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Gas connection
Nominal heat rating
Machine-side connection according to ISO 7-1
Length of connection hose (supplied)
Stopcock to be provided on site.
Use of gas plug connection is not permissible on account of
restricted flow volume with respect to heater rating.
Natural gas
Liquid gas
Connection to gas supply must comply with national
regulations.
Note installation instructions for gas-heated Miele tumble
dryers.
Waste air/gas
Max. nominal air flow in vented mode (PT 8257 only)
Nominal air flow (PT 8251/8253/8255 only)
Max. permissible pressure loss
Connection on machine side (ext. diameter)
Connection pipe provided on site (int. diameter)
Max. temperature
This tumble dryer is a gas-burning machine without a flow-
operated safety device with fan downstream of heat
exchanger.
Technical design: B22 (as standard)
Waste gas pipework must be pressure-tight.
Waste gas connections should be performed in accordance
with national and local regulations and may require approval.
Note installation instructions for gas-heated Miele tumble
dryers.
As relative humidity inside the vent ducting can be as high as
100%, suitable measures must be taken to prevent a
backflow of condensate into the machine.
Air intake
Standard connection: Air intake from installation site
Alternative connection: Ducted air intake (from outside
building)
Lid removal exposes live components! For safety reasons,
the pipe connected for central air intake should be at least
900 mm long and secured using two screws.
Installationsplan / Installation plan: PT 8251/8253/8255/8257
Datum / Date: 12.01.2011
Connection thread (on site)
Connection pressure according to DIN EN 437
cf. operating and installation instructions
Connection thread (on site)
or alternatively:
On-site connection with high-precision steel pipe accord-
ing to DIN 2391/DIN2393, with smooth pipe end,
Min. connection length
Connection sleeve ½" × ⅜" and ⅜" threaded union × DN
12 for steel pipe supplied with machine.
Connection pressure according to DIN EN 437
cf. operating and installation instructions
Unobstructed air intake into room recommended (corres-
ponding to 3 times the vent cross-section of machine)
A sufficient supply of fresh air should be ensured to
replace the air extracted.
Connector on machine (int. diameter)
Connection pipe provided on site (ext. diameter)
kW
15
Inch
½"
mm
350
Inch
½" internal thread
Inch
½" internal thread
DN
12
mm
40
m³/h
560
m³/h
510
Pa
200
mm
150
mm
150
°C
80
cm²
531
mm
161
mm
160
Seite / Page: 9
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