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NOTICE Non-intended operation/impermiss-
ible operation due to incorrectly mounted
unit.
Only install unit in accordance with the planning
documents.
In particular, note the information on ventilation
channels and sound deadening.
Observe planning instructions regarding unit pos-
ition and distance to other façade components.
If necessary, use isolating elements.
NOTICE With the unit covered, higher resist-
ance (pressure).
Higher operating noise, higher consumption.
Never cover the exhaust air element during oper-
ation.
6 System and product informa-
tion
6.1 Certificates of approval
Certificates of approval on request.
6.2 Centro centralised ventilation sys-
tem
Exhaust air elements are components of the cent-
rally controlled Centro air extraction system.
A central roof fan or ventilation box extracts the
stale, humid air via the exhaust air elements in-
stalled in bathrooms, toilet rooms and kitchens.
At the same time, outside air flows draught-free
into the apartment(s) via supply air elements. The
Centro pressure controller keeps the air supply
pressure of the central fan constant.
6.3 Exhaust air elements
Centro-M-APB
Manual model. For use in systems with jointly
variable volumetric flows. Fixed air volume setting
by pushing out sealing plugs in each exhaust air
element.
Centro-E-APB
Electric model. With electro-thermal servomotor
for switching between basic and demand-based
ventilation. Fixed air volume setting of the basic
ventilation by pushing out sealing plugs in each
exhaust air element. Demand-based ventilation
automatically via servomotor.
Centro-H-APB
Model with automatic humidity control.
6 System and product information
Barrier-free product as the fan switches itself on
and off automatically. Once the exhaust air ele-
ment has been installed, the unit regulates to the
current room humidity (relative humidity). This hu-
midity value is saved as the first reference value.
The reference value does not have to be spe-
cified manually.
If the room humidity rises by 7 % within 2
minutes, the exhaust air element switches to full
load operation (demand-based ventilation). If the
relative humidity falls below the reference value
during operation, the newly established reference
value is saved. The exhaust air element then
automatically switches back to base load opera-
tion.
If the humidity does not fall below the reference
value within 60 minutes, the unit continues to op-
erate for 15 minutes in nominal load and then
switches to base load operation or off. The ex-
haust air element then automatically switches
back to base load operation.
Demand-based ventilation automatically or via a
switch (for example light switch). After manual
switch-on (light switch) the exhaust air element
runs with a start delay of approx. 1 minute with
demand-based ventilation (full load). After manual
switch-off, the exhaust air element continues to
run in nominal load operation with an overrun
time of 15 minutes (valve closing time approx. 2 -
3 minutes).
Fixed air volume setting of the basic ventilation by
pushing out sealing plugs in each exhaust air ele-
ment. Demand-based ventilation possible via a
switch (e.g. light switch). For function: Wiring dia-
grams [} 22].
6.4 Product features
• Filter change is indicated via time strip (→ Title
page).
The time strip is visibly attached to a location
of your choice (e.g. next to the exhaust air ele-
ment) and after the filter change interval has
elapsed, it can be disposed of in the domestic
waste. Do not affix the time strip under the
cover. New time strips are included in the scope
of delivery of the exchange air filter.
• Centro-APB with maintenance-free fire protec-
tion shut-off device K 90-18017 (incl. metal
backflow preventer with soldered strut).
• With DN 75/DN 80 exhaust socket.
• Lower part of housing can be turned, so the ex-
haust socket can be connected to main duct in
the top left or top right.
7
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