USER INSTRUCTIONS
20
Control parameters
The screens that can be visualised will depend on the type of control logic of the
temperature adjustment system that was set via ETS (with the “Heating control
algorithm” and the “Cooling control algorithm” parameters of the “Load control” menu):
•
two points ON-OFF
•
two points 0%-100%
•
PWM proportional-integral
•
continuous proportional-integral
•
fan coil with ON-OFF speed control
•
fan coil with continuous speed control
TWO POINTS ON-OFF
The operating principle manages the temperature adjustment system with two thresholds
(hysteresis cycle), used to distinguish the ON or OFF status of the system.
In heating mode, when the detected temperature is lower than the “setpoint -
heat
” value, the
device activates the heating system by sending the relative command to the actuator that manages
it; when the detected temperature reaches the fixed setpoint value, the device deactivates the
heating system.
H
EATING
In cooling mode, when the measured temperature is higher than the “se
cond
” value,
the device activates the cooling system by sending the relative command to the actuator that
manages it; when the measured temperature reaches the fixed setpoint value, the device
deactivates the cooling system.
C
OOLING
To avoid continuous solenoid valve switchovers, after an OFF-ON-OFF sequence the next ON
command can only be sent after at least 2 minutes have elapsed.
T
T
setpoint
setpoint
heat
cond
