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Location and Mounting
1.
Determine the fan package location on the enclosure. This location depends on the available space
within the enclosure and on the airflow pattern desired. Allow clearance for the enclosure and electrical
panel and mounting studs. Follow the general fan package application guidelines outlined in the
Hoffman catalog.
2.
UL Arc Barrier Requirement: If a ventilation opening is less than 12 inches (305 mm) from an arcing
part, a barrier shall be interposed between the ventilation opening and a possible source of arcing,
such as a power−circuit switch, a fuse, the vent openings of a circuit breaker, a conductor, or an
overload relay.
A barrier shall be of such dimension and so located that any straight line drawn from any arcing part
past the edge of the barriers intersects a point in the ventilation opening plane that is at least 0.25
inches (6.35 mm) outside the edge of the ventilation opening.
A barrier shall be secured in place by mechanical means such as mechanical fasteners.
3.
Clear all wires and components out of the way and make the proper size cutout. See the following hole
pattern and table.
4.
If electrical grounding is required, ground the fan housing using a lead wire sized per N.E.C. standards.
Use the green grounding screw provided to connect the separate ground wire (not supplied) to the fan
grounding pad.
5.
Establish the airflow direction through the fan. Arrows marked on the fan housing indicate the airflow
direction and the blade rotation.
6.
Guide the lead wires and grounding wire through the wire access hole in the rear wall of the plenum.
(models TFP61, TFP62, TFP101, TFP102, TFP624 only)
7.
Mount the fan to the plenum with the supplied thread cutting screws and washers.
8.
For models TFP41, TFP42, TFP424 only, mount the steel wire finger guard to the fan with the supplied
thread cutting screws.
9.
Insert the assembled fan package into the enclosure cutout as shown.
10.
Secure the fan package in place using the supplied screws, lockwashers, and nuts.
11.
Snap in the finger guard and insert the filter over the guard. (models TFP61, TFP62, TFP101, TFP102,
TFP624) Place the filter inside the plenum. (models TFP41, TFP42, TFP424)
12.
Snap the composite grille over the fan package.
87569810
Barrier Material
Steel
Aluminum
Polycarbonate
Other Non−metallic
E 2005 Hoffman Enclosures Inc.
Minimum Thickness
0.053 in.
0.075 in.
0.125 in.
0.250 in.
1.35 mm
1.9 mm
3.2 mm
6.35 mm
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