Haier HMV1630DBWW HMV1630 Installation Guide - Page 7

Exhaust Connection, Maximum Duct Length, Elbows, Transitions, Wall, And Roof Caps, Etc.

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EEnnglisshh NOTE: If you need to install ducts, note that the total duct length of 31⁄4" x 10" (8.2 x 25.4 cm) rectangular or 6" (15.2 cm) diameter round duct should not exceed 120 equivalent feet (36.5 m). 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 31⁄4" x 10" (8.2 x 25.4 cm) rectangular duct. If a round duct is required, a rectangular-to-round transition adaptor must be used. Do not use less than a 6" (15.2 cm) diameter duct. MAXIMUM DUCT LENGTH: For satisfactory air movement, the total duct length of 31⁄4" x 10" (8.2 x 25.4 cm rectangular or 6" (15.2 cm) diameter round duct should not exceed 120 equivalent feet (36.5 m). 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 shows you how to calculate total equivalent ductwork length using the approximate feet of equivalent length of some typical ducts. DUCT PIECES Rectangular-to-Round Transition Adaptor* EQUIVALENT NUMBER EQUIVALENT LENGTH X USED = LENGTH 5 Ft. (1.5m) x ( ) = Ft. or m Wall Cap 40 Ft. (12.2m) x ( ) = Ft. or m 90° Elbow 10 Ft. (3 m) x ( ) = Ft. or m 45° Elbow 5 Ft. (1.5m) x ( ) = Ft. or m 90° Elbow 25 Ft. (7.6 m) x ( ) = Ft. or m 45° Elbow 5 Ft. (1.5m) x ( ) = Ft. or m Roof Cap 24 Ft. (7.3 m) x ( ) = Ft. or m Straight Duct 6" (15.2 cm) Round or 31⁄4" x 10" (8.2 x 25.4 cm) Rectangular 1 Ft. (0.3 m) x (1) = Total Ductwork = Ft. or m Ft. or m * 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. NOTE: For back exhaust, care should be taken to align exhaust with space between studs, or wall should be prepared at the time it is constructed by leaving enough space between the wall studs to accommodate exhaust. 6

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6
English
NOTE: If you need to install ducts, note that the total duct length of 31⁄4” x 10” (8.2
x 25.4 cm) rectangular or 6” (15.2 cm) diameter round duct should not exceed 120
equivalent feet (36.5 m).
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.
DUCT PIECES
EQUIVALENT
NUMBER
LENGTH
X USED
=
EQUIVALENT
LENGTH
Rectangular-to-Round Transition
Adaptor*
5 Ft. (1.5m)
x
(
)
=
Ft. or m
Wall Cap
40 Ft. (12.2m) x
(
)
=
Ft. or m
90° Elbow
10 Ft. (3 m)
x
(
)
=
Ft. or m
45° Elbow
5 Ft. (1.5m)
x
(
)
=
Ft. or m
90° Elbow
25 Ft. (7.6 m) x
(
)
=
Ft. or m
45° Elbow
5 Ft. (1.5m)
x
(
)
=
Ft. or m
Roof Cap
24 Ft. (7.3 m) x
(
)
=
Ft. or m
Straight Duct 6“ (15.2 cm)
Round or 31⁄4“ x 10“ (8.2 x
25.4 cm) Rectangular
1 Ft. (0.3 m)
x
(1)
=
Ft. or m
Total Ductwork =
Ft. or m
EXHAUST CONNECTION:
The hood exhaust has been designed to
mate with a standard 31⁄4” x 10” (8.2 x
25.4 cm) rectangular duct. If a round duct
is required, a rectangular-to-round transition
adaptor must be used.
Do not use less than a
6” (15.2 cm) diameter duct.
MAXIMUM DUCT LENGTH:
For satisfactory air movement, the total
duct length of 31⁄4” x 10” (8.2 x 25.4 cm
rectangular or 6” (15.2 cm) diameter round
duct
should not exceed 120 equivalent feet
(36.5 m).
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 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.
NOTE: For back exhaust, care should be taken to align exhaust with space between studs, or wall
should be prepared at the time it is constructed by leaving enough space between the wall studs to
accommodate exhaust.