Zennio ZN1CL-IRSC User manual

IRSC
IRSC-Zone. Zoning control
ZN1CL-IRSC
Program version: 1.6
Manual edition: a
PRODUCT MANUAL

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INDEX
Document updates ............................................................................................................................................... 3
1. Introduction.................................................................................................................................................. 4
1.1. IRSC controller...................................................................................................................................... 4
1.2. Installation............................................................................................................................................ 5
1.3. IRSC-ZONE Application program........................................................................................................... 6
2. Configuration ................................................................................................................................................ 8
2.1. General concepts.................................................................................................................................. 8
3. ETS Parameterization.................................................................................................................................... 9
3.1. Default configuration ........................................................................................................................... 9
3.2. General ............................................................................................................................................... 11
3.3. Mode .................................................................................................................................................. 12
3.4. Fan ...................................................................................................................................................... 15
3.5. Temperature....................................................................................................................................... 16
3.6. Thermostat ......................................................................................................................................... 18
3.7. Reset................................................................................................................................................... 19
Annex I. Installation scheme .............................................................................................................................. 22
Annex II. Grille control........................................................................................................................................ 23
Annex III. Practical example ............................................................................................................................... 25
Annex IV. Communication objects ..................................................................................................................... 27

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DOCUMENT UPDATES
Version
Modifications
Page(s)
1.6a
Changes since version 1.5 of the application program:
Possibility to send read requests to the bus –after a download or a
device reset from ETS–of certain objects in order to recover the state
of the device.
-
Additional information about the basics of the device.
6-7
Extended information about the Mode parameter.
8
Detailed information about zone-associated objects.
9-10
Parameter "Zone Update on Start-up"
12
Explanation about the available modes.
13
Extended explanation about mode changes.
14
Note referring to Annex II.
14
Extended explanation about the “Force...” parameters
15
Additional explanations/notes about how temperature restrictions apply
16-17
Information referred to parameter "Temperature returned from external
sensor"
17
Additional explanation about the behaviour of the grille when thermostatic
control has not been enabled.
18
Reference to Annex II.
19
Parameter "Zone Update on Start-up" and notes about sendings on power
recovery and device reset events.
20-21
New Annex II
23-24
Application example extended and moved to a new section (Annex III)
25-26
General improvement of this English version of the manual –texts and minor
issues.
-

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1. INTRODUCTION
1.1. IRSC CONTROLLER
Zennio IRSC controller allows controlling air conditioning systems with infrared receivers
(such as splits, ducted units with an integrated infrared interface, etc). IRSC combines the following
features in the same device:
Control of the main functionalities of A/C units (On/Off, temperature, mode, fan speed,
etc).
Compatibility with most air conditioning manufacturers (please consult the
Correspondence Table, available at: http://www.zennio.com.
Device management through infrared codes:
Split units (application program IRSC-PLUS)
A/V systems (application program IRSC-OPEN)
Ducted cooling/heating machines, with several clima zones (application program
IRSC-ZONE)
Figure 1.1. IRSC controller

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1.2. INSTALLATION
IRSC controller is connected to the KNX bus via the bus connecting terminals.
Once the controller is provided with power from the KNX bus, both the physical address and the
associated application program may be downloaded.
In figure 1.2, the connection scheme of IRSC is shown.
Figure 1.2. IRSC. Connection scheme
The functionality of the main elements is described below:
Programming button (3): a short press on this button sets the device into the
programming mode, and the associated LED (2) light in red. If this button is held while
plugging the device into the KNX bus, IRSC goes into secure mode.
IR emitter (5): infrared flashing diode to send commands to the split. It must be placed in
front of the air conditioning IR Receiver (see Figure 1.3).
Air connector base (6): this is for inserting the air connector, through which the IR
commands will be sent from IRSC to the split.
Figure 1.3 shows the installation diagram of the IRSC IR emitter (5) in the clima unit.
1.-KNX connector
2.- Programming LED
3.- Programming button
4.- Air connector
5.- IR emitter
6.-Air connector base

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Figure 1.3. IRSC-Clima unit connection
Once IRSC is connected and the system is properly parameterized, it will be possible to control the
A/C unit from a touch panel of the installation (from the InZennio Z38i or InZennio Z41 touch panels,
for instance), thus achieving an easier and more intuitive control.
Note: Each air ducted machine must be controlled only by one IRSC device.
To obtain a more detailed information about the technical features of IRSC, as well as security and
installation information, please read the controller Datasheet, included in the original package of the
device and also available at: http://www.zennio.com.
1.3. IRSC-ZONE APPLICATION PROGRAM
The IRSC-Zone application program has been developed for controlling Air-
cooling/Heating ducted machines, thus allowing acclimatizing, in the same KNX installation, up to
8 rooms (or zones) that have an air-conditioning output regulated by gates or motorized grilles.
Grilles are the final elements of the air ducts (in charge of distributing the air from the central unit to
every zone) and permit the air output to the different zones of the climate system.
IRSC-Zone is therefore in charge of two complementary functions.
Sending the necessary orders (ON/OFF, temperature, fan, etc) to the central a/c
machine through infrared commands.
Sending the necessary orders to the external KNX actuator that controls the air grilles.

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The independent control of these grilles makes it possible, in short, that a sole machine with a
unique setpoint temperature controls each of the zones as convenient, no matter if their own
setpoint temperatures are different.
Controlling the central machine is made by taking into account the number of the zones to be
acclimatized, as well as their own setpoints:
The IRSC-Zone application program calculates the setpoint temperature that the central
machine needs to be sent depending on what the desired temperatures for the different zones
are.
It is optionally possible to make this calculation also depend on an additional external
temperature, provided by a KNX sensor located next to the a/c machine, thus making it
possible to correct undesired turn-offs or adjustments made by the machine itself when it
detects that the ambient temperature of its actual location (which may be subject to punctual
heat or cold sources) is similar to the setpoint, although the ambient temperatures of the
zones are not.
Moreover, this calculation will also consider any “addition temperature” other than zero
that may have been parameterized (see section 3.5).
Apart from sending temperature setpoints and other orders to the air machine, IRSC is, as already
stated, responsible for controlling the air grilles of the zones, which implies selecting and applying
an algorithm which, depending on the setpoint and reference temperatures of every zone, will
continously determine whether the grille of each zone must stay open or not.
All the concepts mentioned so far are explained in detail in section 3. ETS Parameterization.
Moreover, for further details and for a complete application example, please refer to the Annexes of
this manual.

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2. CONFIGURATION
2.1. GENERAL CONCEPTS
The IRSC-Zone application program permits controlling air conditioning systems from
different manufacturers in an equivalent manner as when they are controlled through the infrared
remote control of the machine.
Zennio´s homepage (http://www.zennio.com) contains a correspondence table where a certain
number (from 0 to 255) is provided depending on the model of the A/C machine to be controlled.
This number is the first parameter to be set in ETS.
The IRSC-Zone application also permits selecting the number of the zones of the KNX installation
that will be controlled by the same central A/C machine, which can be 1 –8.
Moreover, the following functionalities of the A/C machine can be configured:
ON/OFF switch of each enabled zone.
Setpoint temperature to acclimatize each enabled zone.
Working modes: the desired working mode (Automatic, Heat, Cool, Fan, Dry) can be
chosen through independent binary objects (one per mode) or through a sole object (only one
object for mode selection). Moreover, apart from these conventional controls, it is possible to
enable a simplified control, which only permits commuting from Heat to Cold and vice versa.
Fan speed: step control or precise control.
Thermostat: it is possible to enable and configure this functionality for Heat mode, Cool
mode or both.
For further details and examples please refer to the Annexes of this manual.

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ETS PARAMETERIZATION
To begin with the parameterization process of the IRSC controller it is necessary, once the
ETS program has been opened, to import the data base of the product (IRSC-Zone application
program).
Next, the device should be added to the project where desired. And then, one right-click on the
device will permit selecting "Edit parameters", in order to start the configuration.
In the following sections a detailed explanation can be found about each of the different
functionalities of IRSC-Zone in ETS.
2.2. DEFAULT CONFIGURATION
This section shows the default configuration the device parameterization starts from.
Figure 3.1. IRSC-Zone. Default topology
The following communication objects appear: "A/C Unit - ON/OFF Status", "A/C Unit - Setpoint
Status" and "A/C Unit - Fan Status", all of them associated to the sending of the basic statuses of
the A/C unit (ON/OFF, setpoint and fan)
Seven more objects, with different lengths, are shown, referred in this case to different
functionalities that may be controlled for Zone 1 (Zone 1 is the only zone enabled by default). These
are:
Zone X –ON/OFF: permits turning ON or OFF each of the enabled zones independently.
Being ON implies the normal function of the zone, i.e., the automatic control of its airing grille
and the inclusion of its setpoint temperature into the calculation process of the general
setpoint temperature sent to the air conditioning machine. On the other hand, when a zone is

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turned OFF, an order to close the grille is sent to the bus, after which the setpoint of the zone
is not considered anymore (until the zone is turned on again) for the calculation of the central
setpoint.
Zone X –ON/OFF Status: indicates the current state (ON/OFF) of the corresponding
zone.
Zone X –Consigna: permits controlling the desired setpoint temperature (in ºC) for the
corresponding zone.
Zone X –Setpoint Status: indicates the current value (in ºC) of the setpoint temperature
of the corresponding zone.
Zone X –Grille control: sends orders (“0”=Close, “1”=Open) to the bus to control the
airing grille of the corresponding zone.
Zona X –Grille Status Reception: permits the arrival from the bus of open/close orders
for the airing grille of the corresponding zone, which –when appropriate–causes the device
responds sending an updated order to the bus through the “Zone X –Grille control”object.
Zone X –Reference temperature: permits the reception from the bus of a reference
temperature, for example measured by a sensor installed inside the corresponding zone.
If more zones are enabled (see section 3.2), the same seven objects will repeat, but referred to
each of the enabled zones.
When entering for the first time the parameter edition of IRSC-Zone, the following window will be
shown:
Figure 3.2. Configuration screen by default
As seen in figure 3.2, the configuration screen is divided into the following main windows: