Zennio ZN1CL-KLIC-D Installation and operation manual


KNKLogicalInterfaceforClimate
ZN1CL–KLIC‐DI     
TechnicalNote:InstallationNote 
© Zennio Avance y Tecnología S.L. Edition 5 For further information www.zennio.com Page. 1of 5
INTRODUCTION
KLIC-DI is an interface that allows a bidirectional communication between a KNX domotic system and the commercial
air-conditioning units of the commercial and industrial series.
This device controls all basic functionalities of this type of air conditioning machines as well as it handles AC unit error
codes and communication errors that may arise.
MASTER CONTROL VS. SLAVE CONTROL
The great majority of internal units of commercial series and variable refrigerant volume systems are controlled with a
wired control that is connected to the terminal P1/P2 available in these units.
KLIC-DI is compatible with the use of wired controls. Nevertheless, it is important to establish one of these controls as
master control and the other as slave control. This way, if the wired control is the master, KLIC-DI must be configured
as slave in the parameterization of the device and vice versa, if the KLIC-DI is the master control, the wired control
must be configured as slave.
Note: For configuring the wired control as master or slave: remove the casing of the
control, locate the switch marked as M/S (master/slave) in the PCB and select the
position of the switch. This switch is usually located in the lower left-hand corner or in
the upper right-hand corner. It is necessary to remove the bus and connect it again in
order to set the new configuration.
It is hardly recommended to check the configuration of the wired control when
carrying out the installation.
INSTALLATION
KLIC-DI is a device of reduced dimensions (90 x 60 x 35 mm) with two terminals for integrating air conditioning
machines of the commercial series and variable refrigerant volume units in a KNX domotic system:
EIB connector, for its connection to KNX system
bus.
P1/P2 terminal, for its connection to air-
conditioning internal unit through a 2-wired cable
with cross-section area lower than 0.75mm2.
This device does not require any external power supply, since it is fed through the KNX bus.
For installing the KLIC-DI, the device must be connected to KNX bus, through the EIB connector, in the same way as
any KNX device.
Nr Description
1 EIB connector
2 Programming and checking LED. For more information about the color code, look up the
manual
3 Programming button
4 2-wire communication terminal


KNKLogicalInterfaceforClimate
ZN1CL–KLIC‐DI     
TechnicalNote:InstallationNote 
© Zennio Avance y Tecnología S.L. Edition 5 For further information www.zennio.com Page. 2of 5
On the other hand, for connecting the device KLIC-DI to the air-conditioning internal
unit, the terminal P1/P2 located in the PCB of the AC unit must be connected to
terminal P1/P2 located in one side of the KLIC-DI (this connector is included as
accessorize with the device).
If a wired control is included in the installation, the device KLIC-DI can be also
connected to the terminal P1/P2 of the wired control.
In order to locate the terminal P1/P2 in the PCB of the wired control, remove the
casing of the wired control and look for the terminals marked as P/P1 and N/P2.
CONNECTIONS DIAGRAMS
KLIC-DI (master, without wired control in the bus):
KLIC-DI (master/slave) + wired control (slave/master):
LeyendConnectionDiagrams
AKLIC–DI
Bwiredcontrol
Cinternalunit
P1‐P2connectionbus
1‐2Zennio’sconnection
terminal
*
Thewiredcontrolmust
workasslavewhen
KLIC‐DIismasterand
viceversa
Note: The wired remote controller BRC1E51A7 can only work as MASTER. In case this remote controller is installed,
KLIC-DI should be configured as SLAVE.
Note: The infrared remote controllers BRC7* and BRC4* can only work as SLAVE. In case any of these remote
controllers is installed, KLIC-DI should be configured as MASTER.
Once the device is powered from the KNX bus, the physical address and the corresponding application program
KLIC-DI can be downloaded.
Note: Each KLIC-DI is
able to control only one
internal unit.
It is not possible to
connect several internal
units in series and
control them with KLIC-
DI.


KNKLogicalInterfaceforClimate
ZN1CL–KLIC‐DI     
TechnicalNote:InstallationNote 
© Zennio Avance y Tecnología S.L. Edition 5 For further information www.zennio.com Page. 3of 5
MaestroEsclavo
SPECIAL INSTALLATIONS CASES
Variable refrigerant volume system without sin Heat Recovery Unit
Variable refrigerant volume system of 3 pipes with Heat recovery unit
Warning Connection in Series Recommendation for joint control of units
One master control per internal unit
One master of mode per installation
Master of mode
(Heat/Cool) of all
installation. See
Manual KLIC-DI
MasterMasterSlave Slave
Slave Slave
Masterand
Masterof
mode
Masterand
Masterof
mode
Master Slave
MasterandMasterof
modeoftheinternal
unitsconnectedtothe
heatrecoveryunit
Slave
For carrying out a joint control of the A/C units, it is
recommended to install a touch
p
anel Z38i
One master control per heat recovery unit
(HRU). Several indoor units connected to
the same heat recover
y
unit.
KNXBus
Esclavo
Indoor
unit
Indoor
unit
Indoor
unit
Outdoor
unit
Slave Master
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Outdoor
unit
HRUHRUHRU
Unidad interior Unidad interior
It is not possible to connect in series the internal units
and control them from onl
y
one KLIC-DI
Unidad interior Unidad interior


KNKLogicalInterfaceforClimate
ZN1CL–KLIC‐DI     
TechnicalNote:InstallationNote 
© Zennio Avance y Tecnología S.L. Edition 5 For further information www.zennio.com Page. 4of 5
CENTRAL CONTROL OF AC UNITS
KLIC-DI cannot be used in AC systems with any controller other than the wired/wireless remote controller, such as AC
central controllers connected to F1/F2 bus.
AIR TEMPERATURE REGULATION – AC UNIT FUNCTIONING
Air conditioning units carry out a regulation of the airflow temperature according with the setpoint temperature they
receive and a reference temperature, which is measured by a temperature probe in the air conditioning system. In AC
systems, this reference temperature is provided by the indoor unit internal temperature probe, the wired remote
temperature probe or a temperature probe connected to the indoor unit (placed in the room).
Thanks to KLIC-DI, a temperature that is received from KNX bus can be used as reference temperature instead of
the wired remote controller temperature probe. The installer must select the wired remote controller as reference
temperature and KLIC-DI as master.
Thus, the possible reference temperatures for regulation of airflow temperature are:
In any of the cases above there are some temperature ranges that establish whether the temperature probe of the
indoor unit or one of the other external temperatures are used. These ranges depend on the difference between
setpoint temperature and the temperature measured by the indoor unit probe, as well as the indoor unit working mode
(heating/cooling):
Indoor unit cooling
When the real temperature is lower than setpoint and rises above it (due to an external process of heating),
reference temperature is:
- Indoor unit temperature probe, UP TO 1ºC below the setpoint.
- External temperature probe, in a range BETWEEN 1ºC below and 3ºC above the setpoint.
- Indoor unit temperature probe, FROM 3ºC above the setpoint.
When the real temperature is higher than setpoint and drops below it, reference temperature is:
- Indoor unit temperature probe, UP TO 1ºC above the setpoint.
- External temperature probe, in a range BETWEEN 1ºC above and 3ºC below the setpoint.
- Indoor unit temperature probe, FROM 3ºC below the setpoint.
Indoor unit heating (air in the room is usually cooler than the one that is pumped by the indoor unit)
When the real temperature is below the setpoint and it rises above it reference temperature is:
- Indoor unit temperature probe, UP TO 1ºC above the setpoint.
- External temperature probe, FROM 1ºC above the setpoint.
When the real temperature is above the setpoint and it drops below it (due to an external process of cooling),
reference temperature is:
- External temperature probe, UP TO 1ºC below the setpoint.
- Indoor unit temperature probe, FROM 1ºC below the setpoint.
Indoor Unit Wired remote
controller
Temperature probe
connected to Indoor unit KLIC-DI – KNX
Temperature Probe


KNKLogicalInterfaceforClimate
ZN1CL–KLIC‐DI     
TechnicalNote:InstallationNote 
© Zennio Avance y Tecnología S.L. Edition 5 For further information www.zennio.com Page. 5of 5