning installation of the new equipment. This literature
focuses on unit motors and associated controls.
General Information
There are four primary components that enable the ECM
technology on the LSC units:
1. Titus ECM Motor
2. ECM Engine Board
3. PWM Controllers
4. Inductors
The motors and modules are combined as a system, and
cannot work without each other.
B- Manual/Unit PWM Controller
ECM Motor
ECM Engine Board
A - Remote Signal PWM Controller
3. The LSC unit is equipped with either a manual control or
a remote control PWM fan speed controller, mounted on
the side of the line voltage control enclosure.
ECM motors shipped with remote PWM controller require a
signal from the DDC controller to control fan speed.
ECM motors with manual PWM controllers are shipped
from the factory at design CFM when provided. Otherwise
motors are shipped at motor full speed setting.
4. Allow motor to run-in at least 15 minutes before
adjusting speed. During initial run-in, check ductwork
connections for leaks and repair if necessary. (Do not
adjust fan speed down if ductwork is not connected).
5. Set the unit to full heating (maximum induction). Adjust
and set remote balancing dampers, if present. Adjust the
speed control to deliver the required CFM by measuring air
quantity at the room outlets.
6. Proceed to primary air adjustment procedure, detailed in
control installation information. Fan should be re-adjusted
with primary air and ventilation air at maximum setpoint,
to insure that no supply air is discharged at the induction
port.
NOTICE
ECM Motor Fan Flow Adjustment
Before starting the fan motor, follow steps 1 and 2
1. Discharge ductwork should be connected. The
minimum
recommended discharge static pressure is 0.2" wg. Be
sure that any fan packing is removed from units prior!
2. All foreign materials should be removed from duct
system. Filters should be installed where required.