Catalogue

6 UV-PRC004-EN
Features and Benefits
Energy Efficiency
Trane’s commitment to providing premium quality products has led to the exclusive use of
Electronically Commutated Motors (ECM) in all Unit Ventilators. These brushless DC motors
incorporate the latest technology for optimized energy efficiency, acoustical abatement,
maintenance free and extended motor life. Each motor has a built-in microprocessor that allows
for programmability, soft ramp-up, better airflow control, and serial communication.
• Trane units equipped with ECMs are significantly more efficient than the standard Permanent
Split Capacitor (PSC) motor.
• Lower operating costs on average of 50 percent (versus a PSC motor).
• The Reduced FLA feature allows units to ship w
ith a nameplate FLA rating much lower than a
typical ECM unit.
Electronically Commutate Motor (ECM)
The fan motor is a variable speed electronically commutated motor with overload protection. The
motor is wired to either termination board so the unit can be control with either three fan speeds
or 0 Vdc to 10 Vdc. The motor speed is not affected by damper positions. Standard motors are rated
up to 0.25 ESP (external static pressure). High static motors are rated from 0.25 ESP to 0.45 ESP.
Bearings for the motor are permanently lubricated requiring little maintenance over the lifetime of
the equipment.
The motor is removable without complete disassembly of the fan board. Simply remove the two
motor quick-connects and loosen the shaft coupling.
Filter
Filters for the horizontal unit ventilator are of 1-inch, throwaway, MERV 8, or MERV 13. They are
shipped with the equipment for installation/start-up purposes. Extra filters may be ordered
separately for maintenance of the equipment.
Figure 2. Fan motor
UV-PRC004-EN.book Page 6 Monday, February 4, 2013 11:01 AM