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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 electrical panel and mounting studs. Follow the general fan package
application guidelines outlined in the Hoffman catalog. Note: Type 12 cooling fan
package and exhaust grille are designed to be installed on the vertical sides of the
enclosure only. Do not install these product on top of the enclosure.
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. Reference the exploded view and
note on the previous page.
6.
Guide the lead wires and the grounding wire through wire access hole in rear wall of
plenum. (models: TFP61UL12, TFP62UL12, TFP101UL12, TFP102UL12 only)
7.
Mount the fan to the plenum with the supplied thread cutting screws.
8.
Mount steel wire finger guard to fan with supplied thread cutting screws. (models:
TFP41UL12, TFP42UL12 only)
9.
Insert the assembled fan package into the enclosure cutout with the gasket located
between the plenum and enclosure wall as shown.
10. Secure the fan package in place using the supplied screws, lockwashers, and nuts.
11. For models TFP61UL12, TFP62UL12, TFP101UL12, and TFP102UL12, snap−in finger
guard and insert filter over finger guard. For models TFP41UL12 and TFP42UL12,
insert filter into plenum.
12. Insert the filter (AFLTRXXUL12) so that the white fabric side is facing into the
enclosure and the foam side is facing out.
13. Snap−on grille over fan package.
© 2018 Hoffman Enclosures Inc.
87560859
Barrier Material
Steel
Aluminum
Polycarbonate
Other Non−metallic
Minimum Thickness
0.053 in.
0.075 in.
0.125 in.
0.250 in.
PH 763 422 2211 • nVent.com/HOFFMAN
1.35 mm
1.9 mm
3.2 mm
6.35 mm
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