Thermador HPCB48NS Design Guide Volume 4 - 2014 - Page 11

Equivalent, Lengths, Commonly, Transitions

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EQUIVALENT DUCT LENGTHS FOR COMMONLY USED TRANSITIONS DUCT PIECE 0 Smooth Straight 3 1/4" x 10" Straight 3 1/4" x 14" Straight 90° Elbow Round 45° Elbow Round 3 1/4" x10" 90° Elbow Round 3 1/4" x 10" 45° Elbow Round 3 1/4" x 10" Flat Elbow Round to 3 1/4" x 10" 3 1/4" x 10" to Round Round to 3 1/4" x 10" 90° Elbow SIZE OF DUCT EQUIVALENT PIECE (IN.) LENGTH (FT.) 6 1.2 7 0.95 8 0.7 10 0.6 N/A 1 N/A 0.7 6 12 7 8 8 6 6 5 7 4 8 3 N/A 5 N/A 15 N/A 20 6 1 7 1 6 5 7 3 6 10 7 8 DUCT PIECE 3 1/4" x 10" to Round 90° Elbow SIZE OF DUCT EQUIVALENT PIECE (IN.) LENGTH (FT.) 6 10 7 5 3 1/4" x 10" Center Reverse N/A 15 Elbow Left 3 1/4" x 10" Center Reverse N/A 25 Elbow Right 3 1/4" x 10" Left Reverse Elbow N/A 15 3 1/4" x 10" Right Reverse N/A 25 Elbow 6 2 Round Wall Cap 7 2 8 2 10 2 C 7 Round Roof Cap 6 2 7 2 8 2 2' Long III IIII; 1111 3 1/4" x 10" Flex N/A 20 o" 3 1/4" x 10" to Round 10 1 7" Inline Backdraft 7 Damper x 10" Roof Jack N/A and Shutter NOTE: These commonly used installation parts can be purchased at a local hardware store. Thermador does not manufacture all these parts. 142

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EQUIVALENT
DUCT
LENGTHS
FOR
COMMONLY
USED
TRANSITIONS
DUCT
PIECE
0
SIZE
OF
DUCT
EQUIVALENT
PIECE
(IN.)
LENGTH
(FT.)
SIZE
OF
DUCT
EQUIVALENT
DUCT
PIECE
PIECE
(IN.)
LENGTH
(FT.)
6
1.2
3
1
/
4
"
x
10"
6
10
to
Round
Smooth
7
0.95
90°
Elbow
7
5
Straight
8
0.7
3
1
/
4
"
x
10"
Center
Reverse
N/A
15
10
0.6
Elbow
Left
3
1
/
4
"
x
10"
3
1
/
4
"
x
10"
Straight
N/A
1
Center
Reverse
N/A
25
Elbow
Right
3
1
/
4
"
x
14"
Straight
N/A
0.7
3
1
/
4
"
x
10"
Left
Reverse
Elbow
N/A
15
6
12
3
1
/
4
"
x
10"
Right
Reverse
N/A
25
90°
Elbow
Round
7
8
Elbow
2
6
8
6
45°
Elbow
Round
6
7
5
4
Round
Wall
C
7
2
ap
2
8
10
2
8
3
6
2
3
1
/
4
"
x10"
90°
Elbow
N/A
5
C
7
Round
Round
Roof
Cap
7
2
3
1
/
4
"
x
10"
8
2
45°
Elbow
N/A
15
Round
2'
Long
III
IIII
;
111
1
3
1
/
4
"
x
10"
N/A
20
Flex
3
1
/
4
"
x
10"
Flat
Elbow
N/A
20
3
1
/
4
"
x
10"
o"
10
1
to
Round
Round
to
6
1
3
1
/
4
"
x
10"
7
1
7"
Inline
Backdraft
7
Damper
3
1
/
4
"
x
10"
to
Round
6
5
x
10"
7
3
Roof
Jack
N/A
and
Shutter
Round
to
6
10
3
1
/
4
"
x
10"
90°
Elbow
7
8
142