22 Chapter 6 Installation RCF manual
Terminal Designation Description Function
10 L 230 V AC Line Supply voltage
11 NC Not connected
12 N 230 V AC Neutral
Power supply (internally connected
to terminal 13)
13 N Fan-coil common / 230 V
AC Neutral
Common fan-coil connector
(internally connected to terminal
20 DO1 Fan-coil output 1 for fan
control
Relay, 230 V AC, 3 A
21 DO2 Fan-coil output 2 for fan
control
Relay, 230 V AC, 3 A
22 DO3 Fan-coil output 3 for fan
Relay, 230 V AC, 3 A
30 NC Not connected
31 DO4 Digital output 4 for
Digital output, 230 V AC, max 300
32 CDO45 Common DO4 & 5 Common connection for digital
outputs 4 and 5
33 DO5 Digital output 5 for
heating/cooling signal
Digital output, 230 V AC, max 300
mA (3 A initially)
40
DI
Digital input Floating (potential-free) window
contact or occupancy contact.
41 AGnd Analogue ground
42 AI Analogue input For external room sensors or
supply air temperature limitation
sensor, PT1000. Measuring range
0...50°C. The sensor is connected
between terminals 42 and 44,
AGnd.
43 UI Universal input Potential-free window contact or
dito change-over input
(configurable for NO/NC) or
44 AGnd Analogue ground
50 AGnd Analogue ground
51 NC Not connected
52 NC Not connected
53 A RS485 communication A RCF-230CAD
54 B RS485 communication B RCF-230CAD