3. Installation
14
PNEG-1502
54" Galvanized Butterfly Fan
Figure 3G Clipped Grill Wires
Figure 3H Spring Clip
Butterfly Assembly
1. Install the spring clips (12-0457) (2 pieces) as shown in
onto the butterfly frame.
2. The V-shaped center bar of the butterfly frame weldment should be positioned vertically, with the
bottom lining up with the slots farthest out on the cone and the top lined up with the slots farthest in
on the cone. This will give the butterfly frame weldment a slight tilt back (~ 1"). This aids the closing
of the butterfly flaps.
3. Use 1/4" x 1-1/4" bolts and nuts to fasten the butterfly frame weldment to the panels. Tighten the
1/4" nuts. Attach the springs from the doors to the spring clip and push the flaps open and they should
close automatically from the spring tension, completely sealed by the magnets on the butterfly frame
weldment assembly.
for assembly inside of cone.
4. To reduce the cone diameter from 65" to 59" side to side, clip the two (2) side wires of the grill as
shown in
on both sides. Using a rubber mallet hammer along the “
Arches
” formed on
both side panels until they flatten as shown in
. If needed, use the supplied
5/16" x 1-1/4" bolts to connect adjacent side cone panels that will meet flush.
Clip wires here
Spring clip
(12-0457)
