Daikin EKRTW User manual

INSTALLATION MANUAL
EKRTW
Room thermostat

60
12534
87
2
1
3
±1.5 m
1.5 m
±1.5 m
>0.2 m
>0.2 m
>0.2 m
>0.2 m
1
2
3

EKRTW
Room thermostat
4PW44896-1C
Installation manual
1
Contents
1. Introduction ............................................................................ 1
2. Installation of EKRTW ............................................................ 2
3. Setting up codes in the installer menu ................................... 5
4. Technical characteristics ...................................................... 10
1. Introduction
The room thermostat EKRTW can be used to control floor
heating-only applications and floor heating/cooling applications.
It is typically connected to the indoor unit. Refer to the "Typical
application examples" in the Installation manual of the indoor
unit.
■ In case of floor heating-only applications the room
thermostat can also be connected to the individual motorized
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.
EKRTW Room thermostat Installation manual
Read this manual attentively before starting up the unit.
Do not throw it away. Keep it in your files for future
reference.
Improper installation or attachment of equipment or
accessories could result in electric shock, short-circuit,
leaks, fire or other damage to the equipment. Be sure
only to use accessories made by Daikin which are
specifically designed for the use with the equipment and
have them installed by a professional.
If unsure of installation procedures or use, always
contact your dealer for advice and information.

Installation manual
2
EKRTW
Room thermostat
4PW44896-1C
2. Installation of EKRTW
The EKRTW thermostat is wall-mounted, with supplied screws
and plugs. Refer to figure 1.
Cabling towards the indoor system (field supply) should be
foreseen in advance taking the suggestions for an ideal
installation location into account. Refer to figure 2.
1 At the left of the thermostat, gently push the lid.
2 Remove the front cover by pulling it towards you.
3 Unscrew the screw of the cable holder in the bottom left
corner of the back part of the thermostat and remove the
transparent cable protection.
4 Remove the battery insulator.
5 Drill holes in the wall taking the dimensions of the thermostat
into account and insert the supplied plugs in the holes.
Refer to figure 3 (unit of measurement: mm).
Before obtaining access to terminals, all power
supply circuits must be interrupted.
3
3
2
1
4
3

EKRTW
Room thermostat
4PW44896-1C
Installation manual
3
6 Pass the indoor unit or motorized valve wiring through the
back of the thermostat.
7 According your application, perform the wiring.
7a When connected to the indoor unit, wire the indoor unit and
the thermostat as shown below.
For heating-only applications, wire 17-C or 2-C is not to be
installed.
Use wire size 0.75~1.50 mm
2
.
EKHB(H/X)007AC*** EKHB(H/X)008 EKHB(H/X)016
H Heating demand
C Cooling demand
23 17 15 13
HCLN
H
C
com
EKRTW
X1M
1234
HCLN
H
C
com
EKRTW
X1M
X2M

Installation manual
4
EKRTW
Room thermostat
4PW44896-1C
7b When connected to the motorized valve, wire the motorized
valve and the thermostat as shown below (for heating-only
applications).
The output relays (H and C are voltage-free contacts) can
handle a maximum load of 5 A - 230 VAC.
8 Fasten the thermostat with the supplied screws.
9 Put the transparent cable protection back into place and fix
the cable protection with the screw.
10 Close the thermostat cover.
11 Remove the protective film from the LCD.
Be careful not to pinch the wiring when fastening.
LN
1N~50 Hz 230 VAC
H
C
com
EKRTW
X1M

EKRTW
Room thermostat
4PW44896-1C
Installation manual
5
3. Setting up codes in the installer menu
You can set up codes, starting from the time and date menu (in
advanced mode).
1 Activate the advanced mode by pressing > during 5
seconds in OFF mode (
D
).
2 Navigate to the date and clock setting menu (
G
) by pressing
> .
3 Press
>
and keep it pressed while now pressing
=
during 10 seconds.
y
is displayed next to
4®
.
4 Press
<
or
>
to consult the current settings of the
codes.
5 To modify codes, press
+
,
-
or
=
.
The value is flashing when being modified.
6 Press
+
or
-
to increase or decrease the code value by
1 step.
To put a code back to its default value, press
+
and
-
at
the same time.
7 Press
=
to save your selection.
You can exit this code menu by going to the "
/
" code and
pressing
=
.
NOTE
As a consequence of a customized configuration, it
is not abnormal that some codes are no longer
accessible.

Installation manual
6
EKRTW
Room thermostat
4PW44896-1C
3.1. Set-up for heating/cooling applications
For heating/cooling applications, set the following codes:
3.2. Overview of all codes
Following codes can be changed in the installer menu:
1st
code 2nd
code Description Required setting
5® 01
Cooling mode present?
ÚêÒ
1st
code 2nd
code Description Default Range Step
Readout codes
4® 01
+
R
Calibration of
internal sensor.
Actual
temperature +
offset are
displayed. The
h
symbol
appears when
the offset
deviates from 0.
Offset = 0 Offset:
–5°C~5°C 0.1°C
Installation codes
5® 01
Cooling mode
present?
≈œ ÚêÒ
/
≈œ
—

EKRTW
Room thermostat
4PW44896-1C
Installation manual
7
Temperature control codes
Daikin advizes not to change below temperature control
parameters.They are set for an optimal use of the floor cooling/
heating application.
6® 02
Use
proportional
band control?
ÚêÒ ÚêÒ
(proportional
band)
/ ≈œ
(hysteresis)
—
03
Hysteresis
value
00.5 00.5
~
02.0
0.1°C
04 + p
Duration
proportional
band (heating).
020 010 ~ 060
1 min.
05
+
p
Minimum "on"
time (heat
demand).
007 002
~
6® 04
/2 1 min.
06
+
p
Minimum delay
between 2
heating cycles.
003 001
~
6® 04
/2 1 min.
07
+
o
Duration
proportional
band (cooling).
020 010
~
060
1 min.
08
+
o
Minimum "on"
time (cool
demand).
007 002
~
6® 07
/2 1 min.
09
+
o
Minimum delay
between 2
cooling cycles.
003 001
~
6® 07
/2 1 min.
10
Value of
proportional
band.
02.0 01.0
~
04.0
0.1°C
11
Compensating
value.
00.0 00.0 ~ 08.0
0.1°C
1st
code 2nd code Description Default Range Step

Installation manual
8
EKRTW
Room thermostat
4PW44896-1C
6® 12
Upper setpoint
limitation.
037 22.0
~
37.0
1°C
13
Lower setpoint
limitation.
004 04.0
~
20.0
1°C
Schedule timer codes
8® 01
Enable cooling/
heating link for
the user-
defined
schedules
◊1
and
◊2
?
When enabled
and a user-
defined
schedule is
selected in the
schedule timer
setting menu:
in heating
mode, schedule
◊1 will be active;
in cooling
mode, schedule
◊2
will be active.
≈œ ÚêÒ
/
≈œ
—
1st
code 2nd code Description Default Range Step