Installationsplan / Installation plan: PT 8251/8253/8255/8257
Datum / Date: 12.01.2011
Seite / Page: 9
Gas connection
Nominal heat rating
kW
15
Machine-side connection according to ISO 7-1
Inch
½“
Length of connection hose (supplied)
mm
350
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
Connection thread (on site)
Inch
½" internal thread
Connection pressure according to DIN EN 437
cf. operating and installation instructions
Liquid gas
Connection thread (on site)
Inch
½" internal thread
or alternatively:
On-site connection with high-precision steel pipe accord-
ing to DIN 2391/DIN2393, with smooth pipe end,
DN
12
Min. connection length
mm
40
Connection sleeve ½" × ⅜" and ⅜" threaded union × DN
12 for steel pipe supplied with machine.
⅜" × DN 12 threaded union for steel pipe.
Connection pressure according to DIN EN 437
cf. operating and installation instructions
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)
m³/h
560
Nominal air flow (PT 8251/8253/8255 only)
m³/h
510
Max. permissible pressure loss
Pa
200
Connection on machine side (ext. diameter)
mm
150
Connection pipe provided on site (int. diameter)
mm
150
Max. temperature
°C
80
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
Unobstructed air intake into room recommended (corres-
ponding to 3 times the vent cross-section of machine)
cm²
531
A sufficient supply of fresh air should be ensured to
replace the air extracted.
Alternative connection: Ducted air intake (from outside
building)
Connector on machine (int. diameter)
mm
161
Connection pipe provided on site (ext. diameter)
mm
160
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.
