Daikin R-32 rooftop Series User manual

Operation manual
Rooftop Packaged Unit
R-32 rooftop series – Base,
2-,3- and 4-damper versions
Made-To-Stock models
UATYA-BBY1
UATYA-BBC2Y1
UATYA-BBC3Y1
Made-To-Order models
BASE
FC2
FC3
RS4
Operation manual
Rooftop Packaged Unit English

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Contents
1 Introduction 5
1.1 General 5
1.1.1 c.pCO controller functions 5
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 Change language 8
2.6 Changing the date and time 8
2.7 Setting of time bands 9
3 Graphics on the display 10
3.1 Graphic conventions 10
3.1.1 Icons and symbols 10
4 The screens 12
4.1 Screen tree 12
4.1.1 Screen menu 13
4.2 Menu browsing 14
4.2.1 Info 14
4.2.2 Demand 14
4.2.3 Synoptic panel 15
4.2.4 Login 16
5 Software functions 17
5.1 Introduction 17
5.2 Set point management 18
5.2.1 Dynamic Set Point 18
5.2.2 Dynamic setpoint from external air probe in cooling mode 19
5.2.3 Dynamic setpoint from external air probe in heating mode 20
5.3 Temperature control 21
5.3.1 Thermoregulation in cooling mode 22
5.3.2 Thermoregulation in heating mode 24
5.3.3 Disabling heating sources depending on external air temperature 26
5.4 humidity control 27
5.4.1 Relative humidity control with proportional control 28
5.5 Air humidication 29

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5.5.1 Ancillary built-in humidier functions 29
5.6 Air dehumidication 29
5.7 Power supply control 30
5.7.1 Phase sequence 30
5.7.2 Min. / Max. voltage 30
5.7.3 Fast Restart 30
5.8 Damper management 31
5.8.1 Damper control 32
5.8.2 Damper management 32
5.8.3 Unit start-up 32
5.8.4 Washing 32
5.8.5 Recycling 33
5.9 Auxiliary heating 34
5.9.1 Controlled devices 35
5.9.2 Post heating 35
5.9.3 Activation according to time bands 36
5.1 Introduction 37
5.2 Alarm table 37

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1 INTRODUCTION
1.1 General
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 conguration, this gives the possibility of managing a wide range of units with relevant specic
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.

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2 QUICK COMMISSIONING
2.1 Main functions
The necessary instructions for working on the controller, with regard to the main functions of the unit, are given below.
2.2 Switchingtheunitonando󰀨
2.2.1 Switchtheunitonando󰀨fromthedisplay.
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 “running” to “o󰀨” and vice versa.
2.2.2 Switchtheunitonando󰀨fromexternalOKsignal
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 Switchtheunitonando󰀨fromtheBMS
In order to switch the unit on and o󰀨 from the BMS, make sure the feature is active.
See dedicated BMS management document.

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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 conrm.
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.
2.4 Change language
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.

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2.5 Change language
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.
2.6 Changing the date and time
Scroll the main menu until you nd the “Congurations” group and select it.
Select “Date and Time” in the “Congurations” 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 conrm 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.

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2.7 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.

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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;
“Cold/Heat” 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.

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This icon appears in the “login” screen after entering the “password”.A click on this icon conrms 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 heating function. When it is grey, the heating unit is not operational and it is when
the symbol is coloured.
this symbol indicates the humidication function. When it is grey, the humidication unit is not operational and
it is when the symbol is coloured.
this symbol indicates the de-humidication function. When it is grey, the de-humidication 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 prole 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. If the symbol is cyan, the unit is operating in
cooling mode.
This symbol indicates that total air change is enabled.
This symbol indicates that total air recycling is enabled.

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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.
4.1 Screen tree
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 signicant 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
* Ventilazion
* Humidification Dehumidification
* Dampers
* Auxiliary heating
* Post hot 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
* Loading .conf files

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4.1.1 Screen menu
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 prole 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.

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4.2 Menu browsing
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 conrmed 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
conrmation is visible along the parameter.
For easier consultation, many parameters and measured values are featured in multiple screen loops, grouped by
uniform functions.
4.2.1 Info
The “Info” icon on the home page gives access to a screen loop containing information on the unit.
4.2.2 Demand
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.

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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.

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4.2.4 Login
The user must log in with his own prole 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 conrm.
- Conrm 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.

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5 SOFTWARE FUNCTIONS
5.1 Introduction
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 specic versions or models.
Some of the functions described here may be available only on specic 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.

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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
STH1 STH2 STH3 °C 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
STH1 STH2 STH3 °C 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 compensation

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5.2.2 Dynamicsetpointfromexternalairprobeincoolingmode
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 specic 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”isthevalueoftheexternalairtemperature.
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”.

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5.2.3 Dynamicsetpointfromexternalairprobeinheatingmode
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 specic 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
STH1 - SD22
SD21
SD20
SD22 < 0
STH1 + SD22
Fig. 2 Change in setpoint as the air temperature changes in heating mode
Where“Text”isthevalueoftheexternalairtemperature.
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”.