Gewiss CHORUS GW 16 974CB Manual De Programación página 57

The parameters that can be visualised depend on the type of control logic for the
temperature adjustment system, which was set through the "Heating control algorithm"
and "Cooling control algorithm" of the "Main" menu if the device has been configured
with ETS, or with the "Temperature adjustment control algorithm" parameter (P 7) if the
device has been configured with Easy Controller:
• two points ON-OFF
• two 0%-100% points (only if configured with ETS)
• PWM proportional-integral
• continuous proportional-integral (only if configured with ETS)
• fan coil with ON-OFF 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 -
device activates the heating system by sending the relative command to the actuator that manages
it; when the detected temperature reaches the fixed set-point value, the device deactivates the
heating system.
H
EATING
In cooling mode, when the detected temperature is higher than the "setpoint +
the device activates the cooling 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 cooling system.
set-point
To avoid the continuous switchovers of the solenoid valve, after an OFF-ON-OFF
sequence, the next ON command can only be sent after at least 2 minutes have elapsed.
USER INSTRUCTIONS
set-point
heat
C
OOLING
cond
57
heat " value, the
N
cool
N
E
N
G
L
I
S
H
" value,