Ventilation made easy, Step 1: determine the duct run – Wolf Appliance Company 1200 User Manual
Page 9
Ventilation Made Easy
9
wolfappliance.com/specs
Step 1: Determine the Duct Run
Determining the equivalent duct length.
Determine the
equivalent duct length for your installation using the
equivalent duct lengths for commonly used ducting. Refer
to the chart on the following page. The equivalent duct
length is calculated as follows:
1)
Compute the length of all straight ducting.
2) Compute the equivalent duct length of all elbows,
transitions and caps.
3) Add equivalent lengths for all sections of the duct run.
EQUIVALENT DUCT LENGTHS
EQUIVALENT
DUCTING
SIZE
LENGTH
QUANTITY
TOTAL
1' (.3 m) STRAIGHT DUCTING
6"
(152)
round
4'
(1.2 m)
8"
(203)
round
1'
(.3 m)
10"
(254)
round
.3'
(.1 m)
3
1
/
4
"
(83)
x 10"
(152)
4'
(1.2 m)
90° ELBOW
6"
(152)
round
24'
(7.3 m)
8"
(203)
round
7'
(2.1 m)
10"
(254)
round
3'
(.9 m)
3
1
/
4
"
(83)
x 10"
(152)
12'
(3.7 m)
45° ELBOW
6"
(152)
round
12'
(3.7 m)
8"
(203)
round
4'
(1.2 m)
10"
(254)
round
2'
(.6 m)
3
1
/
4
"
(83)
x 10"
(152)
8'
(2.4 m)
ROUND TO RECTANGULAR TRANSITION
6"
(152)
round to 3
1
/
4
"
(83)
x 10"
(152)
5'
(1.5 m)
8"
(203)
round to 3
1
/
4
"
(83)
x 10"
(152)
1'
(.3 m)
3
1
/
4
"
(83)
x 10"
(152)
to 6"
(152)
round
12'
(3.7 m)
3
1
/
4
"
(83)
x 10"
(152)
to 8"
(203)
round
16'
(4.9 m)
ROUND TO ROUND TRANSITION
6"
(152)
round to 8"
(203)
round
4'
(1.2 m)
8"
(203)
round to 10"
(254)
round
1'
(.3 m)
8"
(203)
round to 6"
(152)
round
12'
(3.7 m)
10"
(254)
round to 8"
(203)
round
3'
(.9 m)
ROOF CAP OR WALL CAP
6"
(152)
round
60'
(18.3 m)
8"
(203)
round
20'
(6.1 m)
10"
(254)
round
9'
(2.7 m)
3
1
/
4
"
(83)
x 10"
(152)
60'
(18.3 m)
TOTAL