Fan Coil ‘Analog’
Technical Support:
11
2.2.2
FAN
The fan features an
automatic
control, in which its speed is calculated by the module
itself and an external reference, and a
manual
control, in which the fan speed will be
controlled externally. For both modes the fan speed will always comply a minimum and
a maximum allowed speed.
When both, the manual and the automatic control modes are enabled, a communication
object will let switching from one control mode to the other, although the
receipt of a
manual command
would itself trigger the switch to manual mode. In addition, it is
possible to set in parameters which of the two control modes must be active
after
download
, and also a
time-out counter
to return to automatic mode after a period of
time without receiving manual commands.
On the other hand, a
delay to activate and deactivate fan
can be defined for each
operating mode. These delays will establish how much time must elapse from the arrival
of the control signal from the valve that generates the fan on or off, until the output control
command is sent to the fan. If there is a parameterised
minimum time for mode change
(see section 2.2), this delay will be applied together with the fan on and off delays as
follows:
Figure 5.
Delay for fan activation/deactivation.
Heating
Heating (status)
Cooling Valve = 0
Fan = 0
Delay to deactivate
fan (Cooling)
Heating Valve > 0
Mode change
minimum time
Fan > 0
Delay to actívate
fan (Heating)
