Fisher and Paykel DE62T27DW2 AeroSmart LED Models Installation Instructions &a - Page 17

Maximum length of exhaust duct, Preferred 4 Hoods

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Installation instructions 15 Maximum length of exhaust duct Preferred 4" Hoods Number of 90˚ elbows/bends 0 1 2 3 4 When you have a 4" (100 mm) Hood Maximum length of 4" diameter metal duct. Rigid Thick Wall Flexible Metal (fully extended) 64 ft 19.5 m 8 ft 2.4 m 54 ft 16.5 m 8 ft 2.4 m 44 ft 13.4 m 8 ft 2.4 m 35 ft 10.6 m 8 ft 2.4 m 27 ft 8.2 m 8 ft 2.4 m Acceptable 2 ½" Hood Number of 90˚ elbows/bends 0 1 2 3 4 When you have a 2 ½" (60 mm) Hood Maximum length of 4" diameter metal duct. Rigid Thick Wall Flexible Metal (fully extended) 58 ft 17.6 m 8 ft 2.4 m 48 ft 14.6 m 8 ft 2.4 m 38 ft 11.5 m 8 ft 2.4 m 29 ft 8.8 m 8 ft 2.4 m 21 ft 6.4 m 8 ft 2.4 m For exhaust systems not covered by the exhaust duct length charts (such as multiple unit hook-ups, plenums, and power-assist fans), call our Customer Care Center: TOLL FREE 1.888.9.FNP.USA (1.888.936.7872).

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15
Installation instructions
Maximum length of exhaust duct
Preferred 4” Hoods
When you have a 4” (100 mm) Hood
Maximum length of 4” diameter metal duct.
Number of 90˚
elbows/bends
Rigid
Thick Wall Flexible Metal
(fully extended)
0
64 ft
19.5 m
8 ft
2.4 m
1
54 ft
16.5 m
8 ft
2.4 m
2
44 ft
13.4 m
8 ft
2.4 m
3
35 ft
10.6 m
8 ft
2.4 m
4
27 ft
8.2 m
8 ft
2.4 m
Acceptable 2 ½” Hood
When you have a 2 ½” (60 mm) Hood
Maximum length of 4” diameter metal duct.
Number of 90˚
elbows/bends
Rigid
Thick Wall Flexible Metal
(fully extended)
0
58 ft
17.6 m
8 ft
2.4 m
1
48 ft
14.6 m
8 ft
2.4 m
2
38 ft
11.5 m
8 ft
2.4 m
3
29 ft
8.8 m
8 ft
2.4 m
4
21 ft
6.4 m
8 ft
2.4 m
For exhaust systems not covered by the exhaust duct length charts (such as multiple unit
hook-ups, plenums, and power-assist fans), call our Customer Care Center:
TOLL FREE 1.888.9.FNP.USA (1.888.936.7872).