30
Chapter 6
Installation
Regio Midi manual
Wiring for models for three-point control (RC-CTH, RC-CT, RC-CTO,
RC-CDTO)
Figure 14. Connection diagrams for models for three-point control
Terminal
Designation
Operation
10
G
Supply voltage 24 V AC
11
G0
Supply voltage 0 V
12
DO1
For forced ventilation. 24 V AC output, max 0.5 A. A 24 V AC actuator is
connected between terminal 12 and terminal 20, GDO.
13
DO2
For a three-point actuator, heating increase. 24 V AC output, max 0.5 A.
The actuator’s terminal for opening signal is connected to terminal 13. The
common pole on the actuator is connected to terminal 20, GDO.
14
DO3
For a three-point actuator, heating decrease. 24 V AC output, max 0.5 A.
The actuator’s terminal for closing signal is connected to terminal 14.
20
GDO
24 V AC out common for DO. Internally connected to terminal 10, G.
21
G0
0 V common for DO. Internally connected to terminal 11, G0.
22
DO4
For a three-point actuator, cooling increase. 24 V AC output, max 0.5 A.
The actuator’s terminal for opening signal is connected to terminal 22. The
common pole on the actuator is connected to terminal 20, GDO.
23
DO5
For a three-point actuator, cooling decrease. 24 V AC output, max 0.5 A.
The actuator’s terminal for closing signal is connected to terminal 23.
24
No function.
30
AI1
For an external room sensor or supply air temperature limitation sensor,
PT1000. Measuring range 0...50°C. The sensor is connected between
terminals 30 and 41, AGnd.
See Table 1, SW7.
RDAB5-24
