FloAire Non-Welded Grease Duct Systems - Manual (Page 15)

15
Tee - Access door
45 degree elbow
Tee assembly with access door
has been used due to offset in
the duct. Access doors are used
when there is a change in direction
or where areas of duct are not accessible.
Adjustable duct
Adustable
collar
Vented curb per NFPA-96
Exhaust fan
Standard duct
The vertical support assembly
is used at the first connection
after the change of direction.
Cooking
equipment
Riser
Hood width
Exhaust
hood
The vertical support assembly is
designed for 2" to 18" clearance
from duct to non-combustable
walls.
Fan adapter plate
with ceramic gasket
Standard duct
Adjustable ducts and standard
ducts can be used to terminate
at the transition plate. The duct
is fully welded to the transition
plate ate the factory.
"V" clamp
Standard duct
This duct is designed to be installed
in application where the duct system
is a minimum of 18" to combustible
surfaces, duct installations that can not
maintain 18" minimum clearance to a
combustible surface must be insulated
using a clearance reducing, listed grease duct
insulation, see details in this guide.
Adjustable ducts are used
on runs over 100 ft to compensate
for thermal expansion. The duct will
grow approximately 1" per 100 ft of
duct length for each 100 °F exhaust vapor
temperature above the surrounding air temperature.
IMPOTANT INFORMATION
PLEASE READ BEFORE INSTALLING
Height
33" min / 48" max
Height
78"
Hood
height
See table 4
See table 2
Fig. 11 - Grease Duct Installation Guide
Grease Duct Installation:
The illustration shown provides useful information
on the installation of grease duct systems. Each
installation is specific to the application and the
job site. When duct systems are installed outside,
welded seams must be painted with corrosion
resistant high temperature paint. If you encounter
a situation not covered by this illustration, refer to
the guide or consult the factory. Remember, if the
distance to a combustible surface is less than 18
INCHES you will need to wrap the duct in a listed
duct wrap to get “ZERO CLEARANCE TO
COMBUSTIBLES”.