Regulus IR 10 User manual

www.regulus.cz
IR 10
IR 10
EN
User Guide
IR 10 Heating Controlller
v. IR10_CTC_400

2
Technical Description of IR 10 Heating Controller...................................................................3
1 How to operate IR 10 Controller.............................................................................................3
1.1 Basic User Menu.................................................................................................................4
2. User menu ..............................................................................................................................8
2.1 Zones – user settings ............................................................................................................8
2.2 Time programs – user settings .............................................................................................9
2.3 OTC curve – user settings....................................................................................................9
2.4 Heat pump control..............................................................................................................10
2.5 Heat pump errors................................................................................................................11
2.6 Setting temperatures for hot water storage tank heated by heat pump (DHW) .................11
2.7 Setting temperatures for thermal store ...............................................................................11
2.8 DHW recirculation and time program settings ..................................................................12
2.9 Statistics .............................................................................................................................12
2.10 Operating data ..................................................................................................................12
2.11 Others ...............................................................................................................................12
2.12 Time and date setting – user settings ...............................................................................12
3 Additional modules ...............................................................................................................13
4 Web interface ........................................................................................................................14

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Technical Description of IR 10 Heating Controller
Ver. IR10 CTC 400
IR 10 Heating Controller (ver. IR10 CTC 400) is a controller of heating systems with a CTC
heat pump and solar thermal system. The controller can handle 2 heating zones with a mixing
valve, DHW heating by a heat pump, DHW heating by an el. heating element and it can control
a backup source (electric or gas-fired boiler).
IR 10 Heating Controller is controlled by 6 keys. Information is shown on a 4-line display. The
Controller features 6 inputs for temperatures measured (by Pt 1000 temperature sensors) one
universal input for a switch (r.g. a room thermostat) and one input for Ripple control signal.
Further it features 6 relay outputs (250V 3A) and two 0-10V outputs capable of continuous
control of circulation pumps.
The Controller is fitted with an Ethernet interface a service intervention, firmware upgrades and
eventually elementary visualization of the concerned heating system. The Controller also
features an RS 232 and RS485 communication interfaces. As an option, an OpenTherm
module can be connected to the Controller for communication with a heat source.
This Controller controls CTC Heat Pumps.
1 How to operate IR 10 Controller
The controller is operated using 6 keys , , , , C, OK on its front panel.
The DISP key switches between User and Service display.
Note: The Service display is intended to show info on the Controller itself and therefore it is
not needed during common operation.

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The keys , are used to browse in the menu. In order to edit a parameter, press OK and
a cursor appears on the parameter. The values of numeric parameters can be
increased/decreased by pressing / keys. Selection parameters (e.g. ON/OFF) are
chosen by pressing keys , . When finished, pressing OK will move the cursor to the next
parameter in the same display. Parameter editing can be also exited without saving by
pressing the key C.
1.1 Basic User Menu
Pressing Cin the basic User menu will always bring back the first – basic display.
1 – outdoor temperature
2 – weekday and time
3 – temperature in zone (if room temp. sensor is used)
4 – temperature in Thermal Store
5 – temperature in DHW storage tank
Heating zone display (zone 1, zone 2):
1 – zone NO / ON / OFF / blocked (by low ThSt temper.)
2 – controller mode winter / summer
3 – current room temperature. If no room sensor is used, the data is shown as 0.0)
4 – desired room temperature per program
5 – adjustment to the desired room temperature. When RC21 IR room unit is used, “PJ“
appears and the adjustment made by this unit is shown
6 – desired heating water temperature for the zone
7 – current heating water temperature
1 2
7 6
3
4
5
3
1 2
54

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The desired temperature can be adjusted via the parameter “adjust”.
DHW by Heat Pump display:
1 – zone state (on / off / none)
2 – current temperature in DHW tank
3 – desired temperature in DHW tank
4 – heating by heat pump (heat / no heat)
Heat Pump, cascade display:
1 – state of heat pump No.1
2 – state of heat pump No..2
3 – state of heat pump No. 3
In this section, heat pump states are shown that are enabled on the Service level. The states can be
following:
•OFF - service : heat pump is turned off by a heating engineer
•OFF – user : heat pump is turned off on the User level
•fault : heat pump is in alarm mode, alarm details are shown on the User
level in HP Alarms menu
•return - max.T : heat pump is blocked by max. possible return temperature
•flow - max.T : heat pump is blocked by max. possible flow temperature
•ambient – min.T : heat pump is blocked by min. possible outdoor temperature
•ambient – max.T : heat pump is blocked by max. possible outdoor temperature
•sup.refrig.vapor : heat pump is blocked by max. compressor temperature
•high T earth circ. : heat pump is blocked by max. brine circuit temperature
•vapor –low T : heat pump is blocked by low evaporation temperature
•vapor – high T : heat pump is blocked by high evaporation temperature
•cond. – high T : heat pump is blocked by high condensing temperature
2
3
4
1
1
2
3

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•EEV-low T intake : heat pump is blocked by expansion valve’s low suction gas
temperature
•EEV-low T vapor : heat pump is blocked by expansion valve’s low evaporation temper.
•EEV-high T vapor : heat pump is blocked by expansion valve‘s high evaporation temper.
•EEV-low superheat : heat pump is blocked by expansion valve’s low superheat temper.
•EEV-high p cond. : heat pump is blocked by expansion valve’s high condensing temper.
•high pressure : heat pump is blocked by high refrigerant pressure
•defrosting : heat pump is defrosting (only for air/source heat pumps)
•min.run time : HP min. running time is active. This activates always after start,
DHW heating or defrosting
•DHW heating : heat pump is heating DHW
•rebooting : heat pump is blocked by min. time between 2 comperssor stars
•heating : heat pump is heating your home
•RC blocking : heat pump is blocked by Ripple control
•vol.flow control : heat pump’s circulation pump is running
•ready : heat pump is ready to start heating your home as soon as there is
call for heat
Display of auxiliary source and thermal store:
1 – state of auxiliary source: heat / no heat / none
2 – current thermal store temperature (desired)
3 – Ripple c. signal: on / off
Display of auxiliary source connected via OpenTherm interface:
1 – desired temperature
2 – real flow temp. of OT heat source
3 – state of communication with OT heat source: OK / error
1
2
3
1
2
3

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Display with firmware version and release date:
Controller in factory settings:
If the display shows the warning (above), then the Controller has been reset to factory setting
after alarm mode, and service staff shall be called in to set the respective Controller
parameters.
Menu:
While in MENU, use arrow keys , to select user or service menu, or dispaying additional
modules.
Add. Modules – this item will make available basic information on additional modules (if
present).
User Menu is intended to set zones, time schedules, OTC curve and date/time.
Service Menu is intended for more detailed adjustments to zones, sources, solar thermal
system and other parameters..
Access to the Service Menu is password protected and parameter adjustments are not
intended for laymen!
Recirculation is intended to set immediate DHW recirculation (circulation period). After the
set recirculation time expires, the function will be turned off automatically.

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2. User menu
User menu is comprised of: - Zone 1
-Time program (time programs, holiday
program)
-OTC curves
-HP (heat pump)
-HP errors (error log)
-DHW (DHW heating by heat pump)
-ThSt (thermal store charging)
-DHW recirculation
-Statistics (heat pump statistics)
-Operating data (temperatures and outputs
conditions)
-Others (Controller website username and
password reset)
-Time and date (time and date)
The keys , enable browsing, and the selected item can be entered by pressing OK.
User menu:
2.1 Zones – user settings
In this Menu, a user can adjust these parameters:
T comfort - setting comfort temperature in zone. This parameter makes sense only
when a room sensor is used.
T setback - setting setback temperature in zone. This parameter makes sense only
when a room sensor is used.
Note: During a day, the controller switches the desired zone temperatures between T day
and T night by the preset time schedule..
zone on - Switching on Zone on the User level. When zone is switched off on this
level, the circulation pump and valve outlets will be switched off. The
pump and valve outlets can be activated by frost protection, if active.

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Summer/winter mode state
- Switching on/off the function for automatic transition between summer
and winter modes. Summer/Winter mode is intended to turn off zone
heating when the outdoor temperature exceeds the preset threshold
summer temperature, and vice versa, to turn on zone heating when the
outdoor temperature stays below the preset threshold winter
temperature.
summer temp (°C) - If the outdoor temperature keeps above this value for the time set in
parameter summer time, the Controller will switch to summer mode.
summer time (h) - see summer temp.
winter temp (°C) - If the outdoor temperature keeps below this value for the time set in
parameter winter time, the Controller will switch to winter mode.
winter time (h) - see winter temp.
2.2 Time programs – user settings
Time programs can be set either for separate days, or in blocks Mo-Fr and Sa-Su.
When the program is being set for separate days, there are 2 transitions from Comfort to
Setback and 2 from Setback to Comfort for each day.
When the program is being set in blocks, there are similarly 2 transitions from Comfort to
Setback and 2 from Setback to Comfort for the blocks Mo-Fr and Sa-Su. Answering YES to
the question Copy program? will rewrite the respective time program blocks.
If program copying is not desired, let the question be with no and leave the menu by pressing
C.
Holiday mode – specific temperatures in zones can be set for the holiday period.
2.3 OTC curve – user settings
The controller works with a linear characteristics between separate points of the curve showing
how heating water temperature depends on the outdoor temperature. The real OTC curve is

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entered into the controller using a 4-point polyline (see Fig.) with points E1; I1 to E4; I4 (cf. the
display picture).
OTC points settings
Point I1 represents the highest temperature that can be calculated by the controller, while point
I4 represents the lowest temperature that can be calculated..
2.4 Heat pump control
A heat pump (or entire cascade if used) can be switched off by the user.
1 – HP cascade on / off (applies to all heat pumps).
2 – single HP on / off
Even when just one heat pump is used, HP cascade shall be on.
1
2

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2.5 Heat pump errors
In this menu item all heat pump errors can be reset and HP error log is available. The following
display is shown:
1 – error serial number (1 – 10)
2 – date & time of error occurrence
3 – information if the error is still active
4 – number of HP with error (1 – 10)
5 – error type
2.6 Setting temperatures for hot water storage tank heated by heat pump (DHW)
If this heating is enabled in the Service menu, a hot water storage tank is heated by a heat
pump. Heating is performed by the preset time schedule and the set Comfort and Setback
temperatures..
DHW on - Manual switching on DHW heating by a heat pump.
T comfort - Comfort temperature. Hot water storage tank is heated to this
temperature if it is set to “Day“ program for the time in question.
T setback - Setback temperature. Hot water storage tank is heated to this
temperature if it is set to “Night“ program for the time in question.
2.7 Setting temperatures for thermal store
ThSt on - Switchin on Thermal Store zonr .
T comfort - Comfort temperature. Thermal store gets heated up to this temperature
if the program is set to “Comfort” at the moment..
T setback - Setback temperature. Thermal store gets heated up to this temperature
if the program is set to “Setback“ at the moment.
1 2 4
5
3

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2.8 DHW recirculation and time program settings
Here DHW recirculation is enabled and the time schedule of the pump set. When
recirculation is on, it is performed following the time schedule set for each day. The time
schedule defines from-to operation times. For this period, circulation time and idle time can
be set if continuous operation is not desired. E.g. Monday from 6.00 a.m. to 10.30 p.m. the
recirculation pump will always run for 10 min. and then idle for 15 min.
on (off / on) - - Recirculation switched on..
circ. time (min) - - Circulation time setting.
idle time (min) - - Idle time setting.
circulation times - - Time setting for separate days when recirculation is on.
2.9 Statistics
HP statistics is displayed here, i.e. number of compressor starts and operating time.
2.10 Operating data
All input temperatures and logic values of controller output are displayed here.
An Eletter at the end of the temperature sensor line means that the temperature sensor is out
of its permitted working range. Its proper connection or the sensor itself shall be checked.
2.11 Others
website password reset (no,reset) - Controller website username and
password reset for User level. By resetting the default values are set
(username: user, password: user)..
language for error messages and HP state: - Language for error messages and HP
state shown on the display and website.
2.12 Time and date setting – user settings
Time and date shall be set to ensure proper operation of time programs. Clock is set in 24 hour
format, weekdays are selected using , keys, Mo-Fr.
Time and date setting

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After time and day are set, pressing key will show the display :
When this display is shown, time and date are saved into the controller’s real time circuit.
3 Additional modules
In the menu Additional modules on User level, user information on additional modules (if
present) can be viewed..
Fire Module:
Temperature (displayed °C) - Fireplace flow temperature.
Damper (displayed %) - Fireplace combustion-air damper opened.
DHW pump (on/off) - Display of pump on/off for DHW heated from Thermal Store or
fireplace.
UNI Module:
Output (on/off) - State of UNI universal module output displayed
T1 (displayed °C) - T1 temperature from UNI module
T2 (displayed °C) - T2 temperature from UNI module

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4 Web interface
The controller involves an integrated website showing a heating system overview and user
settings.
For its website access, the controller shall be connected to a LAN or directly to a PC using a
network cable. IP address of the controller can be retrieved by pressing the DISP key and
then the down arrow. This will display info on its network settings. Pressing DISP again will
return the controller to user display.
After the controller is connected to a LAN, entering its IP address into the browser address
bar, the login form will appear:
Login name for user level is: user,
Password for user level is: user.
After successful login the welcome screen appears for User level, making available pages with
settings.

IR 10 Controller
Service guide
IR10_CTC400
FW: 1.07
S 1 –Controller wiring:.........................................................................................................16
Description of terminals ....................................................................................................16
S2 -Technical data for IR10 Controller:.................................................................................16
S3 –Technical data for OpenTherm™ boiler control module IR1x OT .................................17
S4 –Controller installation:...................................................................................................17
S4.1 –Wiring diagram ......................................................................................................17
S 5 –Service menu:.............................................................................................................18
S 5.1 –setting service parameters for Zones 1 and 2: ......................................................18
S 5.2 –setting service parameters for heat pumps –HP: .................................................20
S 5.3 –HP operating data and History of Errors menu......................................................22
S 5.4 –setting service parameters for a switched backup source:....................................22
S 5.5 –setting service parameters for a backup source with OT:......................................23
S 5.6 –setting service parameters for DHW heating by a heat pump (DHW):...................24
S 5.7 –setting service parameters for thermal store heating:............................................24
S 5.8 –heat pump statistics:.............................................................................................24
S 5.9 –control code:.........................................................................................................24
S 5.10 –sensor management:..........................................................................................25
S 5.11 –other service parameters:...................................................................................25
S 5.12 –Fire module:........................................................................................................26
S 5.13 –UNI module:........................................................................................................27
S 5.14 –HW addresses of add-on modules:.....................................................................28
S 5.15 –IP addresses:......................................................................................................28
S 5.16 –RegulusRoute:....................................................................................................29
S 5.17 –output test:..........................................................................................................29
S6 –Web Server –service level:..........................................................................................30
S 6.1 Access to Service web interface, checking the IP address of the Controller: ...........30
S7 - RC21 IR Room Unit, wiring..........................................................................................31

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S 1 –Controller wiring:
Warning: Controller wiring may be performed by a qualified person only. Layman
adjustments of the controller may cause damage to parts of the system.
Description of terminals
S2 -Technical data for IR10 Controller:
Power supply
Voltage 24V DC ± 5%
Power consumption max.8 W
Installation power distribution box, DIN rail
IP rating IP 10B
Working temperatures 0 –50 °C
Relative humidity 10% - 95% non-condensing
R1-R6 Outputs
Current over common
COM terminal 10A
Relay current 3A (12 –230V AC)
Relay type electromechanical
0-10V Output
Output voltage 0-10V DC
Common conductor TGND
Max. current 10mA
Inputs:
Temperature inputs resistance sensors Pt 1000 (-90°C to 250 °C)
OT module comm. +
CTC400 - comm. 3 OT module comm. -
power - 24V
power + 24V
CTC400 - comm. 1 CIB modules (e.g. UNI module)
CTC400 - comm. 2 CIB modules (e.g. UNI module)
power L sensor common ground
HP circul. pump 0-10V DHW circ. pump control
DHW diverter valve 0-10V UNI output
ON/OFF source outside
thermal store
power L DHW
zone 1 valve opens heating water - zone 1
zone 1 valve closes sensor 1/RC21 dial
zone 1 pump zone 1/RC from relay

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Common terminal TGND
S3 –Technical data for OpenTherm™ boiler control module IR1x OT
Power supply:
Voltage 24 V DC ± 5%
Power consumption max. 0.24 W
Installation power distribution box, DIN rail
IP rating IP 10B
Working temperatures 0-50 °C
Relative humidity 10-95%, non-condensing
S4 –Controller installation:
The Controller is designed to be installed on DIN rail in a power distribution box. It may be
installed by a properly qualified person only!!
The Controller and power supply unit shall be installed next to each other (see wiring fig.). The
recommended min. cross section of the power supply conductors is 0.75mm2.
S4.1 –Wiring diagram
Fig. wiring of power supply unit, ripple control module, room control unit and heat pump to
the controller.

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S 5 –Service menu:
Warning: Service menu may be edited by a specialist only. Layman adjustments of
parameters in the Service menu may lead to damage to parts of the heating and/or solar
thermal system.
In the User menu, the Service option shall be selected in order to enter Service menu, and
confirmed by OK.
Entering a password to enter Service menu
By repeated pressing OK you browse password numbers. The numbers not being edited are
shown as *. After all numbers have been entered, press (down arrow). The default
service password is:: 1234.
It is highly recommended to change the default password to your own!
The Service menu consist of these items:
zone 1 - setting service parameters for Zone 1
HP - setting service parameters for heat pumps
HP oper. data - detailed info on heat pumps
on/off source - setting service parameters for ON/OFF source
OT source - setting service parameters for source with OT comm.
DHW - setting service parameters for DHW heating by a heat pump
ThSt - setting service parameters for thermal store heating
statistics - statistics for heat pump cascade (starts, operating hours)
control code - control type setting depending on the tank type used
sensors - temperature sensors management (offset, sensor condition)
other - setting other service parameters
Fire module - setting parameters for Fire add-on module
Uni module - setting parameters for UNI add-on module (universal)
Addit. module address - setting HW addresses for Fire and UNI add-on modules
IP address - setting IP address, subnet mask, default gateway, DNS server
RegulusRoute - setting RegulusRoute service
output test - controller output tests
S 5.1 –setting service parameters for Zones 1 and 2:
zone (on/off) - Service switch on / off the zone. When a zone is switched off
on service level, there is no zone frost protection function.
max.t do zone (°C) - Setting max. heating water temperature into a zone. The
desired temperature calculated by Controller will not exceed this set value.
min.t do zone (°C) - Setting min. heating water temperature into a zone. The
desired temperature calculated by Controller will not be below this set value.
room sensor (none, Pt, RC21, RCM2) - Selection if a temperature sensor (Pt1000), a
room unit (RC21) or room unit with display (RCM2) is used, or if the controller works without

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a room sensor. Or you can choose thermostat (therm) for switching between comfort and
setback temperature.
no room sens.recalc. DTheat./room (°C) - Setting a temperature drop for heating water
and room temperature. E.g. the value 3 means that if the heating water temperature changes
by 3°C, the room temperature will change by circa 1°C. This parameter applies when no
room sensor is present.
smooth change time day/night (min) -Time adjustment of how many minutes the
controller will need to change from comfort to setback temperature during daily scheduled
transition between day and night modes and vice versa.
Room temperature influence on heating water:
max. increase (°C) - Setting the max. permitted positive influence on the OTC
curve calculated by the Controller based on the difference between the real and desired
temperatures in zone (see fig. below).
max. decrease (°C) - Setting the max. permitted negative influence on the OTC
curve calculated by the Controller based on the difference between the real and desired
temperatures in zone (see fig. below).
Mixing valve:
shift time (sec) - - Setting the shift time between end positions of the mixing
valve.
manual gain - If the preset value is not acceptable and the control shall be
slowed down/speeded up, the switch shall be turned to yes. Then the following item, gain,
can be changed.
gain - determines the speed of control. The lower the parameter, the
slower is the control. It is not recommended to use values above 1.5. Such values can cause
valve cycling.
turn pump OFF (--) - If this function is on, the zone circulation pump will switch off
when the temperature in zone reaches the desired value (with ± 0.3 °C difference).
OTC setback (°C) - Setting the heating water temperature drop for transition from
Day to Setback mode. This parameter may be set to 0 when a room sensor is used.

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S 5.2 –setting service parameters for heat pumps –HP:
The Controller can manage either one CTC 400 heat pump or a cascade of up to 10 CTC 400
heat pumps.
After switching on or off one or more heat pumps and returning to user mode it is advisable to
reset the Controller by disconnecting it from power supply. It is necessary to wait a couple
seconds between de-energizing and energizing the Controller again. After it turns on, the type
and number of heat pumps are detected within seconds.
When a demand to start a HP appears, first a circulation pump starts, then with a delay also a
fan/brine pump of the respective heat pump, and finally the HP’s compressor. After the heat
pump switches off, it may not be switched on again before so called restart time expires that
is set to 10 minutes as default.
Heat pump No. 1 (address 1) is able to heat a hot water storage tank (DHW). The diverting
valve that distributes HP flow between a hot water storage tank and a thermal store diverts in
advance before the HP’s compressor starts.
HP (active/no) - this activates the function of CTC 400 heat pump control. It
shall be active even when just one heat pump is used.
diff. on (°C) - Temperature difference to switch on a heat pump / cascade. A
difference between the desired Thermal Store sensor temperature and the real temperature
to switch on the heat pump.
diff. off (°C) - Temperature difference to switch off a heat pump / cascade. A
difference between the desired Thermal Store sensor temperature and the real temperature
to switch off the heat pump.
RC for heat. (yes / no) - Ripple c. for heating. With no the heat pump runs disregarded
of the Ripple control signal.
Control sensors for HP cascade on/off
on (sensor list) - control sensor to switch on a HP/cascade
off (sensor list) - control sensor to switch off a HP/cascade. For a cascade, the
default choice “HP1 return” is not recommended.
No block by Ripple control under set outdoor temp. (yes/no) - HP is not blocked by
Ripple c. below the set outdoor temperature
.
outdoor temp. (°C) -Outdoor temperature below which HP will not be blocked.
delay of next HP in series (min)
- If more heat pumps in a cascade are used, each further heat
pump is switched on with this delay.
zone pumps off at DHW (yes/no) - If the heat pump runs in DHW heating mode,
zone circulation pumps are blocked.
close zone mixing valves at HW (yes/no)- If the heat pump runs in DHW heating mode,
mixing valves for heating zones are closed.
Switch at DHW heat.
- If there is a concurrent demand for DHW and space heating, HP No. 1 will oscillate
between DHW and space heating following the times: