Daikin EKRTRB User manual

Installation manual
Room thermostat English
Installation manual
Room thermostat
EKRTRB
EKRTETS

Table of contents
Installation manual
2
EKRTRB+EKRTETS
Room thermostat
4P677092-1 – 2021.10
Table of contents
1 About the documentation 2
1.1 About this document.................................................................. 2
2 Specific installer safety instructions 2
3 About the room thermostat 2
4 About the box 3
4.1 To unpack the room thermostat ................................................ 3
5 Preparation 3
5.1 Installation site requirements..................................................... 3
6 Installation 3
6.1 To install the room thermostat................................................... 3
6.2 To install the receiver ................................................................ 4
6.3 To install the external temperature sensor as floor
temperature sensor ................................................................... 5
7 Configuration 5
7.1 User menu................................................................................. 5
7.1.1 To enter the user menu............................................... 5
7.1.2 User parameters ......................................................... 5
7.2 Installer menu............................................................................ 6
7.2.1 To enter the installer menu ......................................... 6
7.2.2 Installer parameters .................................................... 6
7.3 Receiver-thermostat radio configuration ................................... 6
7.4 Temperature sensor calibration................................................. 7
7.4.1 To calibrate the temperature sensor........................... 7
7.5 Dew prevention ......................................................................... 7
8 Technical specifications 7
1 About the documentation
1.1 About this document
Target audience
Authorised installers
Documentation set
This document is part of a documentation set. The complete set
consists of:
▪Installation manual:
▪ Installation instructions
▪ Format: Paper (supplied in the kit)
▪Operation manual:
▪ Installation instructions
▪ Format: Paper (supplied in the kit)
Latest revisions of the supplied documentation may be available on
the regional Daikin website or via your dealer.
The original documentation is written in English. All other languages
are translations.
2 Specific installer safety
instructions
Always observe the following safety instructions and regulations.
CAUTION
Do NOT pinch the wiring.
WARNING
Protect the power supply with a fuse of 0.065A (X2M) and
select a power cable that is in accordance with applicable
legislation.
WARNING
A main switch or other means for disconnection, having a
contact separation in all poles, MUST be incorporated in
the fixed wiring in accordance with applicable legislation.
WARNING
All field wiring and components MUST be installed by a
licensed electrician and MUST comply with the applicable
legislation.
WARNING
Water entering the receiver may cause an electric leak or
may damage the internal electronic parts.
WARNING
Before obtaining access to terminals, all power circuits
MUST be interrupted.
3 About the room thermostat
The room thermostat can be used to control Daikin systems. This
includes radiator heating and floor heating/cooling applications. The
room thermostat is typically connected to Daikin units. See the
"Application guidelines" chapter in the installer reference guide of
your unit for examples.
▪ In case of floor heating-only applications, the room thermostat can
be connected to the individual motorised valve of the floor heating
loop.
▪ If a floor heating-only application is used in combination with fan
coil units, each fan coil unit should have its dedicated fan coil
thermostat.
Optionally, the external temperature sensor EKRTETS can be
connected to the thermostat and used as:
▪ external ambient temperature sensor to control the room
temperature (instead of the internal temperature sensor of the
room thermostat). In this case, install the temperature sensor
where you want to control the ambient temperature.
▪ floor temperature sensor (only for floor heating/cooling
applications) to prevent dew on the floor in case of floor cooling. In
this case, install the temperature sensor in the floor. See "6.3To
install the external temperature sensor as floor temperature
sensor"[45] for more information.

4 About the box
Installation manual
3
EKRTRB+EKRTETS
Room thermostat
4P677092-1 – 2021.10
4 About the box
4.1 To unpack the room thermostat
a
b
d
g
h
c
e
f
aPlugs and screws (for the room thermostat)
bPlugs and screws (for the receiver)
cReceiver
dBatteries (for the room thermostat)
eRoom thermostat
fRoom thermostat holder
gInstallation manual
hOperation manual
5 Preparation
5.1 Installation site requirements
▪ Do NOT install the room thermostat within 50 cm of any
appliances or devices that emit electronic or wireless signals.
▪ Do NOT install the room thermostat near or above radiators or
heat emitters.
▪ Mount the room thermostat at least 1.5m from the ground.
▪ Mind the following spacing installation guidelines:
1.5 m
>0.2 m
When selecting the installation location of the receiver, also take into
account the following recommendations for optimum signal
reception:
▪ The receiver is designed to be installed indoors, typically close the
indoor unit.
▪ The receiver is designed to be installed in a vertical orientation
only.
▪ Do NOT install the receiver in metal boxes or near vertical metal
pipes and electronic circuits.
▪ Mount the receiver at least 1.5m from the ground.
6 Installation
6.1 To install the room thermostat
Wall-mounted installation
In case the optional external temperature sensor has been installed
as a floor temperature sensor, mounting the room thermostat to the
wall is required.
1Only in case of external temperature sensor: use a flathead
screwdriver to remove the connector from the back of the room
thermostat.
2Insert the sensor wiring in the terminal slots and tighten the
screws with a flathead screwdriver.
3Slide terminal block back onto the exposed pins on the back of
the room thermostat.
CAUTION
Do NOT pinch the wiring.
4Open the battery compartments and remove the battery
insulators.
Result: The screw holes become visible.
5Drill holes in the wall taking the dimensions of the thermostat
into account and insert the supplied plugs in the holes.
6Fasten the room thermostat to the wall with the supplied
screws.

6 Installation
Installation manual
4
EKRTRB+EKRTETS
Room thermostat
4P677092-1 – 2021.10
7Cover up the cutout holes with electrical tape (field supply).
8Insert the included batteries in the battery compartments.
9Close the battery compartments.
Result: The room thermostat is ready for use.
Tabletop installation
You can only use the thermostat as a tabletop solution when the
external temperature sensor is NOT installed. In this case, the room
thermostat functions as a completely wireless unit and can be put in
its holder anywhere in the house.
10 Open the battery compartments and remove the battery
insulators.
11 Insert the included batteries in the battery compartments.
12 Put the room thermostat into its holder.
Result: The room thermostat is ready for use.
6.2 To install the receiver
WARNING
Before obtaining access to terminals, all power circuits
MUST be interrupted.
WARNING
Water entering the receiver may cause an electric leak or
may damage the internal electronic parts.
Prerequisite: You have considered the installation site requirements
for the receiver when selecting the installation location. See
"5.1Installation site requirements"[43] for more information.
1Drill holes in the wall, taking into account the dimensions of the
receiver.
2Insert the supplied plugs in the holes.
3Fasten the receiver to the wall with the supplied screws.
4Unscrew the front cover screws of the receiver and remove the
front cover.
5Unscrew both screws of the lower right cable bracket and
remove the bracket.
6According to your application, perform the wiring:
WARNING
All field wiring and components MUST be installed by a
licensed electrician and MUST comply with the applicable
legislation.
Unit
Refer to the wiring diagram or the addendum book for optional
equipment of the unit. Use a wire size between 0.75 mm2 and
1.50mm2. Example unit:
EKRTRB
HHeating demand
CCooling demand
Motorised valve
Wire the motorised valve and the receiver as shown below (heating
only applications). Use a wire size between 0.75mm2 and 1.50mm2.
EKRTRB
1N~50 Hz
250 VAC
1N~50 Hz
250 VAC
HHeating demand
CCooling demand

7 Configuration
Installation manual
5
EKRTRB+EKRTETS
Room thermostat
4P677092-1 – 2021.10
The output relays (H and C are voltage-free contacts) can handle a
maximum load of 5 A — 230 V. For heating only application, wire
connection C is not to be installed.
WARNING
Protect the power supply with a fuse of 0.065A (X2M) and
select a power cable that is in accordance with applicable
legislation.
WARNING
A main switch or other means for disconnection, having a
contact separation in all poles, MUST be incorporated in
the fixed wiring in accordance with applicable legislation.
7Put the cable bracket back in place and tighten the screws.
8Put the receiver cover back in place and tighten the screws.
INFORMATION
To fully complete the installation of the receiver, configure
the radio connection between the receiver and the room
thermostat. See "7.3 Receiver-thermostat radio
configuration"[46] for more information.
NOTICE
To ensure access, keep the front of the receiver clear at all
times.
6.3 To install the external temperature
sensor as floor temperature sensor
As it should be integrated into the floor, the installation of EKRTETS
should be planned and performed in advance. When EKRTETS is
installed as a floor temperature sensor, the room thermostat must be
mounted to the wall. See "6.1To install the room thermostat"[43] for
more information.
INFORMATION
The following procedure only serves as an example. Your
actual situation may differ from what is represented here.
Prerequisite: You have considered the site requirements for the
room thermostat when selecting the installation location. See
"5.1Installation site requirements"[43] for more information.
1Integrate the temperature sensor in an electrical conduit
(Ø16mm maximum) in the floor construction.
b
c d
a
aRoom thermostat
bExternal temperature sensor conduit
cExternal temperature sensor (EKRTETS)
dWater pipes
2Pass the temperature sensor cable through the conduit until it
reaches the seal.
3Connect the temperature sensor wiring to the room thermostat
as described in "6.1To install the room thermostat"[43].
4On the room thermostat, set the value for parameter 20 (rEGU)
to FLR in the installer menu. For more information about the
installer menu, see "7.2Installer menu"[46].
NOTICE
Properly seal the temperature sensor electrical conduit in
order to protect the room thermostat from hot air currents
and to allow for possible future replacement of the
temperature sensor.
7 Configuration
7.1 User menu
The user menu allows you to set basic room thermostat parameters.
7.1.1 To enter the user menu
1Press and hold for 5 seconds.
Result: The first parameter (rF INI) of the user menu appears on the
display.
To exit the user menu, use the navigation buttons to select the "End"
parameter and press .
7.1.2 User parameters
Parameter Description Possible values(a)
# Name
00 rF INI Radio configuration mode
01 dEG Temperature unit used
on display
▪°C
▪ °F
02 __:__ Time format used on
display
▪24H (24 hour
display)
▪ 12H (12 hour display)
03 dst Daylight summer time
change
▪yes (enabled)
▪ no (disabled)
04 AirC Internal temperature
sensor calibration.
See "7.4Temperature
sensor
calibration"[47] for
more information.
05 AMbC External temperature
sensor calibration
06 HG Anti-freeze temperature
in holiday mode
▪10°C
▪ Range: 0.5°C~10°C
07 ITCS Intelligent Temperature
Control System(b)
▪yes (enabled)
▪ no (disabled)
08 Clr ALL Clear user settings: press and hold for 5
seconds to reset all setpoints and user
parameters to their default settings.
09 CHAn –
10 VErS Software version
11 End Exit the user menu. Press to exit.
(a) The default values are listed in bold.
(b) If enabled, this function will activate the installation in advance
(up to a maximum of 2 hours) to ensure that the desired setpoint
is reached at the appropriate time according to the set program.
With every program change, the room thermostat measures the
time taken by the installation to reach the setpoint to compensate
for any temperature differences that may be present at different
times. This allows you to make program changes without needing
to adjust the temperature in advance, because the room
thermostat does this automatically.

7 Configuration
Installation manual
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EKRTRB+EKRTETS
Room thermostat
4P677092-1 – 2021.10
7.2 Installer menu
The installer menu is used to modify advanced parameters that are
not available in the user menu.
7.2.1 To enter the installer menu
1Press and hold for 5 seconds.
Result: The first parameter (rEGU) of the installer menu appears on
the display.
To exit the installer menu, use and to select the End
parameter and press .
7.2.2 Installer parameters
Parameter Description Possible values(a)
# Name
20 rEGU Sensor type ▪ AIR: internal
temperature sensor
of the room
thermostat
▪ amb: EKRTETS
installed as external
temperature sensor
▪ FLR: EKRTETS
installed as floor
sensor
▪ FL.L: –
21 MOde Operation mode ▪ Hot: heating mode
▪ Cld: cooling mode
▪ rEv: reversible mode
▪ Aut: automatic mode
21 Cld Enable cooling mode
submenu (select Cld
and press to enter
the submenu)
▪yes (enabled)
▪ no (disabled)
22 AirS View measured values of the internal
temperature sensor (displayed in °C/°F)
23 AmbS View measured values of the external ambient
temperature sensor (displayed in °C/°F)
24 RecS View measured values of the floor temperature
sensor (displayed in °C/°F)
25 FL.Lo –
26 FL.Hi –
27 reg Regulation type ▪ bp: proportional band
(PWM 2°C/10min)
▪ hys: hysteresis
(0.5°C)
28 UF1 Concrete type (use
when 27=bp)(b)
▪uf1: liquid concrete
with low thickness
(<6cm)
▪ uf2: traditional
concrete with
thickness >6cm
29 Bp1 –
30 Wir –
31 min Minimum settable
temperature value(c)
▪5°C
▪ Range: 5°C~15°C
32 MAX Maximum settable
temperature value(c)
▪37°C
▪ Range: 20°C~37°C
Parameter Description Possible values(a)
# Name
33 Win Open window detection
function
▪yes (enabled)
▪ no (disabled)
34 rH Humidity threshold
value
▪55%
▪ Range: 0%~100%
35 dEv Dew prevention
function(b)
▪yes (enabled)
▪ no (disabled)
36 Clr EEp Clears the room thermostat memory and reset all
parameters to their default values. Press and
hold for a few seconds to reset the room
thermostat to its factory settings.
37 End Exit the installer menu. Press to exit.
(a) The default values are listed in bold.
(b) Only in case EKRTETS is installed as floor temperature sensor.
(c) Applies to heating and cooling operation.
7.3 Receiver-thermostat radio
configuration
In order to make communication between the room thermostat and
the receiver possible, you need to configure the radio connection.
1Put the receiver in radio configuration mode by pressing the
push button for 10 seconds.
Result: The RF LED slowly blinks orange.
2On the room thermostat, press and hold for 5 seconds.
Result: The room thermostat display shows the rF INI
parameter. The thermostat will now send radio signals to the
receiver. On the room thermostat display, blinks.
3Wait a few seconds for both the receiver and the thermostat to
exit radio configuration mode.
Result: The room thermostat display displays the main screen
and the RF LED on the receiver turns OFF to indicate that
pairing is successful.
4Verify that the radio signals are correctly received by the
receiver.
Receiver LED overview
a b c d
aPush button
bPush button LED
cContact LED
dRF LED
Push button
LED
Contact LED RF LED Meaning
– Red – Heating
demand
(thermostat
mode)
– Blue – Cooling
demand
(thermostat
mode)
Green – – Forced heating
(manual mode)

8 Technical specifications
Installation manual
7
EKRTRB+EKRTETS
Room thermostat
4P677092-1 – 2021.10
Push button
LED
Contact LED RF LED Meaning
Green, 50% – – Forced cooling
(manual mode)
Green, 10% – – Forced OFF
(manual mode)
– – Orange,
blinking slowly
Radio
configuration
mode
– – Orange,
blinking quickly
RF signal lost
– – Orange, quick
short blink
RF reception
indicator
Red/Green,
blinking
– – Thermostat
sensor error
Orange Blue/Red Orange Receiver reset(a)
(a) To reset the receiver, press and hold the push button for 30
seconds.
INFORMATION
Pressing the push button will turn OFF the receiver. When
the receiver is turned off, the integrated frost protection
(4°C) remains active.
7.4 Temperature sensor calibration
Both the internal temperature sensor of the room thermostat and the
(optional) external temperature sensor can be calibrated. It is
recommended to calibrate the sensor(s) after installation. The
procedure is the same for both the internal temperature sensor and
the optional external temperature sensor.
7.4.1 To calibrate the temperature sensor
1Using a thermometer, measure the temperature in the room at
1.5m distance from the floor for at least 1 hour.
2Press and hold on the room thermostat for 5 seconds to
enter the user menu.
3Use to navigation keys to select AirC or AMbC parameter,
depending on whether you want to calibrate the internal or
(optional) external temperature sensor.
4Press OK to modify the selected parameter. By default it is set
to "no".
5Use and to enter the measured value.
6Press OK to confirm.
Result: The message "yes" is displayed and the value is stored in
the internal memory of the room thermostat.
If needed, the stored calibration value can be erased by pressing .
The message "no" will be displayed, confirming the value has been
erased.
7.5 Dew prevention
For reversible systems, the room thermostat offers 2 ways of
managing humidity in order to prevent condensation while cooling.
Humidity percentage threshold
You can set a threshold value for the humidity percentage.
Whenever the room thermostat detects that the humidity percentage
exceeds the set threshold, cooling demand is ceased to prevent
condensation. Whenever this is the case, blinks on the room
thermostat display. To change the threshold value (default 55%), set
the value for parameter 34 ("rH") to the desired value in the installer
menu.
Dew prevention function with floor temperature sensor
If the optional external temperature sensor EKRTETS is installed as
floor temperature sensor, parameter 35 ("dEv") can be set to "yes"
in the installer menu to enable the dew prevention function.
When enabled, this function will continuously compare the
temperature measured by the floor temperature sensor against the
dew point. The dew point is calculated based on the room
temperature and humidity. When the floor temperature drops below
or comes too close to the dew point, cooling demand is stopped
temporarily to prevent any condensation on the floor. While the dew
prevention function is active, blinks on the room thermostat display.
8 Technical specifications
Room thermostat (EKRTRB)
Temperature read out precision Steps of 0.1°C
Operating temperature 0°C~40°C
Setpoint temperature range 5°C~37°C, in steps of 0.5°C
Holiday mode temperature range 0.5°C~10°C
Electrical protection Class II – IP30 (indoor use,
pollution degree 2)
Power supply 2 alkaline AAA LR03 1.5V
batteries
Battery autonomy ~2 years, depending on usage
conditions
Sensing element of internal
temperature sensor
NTC 10kΩ at 25°C
Receiver (EKRTRB)
Operating temperature 0°C~40°C
Electrical protection Class II – IPx3 (indoor use,
pollution degree 2)
Power supply 1N~50Hz 230V
Radio frequency and receiving
zone
868MHz, <10mW, range of
approximately 100m in open
space, 30m in residential
environment
Output relays Maximum load 5A, 230V
Maximum fuse amp 3A
Power consumption 15W (maximum)
Immunity against voltage surges Category III (2.5kV)
Type of automatic action of the
thermostat
1C
External temperature sensor (EKRTETS)
Sensing element NTC 10kΩ at 25°C

4P677092-1 2021.10
Copyright 2021 Daikin
4P677092-1 0000000T
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