| NISCO Fan Co. has devloped a new high pressure | | | | Another high pressure in-line fan developed by NISCO |
| small vaneaxial fan that finally resolves the problem of | | | | Fan Co. is its Mixed Flow Fan. Mixed Flow fans are an |
| boosting air flow in long ventilation ducts of today's | | | | excellent choice for return air, supply, or general |
| large residential houses. | | | | ventilation applications where low sound is critical. As |
| For a long time the efficient ventilation of remote | | | | compared to similarly sized tubular centrifugals and |
| rooms in the large houses could be done only with two | | | | vane axials, a mixed flow fan will be 5-20 dB quieter! In |
| independent air supply sources (like a furnace). | | | | addition, the mixed flow wheel is extremely efficient |
| Ventilating ductwork in contemporary large houses | | | | and will cut down on operating expenses. |
| becomes so long and elaborated that even a high | | | | Unique features of the MVA Mixed Flow Fans include: |
| pressure furnace fan couldn't generate enough static | | | | - Universal Mounting System that allows the unit to be |
| pressure to blow through the whole length of such a | | | | field rotated at the job site |
| duct. The existing low pressure booster duct fans, | | | | - Compact design with standard slip-fit duct |
| even though compact enough to be installed in-line in | | | | connections for ease of installation |
| the house ventilation ductwork, still do not provide | | | | - UL/CSA listing for electrical is available |
| enough booster pressure / airflow. The usual solution | | | | - Continuously welded housing with a standard powder |
| to this problem was installation of two independent | | | | paint finish suitable for indoor or outdoor applications |
| furnaces with different air ducts, which is rather | | | | - A complete three plane vibration test of all |
| expensive option. | | | | assembled fans prior to shipment |
| A new high pressure (up to 1.5" WG) small vaneaxial | | | | Model MVAB: |
| Series VA fan is an ideal booster fan for prolonged | | | | * Belt drive construction with motor out of the |
| ducts. Unlike inline centrifugal ventilator, that also | | | | airstream |
| generates rather high pressure, the air comes out not | | | | * Air Handling Quality bearings selected with a minimum |
| from a peripheral outlet ring area, but distributes evenly | | | | life in excess of L(10) 50,000 hours at the maximum |
| across its outlet opening like in true axial blowers. | | | | operating speed |
| The other advantages of VA Series vaneaxial | | | | * Performance capacities from 1,000 to 100,000 cfm |
| ventilators is their intrinsic spark-resistant construction | | | | (1,700 - 165,000 m3/hour) and pressures up to 8 in. wg. |
| because of all-aluminum construction; quiet operation of | | | | (2000 Pa) |
| true vaneaxial design; lower energy consumption due | | | | Model MVAD: |
| to efficient wheel design. | | | | * Direct drive construction eliminates belts, pulleys, and |
| Eight different sizes of High Pressure Compact | | | | shaft bearing maintenance |
| Vaneaxial Fan from 6" DIA to 10" DIA offer wide | | | | * MVAD design is more compact for space critical |
| performance range for any ventilation duct design. | | | | application |
| Direct drive design ensures long live, maintenance-free | | | | * Partial wheel widths allow for wide performance |
| operation. Explosion proof motors are available too, as | | | | capacities ranging from 500 to 105,000 cfm (900 - |
| well as sliding dampers, various mounting options, | | | | 170,000 m3/hour) and pressures up to 9 in. w.g. |
| additional sound isolation. | | | | |