Bedienungsanleitung Constructa CD22130 (Seite 36 von 56) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Spanisch, Schwedisch)

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Before installation

ṇ For exhaust air mode always cut out

the protective grid in the air connector.

With exhaust mode, a backwash valve

should be installed unless it is already in -

corporated in the exhaust pipe or wall box.

If a backwash valve is not included with

your appliance, your dealer can supply you

with one (see accessories).

Installation backwash valve:

Insert the backwash valve in the mounting

openings on the air connector.

If the exhaust air is being routed

through the outside wall, a telescopic

wall box should be used.

Connecting to Ø100 mm exhaustair duct

Attach the reducing adapter (enclosed or

available from specialist dealer) to the air

outlet. Attach the exhaust-air duct to the

adapter.

Connecting to Ø120 mm exhaustair duct

Attach the exhaust-air duct directly to the

air outlet.

Exhaust-air mode

The exhaust air is discharged upwards

through a ventilation shaft or directly

through the outside wall into the open.

Exhaust air must not be discharged via a

smoke or exhaust gas flue which is already

in use or via a shaft which is used for venti-

lating rooms in which fireplaces are located.

Discharge exhaust air in accordance

with official and statutory regulations

(e.g. national building regulations).

Discharge of air into smoke or exhaust air

flues which are not in use requires the con-

sent of a heating engineer.

If the extractor hood is operated in

exhaust-air mode at the same time

as a flue-type heater

(e.g. gas, oil or

solid-fuel heater, instantaneous water

heater, boiler),

ensure that there is an

adequate air supply which the heater

requires for combustion.

Safe operation is possible provided that the

partial vacuum in the room in which the

heater is installed does not exceed 4 Pa

(0.04 mbar).

This can be achieved if the combustion air

is able to flow through non-lockable open-

ings, e.g. in doors, windows and in con-

junction with an air supply/air-intake wall

box or by other technical procedures such

as reciprocal interlocking.

If the air intake is inadequate, there is a

risk of poisoning from combustion

gases, which are drawn back into the

room.

An air-intake/exhaust-air wall box by itself

is no guarantee that the limiting value will no

be exceeded.

Note: When assessing the overall require-

ment, the combined ventilation system for

the entire household must be taken into

consideration. This rule does not apply to

the use of cooking appliances, such as

hobs and gas cookers.

The extractor hood can be used without

restriction in circulating air mode – with an

activated carbon filter.

Optimum efficiency of the extractor

hood:

q Short, smooth exhaust pipe.

q As few bends as possible.

q Pipe diameter as large as possible (ideal-

ly 150 mm dia.) and wide pipe bends.

If long, rough exhaust-air pipes, many

pipe bends or smaller pipe diameters are

used, the air extraction rate will no

longer be at an optimum level and there

will be an increase in noise.

Round pipes

Short exhaust air pipe:

inside diameter min. 120 mm,

Longer exhaust air pipe:

inside diameter min. 150 mm.

Flat ducts must have an inside

cross-section equivalent

to that of

the round pipes.

There should be no sharp bends.

ø 120 mm dia. approx. 113 cm

ø 150 mm dia. approx. 177 cm

q If pipe diameters differ, insert sealing

strip.

q Ensure that there is an adequate air sup-

ply for exhaust air mode.

120

150

120

150

120

150

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