Fans; Supply, Return, And Exhaust Fan Array; Ec Motor Technology - Daikin DPSA Manual

Supply, Return, and Exhaust
Fan Array
• Single Width, Single Inlet (SWSI) Class II Construction
supply fans with aluminum blades provides efficient and
quiet operation at a wide range of static pressures and
airflow requirements.
• Rebel Applied offers Direct-dive ECM Fans configured in
multiple array configurations to provide industry leading
application optimization.
• Fans are statically and dynamically balanced in two
planes as per DIN/ISO 1940 to balancing grade G 6.3;
Stringent factory balancing, and no belts eliminates the
need for spring isolation on fans.
Figure 16: Supply Fan Array
Figure 17: Exhaust Fan Array
CAT 258 • REBEL APPLIED ROOFTOP
Figure 18: Return Fan Array

EC Motor Technology

• Electrically commutated motors (ECM) consist of a
variable speed permanent magnet brushless DC motor
with an integral inverter. The integral inverter eliminates
variable frequency drives (VFD) saving energy losses,
and enhancing energy efficiency at part load
• ECM Fans provide the highest efficiency under
modulation of any fan solution available today
• ECM motors offer built in phase failure protection, power
factor correction to a minimum of 0.95, EMI and RFI
protection and soft start
• No slip losses in the rotor like VFD and induction motor
systems provide the high efficiency achievable at part load
• All motors are totally enclosed and are constructed to
meet IP54 enclosures to protect against circulating dirt,
dust, and seepage of water, and oil
• All fans are offered with totally enclosed, no maintenance
bearings with application rated L50 = 350,000 hr bearing
life or more; equal to 40 years of 24/7/365 operation
• Direct drive motors offer the lowest total operating cost
because they require no field maintenance. The direct-
drive design means there is no need to maintain belts,
pulleys, bearings or drives
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Fans

Fans
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