CIAT XtraConnect 2 - 18.3.2 Setpoint based on outdoor temperature - water law; In cooling mode (P127 = Yes); In heating mode (P131 = Yes); 18.4 Definition of the controller for PID control (water supply only)

EN - 45
P133 P132
P134
t0 t0 + T
X1
X2
Control setpoint
value
P123 or P124
setpoint
Outdoor air
temperature
SETPOINT
Displayed if P120 = 3 and cooling mode activated
If setpoint adjustment based on outdoor temperature = No or there is an outdoor sensor fault, Control setpoint = result of diagram 2.
If setpoint adjustment based on outdoor temperature = Yes and there are no faults on the outdoor sensor, The derived setpoint is calculated
using the outdoor temperature. The result of diagram 2 is taken as the setpoint (P121 or P122).
If P120 is set to '3', P127 automatically switches to 'No
- To reverse the direction of the slope, simply set P125.1 >P126.1 with a minimum difference of 5 K.
Important note about this function: operating problems may occur if parameters P127 and P131 are set to 'Yes' and the controller delivering
the 4-20 mA signal has its own function for shifting the setpoint based on the outdoor temperature.
If the minimum value of the signal becomes less than 4 mA, the value of the setpoint will not drop below the minimum setpoint.
18.3.2 Setpoint based on outdoor temperature - water law
 In cooling mode (P127 = Yes)
Slope adjustment in COOLING mode
Associated parameters:
- P128: Outdoor air temperature corresponding to start of drift.
- P129: Outdoor air temperature corresponding to end of drift.
- P130: Setpoint value at end of drift.
- P121 or P122: Control setpoint.
 In heating mode (P131 = Yes)
Slope adjustment in HEATING mode
Associated parameters:
- P132: Outdoor air temperature corresponding to start of drift.
- P133: Outdoor air temperature corresponding to end of drift.
- P134: Maximum setpoint value at end of drift.
- P123 or P124: Control setpoint.
18.4 Definition of the controller for PID control (water supply only)
The conduction time is the time the controller moves the actuator.
P125.1 SETPOINT FOR 4mA
COOLING -xx,x°
P126.1 SETPOINT FOR 20mA
COOLING -xx,x°
P130
P128 P129
P130
P128 P129
Control setpoint value
P121 or
P122
setpoint
Outdoor air
temperature
Control setpoint value
P121 or
P122
setpoint
Outdoor air
temperature