Hotpoint RVM1435BK01 Installation Insrtuctions page 5

Installation Instructions
NOTE: If wm need to install ducts, note that the total
duct lengti_ of 3V_" x 10" rectangular or 6" diameter
round duct should not exceed 140 equivalent feet.
Outside ventilation requires a HOOD EXHALIST DLICT.
Read the following careflfllv.
NOTE: It is important that venting be installed using
the most direct route and with as tew elbows as possible.
This ensures clear venting of exhaust and helps prevent
blockages. Also, make sure dmnpers swing freely and
nothing is blocking the ducts.
Exhaust connection:
The hood exhaust has been designed to mate with
a standard 3V_" x 10" rectangular duct.
If a round duct is required, a rectangulai_to-round
transition adaptor m ust be used. Do not use less than
a 6" diameter duct.
Maximum duct length:
For satisfi_ctorv air movement, the total duct length of
3¼" x ] 0" 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
equiwdent to a section of straight duct which is longer
than their actual physical size, When calculating the total
duct length, add the equiwdent lengths of all transitions
and adaptors plus the length of all straight duct sections,
The chart below shows wm how to calculate total
equiwdent ductwork length using the approximate feet
of equiwdent length of some typical ducts,
EQUIVALENT NUMBER EQUIVALENT
DUCT PIECES LENGTH x USED = LENGTH
Rectangular-to-Round 5 Ft. x ( ) = Ft.
TransitionAdaptor*
Wall Cap 40 Ft. x ( ) = Ft.
C)_ 90 ° Elbow 10 Ft. x ( ) = Ft.
45° Elbow 5 Ft. x ( ) = Ft.
90 ° Elbow 25 Ft. x ( ) = Ft.
45° Elbow 5 Ft. x ( ) = Ft.
RoofCap 24 Ft. x ( ) = Ft.
StraightDuct6" Roundor 1 Ft. x ( ) = Ft.
3W' x 10" Rectangular
Total Ductwork = Ft.
* IMPORTANT: If' a r(<tangulal_to-round transition
Equival( nl 1( ngths o_ du<t pie(( s are bas(d on aclual lests
adapt(n- is us(d, th( bottom (omers of th( damp(l and ret]( (t
re(lt/il-( m( IllS ik)F good v( llling
l)erfonnan( ( with
,,'.illhave to Ix (:Ill to fit, u'dng th( lin snips, in or&l any vent hood.
to allow ['lee lllOVel)lel]l
of
Ihe
(]Hlllpel.
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