DAY
°C
16.3 Manual ventilation function
Press
"
M” and scroll with the
TOUCH PAD
until the
“Manual ventilation
"
mode starts flashing.
Then press “Confirm”
.
If this icon is
present, the
operating mode
is MANUAL
1a
2a
3a
4a
+
_
Speed
No.
.
AUTO
DAY
°C
Then press “Confirm”
If this icon is
present, the operating
mode
is AUTOMATIC
The advanced centralised control systems are equipped
with an RH% humidity sensor or else an external CO2
sensor.
When
"Automatic Mode
”
is enabled, fan speed is
controlled by an automatic control cycle relative to internal
instantaneous humidity and CO
2
variations.
100%
70%
45%
25%
Modulation
(default values)
The fan speed is set according to the interval relating to the
ambient relative humidity detected by the sensor.
If the ambient humidity is compatible with the ambient
comfort (typically between 25% and 50%), then a special
control for air exchange is not necessary and the user can
control the speed of the fans as in Manual Mode.
If the ambient humidity temporarily goes beyond the
ambient comfort range, then an automatic variable flow
control mode is engaged, for tracking an ambient humidity
target value.
The target value is continuously calculated by the system
as a daily average of the ambient humidity. This way the
system reacts automatically to restore as much as possible
the comfort conditions lost due to an extraordinary event,
such as steam production caused by a hot shower or a pot
while cooking.
In automatic variable flow control mode, the user can
manually change the speed of the fans as required at any
time. The automatic mode will be restored at the next
significant ambient humidity variation.
If, however, the poor
comfort conditions persist, then
it will mean that the low or
high humidity is not due to extraordinary and temporary
events, but depends on harsh weather conditions, such as
winter frost or extreme heat.
Lindab reserves the right to make changes without prior notice
202
2
-0
1
-
28
RHR-CF
lindab | we simplify construction
Installation instructions
Fig. 59
With the
"
Manual ventilation” mode enabled, the speed of
the fan at the various points can be adjusted by scrolling
with the
TOUCH PAD
. Rotating the key clock wise on the
pad increases the speed of the fan while anticlockwise
decreases the speed of the fan.
“Manual ventilation” mode at 100% is the standard
operating mode, corresponding to the nominal air flow rates
set by the installer upon initial configuration.
Fig. 60
16.4 Automatic mode
Available for units equipped with air quality sensor
(humidity or CO2).
Press
"
M” and scroll with the
TOUCH PAD
until the
AUTOMATIC mode starts flashing.
Fig. 61
16.5 Automatic mode with humidity sensor
38
