Alliance Laundry Systems Stacked Clothes Dryer IMPORTANT: Keep exhaust duct as short as possible, NOTE: Be certain old ducts are cleaned before installing your new dryer unit

Installation

Exhaust System

IMPORTANT: Keep exhaust duct as short as possible.NOTE: Be certain old ducts are cleaned before installing your new dryer unit.

For best drying results, recommended maximum length of exhaust system is shown in Table 2.

To prevent backdraft when dryer unit is not in operation, outer end of exhaust pipe must have a weather hood with hinged dampers (obtain locally).

NOTE: Weather hood should be installed at least 12 inches (30.5 cm) above the ground. Larger clearances may be necessary in areas where heavy snowfall can occur.

Number of		Weather Hood Type
90° Elbows	Recommended	Use Only for Short Run Installations

	4"	4"
		(10.2 cm)	2-1/2"
	(10.2 cm)
			(6.35 cm)
		D673I		D802I
	Maximum length of 4" (10.2 cm) diameter rigid metal duct
0	65 feet (19.8 m)		55 feet (16.8 m)
1	55 feet (16.8 m)		47 feet (14.3 m)
2	47 feet (14.3 m)		41 feet (12.5 m)
3	36 feet (11.0 m)		30 feet (9.1 m)
4	28 feet (8.5 m)		22 feet (6.7 m)
	Maximum length of 4" (10.2 cm) diameter flexible metal duct
0	45 feet (13.7 m)		35 feet (10.7 m)
1	35 feet (10.7 m)		27 feet (8.2 m)
2	30 feet (9.1 m)		21 feet (6.4 m)
3	25 feet (7.6 m)		17 feet (5.2 m)
4	20 feet (6.1 m)		15 feet (4.5 m)

NOTE: Deduct 6 feet (1.8 m) for each additional elbow.

Table 2

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