35
Air conditioner type: Four-pipe horizontal room fan coil with two on/off normally
closed valves
Appropriate thermostat:
Prossimo 4311A
Null
Low
Medium
High
NC Cooling Valve
NC Heating Valve
Line
Terminal
number
Description
Input/
Output
Electrical characteristics
1
Null
Input
AC 220V / 24V 50Hz
2
Fan high
Output
AC 220V / 24V 50Hz
3
Fan medium
Output
AC 220V / 24V 50Hz
4
Fan low
Output
AC 220V / 24V 50Hz
5
To N/C cooling valve
Output
AC 220V / 24V 50Hz
6
To N/C heating valve
Output
AC 220V / 24V 50Hz
7
Line
Input
AC 220V / 24V 50Hz
Appendix B.