UATYA100BBAY1 - Air Conditioning DAIKIN - Free user manual and instructions

USER MANUAL UATYA100BBAY1 DAIKIN

2 Quick commissioning 6

2.1 Main functions 6

2.2 Switching the unit on and o󰀨 6

2.2.1 Switch the unit on and o from the display. 6

2.2.2 Switch the unit on and o from external OK signal 6

2.2.3 Switch the unit on and o from the BMS 6

2.3 Change of set points 7

2.3.1 Setpoint editing from display 7

2.3.2 Setpoint editing from BMS 7

2.4 Change language 7

2.5 Changing the date and time 8

2.6 Setting of time bands 8

3 Graphics on the display 9

3.1 Graphic conventions 9

3.1.1 Icons and symbols 9

5.2.2 Dynamic setpoint from external air probe in cooling mode 18

5.2.3 Dynamic setpoint from external air probe in heating mode 19

5.3.3 Disabling heating sources depending on external air temperature 25

5.4 humidity control 26

5.4.1 Relative humidity control with proportional control 27

5.5 Air humidication 28

5.5.1 Ancillary built-in humidier functions 28Translation from original instructions

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5.6 Air dehumidication 28

5.7 Power supply control 29

5.8 Damper management 30

5.9 Auxiliary heating 33

5.9.1 Controlled devices 34

5.9.2 Post heating 34

5.9.3 Activation according to time bands 35

We reserve the right to make changes without any prior notice.UATYA4P645203-1 1 INTRODUCTION

Some information on the use of this manual. The purpose of this manual is to provide all the necessary information for the use of the controller and relevant software application in the units indicated on the cover. Information regarding installation of the units and relevant tests and checks for the rst starting is not given in this manual. We thank in advance all those who will wish to let us know of any errors, omissions, sections requiring further explanation or operations that have not been included.

1.1.1 c.pCO controller functions

The software application for the electronic microprocessor controller, series c.pCO, was designed to manage Rooftop units. Through appropriate conguration, this gives the possibility of managing a wide range of units with relevant specic functionalities. Management of Rooftop units means monitoring that all component parts operate safely throughout the various operating cycles. The family of c.pCO electronic microprocessor controllers includes various module sizes. The software is exible to the extent that the use of modules is optimized, meaning the modules used for reach application are those having the necessary number of inputs and outputs. The c.pCO board is connected to the various modules and communicates with them via a high speed, highly reliable eld bus. The controller user interface consists in a colour, 4.3” touch-screen display.Translation from original instructionsPackaged Rooftop We reserve the right to make changes without any prior notice.UATYA4P645203-1 2 QUICK COMMISSIONING

The necessary instructions for working on the controller, with regard to the main functions of the unit, are given below.

Use the “On/O󰀨” icon on the main screen to go to the page where the buttons to start and stop the unit are featured. The top area of the screen shows the status of the unit: the “On/O󰀨” icon is provided in the central area. A tap on the icon changes the status of the unit from “on” to “o󰀨” and vice versa.

2.2.2 Switchtheunitonando󰀨fromexternalOKsignal

In order to switch the unit on and o󰀨 from external OK signal, make sure the feature is active. To switch the unit on, close the external OK signal. To switch it o󰀨, open it. The external OK signal should be connected to terminals "1" and "56" in the terminal board. In order to switch the unit on and o󰀨 from external OK signal, make sure the feature is active. To switch the unit on, close the external OK signal. To switch it o󰀨, open it. The external OK signal should be connected to terminals "1" and "2" present in the terminal board. The external OK signal must be a potential-free contact.

2.2.3 Switchtheunitonando󰀨fromtheBMS

In order to switch the unit on and o󰀨 from the BMS, make sure the feature is active. See dedicated BMS management document.Translation from original instructions Packaged Rooftop

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2.3 Change of set points

2.3.1 Setpoint editing from display

Go to the main menu and press “Setpoint” to access the screens where functions are displayed whose setpoints need to be managed. Go to the “Setpoint” sub menu and select the function whose setpoint is to be changed. Scroll the parameters until the desired parameter setpoint is achieved. Select the setpoint parameter to enable the edit keypad. Set the new value and apply the green tick to conrm. Units featuring mode switching have a setpoint for cooling “ST7” and a setpoint for heating “STH7”. The setpoint for cooling “ST7” must necessarily be higher than the setpoint for heating “STH7”. If values that do not meet this condition are set by mistake, the controller activates alarm “AL183”. Alarm “AL183” is displayed for warning purposes only.

2.3.2 Setpoint editing from BMS

Setpoints can be edited from the BMS only if this function is enabled. See dedicated BMS management document.

When in the main menu, press “Languages” to access the screens in which the available languages are displayed. If the language you are looking for is not in the screen, use the arrows to nd it. The selected language becomes active as soon as it is selected.Translation from original instructions Packaged Rooftop

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2.5 Changing the date and time

Scroll the main menu until you nd the “Congurations” group and select it. Select “Date and Time” in the “Congurations” menu and access the screen where it is possible to edit the date and time setpoints. Select the write icon in the bottom right-hand side to access the edit screen. When a green value is tapped, a virtual keypad appears: use the keypad to set the new values. After entering the new value, tick it to conrm it. After changing the values, tap the Save icon on the bottom right-hand side to save the new setpoints. The arrow on the left is used to go back to the previous screen without saving the changed parameters.

2.6 Setting of time bands

Access to the screen where the time bands are set up requires entry of a password. Scroll the main menu until you nd the “Parameters” group and select it. Scroll the “Parameters” menu until you nd the “ES Energy saving” group. After selecting “ES Energy saving”, access is gained to the group of parameters used to set up the time bands. Refer to the relevant chapter for more information on the parameter setup logic.Translation from original instructionsPackaged Rooftop We reserve the right to make changes without any prior notice.UATYA4P645203-1

3 GRAPHICS ON THE DISPLAY

During development of the application, particular attention was given to intuitive use of the user interface.

3.1 Graphic conventions

The touch-screen display is designed to browse the interface. Provision has been made for some intuitive icon buttons that are tapped to easily browse the featured screens and menus. Other user-friendly symbols are used to locate parts and active functions. Below is a list of the icons used as buttons and the symbols featured in the various screens of the interface.

3.1.1 Icons and symbols

Icons are used as physical buttons in the touch-screen display to browse the menus and screens. The featured icons include: “Home” - this icon is pressed to go back to the Home page. The arrow buttons are pressed to move within the given loop; “Info” - this icon gives access to the screens containing information on both the software and the unit; The arrow buttons are pressed to move within the given loop; “On/O󰀨” - this icon gives access to the screen used to switch the unit on or o󰀨 from the user interface; “Cooling/Heating” This icon gives access to the screen where the unit operating mode is switched from cooling to heating using the user interface. “Menu” - pressing of this icon on the Home page gives access to the “Menu” screen. If this icon is pressed on any other screen, the system moves back by one level; “Demand” - this icon gives access to the screens where the various demands from the system are displayed; The arrow buttons are pressed to move within the given loop; “Dampers” This icon gives access to the screens where the operating status of the dampers is displayed. The arrow buttons are pressed to move within the given loop; “Synoptic panel” - this icon gives access to the screen where the layout showing the operating principle of the circuit featured in the unit is displayed. A tap on the circuit components gives access to the relevant information and parameters. A click on this icon gives access to the Alarms menu. If the icon is red, at least one alarm is active; no alarm is active if it is grey. A click on this icon either enables or disables the function it is associated with. A click on this icon enables movement to the left within one screen loop. A click on this icon enables movement to the right within one screen loop.Translation from original instructions Packaged Rooftop

We reserve the right to make changes without any prior notice. UATYA 4P645203-1 This icon appears in the “login” screen after entering the “password”.A click on this icon conrms the entered “password”. This icon appears in the “login” screen and it is accessed with the correct credentials.A click on this icon enables moving back to the “loop” of the previous menu, gaining access to it with the active credentials. Some symbols help easily understand the functions featured in the unit and their status. Symbols include: this symbol is featured in all units and it indicates the ventilation function. When it is grey, the ventilation unit is not operational and it is when the symbol is coloured. this symbol indicates the cooling function. When it is grey, the cooling unit is not operational and it is when the symbol is coloured. this symbol indicates the humidication function. When it is grey, the humidication unit is not operational and it is when the symbol is coloured. this symbol indicates the de-humidication function. When it is grey, the de-humidication unit is not operational and it is when the symbol is coloured. this symbol indicates that access is now active after login to pages containing protected parameters. Access to some parameters requires entry of a password which depends on the prole for which the user is accredited. this symbol indicates the connection with a USB pen drive. The symbol appears when data transmission is in progress. This symbol indicates that the unit is operating in heating mode. The symbol is common for both main and auxiliary sources. If the symbol is orange it means that the main source is working. If the symbol is yellow it means that the auxiliary source is working. If the symbols are gray it means that the sources are not working. This symbol indicates that total fresh air is enabled. This symbol indicates that total air recycling is enabled.Translation from original instructions Packaged Rooftop

We reserve the right to make changes without any prior notice.UATYA4P645203-1 4 THE SCREENS The user interface gives access to all information and setup parameters relating to unit operation. The manual describes the access procedure to the desired information and to the parameter pages where the various functions can be set up.

The user interface gives access to all information and setup parameters relating to unit operation. The manual describes the access procedure to the desired information and to the parameter pages where the various functions can be set up. As explained in the description of icons, the home page gives direct access to the most signicant information and functions. Most parameters and settings are featured in the screen, which are broken down in one main menu and various sub-menus. A tree diagram of the screens is provided below to help the user browse and easily locate the screens of the user interface. - Setpoint * Unit * Ventilation * Humidification Dehumidification * Dampers * Auxiliary heating * Post-heating gas * Environment air renewal- Probes- I/O * Universal inputs * Digital inputs * Driver 1 * Analog outputs * Digital outputs * Driver 2- Language * English * Italian * Swedish * German * French * Spanish * Polish- Alarm history- Charts- Login- Configuration * Date hour * Backlight * Network * HMI * Led * Font- Parameters * ST - Mechanical cooling * STH - Mechanical heating * SFA - Temperature control ventilation * SP - Setup * FA - Supply ventilation * RFA - Return ventilation * PAL - Alarms * CF - Configuration * CO - Compressors * ET - Electronic thermostatic valve * PID - PID parameters * ES - Energy Saving * UN - Unloading * DF - Defrost * HU - Humidity * PD - Pump Down * SD - Dynamic setpoint * DA - Dampers * EFA - External ventilation * CA - Calibration probes * RA - Transducer probe full scale * ENV - Envelope- Files management * Saving timelog.txt * Upload default.conf * Upload alarm.confTranslation from original instructions Packaged Rooftop

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A click on the “Menu” button in the home page gives access to the main menu. The arrow icon buttons featured in the main menu are used to scroll all lower level menus. Access to lower level menus is allowed based on the user’s credentials. Some users have free access, while others have to log in with the prole they are accredited for. Access to the various menus is gained by clicking the colour area containing the menu description. For easier understanding and use, texts are shown to explain the meaning of the values and parameters featured in the screens.Translation from original instructions Packaged Rooftop

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The screen tree helps the operator to browse the menus. Some other suggestions are given to help use the icon buttons to browse the screens. The home page is the starting point. Refer to the chapter titled “Graphic Conventions” for the interpretation and use of the icon buttons. In addition to the “On/O󰀨” icon, the main page features icons such as “Info”, “Demand” and “Synoptic Panel”, which give direct access to information loops. The page also features the “Menu” icon which gives access to the main menu contained in the screen tree. The arrow icon buttons are pressed to scroll screens of the same level, while a click on the “Menu” icon brings back to a higher level. Parameter screens show editable parameters with white wording and view-only parameters with cyan wording. A click on white parameters calls up the relevant edit screen. The parameter value is conrmed when ticked and it is deleted when marked with symbol “x”, in which case the last setpoint is restored. Parameters referred to function enabling/disabling are activated/de-activated by moving the white circle. The status conrmation is visible along the parameter. For easier consultation, many parameters and measured values are featured in multiple screen loops, grouped by uniform functions.

The “Info” icon on the home page gives access to a screen loop containing information on the unit.

The “Demand” icon on the home page gives access to a screen loop containing information on the demand status of the active functions in the unit. The relevant setpoints are visible in the various demand screens.Translation from original instructions Packaged Rooftop

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4.2.3 Synoptic panel

The “Synoptic Panel” icon gives access to the corresponding menu. The synoptic panel is designed to show an overview of the operating status and of the main parameters. Screens vary according to the features of each unit. The “Info” icons in the screens give access to the information and parameters of the corresponding component.Translation from original instructions Packaged Rooftop

We reserve the right to make changes without any prior notice. UATYA 4P645203-1

The user must log in with his own prole in order to access reserved menus and to edit the featured parameters. Below is the login procedure. - Select the access level corresponding to the given credentials. - Click “password” and enter the value corresponding to the given access level, then tick to conrm. - Conrm the password tapping the green arrow icon button on the bottom right-hand side. User "password" is "100" Service "password" is "4321" If the entered password is correct, the padlock opens and the access symbol appears, based on the level. Tap the green arrow icon button on the bottom left-hand side to go back to the main menu. The little man icon with the arrow on the left causes the system to exit the access level. The symbol stays on the top right-hand side of all screens, except for the home page, until access is active. The system exits the login automatically after an idle time shown on the display.Translation from original instructions Packaged Rooftop

We reserve the right to make changes without any prior notice.UATYA4P645203-1 5 SOFTWARE FUNCTIONS

For management of the units, special software is loaded into the controller. The software consists of a combination of functions dedicated to the conditions in which the units may have to work. The following chapters describe all the functions managed by the software, ranging from ordinary functions featured in all units to functions dedicated to specic versions or models. Some of the functions described here may be available only on specic versions or sizes, or according to the selected accessories. In describing the various functions, competence in operation of the units and knowledge of the relevant hydraulic or refrigerant circuits are taken for granted. All the descriptions, settings and parameters given refer to units that are correctly installed as described in the relevant documentation.Translation from original instructionsPackaged Rooftop We reserve the right to make changes without any prior notice.UATYA4P645203-1

5.2 Set point management

The control setpoint mainly depends on parameters “ST1” and “STH1”. The relevant settable minimum and maximum setpoint parameters are shown below. Parameter Min Max UM Description ST1 ST2 ST3 °C Mechanical cooling - Temperature setpoint

Mechanical heating / Auxiliary heating in winter mode - Temperature setpoint Provision has been made for ancillary functions that are designed to either add or subtract an o󰀨set value to/from these setpoints. Any automatic variation of the setpoint must be within the corresponding limits. Parameter “SD2” is used to set the operating mode in which setpoint variation is enabled. There is only one function available and this is the function enabled at the factory.

5.2.1 Dynamic Set Point

The dynamic set point is a function enabled by the manufacturer. The reference parameters in managing the dynamic set point are described below. Parameter Min Max UM Description ST1 ST2 ST3 °C Mechanical cooling - Temperature setpoint

Mechanical heating / Auxiliary heating in winter mode - Temperature setpoint SD2 0 2 - States of the unit in which it is active SD10 0.0 55.0 °C Mechanical cooling - External air temperature - Activation threshold for compensation SD20 0.0 55.0 °C Mechanical heating - External air temperature - Activation threshold for compensationTranslation from original instructionsPackaged Rooftop We reserve the right to make changes without any prior notice.UATYA4P645203-1

5.2.2 Dynamicsetpointfromexternalairprobeincoolingmode

The setpoint value entered in parameter “ST1” is “compensated” against the external air temperature. The parameters concerned are shown in the table. The values of the parameters are representative. In specic cases, di󰀨erent values can be set. Parameter Value UM Description ST1 27.0 °C Mechanical cooling - Temperature setpoint SD2 1 - States of the unit in which it is active SD10 25.0 °C Mechanical cooling - External air temperature - Activation threshold for compensation A graphical representation is shown below. Text °C SD12 > 0 ST1 ST1 - SD12 SD11 SD10 SD12 < 0 ST1 + SD12 Fig. 1 Change in setpoint as the air temperature changes in cooling mode Where“Text”isthevalueoftheexternalairtemperature. When this function is enabled, the setpoint value that the controller uses to manage the air temperature in cooling mode is as follows: - if the external air temperature is lower than the setpoint in parameter “SD10”, the value of the control setpoint is the value stored in parameter “ST1”; - if the external air temperature is higher than the setpoint in parameter “SD10”, plus the value in parameter “SD11”, the value of the control setpoint is given by the sum of the values stored in parameters “ST1” and “SD12”; - if the external air temperature is between the values of parameter “SD10” and the sum of the values stored in parameters “SD10” and “SD11”, the value of the control setpoint varies proportionally between the value stored in parameter “ST1” and the sum of the values stored in parameters “ST1” and “SD12”. Parameter “SD12” can have positive or negative values. When the value is negative, parameter “SD12” has to be subtracted from the value of parameter “ST1”.Translation from original instructionsPackaged Rooftop We reserve the right to make changes without any prior notice.UATYA4P645203-1

5.2.3 Dynamicsetpointfromexternalairprobeinheatingmode

The setpoint value entered in parameter “STH1” is “compensated” against the external air temperature. The parameters concerned are shown in the table. The values of the parameters are representative. In specic cases, di󰀨erent values can be set. Parameter Value UM Description STH1 40 °C Mechanical heating / Auxiliary heating in winter mode - Temperature setpoint SD20 15.0 °C Mechanical heating - External air temperature - Activation threshold for compensation SD21 10.0 °C Mechanical heating - External air temperature - Activation di󰀨erential SD22 5.0 °C Mechanical heating - External air temperature - Max increase / decrease of the setpoint A graphical representation is shown below. Text °C SD22 > 0 STH1

SD21 SD20 SD22 < 0 STH1 + SD22 Fig. 2 Change in setpoint as the air temperature changes in heating mode Where“Text”isthevalueoftheexternalairtemperature. When this function is enabled, the setpoint value that the controller uses to manage the air temperature in heating mode is as follows: - if the external air temperature is higher than the setpoint in parameter “SD20”, the value of the control setpoint is the value stored in parameter “STH1”; - if the external air temperature is lower than the setpoint in parameter “SD20”, minus the value in parameter “SD21”, the value of the control setpoint is given by the sum of the values stored in parameters “STH1” and “SD22”; - if the external air temperature is between the values of parameter “SD20” and the di󰀨erence of the values stored in parameters “SD20” and “SD21”, the value of the control setpoint varies proportionally between the value stored in parameter “STH1” and the sum of the values stored in parameters “STH1” and “SD22”. Parameter “SD22” can have positive or negative values. When the value is negative, parameter “SD22” has to be subtracted from the value of parameter “STH1”.Translation from original instructionsPackaged Rooftop We reserve the right to make changes without any prior notice.UATYA4P645203-1

5.3 Temperature control

Cooling and heating devices are controlled according to the temperature value measured by a reference probe. The proportional band identies the control range of the air conditioner system and it can be set up with independent values for heating and cooling mode. The dead zone identies the range around the setpoint within which the devices are not enabled (it is used to prevent oscillations in the setup value). The diagram below shows the behaviour of heating and cooling devices. STH6STH4

STH1 SdR °C STH5 ST5 ST6 ST4 ST1 Fig. 3 Graphical representation of temperature control devices Parameter Min Max UM Description ST1 ST2 ST3 °C Mechanical cooling - Temperature setpoint ST4 0.0 25.0 °C Proportional control - Cooling - Activation di󰀨erential ST5 0.0 25.0 °C Proportional control - Cooling - Neutral activation area ST6 0.0 25.0 °C Proportional control - Cooling - O󰀨set ST9 0 7 - Control probe ST11 0 2 - Type of temperature control PID70 0 10000 - Mechanical cooling - Kp PID71 0 10000 - Mechanical cooling - Ki PID72 0 10000 - Mechanical cooling - Kd PID76 0.0 25.0 °C Mechanical cooling - Dead band PID78 0 2 - Mechanical cooling - Dead band position STH1 10.0 35.0 °C Mechanical heating / Auxiliary heating in winter mode - Temperature setpoint STH4 0.0 25.0 °C Mechanical heating - Proportional - Activation di󰀨erential STH5 0.0 25.0 °C Mechanical heating - Proportional - Activation neutral zone STH6 0.0 25.0 °C Mechanical heating - Proportional - O󰀨setTranslation from original instructionsPackaged Rooftop We reserve the right to make changes without any prior notice.UATYA4P645203-1 The values set in parameters “ST9” for cooling and “STH9” for heating determine the control probe type, as follows: - 0 = temperature probe on air delivery line; - 1 = temperature probe on air return line; The values set in parameters “ST11” for cooling and “STH11” for heating determine the type of temperature control, as follows: - 0 = proportional. - 1 = "Cascade"; - 2 = PID.

5.3.1 Thermoregulation in cooling mode

The thermoregulation of the unit depends on parameter “ST9”, which identies the reference probe for the temperature setpoint (parameter “ST1”), and on parameter “ST11” which determines the type of temperature/humidity control. In proportional control mode, the controller activates the available resources as the value read by the reference probe increases in comparison to the setpoint value. When “Cascade” temperature/humidity control is selected, the controller uses it to enable the resources and at the same time monitor the air temperature in the delivery line. In PID control mode, the controller activates the available resources as the demand increases. The controller calculates the demand and checks the value measured by the probe against the setpoint value and according to its variation over time using the parameters set in the PID. Proportional temperature control If parameter “ST11” is set to “0”, proportional control is enabled. The parameters involved in proportional temperature control are shown in the table. The values of the parameters are representative. In specic cases, di󰀨erent values can be set. Parameter Value UM Description ST1 24.0 °C Temperature setpoint ST4 2.0 °C Proportional control - Cooling - Activation di󰀨erential ST5 0.1 °C Proportional control - Cooling - Neutral activation area ST6 0.1 °C Proportional control - Cooling - O󰀨set A graphical representation is shown below. ST5 ST6 ST4

ST1 SdR °C Fig. 4 Graphical representation of cooling demand In addition to the parameters listed in the table, the abbreviations in the graph are: - SdR = reference probe; - % = percentage demand value.Translation from original instructionsPackaged Rooftop We reserve the right to make changes without any prior notice.UATYA4P645203-1 “cascade”temperaturecontrol. If parameter “ST11” is set to “1”, “Cascade” control is enabled. This function fulls the system demand and keeps the air temperature in the delivery line within comfort values. For this purpose, a virtual setpoint is calculated from the stored setpoint, as corrected with the air temperature in the return line. The setpoint is corrected dynamically as the air temperature changes in the delivery line. The parameters involved in cascade temperature control are shown in the table. The values of the parameters are representative. In specic cases, di󰀨erent values can be set. Parameter Value UM Description ST42 24.0 °C Cascade control - Unit setpoint ST43 0.5 °C Mechanical cooling - Cascade control - Mode switching o󰀨set ST44 4.0 °C Mechanical cooling - Cascade control - Operating di󰀨erential ST45 15.0 °C Mechanical cooling - Cascade control - Min. delivery setpoint The graph below illustrates cascade control. Spd °C ST45 ST43 Tra °C ST44 ST42 ST42 AOC Fig. 5 Change of air delivery setpoint with “cascade” control in cooling mode In addition to the parameters listed in the table, the abbreviations in the graph are: - Spd = air setpoint in delivery line; - Tra = air temperature in return line; - AOC = automatic mode switching.Translation from original instructionsPackaged Rooftop We reserve the right to make changes without any prior notice.UATYA4P645203-1

5.3.2 Thermoregulation in heating mode

The thermoregulation of the unit in heating mode depends on parameter “STH9”, which identies the reference probe for the temperature value in the setpoint (parameter “STH1”), and on parameter “STH11” which determines the type of temperature control. In proportional control mode, the controller activates the available resources as the value read by the reference probe decreases in comparison to the setpoint value. When “Cascade” control is selected, the controller enables the resources and at the same time monitors the air temperature in the delivery line. In PID control mode, the controller activates the available resources as the demand increases. The controller calculates the demand and checks the value measured by the probe against the setpoint value and according to its variation over time using the parameters set in the PID. Proportional temperature control If parameter “STH11” is set to “0”, proportional control is enabled. The parameters involved are shown in the table. The values of the parameters are representative. In specic cases, di󰀨erent values can be set. Parameter Value UM Description STH1 20.0 °C Mechanical heating / Auxiliary heating in winter mode - Temperature setpoint STH4 2.0 °C Mechanical heating - Proportional - Activation di󰀨erential STH5 0.0 °C Mechanical heating - Proportional - Activation neutral zone STH6 0.0 °C Mechanical heating - Proportional - O󰀨set A graphical representation is shown below.

STH1 SdR °C Fig. 6 Graphical representation of stepped heating demand In addition to the parameters listed in the table, the abbreviations in the graph are: - SdR = reference probe; - % = percentage demand value.Translation from original instructionsPackaged Rooftop We reserve the right to make changes without any prior notice.UATYA4P645203-1 Temperature monitoring with Cascade control If parameter “ST11” is set to “1”, “Cascade” control is enabled. This function fulls the system demand and keeps the air temperature in the delivery line within comfort values. For this purpose, a virtual setpoint is calculated from the stored setpoint, as corrected with the air temperature in the return line. The setpoint is corrected dynamically as the air temperature changes in the delivery line. The parameters involved in cascade temperature control are shown in the table. The values of the parameters are representative. In specic cases, di󰀨erent values can be set. Parameter Value UM Description ST42 24.0 °C Cascade control - Unit setpoint STH46 0.5 °C Mechanical heating - Cascade control - Mode switching o󰀨set STH47 4.0 °C Mechanical heating - Cascade control - Operating di󰀨erential STH49 30.0 °C Mechanical heating - Cascade control - Max. air setpoint in delivery line The graph below illustrates cascade control. Spd °C STH49 STH46 Tra °C STH47 ST42 ST42 AOC Fig. 7 Change of air setpoint in delivery line with “cascade” control in heating mode In addition to the parameters listed in the table, the abbreviations in the graph are: - Spd = air setpoint in delivery line; - Tra = air temperature in return line; - AOC = automatic mode switching. If the air temperature in the return line is lower than the di󰀨erence between the setpoints in parameters “ST42” - “STH46”, the value of the air setpoint in the delivery line is increased gradually from the value in parameter “ST42” to the value in parameter “STH49”, within the di󰀨erential set in parameter “STH47”.Translation from original instructions Packaged Rooftop

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5.3.3 Disablingheatingsourcesdependingonexternalairtemperature

The value of the external air temperature is used as reference to disable the heating sources in the unit. The heating sources are disabled when the temperature is either high or low. The parameters involved are shown in the table. The values of the parameters are representative. In specic cases, di󰀨erent values can be set. Parameter Value UM Description STH14 -20.0 °C Mechanical heating - Deactivation threshold for low external air temperature STH15 30.0 °C Mechanical heating - Deactivation threshold for high external air temperature STH123 -30.0 °C Auxiliary heating - Deactivation threshold for low external air temperature STH124 50.0 °C Auxiliary heating - Deactivation threshold for high external air temperature Heating generated using the refrigerant circuit is disabled when: - the external air temperature is low - it drops below the setpoint in parameter “STH14”; heating is enabled again when the temperature value rises above the setpoint in parameter “STH14”, plus +1°C; - the external air temperature is high - it rises above the setpoint in parameter “STH15”; heating is enabled again when the temperature value drops below the setpoint in parameter “STH15”, minus +1°C. Auxiliary heating is disabled when: - the external air temperature is low - it drops below the setpoint in parameter “STH123”.Auxiliary heating is enabled again when the temperature value rises above the setpoint in parameter “STH123”, plus +1°C; - the external air temperature is high - it rises above the setpoint in parameter “STH124”. Auxiliary heating is enabled again when the temperature value drops below the setpoint in parameter “STH124”, minus +1°C.Translation from original instructionsPackaged Rooftop We reserve the right to make changes without any prior notice.UATYA4P645203-1

5.4 humidity control

Humidity control devices are managed according to the value measured by the reference probe. The measured value is compared with the desired value (setpoint), after which the system calculates the di󰀨erence between these values and then enables the most suitable devices based on this di󰀨erence. The proportional band identies the control range of the air conditioner system and it is set up with the same values for both humidication and de-humidication. The dead zone identies the range around the setpoint within which the devices are not enabled (it is used to prevent oscillations in the setup value). The diagram below shows the behaviour of humidication and de-humidication devices. HU4/HU9

5.4.1 Relative humidity control with proportional control

If parameter “HU11” is set to “0”, humidity control is performed according to the relative humidity value. Relative humidity is managed according to parameter “HU14”, which identies the probe on which the controller must guarantee maintenance of the entered setpoint, and on parameter “HU12” that determines the type of humidity control. The parameters involved are shown in the table. The values of the parameters are representative. In specic cases, di󰀨erent values can be set. Parameter Value UM Description HU4 5.0 % Relative humidity control di󰀨erential HU5 0.5 % Relative humidity control neutral area A graphical representation is shown below. HU4

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The controller can manage air humidication using a built-in humidier in the unit. The controller is set up at the factory with all the parameters required to control the installed humidier.

5.5.1 Ancillarybuilt-inhumidierfunctions

Humidier control includes some ancillary functions, a description of which is given below.

5.5.1.1 Manual water drain

The manual water drain function is designed to fully empty the cylinder in the humidier. This function is enabled only through the web page. Access to this page requires the operator to log in with a Service level password. If the humidier is producing steam, enabling of the function causes steam production to be stopped instantly.

The pre-washing function is used to wash the water lines and the humidier cylinder. The cylinder is lled and then emptied 3 times in order to wash away impurities from the pipes and cylinder, if any. We recommend enabling this function especially after connecting the water lines or after cylinder replacement. This function is enabled only through the web page. Access to this page requires the operator to log in with a Service level password. If the humidier is producing steam, enabling of the function causes steam production to be stopped instantly.

5.5.1.3 Water drainage before machine shutdown

The function for water drainage before a machine shutdown is enabled in order to avoid water stagnation in the humidier cylinder, which may lead to the formation of algae or bacteria (e.g. Legionella), if the cylinder is lled with water for over 72 consecutive hours without producing steam. The cylinder is drained and remains as such until it receives a signal requesting the production of steam. The function is always active and the shutdown interval is xed.

5.6 Airdehumidication

Air dehumidication is required during the cooling cycle, where it occurs naturally. If dehumidication is required simultaneously with cooling, the controller starts the compressors, based on which of the two demands is greater. The possibility exists that the temperature setpoint is reached before the humidity setpoint is achieved. If this is the case, the controller pushes cooling even further so as to cause the temperature to drop below the setpoint. However, to prevent an excessive drop of the air temperature in the room, the controller uses the heating devices tted in the unit to post-heat the air.Translation from original instructions Packaged Rooftop

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5.7 Power supply control

Units may be supplied with devices for protection against incorrect connections of the phase sequence or voltage variations outside the required limits during operation. Protections consist in relays which output an alarm signal to one digital input in the controller through an electric contact (the digital input concerned is shown in the wiring diagram). The unit can be tted with one relay to monitor correct phase sequence or one relay to monitor the power voltage or one relay to manage both these functions.

5.7.1 Phase sequence

A dedicated relay is tted to manage incorrect connection of the phase sequence to the unit. If the phase sequence is connected incorrectly, the relay opens an electric contact that triggers alarm “AL55” on the controller display. Incorrect connection of the phase sequence may be experienced upon unit installation or when work is performed on the power supply line. Power must be cut out to the unit to make the connection correctly. The alarm is cleared as soon as the unit is switched on again.

5.7.2 Min./Max.voltage

The controller is designed to manage potential conditions where the variation of the power voltage to the unit experiences a signicant deviation from the expected values.

Activation of the “Fast Restart” function, provided that an “ultracap” is tted to keep the controller electrically powered, is designed to minimise as much as possible the delay experienced in restarting the compressors tted in the unit. This is possible because the controller starts counting the minimum time to OFF as soon as a switch-o󰀨 is started due to a blackout. The controller detects problems with the main power supply through a digital input and manages them as alarms. To protect the integrity of the compressors, the controller manages the maximum number of starts per hour by means of the delay between two consecutive starts. Quick restart after a blackout depends on the thermoregulation demand. It requires a demand for cooling or dehumidication and the o󰀨-set for the activation of at least one compressor. The “Fast Restart” function does not jeopardise the conditions of the compressors as it limits the number of quick starts over the space of an hour or a day.Translation from original instructions Packaged Rooftop

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5.8 Damper management

In addition to air change in the room, the controller can also manage other functions connected to comfort enhancement and system economy. The functions the controller can handle vary according to the number of dampers tted in the unit: - units with 2 dampers, for fresh air only; - units with 3 dampers, when free cooling / free heating is featured; - units with 4 dampers, when a heat recovery system is tted in addition to free cooling / free heating. Dampers can be set either linearly or proportionally. Units with two dampers The dampers featured in 2-damper units include: a damper for fresh external air and a damper for recirculated air. Normally, their operation is complementary, i.e. the percentage opening of the external air damper is equal to the percentage closing of the recycled air damper. Units with three dampers The dampers featured in 3-damper units include: a damper for fresh air, a damper for exhaust air and a damper for recirculated air. Normally, the external air damper opens at the same percentage as the exhaust air damper and the recycled air damper is complementary to the other two. So, the percentage opening of the external air damper and the exhaust air damper is equal to the percentage closing of the recycled air damper. Units with four dampers Units with four dampers feature the same dampers as 3-damper units plus one. The fourth damper is used for external air. It is used to cause the external air to ow through the heat recovery system, when heat recovery is enabled, and it is closed in free cooling mode. If the heat recovery system is not sized to provide for a 100% air ow in the unit, a fth damper is actually tted. This is an extra exhaust damper that is used by the unit in free cooling mode to bypass the heat recovery system. The parameters involved are shown in the table. Parameter Min Max UM Description DA43 0.0 50.0 °C External air - Opening reduction for external air temperature - Summer temperature threshold DA44 -20.0 16.0 °C External air - Opening reduction for external air temperature - Winter temperature threshold DA45 0 100 % External air - Opening reduction for external air temperature - Min opening DA52 0 3 - External air - Start up - Conguration DA54 0 999 min External air - Start up - Wash durationTranslation from original instructions Packaged Rooftop

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5.8.1 Damper control

The controller can control the dampers in two di󰀨erent ways: “standard” and “adaptive”. When dampers are required to stay in a xed position, for instance to provide for the correct ow of fresh air, system conditions may exist in which the damper signal cannot guarantee the desired air percentage.

5.8.1.1 Standard control

Standard control requires that the dampers stay in their position irrespective of the actual fresh air percentage.

5.8.1.2 Adaptive control

Adaptive control corrects damper opening based on the necessary fresh air percentage. This control requires that the mixed air probe is tted. The controller uses the values of the air temperature in the return line, the external air temperature and the corresponding damper opening percentage to calculate the theoretical value of mixed air. The controller compares the calculated mixed air value with the value actually measured and then uses a PID to correct the damper signal until the di󰀨erence is cancelled.

5.8.2 Damper management

The controller can manage damper control either linearly or proportionally. Linear control enables opening of the damper with a tilt angle that is equal to the required opening percentage. Proportional control is designed to open the dampers so that the air can ow, i.e. at the required percentage of the max. possible opening. All units featuring dampers are set by default to run a proportional control.

When the unit is started up, specic damper adjustments may be required for some management functions. If no washing or recycling cycle is to be run at unit start-up, the controller opens the dampers at the percentage value set for air changing, irrespective of their number.

Washing means changing the air in the room and it consists in exhausting all the air in the return line and only letting external air ow into the room. If washing is required at unit start-up, parameter “DA52” must be set to “1”. While the washing cycle is in progress, the controller keeps the exhaust air and external air dampers open at their max. opening percentage and it keeps the recycled air damper in closed position for the time setpoint in parameter “DA54”. If the value in parameter “DA53” is set to “0”, the washing cycle takes place without any thermoregulation of the air. If the value in parameter “DA53” is set to “1”, thermoregulation is active. If the washing cycle is run with thermoregulation active, the position of the dampers may be a󰀨ected by conditions resulting from compressor operation. While the washing cycle is in progress, a button ashes on the main screen: it is pressed to stop the cycle manually before the time set in parameter “DA54” elapses.Translation from original instructions Packaged Rooftop

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Full air recycling at system start-up or after a washing cycle is intended to achieve the temperature and humidity setpoints more quickly. If air recycling only is required at unit start-up, parameter “DA52” must be set to “2”. If parameter “DA52” is set to “3”, a washing cycle is performed before recycling. While recycling is in progress, the controller keeps the exhaust air and external air dampers closed and it keeps the recycled air damper open for the time setpoint stored in parameter “DA55”. If the value in parameter “DA53” is set to “0”, the washing cycle takes place without any thermoregulation of the air. If the value in parameter “DA53” is set to “1”, thermoregulation is active. While recycling is in progress, a button ashes on the main screen which is pressed to stop the cycle manually before the time set in parameter “DA55” elapses.Translation from original instructions Packaged Rooftop

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5.9 Auxiliaryheating

In addition to the heating e󰀨ect achieved using the refrigerant circuit, the controller can handle other sources of heating such as electric heaters and a hot water coil with an OK signal to a boiler or a burner. The logic featured in the controller is set up at the factory, based on the unit conguration. The function to enable heating and the operating logics can be customised. The parameters concerned are shown in the table. Parameter Min Max UM Description STH57 0 1 - Auxiliary heating - Summer oper. - Type of temperature control STH58 10.0 35.0 °C Auxiliary heating - Summer oper. - Setpoint STH59 0.0 25.0 °C Auxiliary heating - Summer oper. - Proportional - Temperature o󰀨set STH60 0.0 25.0 °C Auxiliary heating - Summer oper. - Proportional - Activation di󰀨erential STH61 0 100 % Auxiliary heating - Summer oper. - Proportional - Minimum request STH62 0 100 % Auxiliary heating - Summer oper. - Proportional - Maximum request STH91 0 1 - Auxiliary heating - Winter oper. - Type of temperature control STH93 0.0 25.0 °C Auxiliary heating - Winter oper. - Proportional - Temperature o󰀨set STH94 0.0 25.0 °C Auxiliary heating - Winter oper. - Proportional - Activation di󰀨erential STH95 0 100 % Auxiliary heating - Winter oper. - Proportional - Minimum request STH96 0 100 % Auxiliary heating - Winter oper. - Proportional - Maximum requestTranslation from original instructions Packaged Rooftop

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5.9.1 Controlled devices

The controller controls the devices installed in the unit, which may include: - electrical heaters, divided by either one or two power steps; - a hot water coil, with an analogue signal to control opening of a valve and a digital OK signal to control a pump that gets started as soon as the valve opens. This management logic includes the anti-freeze function; - a boiler that is controlled by an analogue signal and a digital OK signal which gets enabled as soon as an analogue demand is received. This management logic includes a digital input through which the controller receives alarms from the boiler, if any, as well as an anti-freeze function; - a burner that is controlled by an analogue signal and a digital OK signal which gets enabled as soon as an analogue demand is received. This management logic includes a digital input through which the controller receives alarms from the burner, if any. Parameter “STH55” is used to enable auxiliary heating for: - summer operation only, in which case it serves as post heating during the dehumidication cycle; - winter operation only, in which case it serves either as single source, if the refrigerant circuit does not feature cycle reversal, or as an integration to heating where the latter is implemented by the refrigerant circuit; - both summer and winter operation. Anti-freeze function The anti-freeze function, which is included in versions featuring a hot water coil and a boiler, is enabled when the unit is in operation, no heating demand is present and the external air temperature is lower than the setpoint in parameter “STH136”. In versions with a hot water coil, when the anti-freeze function gets enabled, the controller opens the relevant control valve at the value set in parameter “STH137” and it enables the circulation pump. In versions with a boiler, when the anti-freeze function gets enabled, the controller outputs to the boiler the demand signal as set in parameter “STH137” and an OK signal for activation.

When the value in parameter “STH55” is “1”, auxiliary heating is congured for summer operation only and serves as post heating during dehumidication. The control can either be proportional or PID, depending on the value set in parameter “STH57”. The value in parameter “STH56” identies the probe taken as reference for the control which is performed according to parameter “STH58”.Translation from original instructions Packaged Rooftop

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5.9.3 Activation according to time bands

The unit may be managed automatically according to time bands. The time band management logic is designed to stop the unit, to edit the setpoint and to switch among operating modes. The parameters concerned are shown in the table. Parameter Min Max UM Description ES1 0 144 h Time band 1 - Start ES2 0 144 h Time band 1 - End ES3 0 144 h Time band 2 - Start ES4 0 144 h Time band 2 - End ES5 0 144 h Time band 3 - Start ES6 0 144 h Time band 3 - End ES7 0 15 - Setpoint variation - Monday ES8 0 15 - Setpoint variation - Tuesday ES9 0 15 - Setpoint variation - Wednesday ES10 0 15 - Setpoint variation - Thursday ES11 0 15 - Setpoint variation - Friday ES12 0 15 - Setpoint variation - Saturday ES13 0 15 - Setpoint variation - Sunday ES14 -25.0 25.0 °C Setpoint variation - Mechanical cooling - O󰀨set ES16 -25.0 25.0 °C Setpoint variation - Mechanical heating - O󰀨set ES18 0 15 - Unit switch-o󰀨 - Monday ES19 0 15 - Unit switch-o󰀨 - Tuesday ES20 0 15 - Unit switch-o󰀨 - Wednesday ES21 0 15 - Unit switch-o󰀨 - Thursday ES22 0 15 - Unit switch-o󰀨 - Friday ES23 0 15 - Unit switch-o󰀨 - Saturday ES24 0 15 - Unit switch-o󰀨 - Sunday ES26 0 144 h Time band 4 - Start ES27 0 144 h Time band 4 - End ES31 0 15 - Heating mode activation - Monday ES32 0 15 - Heating mode activation - Tuesday ES33 0 15 - Heating mode activation - Wednesday ES34 0 15 - Heating mode activation - Thursday ES35 0 15 - Heating mode activation - Friday ES36 0 15 - Heating mode activation - Saturday ES37 0 15 - Heating mode activation - Sunday The pairs of start and end parameters are used to set as many as 4 time bands. Each day of the week can be matched with a combination of the set time bands in order to edit the setpoint, switch the unit o󰀨 and switch between operating modes. The setpoint is edited within the selected time band by way of applying an o󰀨set to the active operating value. The active operating value is given by the value set in the relevant parameter and external o󰀨sets, if any. The o󰀨set value can be either positive or negative. When it is positive, it is added; when it is negative, it is subtracted. Two o󰀨set values can be set: one for operation in cooling mode and one in heating mode. If the controller manages auxiliary heating, the setpoint in parameter “STH58” is maintained when the time bands are activated in cooling mode; when they are activated in heating mode, the setpoint varies according to the o󰀨set value.Translation from original instructions Packaged Rooftop

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The controller is programmed to manage the components of the unit safely, by adjusting their operation as conditions change with the aim of maintaining uninterrupted service. Within the scope of this control function, the controller will partially or completely limit operation of the unit when hazardous conditions are approaching. A click on this icon gives access to the Alarms menu. If the icon is red, at least one alarm is active; no alarm is active if it is grey. The codes with their descriptions for the various conditions that can appear in the alarm menu are given in the next chapter. If you notice there are error messages with the unit running and with it stopped, you should promptly inform the customer support centre and given them the code and the message description and wait for their instructions. Do not take initiatives before consulting the customer support centre.

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