Berbel BKH 120 FO, Operating And Installation Instructions

9

Installation

6005044_0 – 04.12.2019

EN

3.3 

Requirements for individual operating modes

Further accessories may be required depending on the 
operating mode.

3.3.1 

Requirements for recirculated air mode

y

Recirculated air filter at the fan outlet.

y

Cross-section of the ventilation slot in the superstructure 
larger than 300 cm

2

.

y

Filter filling freely accessible for changing.

3.3.2 

Requirements for extracted air mode

y

Exhaust air ducting at the fan outlet.

D

“3.4 Requirements for the exhaust air ducting 
(only for extracted air mode or hybrid mode)” 
(page 9).

y

Diameter of the exhaust air ducting at least 150 mm 
(corresponds to a surface area of approx. 177 cm

2

).

y

Adequate fresh air supply is assured through the 
installation of the necessary accessories.

y

Window contact switch.

y

Wall box.

3.3.3 

Requirements for hybrid mode

y

Hybrid filter at the fan outlet.

y

Connection of the exhaust air ducting to the hybrid filter.

D

“3.4 Requirements for the exhaust air ducting 
(only for extracted air mode or hybrid mode)” 
(page 9).

y

Cross-section of the ventilation slot in the superstructure 
larger than 300 cm

2

.

y

Diameter of the exhaust air ducting at least 150 mm 
(corresponds to a surface area of approx. 177 cm

2

).

y

Filter filling freely accessible for changing.

y

Adequate fresh air supply is assured through the 
installation of the necessary accessories.

y

Window contact switch.

y

Wall box BMK-F 150.

3.4 

Requirements for the exhaust air ducting 

(only for extracted air mode or hybrid mode)

D

WARNING!

Fire hazard and asphyxiation hazard due to improper 

installation!

When using the exhaust air ducting with other devices 
or when connecting an active exhaust air channel 
(e.g. chimney), gases or smoke can be drawn into the room.

☞

Make sure that the requirements for the exhaust air 
ducting are complied with.

y

The exhaust air ducting is used exclusively by this device.

y

The exhaust air ducting is made of non-combustible 
material in accordance with DIN 4102 class 1.

y

When using a chimney as the exhaust air duct:

y

The chimney must not be used by other devices.

y

The extracted air must be introduced into the 
chimney using a 90° bend pointing upwards.

y

Approval by a master chimney sweep.

y

When routing the exhaust air ducting through the roof or 
the outside wall:

y

The cross-section must not be smaller than that of the 
fan outlet.

y

Installation of condensed water collector in the 
exhaust air ducting in order to prevent water damage 
inside the device. The condensed water collector must 
be adequately dimensioned.

The cross-section, length, type and course of the exhaust 
pipe affect the extraction efficiency. Changing the direction 
of the air too severely leads to a loss of performance and to 
noise.

To optimise the device performance:

y

Keep the exhaust air ducting as short as possible and 
route it directly to the outside. 

y

The stipulated cross-section of the exhaust air ducting is 
complied with.

D

“3.3 Requirements for individual operating modes” 
(page 9).

y

Exclusive use of ducts and bends with smooth inner 
surfaces.

In order to avoid turbulence or backpressure in the 
transported air - do not use:

y

Spiral hoses.

y

Flexible tubes.

y

Flat deflection pieces.

y

Sharp-edged exhaust air channels.

The exhaust air ducting must be in place before installing 
the device.