Maximum Permissible Total Ducting Length - Miele PDR 514 Operating And Installation Instructions

Installation

Maximum permissible total ducting length

Internal minimum pipe diameter
(metal ducting)
5 7/8" (150 mm)
7 1/16" (180 mm)
7 7/8" (200 mm)
Permissible counter pressure in the ex-
haust ducting
EL: electrically heated
G: gas-heated
SI/HW: steam-heated/hot water-heated
Table 2
When connected to the vent ducting through the exhaust duct of a machine, particular
care must be taken to make sure the connection is secure and air-tight.
With complex ducting with many bends and additional components, or when several dif-
ferent machines are connected to a shared duct, it is recommended that a detailed
pipework calculation is carried out by a qualified specialist.
The vent ducting must not be channeled into a chimney or flue already in use for any gas-,
coal-, or oil-burning installation. The warm and moist exhaust air is to be conducted out-
side or to a suitable venting duct over the shortest path possible. The vent ducting must
be laid so that air flow is not hindered. To achieve this, use as few bends as possible along
with short pipelines and well-made connections and transitions checked for air-tightness.
No filters or grilles may be fitted in the vent ducting.
The end of the vent ducting leading out into the open should be protected against the ele-
ments, e.g., with a downward-facing 90° bend.
 During tumble dryer operation, the room must be adequately ventilated.
32
PDR x14 PDR x18
62' 4 1/16" 49' 2 9/16"
(19 m) (15 m)
164' 1/2" (50 m) 124' 8 1/16"
(38 m)
278' 10 7/16" 213' 3 1/16"
(85 m) (65 m)
EL: EL:
0.05 psi 0.05 psi
(220 Pa) (340 Pa)
G: G:
0.04 psi 0.04 psi
(280 Pa) (290 Pa)
SI/HW: SI/HW:
- 0.03 psi
(200 Pa)
PDR x22 PDR x28
39' 4 7/16" 32' 9 11/16"
(12 m) (10 m)
101' 8 1/2" 88' 7" (27 m)
(31 m)
173' 10 5/8" 157' 5 3/4"
(53 m) (48 m)
EL: EL:
0.05 psi 0.06 psi
(350 Pa) (410 Pa)
G: G:
0.04 psi 0.04 psi
(290 Pa) (290 Pa)
SI/HW: SI/HW:
0.04 psi 0.07 psi
(310 Pa) (510 Pa)
PDR x44
32' 9 11/16"
(10 m)
78' 8 7/8"
(24 m)
130' (40 m)
EL:
0.04 psi
(310 Pa)
G:
0.03 psi
(240 Pa)
SI/HW:
0.06 psi
(390 Pa)