Daikin Altherma EKWHCTRL1 Guide

1
INSTALLATION, CONNECTION AND SETTINGS WALL MOUNTED
CONTROL EKWHCTRL1, EKRTCTRL1 FOR USE IN A MODBUS RTU
SERIAL NETWORK
Warnings
This instruction manual forms an integral part of the de-
vice and therefore must be carefully preserved and must
ALWAYS travel with it, even if you transfer the device to
another owner or relocate it to other premises.
If the manual gets damaged or lost, download a copy
from the website.
For a rapid and right assembly of the components follow
carefully the sequences described in the various sections.
All the operations must be performed by qualied person-
nel using the required Personal Protective Equipment.
This document is restricted in use to the terms of the law
and may not be copied or transferred to third parties with-
out the express authorization of the manufacturer.
Description
The terminal board +AB- of the INN-FR-B32 Printed circuit
board allows the connection of the same present in the con-
trol panels EKRTCTRL1, EKWHCTRL1 and EKWHCTRL0 to a se-
rial communication network "Modicon ModBus" RTU.
The EKWHCTRL0 kit can only be installed in combination
with the electronic controls EKWHCTRL1. In this case the
connection from the electronic board INN-FR_B32 is not
necessary because the electronic controls EKWHCTRL1
have a specic serial port to connect.
A INN-FR-B32 board
Electric connections
Preliminary warnings
Before each intervention:
• disconnect the device from the power mains by turning
the system master switch to "OFF"
• wait for the components to cool down in order to avoid
any burns
Make sure that there is no voltage before operating.
Any technical intervention before disconnecting the unit
from the power supply is forbidden.

2
Access to the printed circuit board
To access the electrical connection area:
– follow the instructions in the installation manual of the
appliance
To access the Printed circuit board:
– access the electrical connection area
– unscrew the xing screws of the electric box
– remove the cover
A Cover of the electrical box
B Fixing screws
C PCB
A
C
B
B
Electrical connections EKRTCTRL1
For connection of the electronic board to a "Modicon Mod-
Bus" RTU serial communication network:
– follow the indication on the connection diagram
– collegarsi al connettore ModBus con serigraa presente
sulla scheda
– connect respecting the indication "A" and "B"
For all other connections, refer to the diagrams and in-
structions in the installation manual.
+BA- ModBus RTU serial connection
H2 Hot water temperature probe 10 kΩ
AIR Optional air probe
M1 Fan motor DC Inverter
S1 Grid safety microswitch
CP Presence input sensor
Y1 (N-EV1) Water solenoid valve (230 V/50 Hz 1 A power output)
L-N 230 V/50 Hz electrical power supply connection
BO Boiler consent output (free contact max 1 A)
CH Chiller consent output (free contact max 1 A)
H2H4 AIR
N540022B

3
Electrical connections EKWHCTRL1 with on-board Printed circuit board EKWHCTRL0
A ModBus RTU Serial Connection
B Serial connection for fancoil
+A B -A A B B -
AB
For connection of the electronic board to a "Modicon Mod-
Bus" RTU serial communication network:
– connect to the terminal block on the wall control unit
For all other connections, refer to the diagrams and in-
structions in the installation manual.
The choice of materials and the routing of the connection
are fundamental for correct operation.
Use a bipolar shielded cable suitable for the RS485 serial
connection with a minimum section of 0,35 mm².
Keeping the bipolar cable separate from power supply
cables.
Chase out the wall in order to minimize the length of the
leads.
Complete the line with the 120 Ω resistance.
It is forbidden make "star" connections.
1. Terminal block for device connection
2. The terminal block for CP presence contact connection
3. PCB
3
1 2
3
CP
+A B -A A B B -
N540022B N540022B
L
N
Serial Port Features
Protocol
The serial communication protocol is “Modicon Modbus” in
RTU mode with the following settings:
• baudrate=9600
• data bits=8
• parità=nessuna
• stop bit=1
The implemented functions are:
• “03” and “06” respectively for the reading and writing of a
single register
• the main adjustment parameters (R/W), the acquired tem-
perature and the operating status are made available

4
Network accessible parameters
Conguration registers
The table below shows the addresses of the control parame-
ters resident on the INN-FR-B32 e EKWHCTRL0 board and the
EKRTCTRL1 and EKWHCTRL1 wall-mounted control panel.
In the typ column, it is specied if these registers are read
only (R) or writable (R/W). Please take into account the multi-
plication factor mlt during reading of the parameters.
The limit values must be respected!
Reg. Mnemonic Limit values Description typ mlt Std. value
000 T1 0...100.0 °C Air temperature R 0.1 -
001* T2 0...100.0 °C Hot water temperature H2 R 0.1 -
008 SP 0...100.0 °C Real setpoint R 0.1 -
009* OUT - Output status relay (see below) R Flag -
015* MOT_SET 0...1700 Motor speed (set) R 1 -
104* STAT - Flag status R Flag -
105 ALR_STAT - Flag alarms R Flag -
200 ADR 1...255 Device address (Note 1) R/W 1 1
201 PRG - Flag conguration R/W Flag 0
202 SPL 5.0...SPH °C Minimum setpoint R/W 0.1 16.0
203 SPH SPL...35.0 °C Maximum setpoint R/W 0.1 28.0
209 E_SAVING 0...8.5 °K Contact presence oset/stand-by R/W 0.1 0
210* MVV5 400...MVV3-4 Minimum speed in MIN and Night mode R/W 1 400
211* MVV4 MVV5...MVV2 Maximum speed in Night Mode and Mini-
mum in AUTO R/W 1 550
212* MVV3 MVV5...MVV1 Maximum speed in MIN and Minimum in
MAX R/W 1 680
230 MVVP3 MVV5...MVVP1 Maximum speed in MIN and Minimum in
MAX with Performance enabled R/W 1 920
213* MVV2 MVV4...1500 Maximum speed in AUTO R/W 1 1100
234 MVVP2 MVV4...1500 Maximum speed in AUTO with Perfor-
mance enabled R/W 1 1220
214* MVV1 MVV3...1500 Maximum speed in MAX R/W 1 1500
215* MVVP1 MVV1...1700 Maximum speed in MAX with Performance
enabled R/W 1 1700
218* LLO 0.0...100.0 °C Minimum water for heating R/W 0.1 30.0
219* LHI 0.0...100.0 °C Maximum water for cooling R/W 0.1 20.0
221 ACL 0...32000 hours Maintenance frequency 0 excluded R/W 1 0
222 ACL_TIM 0...ACL Motor fan working hours count R/W 1 -
231 SP SPL...SHP
SPL_W...SPH_W Absolute setpoint value (Note 2) R/W 0.1 20.0
233 Man 0/3 (inv)/5 (est) Seasonal auto/manual R/W 1 3
242 OS1 -12.0...12.0 °K T1 air probe oset R/W 0.1 0
243* OS2 -12.0...12.0 °K H2 water probe oset R/W 0.1 0
244* OS3 -12.0...12.0 °K H4 water probe oset R/W 0.1 0
245 SPL_W 5.0...SPH_W °C WEB Minimum setpoint R/W 0.1 20.0
246 SPH_W SPL_W...40 °C WEB Maximum setpoint R/W 0.1 24.0
247 WEB - WEB Flag (see dedicated paragraph) R/W Flag 0
* Only for INN-FR-B32 board
Note 1: The device address can be set individually on various devices by writing it on register 200 or set manually via the keyboard
of the EKRTCTRL1 - EKWHCTRL1 kits (see paragraph 6).
Note 2: Absolute setpoint value from 5 to 40. For the setpoint, write the value within the selected scale.

5
Status and conguration ag registers:
You can set the mode and view the alarms and status of the controller via the relevant ags of some registers.
Operation mode setting register PRG, address 201
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
--------Stby - - LOCK - PRG
– PRG: 000=Sutomatic; 001=Silent; 010=Night; 011=Maximum
– LOCK: 0= Keyboard enabled; 1= Keyboard disabled locally
– Stby: 0=Normal operation; 1=Stand-by mode
– 8-15: System Flags reserved, do not change the status
Output status relay register OUT, address 009
7 6 5 4 3 2 1 0
- - - - BOILER CHILLER EV2 EV1
Flag STAT status, address 104
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0H4
asnt
H2
asnt
Com
err. stby test alrm Antig 0 B.A. F.V. H4
F.V.
H2
Mod.
Risc.
Mod.
Ra.
– Mod. Risc./Mod. Rafr: Active mode;
– F.V. H2: Fan stop water not suitable on H2;
– F.V. H4: Fan stop water not suitable on H4;
– B.A.: Stop for unsuitable water (machine in standby for 45 minutes)
– Antig.: Device in antifreeze mode
– Alrm: At least one alarm present
– Test: Instrument in test mode for testing
– Stby: Device in standby
– Com err: Timeout master (vers. Centralised B32) of 300sec
– H2 asnt: on board with H2 probe, the probe is absent on start up
– H4 asnt: on board with H4 probe, the probe is absent on start up
Alarm ag ALR_STAT, address 105
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 2 AIR
M5 Filter H2 n. id
SW
GRL Mot Hi Res
H4
n. id H2 Acq. Dan. H4 AIR Com.
– Com.: “Blind” version communication error
– AIR: AIR probe
– H4: H4 probe
– Acq. Dan.: Block for harmful water
– H2: H2 probe
– H4 n. id: Coil hot water temperature not suitable (version 2 and 4 pipes)
– Hi Res: High temperature resistance
– Mot.: Motor fault
– GRID: GRID contact open
– H2 n. id: Main coil water temperature not suitable (version 2 and 4 pipes)
– Filtro: Maintenance required (dirty lter)
– 2 AIR M4 (only for M4 control panel): Communication error with fancoil with remote air probe or presence of more than
one board with air probe ('E2’ displayed)

6
Advanced functions (address 247)
For the interaction with a webserver supervisor, some control
ags have been added. The ags are grouped in a single reg-
ister, accessible in reading/writing.
If the power supply is cut o, the data is maintained. The
selections carried out by the user are maintained if the
power supply is cut o, except for “FLAG 7”that will be de-
leted.
If restrictions are enabled for pressing keys, the icon will
ash on the display.
FLAG # FUNCTION EFFECT
FLAG 0 (247.0) Led WEB OFF If = 1, the icon is always set to o
FLAG 1 (247.0) Forced o The machine is o and the user cannot switch it on. When
the button is pressed, the icon ashes temporarily.
FLAG 2 (247.2) Disables the rotation of the programmes
The user cannot change the program. The other keys
maintain their normal functions.
When a program button is pressed, the icon ashes
temporarily.
FLAG 3 (247.3) Disables select/deselect of the stby func-
tion
The user cannot switch the unit on and o.
When the button is pressed, the ashes temporarily.
FLAG 4 (247.4) Inhibits the extremes
The user can adjust the set point within the preset scale,
but the extremes 5°C and 40°C are disabled.
Pressing the SET+ e SET- keys outside the limits makes the
icon ash temporarily . In AUTO, the icon does not ash
because normal regulation is set.
FLAG 5 (247.5) Enables the set point restriction
The user can adjust the setpoint within SPL_W-SPH_W,
preventing o-scale values at the same time.
Pressing the SET+ and SET– keys outside the limits makes
the icon ash temporarily .
FLAG 6 (247.6) Disables all keys
The user cannot perform any action.
All the keys are blocked and when any button is pressed
the icon ashes temporarily.
FLAG 7 (247.7)
Webserver function bypassed for one
hour
and SET+ keys for 5 sec.
The status of this ag indicates the user’s decision to by-
pass the webserver settings for 1 hour.
Condition: FLAG 1…6=1 and SET+ keys pressed for at
least 5 seconds. “nr” (not restricted) is displayed for 4 sec-
onds.
Action: FLAG 7=1 inhibition of FLAGS 1/6 for 1 hour.
FLAG 8 (247.8) Seasonal key disabled The seasonal key is locked.
If the key is pressed, the icon ashes temporarily.
The setpoint can normally be adjusted locally within the lim-
its SPL-SPH or SPL_W and SPH_W with Flag 5=1.
To enter the setpoint, write the absolute value within the se-
lected scale in register 231 SP.
Device address setting
From the keyboards of the EKRTCTRL1, EKWHCTRL1 and
EDB649 kits (or using a “detachable” one for the ESD659 kits)
the peripheral address (associated with register 200) can be
displayed and modied.
To view and change the address:
with the panel in standby
press and hold the AUTO key for 5 seconds
– address 001 appears ashing
with the and keys set a value from 1 to 255
press the “standby” key or wait 10 seconds to conrm the setting
It is advisable to write the addresses for the individual fancoils
in a table so that they can be easily identied once they are
recognised by the system.
Proceed as follows

7
Fancoil address Destination
Address 001 Leave free!
Address 002 Kitchen
Address 003 Living room
Address 004 Bedroom 1
... ...
Do not assign any fancoil to 001. This precaution will allow
any replacements and/or additions of network devices in
the future.
Troubleshooting
Problem Cause Solution
You cannot turn the unit on with the but-
ton
The button is disabled and the program-
ming has set the status to o
Check that ag 1 of the WEB register (247)
is not active
The CP input of the board is closed
If the E_SAVING (209) register is set to 0
when the CP contact presence closes, the
PCB goes into standby mode.
Check the input status.
You cannot turn o the appliance using
the button or change function All the keys are disabled Check that Flag 6 of the WEB register (247) is not active
It is not possible to increase or decrease
the temperature setting outside of set
values
The programming imposes a limit range
for adjusting the temperatures
Check that Flag 5 of the WEB register (247)
is not active and, if necessary, change the
values of the SPL_W (245) and SPH_W
(246) registers
The technical data and aesthetic characteristics of the products are subject to change. DAIKIN reserves the right to modify them at any time without notice.