Daikin UATYA-B Manuale utente

Operaon manual

Daikin R32 Rooops UATYA-B

ESIE21-02

Service manual Daikin R32 Rooops UATYA-B

ESIE21-02 – 2021.03

Disclaimer

The present publication is drawn up by way of information only and does not constitute an o󰀨er binding upon Daikin Europe

N.V.. Daikin Europe N.V. has compiled the content of this publication to the best of its knowledge. No express or implied

warranty is given for the completeness, accuracy, reliability or tness for particular purpose of its content and the products

and services presented therein. Specications are subject to change without prior notice. Daikin Europe N.V. explicitly

rejects any liability for any direct or indirect damage, in the broadest sense, arising from or related to the use and/or inter-

pretation of this publication. All content is copyrighted by Daikinv Europe N.V.

Service manualDaikin R32 Rooops UATYA-B

ESIE21-02 – 2021.03

Version log

Version code Description Date

ESIE21-02 Document release March 2021

Service manual Daikin R32 Rooops UATYA-B

ESIE21-02 – 2021.03

Page intentionally blank

Service manualDaikin R32 Rooops UATYA-B

ESIE21-02 – 2021.03

Contents

1 Introduction 9

1.1 General 9

1.1.1 c.pCO controller functions 9

2 The screens 10

2.1 Screen tree 10

2.1.1 Screen menu 11

3 Software functions 12

3.1 Introduction 12

3.2 Set point management 13

3.2.1 Dynamic Set Point 13

3.2.2 Dynamic setpoint from external air probe in cooling mode 14

3.2.3 Dynamic setpoint from external air probe in heating mode 15

3.3 Temperature control 16

3.3.1 Thermoregulation in cooling mode 17

3.3.2 Thermoregulation in heating mode 20

3.3.3 Disabling heating sources depending on external air temperature 22

3.3.4 Pre-heating coil 23

3.4 humidity control 24

3.4.1 Relative humidity control with proportional control 25

3.4.2 Relative humidity control with PID control 26

3.4.3 Absolute humidity control with proportional control 26

3.4.4 Absolute humidity control with PID control 27

3.5 Air humidication 28

3.5.1 Ancillarybuilt-inhumidierfunctions 28

3.6 Air dehumidication 29

3.6.1 Coolinglimitationindehumidicationcycle 29

3.7 Priority between temperature and humidity control 30

3.8 Tips for PID controller setup 31

3.9 Room ventilation 32

3.9.1 Ventilation in delivery line 32

3.9.2 Constantowventilationcontrol 33

3.9.3 Variableowventilationcontrol 34

3.9.4 Ventilation control at constant pressure 36

3.9.5 Ventilationcontrolwithconstantpressuredierence 35

3.9.6 Min. and max. temperature limitation in delivery line 39

3.9.7 Special conditions 40

3.9.8 Ventilation in return line 41

3.9.9 Constantowventilationcontrol 42

3.9.10 Ventilation control at constant pressure 43

3.9.11 Ventilationcontrolwithconstantpressuredierence 44

3.9.12 Ventilation control based on a percentage of the delivery value 46

3.9.13 Special conditions 46

Contents

Service manual Daikin R32 Rooops UATYA-B

ESIE21-02 – 2021.03

3.10 Power supply control 47

3.10.1 Phase sequence 47

3.10.2 Min. / Max. voltage 47

3.10.3 Fast Restart 47

3.11 Circuits and compressors 49

3.11.1 Starting and stopping of the compressors 49

3.11.2 Management of compressor with inverter 50

3.11.3 Capacity reduction override 52

3.12 Circuits and compressors - Functions 55

3.12.1 Oil return for compressors managed with inverter 55

3.13 Damper management 56

3.13.1 Damper control 58

3.13.2 Damper management 58

3.13.3 Unit start-up 58

3.13.4 Washing 58

3.13.5 Recirculation 59

3.13.6 Free cooling 59

3.13.7 Free heating 61

3.13.8 Enthalpy-based free cooling and free heating 63

3.13.9 Air change in the room 64

3.13.10 Co2control 64

3.13.11 VOC control 65

3.14 Limitation of damper operation 66

3.14.1 Limitation based on condensing pressure in heating mode 66

3.14.2 Limitation based on evaporating pressure in cooling mode 68

3.14.3 Limitation based on evaporating pressure in heating mode 68

3.14.4 Limitation based on condensing pressure in heating mode 69

3.14.5 Min. opening in relation to external air temperature 70

3.14.6 Min.openinginconnectionwithdehumidication 70

3.14.7 Management of external air damper during defrosting 70

3.15 Source-side ventilation 71

3.15.1 Condensation control 71

3.15.2 Night Shift System function 73

3.15.3 Evaporation control 74

3.16 Auxiliary heating 76

3.16.1 Controlled devices 77

3.16.2 Post heating 78

3.16.3 Single source for winter heating 78

3.16.4 Auxiliary heating and heating by refrigerant circuit 76

3.16.5 Auxiliary heating in both winter and summer operation 78

3.17 Defrosting 79

3.17.1 Simultaneous or separate defrost 80

3.17.2 Checkofconditionsforthedefrostcycleatxedevaporatingtemperature 80

3.17.3 Preparation for cycle reversal 80

3.17.4 Refrigeration cycle reversal and defrost 81

3.17.5 Forcing of a defrost cycle 81

3.17.6 Management of auxiliary heating during defrost cycle 82

3.17.7 Special management logics during defrosting 82

3.18 Other functions 83

Contents

Service manualDaikin R32 Rooops UATYA-B

ESIE21-02 – 2021.03

3.18.1 Management of control probe error 83

3.18.2 Heater in condensate drip tray 83

3.18.3 "Leak detector" management 83

3.18.4 Management of operating mode switching 85

3.18.5 Automatic mode switching 85

3.18.6 Flow rate reduction upon achievement of temperature setpoint 86

3.18.7 Activation according to time bands 87

3.19 Enabled functions 88

3.19.1 Option management 88

4 Alarms 89

4.1 Introduction 89

4.1.1 Automatic/Manual procedure and alarm reset 89

4.1.2 File “alarm.conf” 90

4.2 Unit alarms 91

4.2.1 Airowalarm 91

4.2.2 Dirtyltersalarm 91

4.2.3 Humidity alarm 92

4.2.4 Return temperature alarm 93

4.2.5 Delivery temperature alarm 94

4.2.6 Low external air temperature alarm 95

4.2.7 Thermal overload switch alarm in ventilation unit 96

4.2.8 Power supply alarm 97

4.2.9 Ventilation unit maintenance alarm 98

4.2.10 EEprom error alarm 98

4.2.11 Alarm: access error to internal memory 99

4.2.12 Internal memory error alarm 99

4.2.13 External alarm 100

4.2.14 c.pCOe communication error alarm 100

4.3 Function alarms 101

4.3.1 Fire/smoke alarm 101

4.3.2 Electronic valve driver alarm 102

4.3.3 Humidieralarms 102

4.3.4 Heater alarms 103

4.3.5 Defrost cycle ended due to max. time achieved 104

4.3.6 “Leak detector” alarms 104

4.3.7 General boiler and burner alarms 105

4.4 Circuit alarms 106

4.4.1 High-pressure alarms 106

4.4.2 Low pressure alarms 106

4.4.3 High discharge gas temperature alarm 108

4.4.4 Alarmforlowdierencebetweenhighandlowpressure 109

4.4.5 Low superheating alarm 109

4.5 Compressor alarms 110

4.5.1 Compressor maintenance alarm 110

4.5.2 Alarm for compressor operation outside envelope 110

4.5.3 Compressor inverter alarm 111

4.5.4 Compressor thermal overload switch alarms 111

4.6 Probe error alarms 112

4.6.1 Temperature probes 112

Contents

Service manual Daikin R32 Rooops UATYA-B

ESIE21-02 – 2021.03

4.6.2 Humidity probes 114

4.6.3 Pressure probes 115

4.6.4 Air quality probes 117

5 FAQ 118

5.1 Frequently Asked Questions 118

5.2 Switching the unit on and o󰀨 118

5.2.1 Switchtheunitonandofromthedisplay. 118

5.2.2 SwitchtheunitonandofromexternalOKsignal 118

5.2.3 SwitchtheunitonandofromtheBMS 118

5.3 Change of set points 119

5.3.1 Setpoint editing from display 119

5.3.2 SetpointeditingfromBMS 119

5.4 Change language 119

5.5 Changing the date and time 120

5.6 Setting of time bands 120

5.7 Replacing the serial protocol 121

Contents

Service manualDaikin R32 Rooops UATYA-B

ESIE21-02 – 2021.03

1 INTRODUCTION

1.1 General

Some information on the use of this manual.

The purpose of this manual is to provide all information regarding the software functions of the controller for the units listed

on the cover and it is complementary to the controller installation and programming manual.

This manual is the “SERVICE” version, that is, it is intended only for after-sales service technicians and Factory technicians.

Information regarding installation of the units and relevant tests and checks for the rst starting is not given in this manual.

It is taken for granted that the unit has been installed correctly, the tests and checks prior to start-up have been carried out

and that routine maintenance is carried out, according to the information given in the “Installation, operation and mainte-

nance” manual for the units.

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 fun-

ctionalities.

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 ex-

tent 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.

1 Introducon

Service manual Daikin R32 Rooops UATYA-B

ESIE21-02 – 2021.03

2 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.

2.1 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

* 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

* Loading .conf

* Saving actual.conf

* Download files to USB key

- Maintenance

* Reset hours/starts

* Disabling

- Service

* Reset hours/starts

* Disabling

- pGD1 Emulator

2 The screens

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