CIAT XtraConnect 2 - 18.3 Control setpoint calculation; Fixed setpoint; 2 setpoints with selection made via console; 2 setpoints with selection on On;Off input

EN - 44
4 mA 20 mA
P125.2
P126.2
CSG
4-20 mA input
18.3 Control setpoint calculation
18.3.1 Fixed setpoint
► If P120 = 1 (1 setpoint)
● In cooling mode:
- If P127 = No or outdoor sensor fault, control setpoint = P12
- If P127 = Yes (law based on outdoor temperature) and there are no outdoor sensor faults, fixed setpoint (Tout) is calculated using P121
● In heating mode:
- If P131 = No or outdoor sensor fault, control setpoint = P123
- If P131 = Yes (law based on outdoor temperature) and there are no outdoor sensor faults, fixed setpoint (Tout) is calculated using P123
► If P120 = 2 (2 setpoints with selection made via console)
● In cooling mode:
- If P127 = No or outdoor sensor fault, control setpoint = P121 or P122 based on the selection made via the console.
- If P127 = Yes (law based on outdoor temperature) and there are no outdoor sensor faults, fixed setpoint (Tout) is calculated using P121 or
P122 based on the selection made via the console.
● In heating mode:
- If P131 = no or outdoor sensor fault, control setpoint = P123 or P124 based on the selection made via the console.
- If P131 = Yes (law based on outdoor temperature) and there are no outdoor sensor faults, fixed setpoint (Tout) is calculated using P123 or
P124 based on the selection made via the console.
► If P120 = 3 (2 setpoints with selection on On/Off input)
● In cooling mode:
- If P127 = No or outdoor sensor fault:
- Control setpoint = P121 if on/off input open.
- Control setpoint = P122 if on/off input closed.
- If P127 = Yes (law based on outdoor temperature) and there are no outdoor sensor faults:
- Fixed setpoint (Tout) calculated using P121 if on/off input open.
- Fixed setpoint (Tout) calculated using P122 if on/off input closed.
● In heating mode:
- If P131 = No or outdoor sensor fault:
- Control setpoint = P123 if on/off input open.
- Control setpoint = P124 if on/off input closed.
- If P131 = Yes (law based on outdoor temperature) and there are no outdoor sensor faults:
- Fixed setpoint (Tout) calculated using P123 if on/off input open.
- Fixed setpoint (Tout) calculated using P124 if on/off input closed.
► If P120 = 4 (setpoint on 4-20 mA input)
● In heating mode:
DIAGRAM 1
Displayed if P120 = 3 and HEATING mode activated:
If setpoint adjustment based on outdoor temperature = No or there is an outdoor sensor fault →Control setpoint = result of diagram 1.
If the setpoint is adjusted based on the 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 1 is taken as the setpoint (P123 or P124).
If P120 is set to '3', P131 switches to 'No'.
- To reverse the direction of the slope, simply set P125.2 > P126.2 with a minimum difference of 5 K.
● In cooling mode:
P125.2 SETPOINT FOR 4mA
HEATING -xx,x°
P126.2 SETPOINT FOR 20mA
HEATING -xx,x°
4-20 mA input
STP
4 mA 20 mA
P125.1
P126.1
CSG
STP