4. Operation | gb
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Operating modes
The operating modes can be
selected via this key [22].
1. Press key .
The LEDs [21] next to the key
show the operating mode selected
at present:
Heat recovery operating mode:
Heat recovery is activated for all ventilation
units. The ventilation units switch between
supply air mode and exhaust air mode
every 70 seconds. Ventilation level can be
selected manually.
Cross-ventilation operating mode:
The ventilation units run continuously in
supply air / exhaust air mode. Ventilation
level can be selected manually. This
operating mode allows the rooms to be
cooled on summer nights or when there are
a lot of people in the room, e.g. during
parties.
Dehumidification operating mode:
The dehumidification operating mode is
switched on manually. The ventilation unit
with the humidity sensor switches to cross-
ventilation (exhaust air). The corresponding
unit switches to cross-ventilation (supply
air). LED for dehumidification operating
mode lights up. If the relative humidity falls
below 45 %, the ventilation units switch to
heat recovery mode. LED display also
switches to heat recovery mode. The
relative humidity is determined using an
optional PPH-K humidity sensor.
Ventilation levels in heat recovery and
cross-ventilation operating modes
The ventilation levels of the heat
recovery and cross-ventilation
operating modes can be selected
using this key [23].
1. Press key.
The LEDs [24] next to the key
show the ventilation level selected
at present.
The levels indicate the hourly air volume of
the ventilation units:
PP 60 KA PP 60 KL
Level 1
17 m³/h
17 m³/h
Level 2
22 m³/h
20 m³/h
Level 3
30 m³/h
28 m³/h
Level 4
45 m³/h
43 m³/h
Level 5
55 m³/h
50 m³/h
Ventilation levels in dehumidification
operating mode
The ventilation level for the
dehumidification operating mode
depends on the level previously
selected on the room air control.
For example, if the heat recovery
operating mode was set with
ventilation level 3 before the
dehumidification operating mode
was selected, the dehumidification
operating mode also runs in
ventilation level 3.