Empire Comfort Systems DVLXG75BP90N-1 Installer's Manual page 41

Vertical Installation:
Before installing the duct vent fan vertically, framing must be in
place to support the full weight of the unit. On a standard 16"
span the fan can be fixed as seen in figure directly below.
14.5"
Looking from above the spring placement should be similar to
figures shown below. Ensure that the fan is suspended and no
parts of the fan or ducting touch the framing.
DUCT VENT INSTALLATION
16"
18"
When installing the ducting vertically, keep the ducting fully
extended and held in place with bracing at 4ft spacings.
VERTICAL SUPPORTS
4ft Spacing
MINIMUM BEND RADII FOR DUCTING
To keep maximum flow within the ducted heat system, all bends
should maintain the minimum bend radii.
Duct
Bracing
90° Bend (Ø6" Ducting)
Duct
Bracing
90° Bend (Ø10" Ducting)
16"
16"
25"
25"
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