Amana MMV1153BA Instrução De Instalação

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.

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.

For satisfactory air movement, the total duct length of 
3¼" x 10" rectangular or 6" diameter round duct 
should not exceed 140 equivalent feet.

 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 shows 
you how to calculate total equivalent ductwork length 
using the approximate feet of equivalent length of 
some typical ducts.

* IMPORTANT: If a rectangular-to- 
  round transition adaptor is used, the 
  bottom corners of the damper will 
  have to be cut to fit, using the tin 

snips, in order to allow free movement of the damper. 

Equivalent lengths of duct pieces are based on actual 
tests and reflect requirements for good venting 
performance with any vent hood.

Rectangular-to-Round 
Transition Adaptor*

5 Ft.

x

(  )

=

                      Ft.

Wall Cap 

40 Ft.

x

(  )

=

                      Ft.

90° Elbow 

10 Ft.

x

(  )

=

                      Ft.

45° Elbow 

5 Ft.

x

(  )

=

                      Ft.

90° Elbow 

25 Ft.

x

(  )

=

                      Ft.

45° Elbow 

5 Ft.

x

(  )

=

                      Ft.

Roof Cap

24 Ft.

x

(  )

=

                      Ft.

Straight Duct 6" Round or 
3¼" x 10" Rectangular

1 Ft.

x

(  )

=

                      Ft.