Alliance Laundry Systems SWD444C 30

Installation

Exhaust System

IMPORTANT: Keep exhaust duct as short as possible.

NOTE: Be certain old ducts are cleaned before installing your new unit.

For best drying results, recommended maximum length of exhaust system is shown in Table 1.

To prevent backdraft when 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 305 mm (12 inches) 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

	102 mm		102 mm


				64 mm
			(4 in.)	64 mm
	(4 in.)			(2-1/2 in.)
					D802I
			D673I






	Maximum length of 102 mm (4 in.) diameter rigid metal duct

0		19.8 m (65 ft.)		16.8 m (55 ft.)

1		16.8 m (55 ft.)		14.3 m (47 ft.)

2		14.3 m (47 ft.)		12.5 m (41 ft.)

3		11.0 m (36 ft.)		9.1 m (30 ft.)

4		8.5 m (28 ft.)		6.7 m (22 ft.)

	Maximum length of 102 mm (4 in.) diameter flexible metal duct

0		13.7 m (45 ft.)		10.7 m (35 ft.)

1		10.7 m (35 ft.)		8.2 m (27 ft.)

2		9.1 m (30 ft.)		6.4 m (21 ft.)

3		7.6 m (25 ft.)		5.2 m (17 ft.)

4		6.1 m (20 ft.)		4.5 m (15 ft.)

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

Table 1

802031