KLIC-DI VRV
KNX Interface for
Variable Refrigerant Volume A/C Units
ZN1CL-KLIC-DI
USER MANUAL
Application programme version: [1.12]
User manual edition: [1.12]_a
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KLIC-DI VRV
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CONTENTS
Contents ........................................................................................................................................ 2
Document updates ........................................................................................................................ 3
1 Introduction .......................................................................................................................... 4
1.1 KLIC-DI ........................................................................................................................... 4
1.2 Installation ..................................................................................................................... 5
2 Configuration......................................................................................................................... 8
2.1 Basic control .................................................................................................................. 8
2.2 Advanced functionality ................................................................................................. 8
2.3 Testing KLIC-DI from an IR remote .............................................................................. 11
3 ETS Parameterisation .......................................................................................................... 12
3.1 Default configuration .................................................................................................. 12
3.2 General ........................................................................................................................ 13
3.2.1 Scenes ................................................................................................................. 14
3.2.2 Setpoint restriction ............................................................................................. 15
3.2.3 Auto OFF ............................................................................................................. 16
3.2.4 Error handling ..................................................................................................... 17
3.2.5 Initial configuration............................................................................................. 18
3.2.6 Type of control .................................................................................................... 19
3.2.7 Swing ................................................................................................................... 21
3.2.8 Indoor temperature sending time ...................................................................... 23
3.3 Mode ........................................................................................................................... 23
3.4 Fan ............................................................................................................................... 25
ANNEX I. Communication objects ............................................................................................... 27
ANNEX II: Correspondence with A/C unit error codes ................................................................ 29
KLIC-DI VRV
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DOCUMENT UPDATES
Version
Changes
Page(s)
[1.12]_a
Changes in the application programme:
• Minor corrections.
-
[1.11]_a
Changes in the application programme:
• Internal optimization.
-
[1.10]_a
Changes in the application programme:
• Improvement of error handling.
-
[1.8]_b
Clarifications for a correct configuration.
-
[1.8]_a
Changes in the application programme:
• Compatibility with the new BRC1E53A7 remote control.
-
[1.7]_a
Changes in the application programme:
• Improvement of the “Auto-Off” function.
• Initialization after download.
• Simplified Mode Reception object added
-
[1.6]_a
Changes in the application programme:
• Compatibility with mode “Auto”.
-
[1.5]_a
Changes in the application programme:
• Improvement of the compatibility with certain new A/C
system models and their distinctive features.
-
[1.4]_a
Changes in the application programme:
• Improvement of the compatibility with certain new A/C
system models to prevent possible communication
interruptions during the start-up.
-
KLIC-DI VRV
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1 INTRODUCTION
1.1 KLIC-DI
KLIC-DI is an interface that allows full-duplex communication between a KNX domotic
system and commercial and industrial air-conditioning units, through two possible
application programmes.
KLIC-DI VRV, for industrial A/C systems with a variable refrigerant volume.
KLIC-DI SKY, for other commercial A/C systems.
Because of this bidirectional communication, the air conditioning unit can be
controlled in the same manner as through its own controls, while the real status of the
air-conditioning unit is monitored and periodically sent to the KNX bus to inform other
devices.
KLIC-DI includes the following features, among others:
Bidirectional control over industrial and commercial A/C units.
Control of the main features of the A/C units: On/Off, Temperature, Mode of
operation, Fan speed, Swing, etc.
Error management to handle specific A/C unit error codes as well as any
communication errors that may arise.
LED indicator that allows monitoring the bidirectional traffic flow.
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1.2 INSTALLATION
Figure 1. Element scheme
KLIC-DI connects to the KNX bus via the corresponding built-in terminals (1). On the
other hand, this device is connected to the internal PCB board of the A/C unit (P1/P2
connectors), using a 2-wire cable. See Figure 2.
Important: in case of aiming to control the air conditioning both through KLIC-DI and
through the incorporated wired remote control of the actual unit, please refer to the
“Control types” subsection, under section 2.2 in order to ensure that both of them have
been properly configured.
Once the device is provided with power supply from the KNX bus, both the physical
address and the desired KLIC-DI application programme can be downloaded.
This device does not need any additional external power as it is entirely powered
through the KNX bus.
The functionality of the main elements is explained below:
Programming button (3): a short press on this button will set the device into
the programming mode, making the red component of the LED (2) indicator
light up. If the button is held while plugging the device into the KNX bus,
KLIC-DI will go into secure mode, making the red colour of the LED blink
intermittently.
LED indicator (2): three-colour (red, blue and green) light indicator that
reflects the current state of the device. Apart from showing whether the
device is under the programming or secure modes, this LED will also show
1.- KNX connector
2.- LED indicator
3.- Programming button
4.- Input terminal for the two-wire
communication cable.
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react to the communication between KLIC-DI and the A/C unit, which may be
particularly useful during the installation process. The meaning of the different
colour components is explained next:
➢ Red component (still): KLIC-DI is under the programming mode.
➢ Red component (blinking): KLIC-DI is under the secure mode.
➢ Green component (still): KLIC-DI is not connected to the A/C unit, or the
A/C unit is disconnected from the power supply.
➢ Green component (blinking): transmission or data flow from the A/C
machine towards KLIC-DI.
➢ Blue component (blinking): transmission or data flow from KLIC-DI
towards the A/C machine.
Note: each colour component works with independence of the others.
Therefore, for example, if KLIC-DI is set into the programming mode being
the A/C unit disconnected, the perceived colour will be typically a still orange,
as the red and green components are lighting (still).
Input terminal for the two-wire communication cable (4): slot for the
connection of the two-wire communication cable that will connect KLIC-DI to
the A/C unit. The other end of the cable, therefore, is intended to be
connected to the P1/P2 ports from the PCB board of the internal unit, or from
the wired remote control of the A/C unit.
Figure 2. Connecting KLIC-DI to the P1/P2 bus (master mode).
A/C System
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Figure 3. Connecting KLIC-DI to the P1/P2 bus with a wired remote control (slave mode)
Connection Diagram Legend
A
KLIC-DI
B
Wired control
C
A/C unit
P1-P2
Connection base for the A/C unit
1-2
Zennio input terminal
*
The wired remote control needs to work contrary to the mode
(slave/master) set for KLIC-DI. See section 2.2.
For detailed information about the technical features of KLIC-DI, as well as on security
and installation procedures, please refer to the device Datasheet, included within the
device packaging and also available at http://www.zennio.com. Reading the KLIC-DI
installation note, available at the same website, is also encouraged.
Note: sections below this point will focus on the KLIC-DI VRV application program for
variable refrigerant volume machines, and its specific configuration. Please refer to the
KLIC-DI SKY user manual in case of running that particular application program.
A/C System
Wired control
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2 CONFIGURATION
2.1 BASIC CONTROL
KLIC-DI allows controlling and monitoring an air-conditioning unit the same way it
would be through the wired remote control provided with it.
Through the KNX bus, the following basic functionalities of the air conditioning unit can
be controlled:
ON/OFF switch of the air-conditioning unit.
Temperature setpoint between 16 and 32 ºC.
Operation mode: Automatic, Heat, Cool, Fan and Dry.
Fan speed: configuration of 2 or 3 speed levels.
Important: check which levels are provided by the A/C unit.
Swing function: still slat positions or continuous motion.
These functionalities imply changes in the state of the machine, which are periodically
sent to KLIC-DI. When KLIC-DI receives from the machine a state different to the
previous one, it updates the status objects and sends them to the KNX bus.
2.2 ADVANCED FUNCTIONALITY
Apart from basic control functions over the air-conditioning system, KLIC-DI offers
other advanced functionalities that provide added value to the wired remote control:
Scene configuration: allows establishing a specific parameter combination
to be sent to the machine in order to generate a determined climate ambient.
KLIC-DI allows configuring up to 4 different scenes.
Temporary switch-off: allows an automatic and temporary switch-off of the
machine (after a pre-established delay, if set up) when the communication
object associated to this function changes its value. A typical application of
this functionality is linking a window sensor to the automatic switch-off object,
which will make KLIC-DI switch the machine off while the window is open.
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Setpoint restriction: temperature setpoints of variable refrigerant volume air
conditioning systems are typically limited to the range 16-32ºC (please refer
to the user manual of the actual unit). This function of the KLIC-DI device
allows configuring custom temperature ranges in ETS for the Heat and Cool
modes, provided that the custom values stay within the original range. In case
of receiving a temperature command from the KNX bus with a value
exceeding the configured range, the temperature value sent by KLIC-DI to the
machine will be the corresponding limit value.
Internal temperature and Reference temperature: variable refrigerant
volume A/C units incorporate several sensors for measuring the temperature
at different internal points. KLIC-DI monitors one of them, referred to as
internal temperature, and makes use of it to inform the KNX bus through the
“Internal Temperature (status)” communication object.
On the other hand, through the “Reference Temperature” object, KLIC-DI is
able to receive periodical temperature values from the KNX bus, as measured
by an external sensor. These values will be afterwards sent to the airconditioner machine, which may eventually use them for internal calculation.
This reference temperature object just works when KLIC-DI is master and
assigns a default value of 25ºC.
Error management: allows sending messages to the KNX bus informing
about errors. Error management handles both external errors from the A/C
unit itself and those that may arise in the KLIC-DI – A/C unit communication
process.
Apart from reporting external errors, a numerical code associated with them
is also provided and must be consulted in the specific user manual of the
installed air-conditioning system, according to ANNEX II: Correspondence
with A/C unit error codes.
Initial configuration: allows establishing the desired initial parameters for the
state of the A/C unit after downloading or restarting the device from ETS, or
after recovering from a bus failure. The following may be configured: ON/OFF
state, temperature, mode, fan and swing of the machine. It is also possible to
send the initial values to the KNX bus after the start-up.
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