Ultra-high efficiency permanent magnet motors have proven to be 7% – 15% more efficient compared to NEMA Premium® efficiency induction motors.
Variable Frequency Drives (VFD) enable individual on/off and speed control of fans to maintain peak static efficiency and pressure over the air handler operating range.
Fans come in 7 sizes from 10 – 22 inches to match performance requirements and optimize operation efficiency.
Redundancy and Reliability
If a fan or motor failure occurs in a FANWALL system, the remaining operating fans can compensate to maintain airflow and static pressure until the failed component(s) can be repaired or replaced.
Dedicated VFD for each fan and motor combination. A fan, motor, or VFD failure is inherently isolated, eliminating the need for a bypass VFD or potential for a ground fault failure of the entire array.
Both stainless steel fans and high-performance polymer fans are available in multiple sizes to efficiently meet system performance or application requirements.
Choice of motors to meet project efficiency requirements, including induction, PM, and ECMI.
Advanced Engineered Design
Variable cube dimensioning allows the selected array to more closely fit air tunnel dimensions, so that the fans produce a uniform piston of air over the entire coil surface for optimal heat transfer and even filter loading.
System optimization controls allow on/off control of individual fan cubes to match requirements in variable airflow applications with the optimum number of fans and motors operating at peak efficiency.
FANWALL backdraft damper seals off the fan to prevent recirculation of system air with very little leakage if a cube is taken out of operation. When open, the damper’s aerodynamic design ensures almost zero-system effect.
Stringent balance requirements and sturdy components in each FANWALL cube eliminate internal vibration and the need to isolate a FANWALL array within the air handler. It can also help eliminate the need for a concrete inertia pad for the air handler and facilitate meeting requirements for seismic certification.
The need for sound attenuators and other ancillary components that create a static-pressure penalty within the air handler can be eliminated.
Low Maintenance and Service
FANWALL systems eliminate belts and sheaves, because they use direct-drive fans instead of belt-driven fans.
Permanently sealed motor bearings provide long life and require little-to-no maintenance.
Components in a FANWALL system typically are significantly smaller, lighter weight, and easier to access than the same components for conventional fan systems.
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