Miele TOUCHTRONIC T 9802 Operating And Installation Instructions - Page 37

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How to calculate the effective

duct length

The overall duct length will determine

the duct diameter (see the "Additional

duct lengths" table). In Canada the

exhaust duct must be 4" (102 mm) in

diameter.

^ Measure the actual duct length

needed to go from the dryer's

exhaust connection to the vent outlet:

1. Establish the number of elbows or

bends necessary, noting the type of

bend, angle and radius involved

(see the "Additional duct lengths"

table).

2. Add the additional duct length (as

derived by using the values

specified in the "Additional duct

lengths" table) to the actual duct

length to get the effective length.

Note:

Maximum effective duct lengths:

4" (100 mm) diameter

5" (125 mm) diameter

6" (150 mm) diameter

* For rigid ducting only!

Local building codes may vary.

When flexible metal duct (transition

duct) is permissible by local building

codes, the total length must not

exceed 7'10" (2.4 m).

See the "Additional duct lengths"

table for more information on

maximum duct lengths and number

of bends.

Effective duct lengths over 66 ft (20 m)

require a larger duct diameter.

Longer ducts may lead to slight

decreases in dryer efficiency if the

necessary duct diameter is not

followed.

Installation

66 ft (20 m)

115 ft (35 m)

108 ft (33 m)