Regulus RDC Series User manual

www.regulus.eu
RDC Room Unit
RDC Room Unit
EN
Installation and Operation Manual
RDC Room Unit with Touchscreen

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Obsah
Technical Description of the Room Unit ................................................................................................. 3
Wiring the Room Unit .............................................................................................................................. 3
Room Unit Simple Mode ......................................................................................................................... 4
Room Unit Display in Complete Mode .................................................................................................... 5
Control keys ......................................................................................................................................... 6
Initial displays in Complete Mode ........................................................................................................... 6
Basic display (room temperature) ....................................................................................................... 7
Mode selection display ........................................................................................................................ 8
Outdoor temperature display ............................................................................................................. 9
Immediate recirculation display ........................................................................................................ 10
Immediate ventilation display ........................................................................................................... 11
Temperature displays ........................................................................................................................ 12
Main menu in Complete Mode ............................................................................................................. 13
Heating zone settings (ZONE) ............................................................................................................ 13
DHW zone settings (DHW) ................................................................................................................ 15
Ventilation settings (VENT) ............................................................................................................... 16
Holidays function settings (HOLIDAYS) ............................................................................................. 17
Heat pump settings (HP) ................................................................................................................... 18
Solar heating settings (SOLAR) .......................................................................................................... 19
Auxiliary heat source settings (SOURCE) ........................................................................................... 19
Display of sensor values (INPUTS) ..................................................................................................... 19
Date and time settings (TIME)........................................................................................................... 20
Password reset for controller website access (WWW) ..................................................................... 21

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Technical Description of the Room Unit
C-RC-0011R is a wall-mount room unit with one inner sensor and a touchscreen, designed as a
standard unit on a CIB bus.
The unit is intended for operation in normal and chemically non-aggressive environment. No
maintenance is required. It consists of 2 parts: bottom with terminals and a cover with PCB and
control screen. It shall be fitted onto a diam. 60 recessed electric box or on a wall. There is an
opening for cable in the bottom part.
The unit is fitted with a touchscreen where special symbols are controlled by the module's CPU. The
unit is equipped with 5 capacitive keys in the bottom part of the screen, permitting to scroll between
screens and edit displayed values.
The unit can be controlled using either a simple display mode (a LOCK icon is shown on the display)
or a complete display mode. The display mode and items shown in the complete display mode can be
selected on the service level of the controller’s web interface.
Wiring the Room Unit
Warning: This controller may be wired by a qualified person only. Adjustment made by a layman
may cause damage to system components.
The Room Unit shall be wired by a 2-core cable of max. 1.5 mm2 cross secion to a standard CIB bus,
to screw terminals on the PCB. The right polarity shall be uncionditionally respected.
Adjustments to the Room Unit (configuration and HW address) are then done via the controller's
web interface.
After the CIB bus is energized, the Room Unit is ready for operation. Its HW address is printed on a
label on the PCB.

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Room Unit Simple Mode
Main value Actual room temperature measured by the temperature sensor located
inside the room unit.
Secondary value Desired room temperature – depends on the zone mode
(comfort/setback/holidays). The desired room temperature (corresponding
to the current zone mode) can be edited in steps of 0.1°C by UP (+0.1°C) and
DOWN (-0.1°C) keys.
Zone OFF and ON keys If a zone is switched on by the user, the ON key is displayed. By clicking the
ON key the zone will be switched off by the user and the OFF key is displayed.
By clicking the OFF key the zone will be switched on by the user and the ON
key will be displayed again.
Switching a zone ON/OFF by the user using Zone ON and Zone OFF keys is a function
that can be enabled or disabled on the service level of the controller’s web interface.
Weekday number Display of the actual weekday number.
Comfort/setback Display of the actual zone mode (comfort or setback).
Time program Displayed when the zone is in automatic mode and being heated following a
time program.
Holidays Displayed when the zone is in holiday mode.
comfort/setback
time program
holidays
main value
secondary value
UP and DOWN
keys
zone OFF and zone ON
keys
weekday number
source is heating
winter mode
active fault
FAULT DESCRIPT.
key

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Heat source on The main source (depending on the controller version) is currently running.
Winter mode The zone is currently in the winter mode (no icon is shown in the summer
mode).
Active fault Indication of an active fault. The fault description could be displayed by
pressing the FAULT DESCRIPTION key.
Room Unit Display in Complete Mode
Main value Numeric display of the main value (usually temperature).
Secondary value Display of the secondary value – temperature, number, date, text. When the
text is too long and cannot fit into the 4-character display, it will run in an
endless loop.
Weekday number Display of the actual weekday number – only on initial displays and during
time program editing.
Temperature A thermometer symbol is displayed only when the main value shows the
temperature. A house symbol is displayed only when the outdoor
temperature is shown.
Comfort/setback Display of the actual zone mode (comfort or setback).
Time program Displayed when the zone is in automatic mode and being heated following a
time program.
Edit The icon flashes when the current value is being edited (edit mode).
weekday number
temp.
comfort/setback
time program
edit
holidays
source is heating
winter mode
active fault
main value
secondary value
scroll keys
(displays / value)
MENU key
CANCEL
key
OK
key
ventilator running

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Holidays Displayed when the zone is in holiday mode.
Ventilator running The ventilation unit (depending on the controller version) is currently running
(along with the fan power indicator).
Source is heating The main source (depending on the controller version) is currently running.
Winter mode The zone is currently in the winter mode (no icon is shown in the summer
mode).
Active fault Indication of an active fault (on initial displays only). In the place of the
secondary value, the text of the last active fault runs in a loop.
Control keys
MENU key In the basic display (room temperature), this key will bring you to the main
menu. From all other displays it will bring you back to the basic display.
CANCEL key In the edit mode (edit icon flashing) this key will abort editing a value (no
changes will be saved).
It is used to return to the basic display (room temperature) from initial
displays. From all other displays it will bring you to a higher level.
OK key In the edit mode, it will save the value and finish editing.
By pressing OK, editing a value will be enabled, or enter into a selected menu
item confirmed.
Scroll keys They are used to scroll between displays within a group. If the edit mode is
active (the edit icon flashing), the value of a variable can be modified using
these two keys.
After 2 minutes of inactivity (no key pressed) automatic return to the basic display will follow (room
temperature displayed)..
Initial displays in Complete Mode
Initial displays are a group of displays of the highest level (pressing CANCEL keys does not bring you
to any higher group of displays) you can scroll between using the up and down arrows. The default
(basic) display in this group is the room temperature showing display (the value taken from the inner
temperature sensor of the room unit). By pressing MENU from this display, the main menu can be
opened and selected values edited.
Other displays may offer mode selection, show outdoor temperature or current DHW recirculation
and show some important system temperatures.
The basic display permits editing the desired room temperature (comfort/setback depending on the
current mode), while the current mode display permits selecting the zone mode

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(auto/comfort/setback), and the recirculation display enables turning on DHW recirculation for a
preset period.
Entering the menu from the basic display and some displays within the initial group of
displays may be unavailable in some controller versions.
Basic display (room temperature)
Main value Actual room temperature – measured with a temperature sensor inside the
room unit.
Secondary value Information if the zone is switched on/off by a user (ON/OFF).
Comfort/Setback/Holidays Current zone mode, showing info on the desired temperature.
Time program Displayed when the zone is in automatic mode and being heated following a
time program.
Heat source on The main source (depending on the controller version) is currently running.
Winter mode The zone is currently in the winter mode.
MENU key Access to the main menu for editing selected parameters (may be
inaccessible, depending on the controller version).
OK key Editing the current desired room temperature.

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The current desired room temperature is based on the zone mode. If the zone is running in the
comfort mode, the comfort room temperature can be edited; if the zone is running in the setback
mode, the setback room temperature can be edited.
Editing the desired temperature during the Holiday mode is possible from the respective menu only.
Editing the current desired temperature
Main value Editing the current desired room temperature (comfort/setback).
Comfort/Setback Zone mode is shown here, i.e. also the temperature being edited on the
display.
Mode selection display

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Comfort/Setback Current zone mode.
Time program Automatic zone mode – comfort/setback controlled by the zone time
program.
OK key Entering the zone mode editing.
Editing zone mode
A zone mode can be changed using the up and down arrows. 3 modes are available – permanent
Comfort (Comfort icon displayed), permanent Setback (Setback icon displayed) and Automatic (time
program symbol displayed).
If the Automatic mode is selected, the desired room temperature is based on the zone time program
with automatic transitions between comfort and setback temperatures. Permanent Comfort/Setback
will override the time program, fixing the desired temperature at a Comfort/Setback value.
Outdoor temperature display
Main value Current outdoor temperature.
Secondary value Current time.

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Immediate recirculation display
Secondary value CIRC text and the info on the immediate recirculation function on are
displayed alternately (ON/OFF).
OK key Entry into editing and switching on immediate recirculation.
Editing immediate recirculation
Main value Time period (in minutes) when the immediate recirculation function will be
on.
Secondary value CIRC and MIN texts are displayed alternately (recirculation time in minutes).
The immediate recirculation will be started on pressing the OK key and will be running for the preset
time. After that it will be switched off again and return to the preset automatic mode.

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Immediate ventilation display
Secondary value VENT text and the info on the immediate ventilation function on are
displayed alternately (ON/OFF).
OK key Entry into editing and switching on immediate ventilation.
Editing immediate recirculation
Main value Time period (in minutes) when the immediate ventilation function will be on.
The power to which the ventilation unit fan will be set has to be changed in
the controller's web interface.
Secondary value VENT and MIN texts are displayed alternately (ventilation time in minutes).

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The immediate ventilation will be started on pressing the OK key and will be running for the preset
time. After that it will be switched off again and return to the preset automatic mode.
Temperature displays
The number and contents of temperature displays depends on the controller version
and type.
Main value The displayed temperature.
Secondary value Alternating display of a text identifying the displayed temperature (e.g..
SOLAR,DHW, ZONE 2...), the desired temperature and a text ON/OFF
showing whether the function (zone, source) is ON or OFF.
Heat source on The source the temperature is assigned to is currently running.
Display of secondary values (ON/OFF, desired temperature) and display of a running
source may be unavailable for some displayed temperatures.

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Main menu in Complete Mode
The main menu is accessible from the basic display (room temperature) only, by pressing MENU. The
following items are then available in the main menu:
•Heating zone settings (ZONE 1,2…)
•DHW zone settings (DHW)
•Ventilation settings (DHW)
•Holidays function settings (HOLIDAYS)
•Heat pump settings (HP) – only in certain controller versions
•Solar heating settings (SOLAR)
•Source / Additional source settings – only in certain controller versions
•Clear display of IR inputs values (INPUTS)
•Date and time settings (TIME)
•Password reset for IR controller web interface (WWW)
The info displayed in the main menu depends on the controller version and type. In
some controller versions some info may be unavailable.
Heating zone settings (ZONE)
In the heating zone settings three parameters can be set in the following order (scroll the displays by
up and down arrows in case edit mode is off – edit symbol is not flashing, remains off)
1. User turning zone off/on (OFF/ON)
2. Comfort room temperature (COMFORT)
3. Setback room temperature (SETBACK)
You can edit the settings by pressing the OK key (the edit symbol starts flashing) and selecting the
desired value using up/down arrows. The value is then saved by pressing OK again, while pressing
CANCEL will abort the modifications. In either case, the edit symbol will go out and you will exit the
edit mode.
You can access further items for a more detailed setting of heating zone by scrolling the displays and
browsing in the heating zone menu:
4. Zone time program (PROGRAM)
5. Adjusting the OTC curve (OTC)
6. Adjusting the Summer/Winter mode (SUMMER and WINTER)
The next adjustment level can be entered by pressing OK.
The info displayed in the heating zone menu depends on the controller version and
type. In some controller versions some info may be unavailable.

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Zone time program settings
The time program can be set for every weekday separately, 2 comfort periods are available for each
day (i.e. periods when the room temperature corresponds to the comfort temperature). A weekday
time program is better illustrated by the following graph (comfort temperature 22°C, setback
temperature 20°C):
Four values can be then adjusted for each day – two transitions for each of the two periods (from
setback to comfort and back from comfort to setback).
Main value Setting the comfort period (1 = 1st period of day, 2 = 2nd period of day).
Secondary value The time of the period transition being currently edited.
Weekday The day the current value is being set for.
Comfort/setback If the COMFORT symbol is shown, the transition from setback to comfort is
being edited; if the SETBACK symbol is shown, the transition from comfort to
setback is being edited.
19,0
20,0
21,0
22,0
23,0
0:00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0:00

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Setting an OTC curve for a heating zone (OTC)
The weather-compensating heating curve in IR Controllers is calculated from heating system
parameters and can be shifted in parallel or its inclination changed at two points, namely -15°C and
+15°C outdoor temperature. When editing the correction value of one point, the other one always
remains unchanged and the curve changes its inclination. For a parallel shift, the same correction at
both the points shall be made.
You can edit the settings by pressing the OK key (the edit symbol starts flashing) and selecting the
desired value using up/down arrows. The value is then saved by pressing OK again, while pressing
CANCEL will abort the modifications. In either case, the edit symbol will go out and you will exit the
edit mode.
You can access 4 points of OTC curve computed from the OTC formula in the format [outdoor
temperature; desired heating water temperature] by scrolling the displays further. For each of the 4
outdoor temperatures (described as E1, E2, E3, a E4 in the display) a desired heating water
temperature of I1, I2, I3 a I4 is displayed.
Setting the Summer-Winter mode (SUMMER and WINTER)
A threshold temperature and its duration in hours (HRS) can be set for either mode (Summer,
Winter). Turning on/off the Summer-Winter mode is common for both the modes. The order of
displays when setting the mode is following:
1. Switching on/off the Summer/Winter mode (OFF/ON)
2. Setting the threshold temperature for SUMMER or WINTER mode (the secondary value is
blank)
3. Setting the temperature duration for SUMMER or WINTER mode (HRS)
If the Summer-Winter mode is off, the WINTER mode is set as default, i.e. zones are heated up to the
desired temperatures following the time program.
When the Summer-Winter mode is on, the controller keeps comparing the outdoor temperature
with the set threshold temperatures.
When the outdoor temperature is below the set threshold temperature for WINTER mode for the set
duration for WINTER mode then the WINTER mode is activated (zone is heated up).
When the outdoor temperature is above the set threshold temperature for SUMMER mode for the
set duration for SUMMER mode then the SUMMER mode is activated (zone heating is deactivated).
DHW zone settings (DHW)
In the DHW zone settings three parameters can be set in the following order (scroll the displays by up
and down arrows in case edit mode is off – edit symbol is not flashing, remains off):
1. User turning zone off/on (OFF/ON)
2. Comfort temperature (COMFORT)
3. Setback temperature (SETBACK)

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You can edit the settings by pressing the OK key (the edit symbol starts flashing) and selecting the
desired value using up/down arrows. The value is then saved by pressing OK again, while pressing
CANCEL will abort the modifications. In either case, the edit symbol will go out and you will exit the
edit mode.
You can access further items for a more detailed setting of DHW zone by scrolling the displays and
browsing in the DHW zone menu:
4. DHW zone time program (PROGRAM) – described in the chapter Heating zone settings
5. Setting the DHW recirculation (CIRCULATION)
The next adjustment level can be entered by pressing OK.
The info displayed in the DHW zone menu depends on the controller version and type.
In some controller versions some info may be unavailable.
DHW recirculation settings
In the DHW zone settings three parameters can be set in the following order (scroll the displays by up
and down arrows in case edit mode is off – edit symbol is not flashing, remains off):
1. User turning zone off/on (OFF/ON)
2. Recirculation time in minutes (alternately ON and MIN)
3. Circulation pump delay time in minutes (alternately OFF and MIN)
4. Time program for DHW recirculation (PROGRAM) – described in the chapter Heating zone
settings
You can edit the settings in displays 1 to 3 by pressing the OK key (the edit symbol starts flashing) and
selecting the desired value using up/down arrows. The value is then saved by pressing OK again,
while pressing CANCEL will abort the modifications. In either case, the edit symbol will go out and
you will exit the edit mode.
You can access the time program editing (display 4) by pressing OK.
A DHW recirculation pump is started only if its switching is enabled by the recirculation time
program.
The pump always runs during the recirculation time (display 2 – recirculation time – in the secondary
display the text ON and MIN is displayed alternately), then it stops for the idle time (display 3 – idle
time - in the secondary display the text OFF and MIN is displayed alternately). This cycle is being
repeated permanently..
Ventilation settings (VENT)
In the ventilation settings three parameters can be set in the following order (scroll the displays by
up and down arrows in case edit mode is off – edit symbol is not flashing, remains off):
1. User turning zone off/on (OFF/ON)
2. Power of the fan from 0-100% for the comfort mode (COMFORT)

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3. Power of the fan from 0-100% for the setback mode (SETBACK)
You can edit the settings by pressing the OK key (the edit symbol starts flashing) and selecting the
desired value using up/down arrows. The value is then saved by pressing OK again, while pressing
CANCEL will abort the modifications. In either case, the edit symbol will go out and you will exit the
edit mode.
You can access further items for a more detailed setting of ventilation zone by scrolling the displays
and browsing in the DHW zone menu:
4. Ventilation time program (PROGRAM) – described in the chapter Heating zone settings
The next adjustment level can be entered by pressing OK.
The info displayed in the ventilation menu depends on the controller version and type.
In some controller versions some info may be unavailable.
Holidays function settings (HOLIDAYS)
The Holidays function permits to reduce temporarily the desired temperatures in heating and DHW
zones for the preset number of days. This means that both the comfort and setback temperatures
will be overridden by the desired holidays temperature temporarily.
After the number of days expires that were set for the Holidays function, this function will be
switched off and the controller will return to the preceding mode (automatic/permanent
comfort/permanent setback).
The displays within the Holidays function follow in this order:

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Holidays switch-on display. If not in edit mode, the display shows the current state of the Holiday
function (ON/OFF); on entering the edit mode (pressing the OK key - the edit symbol starts flashing)
the state can be changed.
When changed to the ON state, the Holidays function starts immediately and will run for the number
of days set (see the next display), then it will finish (OFF). If desired, the function can be switched off
manually any time by changing the state to OFF.
Setting how long (in days) the function shall be active when switched on. After the time expires, the
function will be switched off.
A number of displays follows (depending on the controller type and version) where the desired
holidays temperatures can be set for separate zones. The temperature shown as the main value is
always unambiguously identified by the secondary text.
Heat pump settings (HP)
This group of displays is only available in those IR controllers that are designed to
control heat pumps.
Only this one parameter can be changed in the heat pump settings:
1. User switching off/on a HP cascade (OFF/ON)
You can edit the settings by pressing the OK key (the edit symbol starts flashing) and selecting the
desired value using up/down arrows. The value is then saved by pressing OK again, while pressing
CANCEL will abort the modifications. In either case, the edit symbol will go out and you will exit the
edit mode.
The following three displays contain only information on the condition of the heat pump and the
values cannot be edited:

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2. HP condition in text (e.g.: HEATING DHW)
3. HP Flow temperature (INLET)
4. HP Return temperature (OUTLET)
Solar heating settings (SOLAR)
This group of displays is only available in those IR controllers that are designed to
control solar heating.
The solar heating settings menu may contain items for setting up to 3 solar consumers (depending on
the controller version and type). Each solar consumer can be switched on/off by the user and the
desired temperature coming from the solar heating set. The group of displays can then contain up to
6 displays:
1. User turning off/on the solar consumer 1 (alternately S1 and ON/OFF)
2. Desired temperature of solar consumer 1 (S1)
3. User turning off/on the solar consumer 2 (alternately S2 and ON/OFF)
4. Desired temperature of solar consumer 2 (S2)
5. User turning off/on the solar consumer 3 (alternately S3 and ON/OFF)
6. Desired temperature of solar consumer 3 (S3)
The number of displays (number of solar consumers) depends on the controller version
and type.
You can edit the settings by pressing the OK key (the edit symbol starts flashing) and selecting the
desired value using up/down arrows. The value is then saved by pressing OK again, while pressing
CANCEL will abort the modifications. In either case, the edit symbol will go out and you will exit the
edit mode.
Auxiliary heat source settings (SOURCE)
Setting a heat source may be unavailable in some types of IR controllers.
Only this one parameter can be changed in the aux heat source settings:
1. User switching on/off an aux heat source (OFF/ON)
You can edit the settings by pressing the OK key (the edit symbol starts flashing) and selecting the
desired value using up/down arrows. The value is then saved by pressing OK again, while pressing
CANCEL will abort the modifications. In either case, the edit symbol will go out and you will exit the
edit mode.
Display of sensor values (INPUTS)
In the INPUTS group of displays the current values of temperature sensors are displayed. The number
of displays and their contents will differ depending on the controller version and type.

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Main value Actual temperature at the temperature sensor.
Secondary value Unambiguous temperature identification.
Date and time settings (TIME)
Date and time are set in 6 steps. First the year shall be set (in the range between 00 and 99 which
corresponds to 2000-2099), then the month (1-12), day (1-31), hour (0-23) and minute (0-59). The
last display lets you save the set values and overwrite the IR controller system time (RTC). The
displays are shown in the following order:
1. Setting the year between 0 (2000) and 99 (2099) (YEAR)
2. Setting the month between 1 (January) and 12 (December) (MON)
3. Setting the day between 1 and 31 (DAY)
4. Setting the hour between 0 and 23 (HRS)
5. Setting the minute between 0 and 59 (MIN)
6. Saving the values and overwriting the system time (SAVE)
You can edit the settings by pressing the OK key (the edit symbol starts flashing) and selecting the
desired value using up/down arrows. The value is then saved by pressing OK again, while pressing
CANCEL will abort the modifications. In either case, the edit symbol will go out and you will exit the
edit mode.
While in the SAVE display, press OK to enable saving the values to the system time circuit of the
controller (RTC). If you chose YES, the set values are saved and the system time overwritten. If you
chose NO, the system time remains unchanged but the values set on displays 1-5 remain changed).
When the new time is successfully saved in the RTC circuit, the display will return to the basic menu.