Regin REGIO ARDO, Manual, Page: 58 / 134

Room unit
4. For room units without display, the LED in the centre of the room unit blinks red and blue during the
identification phase. The controller has completed the identification when the LED does not blink red
and blue anymore.
For room units with display, FAIL or is shown in the display during the identification phase. The
controller has completed the identification when neither FAIL nor is shown anymore.
3.8 Wiring
For information on how to wire the ED-RU... unit and connect it to the controller, see section 7 .
3.9 Configuration settings
The room unit configuration settings are described in the following sections.
3.9.1 General
This section describes the general configuration settings.
Table 3-5 General configuration settings.
Configuration setting Description
Connected room unit The room unit model that is used in the room HVAC system:
✓ None
✓ ED-RU
✓ ED-RU-O
✓ ED-RU-F
✓ ED-RU-FO
✓ ED-RU-DO
✓ ED-RU-DFO
✓ ED-RU-DOS
✓ ED-RU-H
✓ ED-RU-DOCS
✓ ED-RUD (Modbus)
This setting is used for configuration purposes, that is, for displaying relevant configura-
tion settings in Application tool that are related to the specific room unit model.
Room unit address Specifies the room unit ELA or Modbus address that the controller uses for communi-
cation with the room unit.
The ELA address has the format 1:[1-30] and is printed on a label that is located on the
back of the room unit PCB.
0: The controller automatically identifies the ELA address of the connected room unit
(default setting).
1, 2, 3...28, 29, 30: The controller only communicates with a connected room unit that
has this ELA address.
3.9.2 Two rooms support functions
Application tool provides support functions for checking the room unit IDs, and for swapping the IDs
between the room units. A search for and identification of connected room units can also be initiated. This
can be useful, for example, if the initial automatic search and identification did not succeed.
Table 3-6 lists the configuration settings that are used to enable these functions. The configuration settings
are shown in Application tool when the Enable room 2 setting is enabled, see section 2.9 .
58 Regio Ardo manual, Rev. D