Substitute Duct Lengths - Miele PDR 514 Operating And Installation Instructions

In upward exhaust ducting systems, a condensate drain must be fitted to the bottom. The
condensate must be drained via a water collection tray or a floor drain positioned in an ap-
propriate location.
If air is being directed from multiple appliances into a combined line (exceptional circum-
stances), a non-return device (non-return flap) must be installed in each separate line to
prevent backflow.
To make subsequent cleaning of the pipes easier, cleaning flaps should be fitted to elbows
wherever possible.
The on-site exhaust ducting and venting to the outdoors must be regularly checked for lint
deposits and cleaned if necessary.

Substitute duct lengths

Type of el- Type
bow
90° elbow
45° elbow
90° elbow
45° elbow
90° concertina duct elbow
45° concertina duct elbow
90° segmented elbow
(3 welded seams)
90° elbow, Westaflex duct-
ing
45° elbow, Westaflex duct-
ing
Non-return flap
Table 1
PDR
914/514 918/518
r = 2d
r = 2d
r = d
r = d
r = 2d
r = 2d
r = 2d
r = 2d
r = 4d
r = 2d
r = 4d
39' 4 7/16" 39' 4 7/16"
(12 m)
PDR PDR
922/522
3' 7 5/16" (1.1 m)
2' 3 9/16" (0.7 m)
6' 2 13/16" (1.9 m)
3' 7 5/16" (1.1 m)
10' 6" (3.2 m)
6' 6 3/4" (2 m)
3' 11 1/4" (1.2 m)
3' 11 1/4" (1.2 m)
2' 11 7/16" (0.9 m)
3' 3 3/8" (1 m)
2' 7 1/2" (0.8 m)
22' 11 9/16" 22' 11 9/16"
(12 m) (7 m)
Installation
PDR PDR
928/528 944/544
21' 3 7/8"
(7 m) (6.5 m)
31