4801-5327 Rev 1-15
Mega-Flow External Damper Fan - Unassembled
Page 15 of 24
6.
Attach Cone
a.
Install the cone mounting brackets to the fan housing using two 5/16-18 x 1/2” carriage bolts in each mounting
bracket.
NOTE:
Make sure bottom panel with drain hole is closest to the ground.
b.
Bend the mounting brackets back slightly to help clear the area of the cone edges. Mount cone to fan. Hang the
centered slot in the small end of the cone over the Pim screw mounted on the Fan housing. See
Figure 12
.
Screw can be fastened with 1/4"-20 lock nut if necessary (not included).
c.
Slide the cone over the outside of the orifice throat. Using four 1/4-20 x ¾” Truss Head Philips Screws and ¼-
20 lock nuts, insert the bolts from the inside of the cone through the mounting brackets. See
Figure 13
.
d. Tighten ¼-20 cone assembly nuts and bolts.
Cone Mounting
Brackets
Cone attaches to the
Cone Support Bracket
over the pim screw.
Figure 11:
Install Cone
Mounting Brackets
Figure 12
Top and Bottom cone
bracket bolts are inserted
from inside the cone.
NOTE for MF-36ED Cone:
Put bolts through second
hole
of
cone
mounting
brackets.
