Exhaust - Venting - Miele T 1520i Operating Manual

Table II
Effective duct
length
0 - 21 yd
21 - 33 yd
33 - 47 yd
47 - 66 yd
Flexible ducting has been used for the
following example.
Internal diameter or
edge length
4''
4 5/16''
4 3/4''
5''

Exhaust - venting

Example:
Exhaust connection, left . . . . . . 19 3/4'
Length (L) . . . . . . . . . . . . . . . . . . . . . 2'
Lower radius (R) . . . . . . . 15 3/4'' 1 1/4'
Height (H) . . . . . . . . . . . . . . . . . . . . . 5'
Upper radius (R) . . . . . . . . 7 7/8'' 1 3/4'
Wall pipe with louvred vent . . . . 12 1/2'
Effective duct length . . . . . . . . . 42 1/4'
Result:
A duct diameter of 4'' is adequate
since the effective length is less than
21 yd as specified in Table II.
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