Miele T 1576 operating instructions Calculate the effective duct length

INSTALLATION INSTRUCTIONS

Calculate the effective duct length

The overall duct length will determine the duct diameter.

^Measure the actual duct length needed:

1.Establish the number of elbows or bends necessary, noting the type of bend, angle and radius involved (see, Table 1).

2.Add the additional duct length as specified in Table 1 to the actual duct length to get the effective duct length.

3.The necessary duct diameter can then be found in Table 2.

Note:

Drying times and energy consumption remain unaltered for 4" (100 mm) duct up to a total length of 66 ft. (20 m). Lon- ger ducts may lead to slight increases, but, the function will not be impaired as long as the necessary duct diameter is used (Table 2).

Table 1

Type	Angle	Radius		Additional
of bend				duct length
		inch	cm	inch	cm
Flexible	90 °	up to	40.6	20"	50.8
metal duct		16"
	45 °	up to	40.6	12"	30.5
		16"
Smooth	90 °	4"	10	14"	35.6
metal duct
Elbow 90°	90 °			90"	228.5
sharp;
no radius
Concertina	90 °	8"	20.3	28"	71.1
bend
Wall vent kit				142"	360.7
with louvres
or
window
vent kit
Wall vent kit				99"	251.5
with flap or
window
vent kit
Exhaust				193"	490.2
connection
left side

Table 2

Internal diameter or			Effective duct
edge length			length
inches	mm		ft	m
4"	100	0	- 66	0 - 20
5"	125	66	- 100	20 - 30
6"	150	100 - 140		30 - 42.7

27