Miele PUR 88 W Operating And Installation Instructions - Page 30
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Installation
Air venting
WARNING: Danger of toxic fumes.
Gas cooking appliances release
carbon monoxide that can be
harmful or fatal if inhaled.
To reduce the risk of fire and to
properly exhaust air, the exhaust
gases extracted by the hood should
be vented outside of the building only.
Do not vent exhaust air into spaces
within walls or ceilings or in attics,
crawl spaces or garages.
To reduce the risk of fire, only use
metal ductwork.
Please read and follow the
"IMPORTANT SAFETY
INSTRUCTIONS" to reduce the risk of
personal injury. Follow all local building
codes when installing the hood.
Only use smooth pipes or flexible
ducting made from approved non-
flammable materials for ducting.
To achieve the most efficient air
throughput with the lowest noise levels,
please note the following:
- The diameter of the vent ducting
must not be smaller than the cross-
section of the vent collar (see
"Appliance dimensions"). This applies
in particular when using flat ducting.
- The ducting should be as short and
straight as possible.
- Only use wide radius bends.
- The ducting must not be kinked or
compressed.
- All connections must be strong and
airtight.
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- If the ducting has flaps, these must
be opened whenever the ventilation
hood is switched on.
Any constriction of the air throughput
will reduce extraction performance
and increase operating noise.
Ventilation stack
If the exhaust air is to be ducted into a
flue, the ducting must be directed in the
flow direction of the flue.
If the flue is used by several ventilation
units, the cross-section of the flue must
be large enough.
Non-return flap
Use a non-return flap in the vent
system.
A non-return flap ensures that when the
ventilation hood is not in operation, the
duct is closed to prevent unwanted
exchange of room air and outside air.
If the exhaust is ducted through an
outside wall, a Miele wall vent or roof
vent (available as an optional
accessory) is recommended. Both of
these have a built-in non-return flap.
If the on-site vent system does not have
a non-return flap, one is supplied with
the ventilation hood.
The non-return flap is installed in the
exhaust socket of the fan.