KLIC-DI VRV DOCUMENT UPDATES Version Changes Page(s) Changes in the application programme: [1.12]_a • Minor corrections. Changes in the application programme: [1.11]_a • Internal optimization. Changes in the application programme: [1.10]_a • Improvement of error handling. [1.8]_b Clarifications for a correct configuration.
KLIC-DI VRV 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.
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.
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➢ 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.
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KLIC-DI VRV A/C System Wired control Figure 3. Connecting KLIC-DI to the P1/P2 bus with a wired remote control (slave mode) Connection Diagram Legend KLIC-DI Wired control A/C unit P1-P2 Connection base for the A/C unit Zennio input terminal The wired remote control needs to work contrary to the mode (slave/master) set for KLIC-DI.
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.
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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.
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KLIC-DI VRV Control type: permits defining the control type, master or slave, that KLIC-DI will work according to (important when KLIC-DI will be used together with the wired remote control of the A/C unit). The master control type will correspond to the device directly communicating with the machine.
KLIC-DI VRV 2.3 TESTING KLIC-DI FROM AN IR REMOTE KLIC-DI incorporates –next to the LED indicator– an infrared receiver that may be used together with any of the Zennio IR remotes (such as models ZN1IRZ38 and ZN1IRZAS) to check the proper control of the A/C machine from KLIC-DI.
KLIC-DI VRV 3 ETS PARAMETERISATION To begin with the parameterisation process of the KLIC-DI interface it is necessary, once the ETS programme has been opened, to import the database of the product (KLIC-DI SKY application programme). Next, the device should be added to the project. And then, one right-click on the device will permit selecting "Edit parameters", in order to start the configuration.
3.2 GENERAL From the General parameter window it is possible to select the advanced functionalities to be controlled from KLIC-DI (scenes, setpoint restriction, auto OFF, error handling, initial configuration…). All of them, which will be explained in the next section, are disabled by default.
KLIC-DI VRV 3.2.1 SCENES After enabling this function, the left menu will show a new tab named Scenes, from where it will be possible to set up different scenes (up to 4), consisting each of them in a set of orders to be sent to the A/C unit upon the reception, through the KNX bus and by means of the object “Scenes: Receive”, of the corresponding scene value...
3.2.2 SETPOINT RESTRICTION The A/C unit imposes restrictions to the temperature setpoint (typically, only values in the range 16ºC - 32ºC are available). Nevertheless, KLIC-DI offers the possibility of establishing new setpoint temperature limits provided that they are still within the A/C unit predefined limits (please refer to the A/C unit user manual for details).
(setpoint, fan speed, etc.) received during the open window state will in fact be taken into account by KLIC-DI and applied afterwards, once the Auto-Off object is back set to “0” (which will set the machine back to the state it had prior to the Auto-OFF).
"Internal Error: Communication" (1-Bit), which indicates if there is a problem in the communication between the KLIC-DI and the A/C unit or there that there is no unit connected. Thus, if its value is "1", there is an error; and if it is "0", there is no error.
A/C unit and to ANNEX II: Correspondence with A/C unit error codes). Important: in case of configuring KLIC-DI as master to operate together with the wired remote control, error handling functionality must be enabled in order not to cause an abnormal control or behaviour of the air machine.
3.2.6 TYPE OF CONTROL The control type of the KLIC-DI interface is also parameterised from the General window. This can be Master Remote Control or Slave Remote Control, depending on whether or not there is an additional wired remote control in the A/C system bus.
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KLIC-DI VRV Figure 13. Configuring the control type. That being said, it is possible to configure KLIC-DI as a master of mode or as a slave of mode through the “Master/Slave of Mode” parameter, once it has been configured as a Master Remote Control.
KLIC-DI VRV Being the exterior unit in the dry or fan modes, if the KLIC-DI that controls the slave of mode unit sends the heat mode then the slave of mode unit will switch to cool mode. Being the exterior unit in the heat mode, if the KLIC-DI that controls the slave of mode unit sends the cool mode then the slave of mode unit will switch to the fan mode.
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KLIC-DI VRV The control of the swing function is performed by assuming up to five fixed positions, and an option to make the slats stay permanently in motion or still. After enabling this parameter (“Yes”), two one-byte communication objects show up: “Swing [1byte]”...
Auto Mode: defines whether the “Auto” mode is available in the A/C unit or not. If set to “Yes”, KLIC-DI will switch the unit to that mode on the arrival of the value “0” through the “Mode” object (and of the value “1” through “Auto Mode”, in case of having activated the “Individual Modes”...
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(Auto, Cool, Heat, Fan and Dry, respectively) while the other five will be used by KLIC-DI to inform the KNX bus about the updated state of each function, as it is sent by the A/C machine.
KNX bus as percentage values, which will be then interpolated according to the specification explained below. The same interpolation will be applied over the values sent by KLIC-DI through the status object. ➢ Two levels: the values will be interpolated according to Table 3.
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KLIC-DI VRV Important: the number of levels must match with the number of levels of the A/C machine. Step control: enabling this feature ("Yes") brings up the "Fan [1bit]" one-bit object, which allows increasing (by sending the value "1") or decreasing (value "0") the fan speed by one level (for example, under a three-level...
KLIC-DI VRV ANNEX I. COMMUNICATION OBJECTS “Functional range” shows the values that, with independence of any other values permitted by the bus according to the object size, may be of any use or have a particular meaning because of the specifications or restrictions from both the KNX standard or the application programme itself.
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KLIC-DI VRV Number Size Flags Data Type (DPT) Implemented range Name Function Heat Mode 1=Set Heat Mode;0=Nothing 1 Bit C T - W U DPT_Switch Fan Mode 1=Set Fan Mode;0=Nothing 1 Bit C T - W U DPT_Switch Dry Mode 1=Set Dry Mode;0=Nothing...
KLIC-DI VRV ANNEX II: CORRESPONDENCE WITH A/C UNIT ERROR CODES Correspondence between the error codes (in decimal form) sent to the KNX bus by KLIC-DI and the error codes of the A/C units themselves. Code Code Code Code Code Code...
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