4
CV072018-1
MANAGEMENT OF FAN SPEED, FLOW OR CONSTANT PRESSURE
To modify this parameter, the icon at the top right of the synoptic table must be selected by clicking on it (it will turn green and the direction
buttons will appear). Then press the icon of the address button up to increase or down direction to decrease the value located next to it; Once
the desired one is located, press the OK button to confirm the selection. At first it is possible to turn off the machine directly by pressing the
central button, it disappears automatically by pressing the direction buttons. The variation can be expressed as a percentage for variable spe-
ed machines, with a simple 1-2-3 for machines with 3 speeds, in flow (m³ \ h) for machines with constant flow or pressure (Pa) for machines with
constant expression (equipped with the corresponding supplementary kit, see page 29). For these last two models, once the desired value has
been selected, the speed of the fans will automatically vary to keep the flow or the set pressure constant. For machines with a sensor mounted
different from the cop / cav kit, but always with constant pressure or flow rate, enter the percentage value of the pressure or flow scale of the
unit. The regulation it will be carried out in the same way. This also applies to the settings of the weekly programming menu (Program). In
addition to the scale value, the timer element will appear and, if selected, will start the default weekly time program (see Program menu). If an
air quality, relative humidity sensor is present in the unit or if the analog input (0-10V) is activated, we will also have the automatic selection
that allows the automatic regulation of the fan speed in function of CO2, Humidity measured or by an external signal.
In detail the possible selections are:
- off:
with this selection, the fans are stopped. Be careful because in any case the unit is electrically powered; this value is obtained by descen-
ding below the minimum adjustable speed.
-xxx%:
if the unit has modulating fans it is possible to adjust a percentage value of the speed, flow rate or full-scale pressure (for units not
equipped with the corresponding kit but always in a cop / cav version with a different sensor), starting from a minimum (factory adjusted) to
100% with steps of 5% (1% on request).
-1,
2
or
3
: if the unit is equipped with 3-speed fans, it is possible to select one of the available ones: speed 1, speed 2 or speed 3.
-watch:
with this selection the speed of the fans is controlled according to what is established by the weekly chronoprogram (see Program
menu), this indication is obtained by selecting a value higher than the maximum speed (100% or 3).
-
auto:
this mode is available only if a sensor (CO2, CO2-COV, relative humidity HR) or an external signal (0-10V) is present. It is obtained by
selecting a value higher than clock.
-
xxx
m³
\
h:
if the unit is a constant flow (CAV) version with a kit, the desired value can be set in m3 \ h of flow. The fans will be regulated au-
tomatically to keep it constant depending on the changes in the load.
Speed fan controller (%)
Airflow control
Pressure control
Direction buttons
Direction buttons
on/off
