Fisher & Paykel DE62T27C Maximum length of exhaust duct Preferred 4 Hoods, Acceptable 2 ½ Hood

Installation instructions

Maximum length of exhaust duct

Preferred 4” Hoods

15

EN

When you have a 4” (100 mm) Hood

		Maximum length of 4” diameter metal duct.
Number of 90˚		Rigid		Thick Wall Flexible Metal
elbows/bends				(fully extended)
0	64 ft		19.5 m	36 ft	10.9 m
1	54 ft		16.5 m	31 ft	9.4 m
2	44 ft		13.4 m	27 ft	8.2 m
3	35 ft		10.6 m	25 ft	7.6 m
4	27 ft		8.2 m	23 ft	7.0 m

Acceptable 2 ½” Hood

When you have a 2 ½” (60 mm) Hood

		Maximum length of 4” diameter metal duct.
Number of 90˚		Rigid		Thick Wall Flexible Metal
elbows/bends				(fully extended)
0	58 ft		17.6 m	28 ft	8.5 m
1	48 ft		14.6 m	23 ft	7.0 m
2	38 ft		11.5 m	19 ft	5.7 m
3	29 ft		8.8 m	17 ft	5.1 m
4	21 ft		6.4 m	15 ft	4.5 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 9 367 872).