Alliance Laundry Systems SWD439C Specifications download pdf (Page 30)

Installation

801546

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 2.

To prevent backdraft when dryer 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

30.5 cm (12 inches) above the ground. Larger

clearances may be necessary for installations where

heavy snowfall can occur.

Number of

90° Elbows

Weather Hood Type

Recommended Use Only for Short Run Installations

Maximum length of 10.2 cm (4 in.) diameter rigid metal duct

0 19.8 m (65 feet) 16.8 m (55 feet)

1 16.8 m (55 feet) 14.3 m (47 feet)

2 14.3 m (47 feet) 12.5 m (41 feet)

3 11.0 m (36 feet) 9.1 m (30 feet)

4 8.5 m (28 feet) 6.7 m (22 feet)

Maximum length of 10.2 cm (4 in.) diameter flexible metal duct

0 13.7 m (45 feet) 10.7 m (35 feet)

1 10.7 m (35 feet) 8.2 m (27 feet)

2 9.1 m (30 feet) 6.4 m (21 feet)

3 7.6 m (25 feet) 5.2 m (17 feet)

4 6.1 m (20 feet) 4.5 m (15 feet)

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

Table 2

D673I

10.2 cm

(4 in.)

10.2 cm

(4 in.)

6.35 cm

(2-1/2 in.)

D802I

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 69 70

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Alliance Laundry Systems SWD439C Specifications Page 30