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en - Installation notes
1. Total pipe length PDR 914/514
Steel pipe
Steel pipe
Steel pipe
90° concertina pipe elbow
(r = 2d)
90° concertina pipe elbow
(r = 2d)
90° elbow (r = d)
Total duct length
* Substitute pipe lengths according to Table 1
2. Pipe diameter depending on total pipe length
Total pipe length = 46' 11" (14.3 m)
Maximum permissible total pipe length 62' 4" (19 m) = Ø 6" (150 mm) internal pipe diame-
ter (see Table 2)
3. Total pipe length PDR 918/518
Steel pipe
Steel pipe
90° concertina pipe elbow
(r = 2d)
45° elbow (r = 2d)
90° elbow (r = d)
Total duct length
* Substitute pipe lengths according to Table 1
4. Pipe diameter depending on total pipe length
Total pipe length = 32' 1 13/16" (9.8 m) (PDR 918/518)
Maximum permissible total pipe length 49' 2" (15 m) = Ø 6" (150 mm) internal pipe diame-
ter (see Table 2)
5. Total duct diameter
According to Table 3
Duct diameter PDR 914/514
Duct diameter PDR 918/518
Total cross section A
Total duct diameter
10
L1 = 6' 6" (2.0 m)
L2 = 6' 6" (2.0 m)
L4 = 6' 6" (2.0 m)
B1 = 10' 6" (3.2 m)*
B2 = 10' 6" (3.2 m)*
B5 = 6' 3" (1.9 m*)
46' 11" (14.3 m)
L3 = 6' 6" (2.0 m)
L4 = 6' 6" (2.0 m)
B3 = 10' 6" (3.2 m)*
B4 = 2' 3" (0.7 m)*
B5 = 6' 2" (1.9 m)*
32' 1 13/16" (9.8 m)
Ø 6" (150 mm)
= 27 3/8"² (177 cm²)
Ø 6" (150 mm)
= 27 3/8"² (177 cm²)
= 54 13/16"² (354 cm²)
= Ø 8 11/16" (220 mm)
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