3
Before installation
Exhaust air operation,
Fig. 2
Exhaust air is discharged upwards
through a ventilation shaft or directly
through the outside wall into the open.
D
The exhaust air must not be dischar-
ged into a functioning smoke or exhaust
flue or into a shaft used for ventilating
rooms in which stoves are located.
When discharging air into smoke or
exhaust flues which are not in use, local
authority approval is required.
D
When the extractor hood is operated
with exhaust air at the same time as fire
installations that require a chimney
(such as gas, oil or coal-fired central
heating systems, instant water heaters
or hot-water boilers), provision must be
made for an adequate supply of air for
stove combustion.
Safe operation is possible if the under-
pressure in the room where the stove is
installed does not exceed 4 Pa (0.04
mbar).
This can be achieved if the combustion
air can flow through non-closable ope-
nings such as in doors, windows, wall
vent-boxes or other technical features
or arrangements whereby combustion
air can be replenished.
Note: In assessing this possibility, the
entire combined ventilation of the home
must be taken into consideration. This
rule does not apply to operation of coo-
king appliances such as hobs and gas
cookers.
Exhaust air routing must always comply
with local authority regulations.
If the extraction hood is used in recircu-
lating operation - with activated carbon
filter - unrestricted operation is possible.
With exhaust mode,
a backwash valve
should be installed unless it is already
incorporated in the exhaust pipe or wall
box. (Fig. 3).
If a backwash valve is not included with
your appliance, your dealer can supply
you with one (see the section on acces-
sories in the operating instructions).
Installation backwash valve:
1.
Cut out the protective grid in the air
connector, Fig. 5.
2.
Insert the backwash valve in the
mounting openings on the air
connector, Fig. 3.
If the exhaust air is being routed
through the outside wall,
a telescopic
wall box should be used, Fig. 4.
Connection between extractor hood
and telescopic wall box:
❑
With an exhaust hose or an exhaust
pipe.
Optimal efficiency of the extractor
hood:
❑
Short, smooth exhaust pipe.
❑
As few bends as possible.
❑
Pipe diameter as large as possible
and wide pipe bends.
❑
Round pipes
we recommend a min. inside diame-
ter of
120 mm.
❑
Flat ducts
must have an
inside cross-
section equivalent
to that of the round
pipes.
l
120 mm dia. approx. 113 cm
2
l
150 mm dia. approx. 177 cm
2
❑
In the case of different pipe diame-
ters,
insert sealing strip.
❑
For exhaust air operation,
ensure
that there is an adequate supply of
air.
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