Titus Fan Powered Term. IOM - Manual (Page 4)

TU-FB-IOM 08-26-13
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ECM Overview and Setup
Overview
This section addresses the Titus ECM motor which is
optional on all Fan Powered Terminal 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 Fan Powered Terminal 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 Fan Powered Terminal unit can be 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.