Alliance Laundry Systems SFG109*F User Manual

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Installation
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Exhaust System
For best drying results, recommended maximum 
length of exhaust system is shown in Table 1.
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 
12 inches (30.5 cm) above the ground. Larger 
clearances may be necessary for installations where 
heavy snowfall can occur.
Table 1 
Number of 
90° Elbows
Weather Hood Type
Recommended
Use Only for Short Run Installations
Maximum length of 4 in. (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 in. (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.
4 in.
(10.2 cm)
4 in.
(10.2 cm)
D673I
D802I
2-1/2 in.
(6.35 cm)