1
Calculate Total
Number
Equivalent
Duct Pieces
Used
= Length
5“ round,
2.7
X (
straight ‘
1
(
x
10”
straight
1
x (
5“, 90°
elbow
x ( ) =
6“, 90°
elbow
x ( ) =
5“, 45°
elbow
X (
)=
6“, 45°
elbow
x ( ) =
Flexible
Metal Offset
See Calculations
Adapter
in Step 5A
x
10”
90° elbow
X ( ) =
ft.
x
10”
45°
elbow
5fi. x ( ) =
ft.
x 10“
90° flat elbow
18
( ) =
fi.
5“
round
to
x 10”
transition
3
x (
)=
ft.
6“ round
to
x 10”
x ( ) =
ft.
Subtotal Column 1
ft.
*
Equivalent lengths of duct pieces are based
on actual tests and reflect requirements for good
performance with any downdraft
Measure and
feet of straight duct used.
Count and
the quantity of
other duct
pieces for the ‘Number
of each type.
For
efficiency, use the shortest and
straightest duct run possible, with as few
as possible. For satisfactory performance,
duct run
not exceed 100 feet
length.
Venting performance is improved by using
larger diameter
Equivalent Number
Equivalent
Duct Pieces
Used
= Length
5“ round
to
x
10”
transition
90° elbow
x ( ) =
6“ round
to
x 10”
transition
90° elbow
x (
)=
x
10”
to
6“ round
transition
5fi.
x ( ) =
ft.
x 10”
to 6“ round
transition
90° elbow
12 fi. x (
)=
Tapered
5“ round
to 6“ round
transition
6 fi.
X ( ) =
ft.
5“ round collar
to 6“ round
cap transition
13 fi. x ( ) =
ft.
5“ round
wall cap
damper
84 fi.
X ( ) =
ft.
6“ round
wall cap
with damper
21
x ( ) =
ft.
x
10”
wall cap
with damper
27
X ( ) =
ft.
6“ round,
roof cap
20
x ( ) =
ft.
6“ round,
roof vent
24
X (
)=
Subtotal Column 2 =
n.
Subtotal Column 1 =
n.
TOTAL
ft.
Should not exceed 100 feet.
is used;
the equivalent
feet values in the table should be doubled.
flexible
duct
be straight and smooth
and extended as much as possible.
DO
use
plastic
Vent initiation should not exceed 100 feet
equivalent length.
Blower is rated at 400
at 0.1 inch of water
back pressure.
37
Содержание JP383
Страница 6: ... mS OF YOm COO OP h Models JP383 JP384 JP385 6 ...
Страница 42: ...NO S 42 ...
