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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 blade rotation.
6.
Guide the lead wires and grounding wire through wire access hole in rear wall of plenum.
(models TFP61SS, TFP62SS, TFP101SS, TFP102SS only)
7.
Mount the fan to the plenum with the supplied thread cutting screws and washers.
8.
For models TFP41SS and TFP42SS, mount steel wire finger guard to fan with supplied thread
cutting screws.
9.
Insert the hex head studs through the plenum flange and push retainers onto studs to secure.
10. Insert the assembled fan package into the enclosure cutout as shown.
11. Secure the fan package in place using the supplied screws, lockwashers, and nuts.
12. Snap−in finger guard and insert filter over guard. (models TFP61SS, TFP62SS, TFP101SS, and
TFP102SS) Place the filter inside the plenum. (models TFP41SS, TFP42SS)
13. Attach stainless steel grille to the fan package with thumb screws.
87567927
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
− 7 −
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