Wolf VW30S Manuel d'utilisateur Page 10

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DETERMINE THE DUCT RUN
EQUIVALENT DUCT LENGTH
DUCTING SIZE
EQUIVALENT 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 EQUIVALENT LENGTH
Step 1: Determine the Duct Run
Equivalent duct length. | Determine the equivalent length of
the duct run using the equivalent duct lengths for commonly
used ducting listed below. Follow these steps and use the
chart to calculate the equivalent duct length:
1 Compute the length of all straight ducting.
2 Compute the equivalent duct length of all elbows, transi-
tions and caps.
3 Add equivalent lengths for all sections of the duct run.
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