YORK® MIXED FLOW, INLINE FAN, MODEL MFSI
5
OPTIONS & ACCESSORIES
on the maximum operating speed of the fan’s AMCA class,
the operating temperature of the fan, and the horsepower.
Bearings shall be heavy-duty, self-aligning pillow block
type. Pillowblock bearings shall be either single row ball or
double row spherical roller type. Fans shall be equipped
with grease lines extending from the bearings to a point on
the fan exterior.
Companion Flanges
Provided as an accessory to accommodate slip connections
at the inlet or discharge when required.
Ceiling Brackets
Structural angles welded to the fan casing are provided to
accommodate rod hangers where the fan is intended to be
ceiling suspended.
Access Doors
Located over the wheel, position is determined by installa
-
tion requirements. Doors are quick-opening hinged type. All
hardware is cadmium plated to resist corrosion.
Variable Inlet Vanes
Externally mounted inlet vanes and inlet vanes that are
“nested” inside the inlet cone are available as accessories.
Suitable for manual or motorized operation. Constructed
with stainless steel rods and friction-free bearings to assure
smooth and vibrationless performance.
Weather Cover
Provided with ventilation slots, affording complete weather
-
proof protection of motor and drive for outdoor installation.
Lifting Lugs
These are a standard accessory on all YORK MFSI Inline
fans, provided for convenience and ease in handling during
installation.
Totally Enclosed Belt Guard
Protective cover surrounding the moving parts, provided for
personnel safety, are a standard accessory for MFSI fans.
Available with tachometer opening where specified.
High Temperature Package
Standard units without a weather cover are suitable for
airstream temperatures up to 200°F. Standard units with a
weather cover are suitable for airstream temperatures up to
150°F. See below for applications with elevated tempera
-
tures, including UL Smoke Control Systems
UL Smoke Control
For smoke control systems, Heat and Smoke Removal
configured fans are listed per UL for emergency smoke
removal, referencing UL705, UL793, Industrial Risk Insurers
(IRI), and Southern Building Code Congress International
(SBCCI).
The UL standard requires the fan to run at 500°F for 4 hours
(IRI) and 1000°F for 15 minutes (SBCCI) YORK Heat and
Smoke Removal configured units are listed at 500°F for 4
hours and 1000°F (300 °C) for 1 hour. The additional 45
minutes at 1000°F (300 °C) will buy precious time in the
event of a fire.
Spark Resistant Construction
Type B and C are both available in accordance with AMCA
specifications. Type B includes an aluminum wheel and
nonferrous rub ring. Type C fans have steel wheels but are
constructed with aluminum inlet cones and rub rings so that
a shift in the wheel will not allow two ferrous parts to strike.
Additional options:
•
Shaft Seals
•
Vibration Isolators
•
Drains
•
Inlet and/or Discharge Screens
•
Special Paints or Coatings
•
Special Metals such as Stainless Steel or Aluminum
Fan Arrangement 9
Arrangement 9 fans are the most versatile type of inline fan.
They can be horizontal base mounted, horizontal ceiling
hung or vertically mounted. The motor is mounted on the fan
housing, out of the airstream. Vertical units are constructed
with reinforcing end brackets for either floor or ceiling
mounting.
Base mounted Arrangement 9 MFSI Inline fans are available
in sizes 150 through 730. Ceiling hung fans and vertical
mounted fans are available from size 150 through 660.
Single Row
Ball Bearing
Bearings
Bearings shall be designed for heavy-duty service with
a minimum L10 life of 40,000 hours for Class I fans and
120,000 hours for Class II fans. This performance is based
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