LU-VE Emeritus LU1W Manual De Usuario página 164

100%
Fan%
max
PF19
Fan%
min
PF18
4.3.2 Winter function
In colder periods it may happen that the heat exchanged, even with the fans rotating at the minimum speed, is too
much. To handle the aforesaid low heat conditions, fans are switched on and off by step, one fan after another (or one
pair after another for two-row fans). The fans are switched on and off by parameters PF25, PF26, PF27. When the
ventilation speed exceeds the parameter value PF26, the next fan is switched on; the start-up sequence does not
depend on the position of the fan but is defined based on the operating hours of the single fan; priority is given to the
less worn fans. Deactivation works in the same way when the ventilation control value falls below the PF25
parameter; the shutdown priority is given to the most worn fans. The wait time between consecutive turns on or off is
defined by parameter PF27.
PARAMETER
NAME
Minimum speed in ventilation
PF18
control mode
Maximum speed in ventilation
PF19
control mode
PF20 Maximum speed limit
Ventilation cut-off in
PF07
cooling/condensing mode
Regulation temp. differential for
PF08 over-speed start-up in
cooling/condensing mode
Regulation temp. differential for
PF09 over-speed deactivation in cooling
/condensing mode
Speed for reduction in number of
PF25
active fans
Speed for increase in number of
PF26
active fans
Waiting time for increase/decrease
PF27
in number of active fans
LU1W - User Manual
Fan%
(AO)
Set Set
CutOff -PB
PF07
Ventilation in Dry Cooler/Condensing
DESCRIPTION
PR03 PF09
Set Set+Diff
OFF Max
DEFAULT MIN
VALUE VALUE
0.00 0.00
100.00 0.00
100.00 0.00
0.0 0.0
10.0 PF09
5.0 0.0
15.00 0.00
25.00 0.00
60 1
41
PF08
Set+Diff
ON Max
MAX
UM
VALUE
% USER → OPTIMIZAT.
100.00
% USER → OPTIMIZAT.
PF20
100.00 %
°C USER → OPTIMIZAT.
65.0
°C
10.0
°C
PF08
%
100.00
100.00 %
9999 sec
REV.1.1 – 07/11/2017 - ENG
T
MENU
USER
ADVANCED →
VENTILATION
ADVANCED →
VENTILATION
USER →
LOW POWER
USER →
LOW POWER
USER →
LOW POWER