Daikin DPSA - FANS; Supply, Return, and Exhaust Fan Array; EC Motor Technology

CAT 258 • REBEL APPLIED ROOFTOP 14 www.DaikinApplied.com
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• Single Width, Single Inlet (SWSI) Class II Construction
supply fans with aluminum blades provides e󰀩cient and
quiet operation at a wide range of static pressures and
airow requirements.
• Rebel Applied o󰀨ers Direct-dive ECM Fans congured in
multiple array congurations 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
Figure 18: Return Fan Array
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• 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 e󰀩ciency at part load
• ECM Fans provide the highest e󰀩ciency under
modulation of any fan solution available today
• ECM motors o󰀨er 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 e󰀩ciency 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 o󰀨ered 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 o󰀨er the lowest total operating cost
because they require no eld maintenance. The direct-
drive design means there is no need to maintain belts,
pulleys, bearings or drives