31
Airflow 2020 treats fresh air: it is used for the air
filtration, humidification or dehumidification and the
right temperature is reached to guarantee always fresh
and clean air in the served rooms.
The temperature control is performed according to the
ambient temperature sent by the RCW15 thermostat or
by the return probe installed built-in.
8 - CONTROL
8.5 MAIN FUNCTIONS
Heating
In heating are managed the compressor, free-heating
(it uses the fresh air heat to heat the room),
resistances, humidifier.
Cooling
In cooling are managed the compressor and the free-
cooling (it uses the fresh air to cool the room).
Mode change
The change between cooling and heating can be:
AUTOMATIC: according to the outside temperature
MANUAL: by the thermostat button
For the automatic or manual change set the P03
ONModeMan parameter on the ambient thermostat
.
Set Point
There are two setpoint : cooling and heating.
The set can be modified in MANUAL or AUTOMATIC
mode.
Manual Set Point
In MANUAL mode it is possible to modify the setpoint
by thermostat with the buttons A and B (previous
page).
The two set are connected to avoid their overlapping.
If the cooling set is decreased, also the heating set is
automatically decreased.
If the heating set is increased, also the cooling set is
automatically decreased.
Automatic Set Point
The setpoint change according to the outside
temperature, depending on a curve set by parameters.
The heating setpoint is below the curve; the cooling
setpoint is above
.
Ventilation
The unit operates as a fan, no control on the ambient
temperature.
Winter HR control
Only if is present the humidifier option.
The humidification is enabled only in heating.
The set point can be modified by thermostat with the
parameter p05 seturhe-at.
Silent
In this mode the fans are controlled with reduced
speeds.
The activation can be performed from digital input or
from supervisor.
The enabling is performed by parameter 224
SiletMode:
0=disabled; 1=from digital input; 2=from digital input or
supervisor.
The reduction of percentage is defined by the
parameter 225 (90% standard)
The silent mode can be activated only in heating .
Button lock / Button unlock
The long pressure of Clean and On-Off buttons, stop
all the button functions.
The lockout status is highlighted by characters “---“ at
each pressure of any button.
Summary of Contents for Airflow 2020
Page 1: ...Installation and operating manual Décember 2017 ...
Page 69: ...User manual ...
