Installation Instructions
NOTE: If you need to install ducts, note that the total
duct length of 3¼" x 10" rectangular or 6" diameter
round duct should not exceed 140 equivalent feet.
Outside ventilation requires a HOOD EXHAUST DUCT.
Read the following carefully.
NOTE: It is important that venting be installed using
the most direct route and with as few elbows as possible.
This ensures clear venting of exhaust and helps prevent
blockages. Also, make sure dampers swing freely and
nothing is blocking the ducts.
Exhaust connection:
The hood exhaust has been designed to mate with
a standard 3¼" x 10" rectangular duct.
If a round duct is required, a rectangular-to-round
transition adaptor must be used. Do not use less than
a 6" diameter duct.
Maximum duct length:
For satisfiactory air movement, the total duct length of
3¼" x 10" rectangular or 6" diameter round duct should
not exceed 140 equivalent feet.
Elbows, transitions, wall and roof caps,
etc., present additional resistance to airflow and are
equivalent to a section of straight duct which is longer
than their actual physical size. When calculating the
total duct length, add the equivalent lengths of all
transitions and adaptors plus the length of all straight
duct sections. The chart below sho,a_ you how to calculam
total equivalent ductwork length using the approximam
feet of equivalent length of some typical ducts.
EQUIVALENT NUMBER EQUIVALENT
DUCT PIECES LENGTH x USED = LENGTH
Rectangular4o-Round 5 Ft. x ( ) Ft.
TransitionAdaptor*
.._ WallCap 40Ft. x ( ) Ft.
90° Elbow 10Ft. x ( ) Ft.
45° Elbow 5 Ft. x ( ) Ft.
90° Elbow 25Ft. x ( ) Ft.
J 45° Elbow 5 Ft. x ( ) Ft.
RoofCap 24Ft. x ( ) Ft.
StraightDuct6" Roundor 1 Ft. x ( ) Ft.
3_A" x 10" Rectangular
Total Ductwork = Ft.
* IMPORTANT: ira iectangtllat_lo-round Ilansitlon Eqllivalent lengths of(hlt-t pieces at-(" based on actual tests
adaf)tor is !ist-'([, the bottom corllefs of the dall_per arid i-eflect req/llrenlellts _or good Velltillg perf_i-lllarl_e with
_a'ill have to be cut to fit, t_sing the tin snips, in any _ent hood.
order to aIIo_ t_'ee movement of the damper.
5
To Next Page
Loading...
Need help?
General
