ECM Technology
Running costs. Energy consumption. Life cycle.
These are 3 issues that are becoming more and more
important in the choice of Fan Coil Units. With these criteria in
mind, Johnson Controls offers the ECM range of FCU.
ECM technology comprises a brushless motor combined to a dedicated electronic device (inverter). In comparison to conventional
units equipped with asynchronous three-speed motors, the fancoil and cassette units with brushless motors can obtain a
considerable energy saving, by reducing power consumption up to 70%.
Air flow rate can be varied in continuous by means of a 1-10 V signal generated both by our controls or by independent controls
systems. The continuous air flow control improves the acoustic comfort and allows a more punctual reply to the variation of the
thermal loads, enhancing the stability of ambient temperature.
Technology Features
ECM technology consists of a brushless motor combined with an
inverter managed by specific regulators. The controller uses a
0-10 VDC modulating signal to regulate the fan speed. • Brushless motor with inverter.
• 0-10VDC control signal.
• Low mechanical resistance and heat gain
• Continuous regulation of the fan speed.
• Specifically designed electronic and digital regulators,
also for BMS systems.
• Possibility to manually set the desired three fan speeds
(MIN/MED/MAX).
• Available for fan coil and cassette units.
The brushless electric motor is composed of a rotor having permanent
magnets, whose magnetic fields interact with the ones produced by the
stator winding. The transfer of current is no longer by mechanical
commutator (sliding contacts) but by an electronic commutation
system: one electronic controller (inverter) powers the motor’s stator
and generates rotating magnetic fields, that in turn determine the
rotor’s speed.
Brusless motor develop much less heat than the traditional brushed
motors and they have much lower mechanical resistance than
the standard asynchronous maintenance. The absence of brushes
eliminates also the main source of electromagnetic noise.
Power consumption:
YFCN versus YFCN-ECM (W/kW)
Advantages
(compared to traditional brushed motors)
• Energy saving: electrical absorption reduced up to 70%.
• Higher efficiency: possibility to adapt the air volume and the capacities
accordingly to the actual room loads.
• Higher comfort: reduced variation of the temperature and relative
humidity in the room.
• Extremely quiet operation.
• Reduced wear and higher reliability.
• Longer life expectancy of the motor.
W
W
YFCN 430 W/kW YFCN 730 W/kW
YFCN 430 YFCN 730
YFCN-ECM 430 YFCN-ECM 730
2.50 3.50 4.50 5.50 kW
0.50
110
1.50
2.50
3.50 kW