15
Installation
6005737_0 – 31.03.2021
EN
3.5.7
Installing filter (with recirculating and hybrid
operation)
The BackFlow port (Ø 150 mm) is located on the fan housing
as an aid for the installation of the filter.
The filter is placed correctly when the bottom edge of the
filter is parallel to the top edge of the fan‘s housing and the
gap is approximately 3 mm wide.
Recirculated air mode
3
☞
Place the recirculated air filter on the BackFlow port from
above.
☞
Ensure that the recirculated air filter is correctly installed.
Hybrid mode
3
☞
Place the hybrid filter on the BackFlow port from above.
☞
Ensure that the hybrid filter is correctly installed.
3.5.8
Connecting exhaust air ducting (with extracted
air and hybrid mode)
Extracted air mode without BackFlow technology
The BackFlow port is not used. When connecting a
flexible hose, it is possible to use a tight-fitting pipe as an
intermediate piece.
☞
Establish a chamfer on the inside of the exhaust air
ducting.
☞
Fit the exhaust air ducting directly onto the outlet in the
fan housing from above.
Extracted air mode with BackFlow technology
The BackFlow port is used.
D
“3.5.6 Fitting the BackFlow port” (page 14).
2.
1.
2.
☞
Fit the exhaust air ducting onto the BackFlow port from
above.
☞
Seal the transition between the exhaust air ducting and
the BackFlow port with sealing tape (accessory).
Summary of Contents for BWH 90 GL
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