Uniflair Manual

Operation and Maintenance Uniflair Chilled Water and Direct Expansion Expansion

Uni�air Uni� air Uni�air

C oolingSystem stem Cooling System

This manual is available in English on the enclosed CD. Este manual está disponible en español en el CD-ROM adjunto. O manual em Português está disponível no CD-ROM em anexo.

Contents General General Information Information...... ............ ........... .......... ........... ........... .......... .......... ........... ........... ....... .. 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Microproce Microprocessor ssor Control Control .......... ............... ........... ........... .......... .......... ........... ........... ....... .. 2 General Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Language Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Imperial measurements measurements selection . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Program Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 User Interface Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Pre-operation Pre-oper ation symbols symbol s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Operation Operatio n symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Symbol examples example s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8

Unit Start Up Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Switching Unit On and Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Switching on the t he unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Automatic Automati c mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10

Switching off of f the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Adjusting Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Unit Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Unit on/off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12

Input/Output Input/Outp ut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12

Setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12

Alarms history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13

Software information informati on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 EXV valve stat us . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13

GSM modem status stat us . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Uniflair CW and DX Operation and Maintenance Manual

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Settings Settings Menu Descriptio Description n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Setpoints Setpoint s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Operativ e settings setting s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Hour meter settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Alarm relay selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Serial/modem Serial/mod em settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 GSM modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19

SMS message receipt r eceipt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Message receipt result . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 LAN settings sett ings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Stand-by rotation alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Clock and Calendar Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Time bands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Configuring weekdays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Weekly program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Service Menu Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Hardware settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Software settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Sensors settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Alarm reset res et mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Memory operations ope rations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 EXV valve settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Main settings sett ings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Advanced settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Manual control con trol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Updating the Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Winload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 SmartKey SmartKe y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Active alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Alarm history hist ory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Alarm events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Exceeding temperature or humidity humidity limits . . . . . . . . . . . . . . . . . . . 43 Optional sensor or digital input alarms . . . . . . . . . . . . . . . . . . . . . . 43 Unit function func tion alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Electronic expansion expansion valve alarms (DX, TC, ES units only) . . . . . 45 Sensor alarms ala rms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Service note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 LAN interrupted alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 System alarms ala rms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Access alarms a larms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Remote alarm a larm signalling signall ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

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Default Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49 Ambient Temperature Regulation Diagrams . . . . . . . . . . . . . . . . . .53 CW Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 DX Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 TC Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 ES Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Ambient Humidity Regulation Diagram. . . . . . . . . . . . . . . . . . . . . . .55

Local Network ........................................... ................................................................ ..................... 56 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56 Common Network Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Up to 10 units connected to the network network with a single terminal . . 57 Up to 10 units each with its own terminal terminal . . . . . . . . . . . . . . . . . . . . 57 Up to 10 units with a single shared shared remote terminal . . . . . . . . . . . 57

pCO Boards Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58 Remote Terminal Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59 Important warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Maximum distances distances between the terminal and and the board . . . . . . . 60

LAN and Supervision Connection . . . . . . . . . . . . . . . . . . . . . . . . . . .60 Technical Technica l features feature s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Remote Terminal from the Board Connection . . . . . . . . . . . . . . . . .61 Terminal and pCO Board Addressing the Local Network . . . . . . . .62 Assigning the list of private private and shared terminals (pCO) . . . . . . . 62 Assigning the list of private and shared terminals . . . . . . . . . . . . . 63

pCO board LAN address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64 Unit address addre ss table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Terminal and pCO board addresses table . . . . . . . . . . . . . . . . . . . . 65

LAN Parameter Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Displaying the Network from the Terminal . . . . . . . . . . . . . . . . . . . .68

Maintenance...................................................................69 Safety During Maintenance Work . . . . . . . . . . . . . . . . . . . . . . . . . . .69 Quarterly Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69 Uniflair CW and DX Operation and Maintenance Manual

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Semi-Annual Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Annual Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Replacing Replaci ng the filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Actuator Actuator and Chilled Chilled Water Valve Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Actuator Actuator and Hot Water Valve Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Electrical Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Replacing the electrical heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

CW Troubleshooting ..................................... ..................................................... ................ 75 Initial Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Temperature Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Electric Heaters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Humidity Control. Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

DX Troubleshooting ...................................... ...................................................... ................ 78 Initial Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Temperature Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Humidity Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Compressors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

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General Information Overview This manual supplies general operation and maintenance information for Uniflair’s Microprocessor Control and Local Network. The descriptions and illustrations in this manual are owned by Schneider Electric. Schneider Electric reserves the right to make any alterations it sees fit in order to improve the product without having to update this document. The illustrations and images in this manual are examples only and may differ from practical situations.

Symbols Note the icons and be observant observant for them throughout throughout this manual (they (they are intended to call attention attention to potential hazards and important important information). information).

Warning: Indicates a hazard which, if not avoided, could result in personal injury or death.

Note: Indicates important information.

Abbreviations Note the model abbreviations abbreviations and be observant observant for them throughout throughout this manual: • CW: CW: Chille Chilled d Wate Water r • DX: Dire Direct ct Expan Expansio sion n • ES: Energ Energy y Savin Saving g • TC: Twin-Co win-Cool ol


1

Microprocessor Control General Features The microprocessor control manages unit operation. The control consists of: • Microprocessor control board housed inside inside the electrical panel • Graphi Graphicc user user interf interface ace

Control Board

Graphic User Interface

The microprocessor control board contains the program settings and all the stored operating parameters that can be viewed and set on the user interface. The control system has the following functions: • Temperature and humidity humidity control control based on setpoints setpoints programmed on the user interface interface • Ability to set dual setpoints setpoints for for temperature control • Complete Complete alarm alarm signal signalling ling system system • Ability Ability to record record alarms alarms • Configuration of alarm signal signal contacts on the user interface • Programmin Programming g of automatic automatic restart restart after power power is restored restored • Remote Remote unit unit switch switch on/of on/offf • Control compressor compressor sequencing sequencing to guarantee guarantee efficiency efficiency and reliability • Setting of electronic electronic thermostat valve with alarm signalling signalling • Two levels levels for password (settings and service) • Ability to communicate communicate with a supervision supervision system using the the RS485 serial board, LON FTT10 FTT10 by Trend and pCO Web (optional) • Control Control of clock/d clock/date ate (clock (clock card option optional) al) • Calculation of of operating hours and cycle times of of major components components • Symbols to show the the status of all sensors sensors and the values recorded recorded by the sensors connected connected to the control board • Operating scheduling scheduling times for switching switching the units on/off on/off (with optional optional clock board): weekdays, weekends and holidays • Local Network Management with optional programming the rotation rotation of one or two two stand-by units units and the operation of these units setback mode settings based on average temperatures • “Override” function function that allows allows manual control control of major components components without without excluding remote remote control

2


User Interface The user interface consists of: • 1 backlit backlit 132 x 64 pixel pixel LCD display display with with buzzer buzzer • 6 backlit buttons to move between between and change parameters The microprocessor board is connected to the user interface by a 6-conductor telephone cable with a RJ11 jack connector.

Button

Description

ALARM

Views and resets alarms (flashes red when an alarm is triggered)

PROGRAM

Enters Configuration Menu

ESCAPE

Exits the screens

UP

Moves up the menu

ENTER

Confirms

DOWN

Move down the menu


3

Language Selection The display uses the language that has been defined by the regulation program selected in the flash memory. memory. The available language are: • IT = Ita Itali lian an • EN = Eng Engli lish sh • DE = Ger Germa man n • FR = Fre Frenc nch h • SP = S Spa pani nish sh • RU = Rus Russi sian an To select a different language at any time, press the ESCAPE button and then the ENTER button.

Note: Screens that are reserved for use by service technicians (such as the “Service Menu”) will always appear in English. From the CDZNEW 2.9 software version, it is possible to directly select the wanted language, using the appropriate screen. The initials of the current language will appear in the bottom right corner of the screen. To display this screen, press the PROGRAM button and select the “Language Menu.”

Imperial measurements selection To display the imperial measurements select the language from the two available ones (English and Spanish). As seen in the screen above, the Fahrenheit symbol (°F) is displayed for English and Spanish. By enabling this mode, the values will be converted from: • Celsiu Celsiuss to Fahre Fahrenhe nheit it • Bar Bar to to PSI PSI • Pa to in wc

4


Program Identification This manual describes the standard operating characteristics for air conditioning units.

Note: The characteristics of special-order units may differ from those described in this manual.

Family

Release

Language

Update

LAN Version

CDZNEW

v 3.0

GB

03/01/2011

LAN


5

User Interface Display The user interface main screen displays the system state information. A B C

• A: Time, A: Time, date (if the clock card is inserted) and number of the unit in the LAN network • B: Room B: Room temperature and the percentage of humidity (if the temperature and humidity sensor is installed) • C: Information regarding unit status

Pre-operation symbols When the unit is not in operation, the following symbols display: display:

6

•

: Press enter to switch switch on

•

: Switched Switched off by remote remote contact contact

•

: Switched Switched off by supervisi supervision on system system

•

: Switched Switched off with timer

•

: Unit in operation operational al transfer transfer cycle

•

: Switched Switched off by fire/smok fire/smokee contact contact

•

: Switched Switched off by flooding flooding contact contact

•

: Setb Setbac ack k mode mode

•

: Switched Switched off by air flow alarm

•

: Switched Switched off by manual manual shut down

•

: Switched Switched off by high air flow alarm


Operation symbols During operation, various symbols are displayed that indicate operating status of the unit:

Note: If the user interface is flashing, a call is in progress.

Symbol

Description Evaporator fan on Power frequency Alarm signalling (there is also a red flashing ALARM button) Mechanical cooling activated Compressor status (if more than 1, the number is shown inside) Heaters on (if in stages, a number will appear by its side) Cold water valve on Hot water valve on Hot gas valve on Dehumidification on Humidifier on Generic alarm activated Time rotation activated Unit manual switch-on Unit manually on Unit manual switch-off Unit switched on or off by remote terminal Unit switched on by supervisory system


7

Symbol examples In DX models, after the main screen, a second screen is displayed that indicates the number and status of the compressors.

In CW models, the displayed screen indicates the number of cold water valves, their opening, and the water inlet and outlet temperature.

CW Model

CW Dual Coil Version

In the CW model, if the hot water valve is also present, the corresponding icon is displayed with an opening percentage.

8


Unit Start Up Conditions The following operations must be performed before unit start up: • Check that the display light light is on to verify that the the controller is powered. • Check that the red light on the ALARM button button is off (no (no alarms are active). active). • Check that the unit switches are ON after pressing pressing the ENTER button, or, or, alternately: – Check that the unit unit is started when the remote digital digital input ID2/4/6 ID2/4/6 contact is closed. – Check that the unit is is started by the supervisory supervisory system (if a serial card is inserted). inserted). – Check that the unit is is started by the daily or or weekly time schedules (if clock card inserted).


9

Switching Unit On and Off Switching on the unit The unit can be switched on in any of the following ways: • Manually: Using the the keypad, press the ENTER ENTER button to switch on the unit; a moving moving bar will appear followed by fan symbol . • Automatic Automatic mode: mode: The unit unit can be switched switched on on by: a. Remote Remote on\ on\of offf contac contactt b. Supervision system system c. Timer Timer system system

(if serial card inserted)

(if clock card inserted) inserted)

d. Operationa Operationall transfe transferr cycle cycle

Note: If the unit is programmed to setback mode, it will automatically switch on even when it exceeds the set humidity temperature limits .

Automatic mode When in automatic mode, the unit can only be switched on by overriding it. To switch the unit on in automatic mode: 1. Go to the main screen and use use the UP or DOWN button to select “Switch On Unit.” The symbol will appear. 2. Press Press the the ENTE ENTER R butto button. n. 3. Enter Enter the passwo password. rd. 4. Press the ENTER button (the Override Switch On symbol

will appear).

Note: The password is provided inside the envelope enclosed with this manual.

Switching off the unit To switch off the unit: 1. Go to the main screen, press the the UP or DOWN DOWN button to to select “Switch Off Unit.” The symbol will appear. 2. Press Press the the ENTE ENTER R butto button. n. 3. Enter Enter the passwo password. rd. 4. Press the ENTER button (the Override Switch Off symbol screen).

10

will appear on the main


Adjusting Parameters To modify set parameters and to configure a sub-routine (setpoint, differential): 1. Proceed Proceed to screens screens in the the programmin programming g method. method. 2. Use the UP or DOWN DOWN button to to select the screen that that shows the parameter parameter (a cursor flashes in the top left corner). 3. Press the ENTER ENTER button button to move the cursor cursor to the the parameter to be modified. 4. To select the parameter value, which which can be numerical or Boolean (YES/NO), (YES/NO), use the UP or or DOWN button.

Note: Numeric values can be varied only within the set control limits.

5. Press Press the the ENTE ENTER R butto button. n. 6. To return to the previous screen, press the ESCAPE button. 7. To modify parameters parameters in other screens screens press ESCAPE until the cursor cursor is at the start of the first first line. 8. Press the the UP or DOWN butto button n to select select the desired desired screen. screen.


11

Unit Configuration This screen allows you to view operation information; however, only the information or data relative to the chosen configuration appears. To display unit configuration: 1. From the main screen, screen, press the UP UP or DOWN button button until reaching the menu menu that groups the items described in the following sections. 2. Select Select the the desir desired ed optio option. n. 3. Press Press the the ENT ENTER ER butto button. n.

Unit on/off This screen is used to switch the unit ON and OFF. Based on the current status of the unit, a different icon is displayed indicating the operation to be performed. In the event of forced activation/deactivation activation/deactivation in automatic mode (remote contact, supervisor, time bands), the settings password is required for confirmation.

Input/Output This screen is used to verify the state of the input and output boards. The initials on the display are the same used to identify components within the unit.

Setpoints This screen is used to check the setpoint and the other calibration parameters for the correct operation operation of the unit. Since the parameters are read-only the values values cannot be changed. To set the values and access the parameters in programming mode, enter the settings’ password. All variables are factory preset so that the control functions correctly maintain the room temperature.

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Alarms history This screen displays the historical sequence of the alarms activated (the microprocessor stores the last 100 events in its memory.) All the alarms saved can be read in sequence by pressing the UP or DOWN button. If the clock card (optional) is installed, the date and time is recorded for each alarm event.

Software information This screen displays the software version, BIOS, boot , and unit serial number. This information is essential when adding a new unit to a group of connected units in the LAN (the controllers must have the same program version). When contacting a service center, the version of the control program saved on the control board must be indicated precisely.

EXV valve status This screen displays the information from the electronic expansion valve driver boards.

GSM modem status This screen displays the information on the operating status of the GSM modem and any error signals.


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Settings Menu Description This screen is used to set the unit operating and signal parameters. To access the Settings Menu Description screen: 1. Press Press the the PROGRA PROGRAM M button button.. 2. Select Select the “Setting “Settingss Menu” and press press the the ENTER button button.. 3. Enter Enter the settings’ settings’ password password by pressin pressing g UP or DOWN button. button. 4. Press Press the the ENT ENTER ER butto button. n.

Setpoints This screen is used to check the setpoint and the other calibration parameters for the correct operation operation of the unit. To set the values and access the parameters in programming mode, enter the settings password. All variables are factory preset so that the control functions correctly maintain the room temperature.

Operative settings All variables are pre-set in the factory so that the control functions correctly maintain standard conditions in the room. This screen displays: • Coolin Cooling g setp setpoi oint nt • Cooling Cooling proportio proportional nal band band • K p proportional cooling gain • Adjustment offset offset derived from remote setpoint (remote setpoint setpoint 0-10V present) present) • Setpoint active active after the sum of the cooling setpoint plus plus offset • Status Status of the operati operating ng season season (CW mode mode only) This screen is displayed if electric heaters are installed: • Heatin Heating g setpo setpoint int • K p proportional heating gain

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This screen is displayed if the unit is connected to a system called Master Control, which is used to manage the cooling installation by optimizing the operation of all the devices.

This screen displays the humidity control setpoint.

This screen displays the second temperature control setpoint.

This screen displays whether the compensation setpoint is enabled and when the outlet probe is used for room temperature control.

Graph of the compensation function

This screen displays the alarm activation settings: • High High room room temper temperatu ature re • Low room room temper temperatu ature re • High High room room humi humidit dity y • Low room room humid humidity ity • High deliver delivery y temperatur temperaturee plus alarm alarm enabling enabling Uniflair CW and DX Operation and Maintenance Manual

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Sleep mode This screen displays the setback function, which can be either activated or deactivated by using the control panel or BMS. This function consists of an automatic start-up of the standby unit if the unit exceeds the following programmable limits for at least 30 seconds: • Minimu Minimum m temper temperatu ature re • Maximu Maximum m tempe temperat rature ure • Minimum relative relative humidity (only with with optional humidity sensor) sensor) • Maximum relative relative humidity (only with optional humidity humidity sensor) sensor) The setback function intervenes to control the room conditions—although conditions—although with larger tolerances— even if the whole system is in stand-by. stand-by. Its intervention is independent and not influenced by signals from remote systems. The intervention of the setback function is not considered an alarm situation. Fan Cyclical Start: If set to Y, Y, the fan runs in cycles, defined by the cycle time, to allow air from the room to be drawn across the sensor. When in setback mode, in the STATUS STATUS screen the symbol is displayed. displayed . Normal operating conditions are reset automatically when the temperature values return to values values set for [temp. min. + 2°C] + 3.6°F and for [max. temp. - 2°C] - 3.6°F. A minimum of 15 minutes must pass before the unit exits the setback mode. This enables stable conditions to be reached and avoids continuous switching on and off of the fans. When normal conditions return, the on the previous status.

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icon is displayed, alternating with other icons depending


Hour meter settings This screen enables setting the maintenance intervals for the components of the unit, establishing a threshold for operation hours. When the device reaches that limit, the microprocessor signals the maintenance request, activating an alarm and displa displayin ying g the symb symbol ol “ ” on the the STA STATUS scre screen. en. The following unit components have maintenance interval monitoring: • Evap Evapor orat ator or fan fanss • Comp Compre ress ssor orss • Electr Electrica icall Heate Heaters rs • Air Air fil filte ters rs • Humi Humidi difi fier er In the TC model, the hours of operating in DX and CW mode is displayed (hour meter parameters per each component): • Reading Reading the cumulat cumulative ive number number of service service hours hours • Setting the “Service” intervention intervention threshold threshold for maintenance (setting (setting the threshold at “0” inhibits inhibits the signaling of the “Service” request) • Zeroing the timer (Reset = “Yes”), “Yes”), e.g. after the service intervention intervention and/or and/or the replacement of the component Values can be changed only in the context of permitted setting fields.


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Alarm relay selection This screen is used to change the status of the alarm signal contact :, Alarm “A” and “B.”

This screen determines the digital output that signals the alarm. The configuration of an alarm does NOT affect the action performed by the controller (signal only on the display or shutdown of the device affected by the alarm).

Serial/modem settings Supervision system: A supervision system exchanges data via a serial cable with the board of the unit that is commanded and controlled remotely. remotely. An optional serial card is available that permits the interface to an RS232/RS485 RS232/RS485 device for data transmission). Both for an external supervision system (with the possibility to turn On/Off the unit) or with a closed-circuit monitoring system (only data transmission), the units serial address and the transmission speed must be set. This screen allows you to determine: • Serial address of the unit connected connected to the the supervision serial network (must (must be the same as the serial address set in the supervision program) • Speed of data transmission transmission (‘Vel. (‘Vel. Ser.’): 1200, 1200, 2400, 4800 for RS232 or 1200, 2400, 4800, 4800, 9600 and 19200 for RS485 • Communication Protocol Standard Standard Modbus Modbus or GSM modem

Note: With the LON protocol, set the serial speed to “4800” and the protocol to “Standard.”

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GSM modem This screen enables setting the parameters for the GSM modem connected to the unit through RS232 serial board inserted in UpCO1 board. The parameters are: • Total phone number: enter the number of telephone telephone numbers present in contacts (maximum four) • Phone number: enter enter the contact phone number and and the phone number to be recorded recorded (in case of alarm, the modem starts sending the text message (SMS) to the first number in contacts; in case of failed connection, the modem attempts the message again after 60 seconds, and then will move to the next number in the contacts) • Modem passw password: ord: passw password ord from from remote remote • Modem rings rings:: the number number of rings rings to make make • Send SMS enable: enables enables the sending sending of a text text message (SMS) in case of an alarm activation activation This screen enables entering a text message to be combined with the activated alarm message and then to be sent to the addressee of the numbers recorded in the previous screen.


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The alarms activating the sending of the SMS are: • “Loss “Loss of of Air Air Flow” Flow” • “Compr “Compress essor or Alar Alarm” m” • “Smoke “Smoke-Fi -Fire re Alar Alarm” m” • “EXV Valve Failure” Failure” • “Heate “Heaters rs Overh Overheat eating ing • “Clogg “Clogged ed Filt Filter” er”,, • “Flood “Flooding ing Alarm” Alarm” • “Room “Room Humi Humid.L d.Limi imits” ts” • “Room “Room Temp Temp.Li .Limit mits” s” • “Contr “Control ol Failur Failure” e” • “LAN “LAN Disco Disconne nnecte cted” d” • “Humid “Humid.Se .Senso nsorr Failure Failure”” • “Temp.Se “Temp.Sensor nsor Failure” Failure” • “High “High Air Flow” Flow” • “CW “CW Ala Alarm rm”” • “Humid “Humidifi ifier er Alar Alarm” m” • “Dig.I “Dig.Inpu nputt 6 Alar Alarm” m” • “Dig.I “Dig.Inpu nputt 4 Alar Alarm” m” • “Dig.I “Dig.Inpu nputt 2 Alarm Alarm”” • “W “Wron rong g Passwo Password” rd” • “Low “Low Air Air Press Pressure ure”, ”, • “Frequ “Frequenc ency y N.D. N.D.”” Example: The application managing the GSM modem may define an alarm message as: << Centrale Server Padova >> <> The first part of the message shows the unit allocation position (see the SMS text); the second part shows the type of alarm activated (see the alarms list). This screen enables performing a operating test of the modem by means of sending a text message (SMS) written in the previous screen (SMS text). Hang Up enables ending the call.

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SMS message receipt The application enables receiving SMS messages to perform operating or alarm reset controls. The messages must be sent to mobile telephones and not through the Internet. The sent messages must have the following format: .pCO1.0000.D.005.000001& • .pCO1: .pCO1: mess message age head heading ing • .0000: remote password password that must must coincide with with the value entered in the “Modem Password” parameter • .D: type of variable variable to be set between “A” Analog, Analog, “I” Full and and “D” Digital • .005: index of the variable variable to be set • .000001: the value with with which the variable variable is to be set must always be of 6 digits, the first of of which represents the symbol, and the others are digits ‘0’ to ‘9’ For example, if the full variable has value 12, the value will be ‘000012’ or ‘+00012’. If the variable value is -243, the value will be ‘-00243’. For the analog variables, the sent value is the effective variable value multiplied by 10. For example, the value ‘-00243’ will correspond to –24.3. For the digital variables, the possible values are ‘000000’ or ‘000001’. One SMS message can manage a maximum of 11variables simultaneously (160 characters per message is the maximum). The string will be made up as follows: .pCO1

.0000

.D.005.000001 1st variable

.A.001.+00023 2nd variable

.I.007.000001& 3rd variable

Warning: The SMS message must not contain spaces, and it must start with a dot.The fields must be separated by a dot, and the message must end with the character “&” (not preceded by a dot).


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Message receipt result The control board at regular two minute intervals downloads all newly received SMS messages. If the message is correct, the control activates its processing every 15 seconds without incoming or outgoing calls. If the message is not correct in the syntax or in the password, it is deleted. During the time necessary for processing the correct messages (about 7 seconds), the incoming calls are inhibited and re-enabled at the end of processing each message. If during the downloading phase of the new SMS messages the memory reserved to SMS receipt becomes full, all received messages will be lost. If so, remaining remaining alarms remain active. The possible causes of a full memory are: • Receipt of three or more messages with with the maximum length length (11 variables variables setting) within within two minutes • Receipt of seven or more short messages (a variable variable setting) within within two minutes. minutes.

LAN settings The pCO controller can be enabled for the automatic management of a Local Network connected to more than one unit (up to a maximum ten), of which some are in operation and others in stand-by (up to a maximum two units). In the default configuration this is set to “NO LAN”. A single unit can operate temporarily if the address of the board is equal to one. This screen states: • Number of units units in the Local Local Network has to be set (up to a maximum ten ten units) • Start-up of the stand-by stand-by unit in the event of malfunctions on a unit unit connected in the LAN • Rotation time to allow allow the workload to be shared between the units units at programable time intervals intervals (by setting cycle time = h 000, the controller runs a test, rotating the units at two-minute intervals) • Possibil Possibility ity of having having one or two two units in in standby standby • Possibility to to start the stand-by unit unit only in the event of alarms (the rotation time is disabled) disabled) The next screen, displayed only if the Local Network is set, gives the possibility to to control unit operation with with a mean temperature measured in the room or with the “local” value measured by the sensor inside the unit: • “Local Values” Values” mode: unit unit control of the temperature and humidity values are read by the sensors in the unit • “Mean Values” Values” mode: Unit Unit control of of the temperature and humidity values are read by the sensors in the active connected units in the Local Network.Whatever the difference between the mean value and the sensor reading exceeds the value “Mean/Loc.Diff.” (default equal to 2°C, 3.6°F), the control automatically exchanges from the “Mean” mode to the “Local” mode.

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The “Exclude From Rotation” parameter enables excluding the unit from the rotation time management by working in in Stand-Alone. Stand-Alone. If required, this this function must must be enabled for for an individual individual unit. The second parameter, displayed displayed only if the floor air air pressure transducer system system (AFPS) is configured (used to manage floor air pressure control) in local mode or with mean values.

Stand-by rotation alarms This screen is displayed if the Local Network is configured and is used to manage the start-up of the stand-by unit when a n alarm is activated.


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Clock and Calendar Settings If the microprocessor is installed with the optional clock circuit, the date, time, and weekday is shown in the Status screen. The clock settings correspond with: • Start up and and shut down down of the unit according to timed program • Alarm Alarm event eventss recordi recordings ngs To set the time/date and to program the time bands use the following screens. In this screen, set: • Time (hour (hours, s, minute minutes) s) • Date (day, (day, month, month, year) • Weekd eekday ay

Time bands This device sets the automatic start up and shut down of the unit on a temporary basis (time bands) to obtain: • Up to 3 on-off on-off daily cycles, each with start up and stop stop time • Weekly cycle distinguishing distinguishing the daily cycles divided into into regular days N (default is from Monday to Friday), pre-holiday P (default is on Saturday), and holidays F (default is on Sunday) By setting “Yes” the time bands device is activated; in field C of the Status screen the Time icon appears. The three adjacent screens show programmed time time cycles – characterized by a start time (On) and a stop time (Off) – of the regular days (N), pre-holidays (P), holidays (F).

With a stopped unit (“Programmed Stop - Re-Start. At...”), the icon appears in the display with the time and weekday that is programmed for the next start-up. By setting 00:00 in the On or Off the cycle is ignored.

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Configuring weekdays This screen is displayed when the time bands device is activated (“Unit On-Off Cycle”: Yes). The present day is shown (at the end of the programming of the time bands): • N: Regula Regularr day day or holiday holiday • P: Pre Pre-h -hol olid iday ay • F: Holi Holida day y To change the classifications, press ENTER to move to next screen or press the DOWN button.

Weekly program The microprocessor memory is classified as: • Regular Regular days (N) all all week days days from Monday Monday to Friday Friday • Pre-holida Pre-holidays ys (P) (P) Saturd Saturday ay • Holida Holiday y (F) (F) Sunda Sunday y Use this screen (moving from previous screen by pressing the ENTER button) to change the the classification of the the seven days to come, including the actual day that is shown on the first line of the screen. Under each day there is a recorded classification (N or P or F) that can be modified by pressing the UP or DOWN button until finding the wanted classification By pressing the ENTER button, the set classification is confirmed and the next day is selected. If the classification differs from the standard, the symbol “>” appears automatically before the classification.The classification.The selected time bands are the same as the days of the classification. The selection of the time bands is cancelled automatically once the day for which it was activated has passed. To exit from the time-calendar and time bands screens press the ESCAPE button.


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Service Menu Description This part of the program is used to configure the devices installed on the unit and their operation. These operations should be performed by certified personnel.

Note: This manual describes the functions of the program in general and that based on the configuration set, the fields , and configuration screens may be enabled or disabled. To access this section: 1. Press Press the the PROGRA PROGRAM M button button.. 2. Select Select the the “Serv “Service ice Menu Menu.” .” 3. Press Press the the ENT ENTER ER butto button. n. 4. Enter the the service service password password by pressing pressing UP UP or DOWN button button.. 5. Press Press the the ENT ENTER ER butto button. n.

Hardware settings If the memory is cleared in the controller, the unit needs to be “reconfigured” based on how it was originally originally ordered from the the factory. factory. In this phase it is necessary to define all the elements of the unit that the microprocessor must control. As a rule, this function is only required when the unit is in the factory during final inspections; it can, however, be used in the field for troubleshooting purposes or for unit modification. The screens that refer to this configuration are reserved for technicians only: • Smal Smalll Uni Unit: t: NO • Unit Type: Type: identifies the the type of unit between DX, DX, CW, CW, ES, TC • Compressors: identifies identifies the number number of compressors installed on the unit (maximum 4) • Refrigerant Circuits: Circuits: identifies identifies the number number of refrigerant refrigerant circuits (maximum 2) • Compressor Type: Type: identifies identifies the type of compressor installed installed • Heaters: identifies identifies the number of operating stages stages of the electric electric heaters installed installed • Hot Water Water Coil: enables operation of the hot water coil/valve • Hot Water Water Coil Out: enables the the hot water coil/valve coil/valve operating through analog analog output Y4. This screen is used to configure: • Hot Gas Coil: Coil: enables operation operation of the hot hot gas coil/valve coil/valve in the DX DX models • Exter.Hum. Exter.Hum. (on/off): (on/off): enables operation operation of external humidifier via an on/off contact from a digital output on the control board

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• Humidif. 0-10V: 0-10V: enables operation operation of the external external humidifier humidifier via the 0-10 Volt analog output Y2 • Dual Coil: enables the configuration for CW Dual Dual Coil units units • Water Valve Valve Type: Type: determines the number number of ports on the water valves in the CW model • Phases Seq. Control: Control: enables enables the possibility possibility of managing the phases sequence control in the CW model This screen is used to configure input 1 as an optional supply temperature sensor (Deliv.T (Deliv.Temp.Sensor) emp.Sensor) or as the setpoint remote control (Setp.Remote Control).

This screen is used to configure digital input 5 as: • No switch switch connecte connected: d: no connect connection ion • Summer/Winter Summer/Winter Switch: change operating operating season in the CW model • Water Flow Flow Switch: Switch: water water flow switch switch In the CW model, the operating season can be changed over, in alternative to the digital input, from the user terminal, on the setpoint screen, or via serial connection (supervisor). This screen and the following are used to c onfigure digital inputs 2/4/6. This procedure allows the activation of digital inputs ID2-4-6 if optional kits are installed. The kits include fire and smoke sensors, flood sensors, and high/low outside temperature and humidity sensors that must be connected to a specific input. First verify that multifunction inputs have not been previously configured. The table below shows a detailed description of each input, with the corresponding function: Digital Input 2

Digital Input 4

Digital Input 6

Not Used 1. Floo Floodi din ng Se Senso nsor 2. Remote ON/OFF OFF 3. Chan Change ge Setp Setpoi oin nt 4. User User Conf Config igur urat atio ion: n: · Alarm si signalling · DX/CW Switch-Over · Emergency Working

Not Used 1. Smok Smokee-Fi Fire re Sens Sensor or 2. Remote ON/OF /OFF 3. Chan Change ge Setp Setpoi oint nt 4. User User Conf Config igur urat atio ion: n: · Alarm si signalling · DX/CW Switch-Over · Emergency Working

Not Used 1. Exte Extern rnal al Limi Limitt Sen Senso sor r 2. Rem Remote ON/OF /OFF 3. Chan Change ge Setp Setpoi oin nt 4. User User Conf Config igur urat atio ion: n: · Alarm si signalling · DX/CW Switch-Over · Emergency Working


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If the digital input chosen is configured as “User C onfiguration,” onfiguration,” the following screen is used to select the other functions: • Alarm signalling: signalling: Alarm Alarm signal coming coming from a component outside of of the unit • DX/CW Switch-Over: Switch-Over: External digital contact contact for changing changing over operating mode of the unit (TC model only) • Emergency Working: Working: Signal coming coming from a component outside outside of the unit (the Status Status screen will display the warning icon) In addition, the status of the contact can be defined, N.O. or N.C. This screen is displayed if the remote setpoint control is enabled. Remote setpoint control sets the parameters relating to the remote control of the unit operating value. Connect a 20Kohm high precision (1/1000) resistance in a series to terminal B1 of board UpCO1 or to terminal B3 of board UpCOE; apply a 0-10V signal between this terminal and the GND terminal (check attached wiring diagram). The zero adjustment is automatic using the “Hardware Setup” function. It enables determining: • Minimum Minimum and maximum maximum signal signal in Vcc Vcc (from 0 to 10 Vcc) Vcc) • Minimum and maximum maximum offset to be calculated depending depending on Vcc in in input Example: At a minimum value set that with 0 Vcc there is an offset of 0.0°C (0.0°F), whereas to a maximum value of 10 Vcc set an offset of 5.0°C (9.0°F). The control, depending on the signal sent to it and read through the used analog input, calculates the offset to be added to operating setpoint. It is used to configure: • Anti-Hunting Anti-Hunting Time: Enables Enables setting the anti-hunting anti-hunting time of the final final calculated setpoint • Active Signal: Active signal in tension read read by the analog analog input of the board • Active Offset: Offset: Active offset offset calculated based based on the set “Signal V” and “Offset °C” parameters This screen, available if the AFPS is installed, is used to define: • Range Range Begin: Transd Transducer ucer reading reading start start range value value • Range End: End: Transd Transducer ucer reading reading end end range value value • Read Value: Value: Value Value read by the the sensor • Delta: Maximum variation of of the input input without without activating the filter • Time: Time: Durati Duration on of the the filter filter • Value: Value Value read read by the sensor sensor

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This screen is used to establish: • Fan Speed: Speed: Rated fan speed • Fan Supply: Supply: Number Number of phases phases in the the fan power supply supply • Fan Signal: Signal: Signal Signal for modulati modulating ng the fan speed speed • Dehumidification Fan Speed: Rated speed in the dehumidification dehumidification phase (for Amico units with with mechanical thermostatic thermostatic valve only) • Modulation with with Air Pressure Enabled: Enables Enables fan speed modulation modulation with the AFPS system • Air Pres Press. s. Tran Transd sduce ucer r : Determines whether the transducer is installed on the unit This screen, available if the AFPS is installed, is used to define: • Minimum Minimum Speed-DX: Speed-DX: Minimum Minimum speed speed in TC models models only only • Minimum Minimum Speed: Speed: Minimum Minimum fan fan control control speed speed • Maximum Maximum Speed: Speed: Maximum Maximum fan control control speed speed This screen, available if the AFPS is installed, is used to define: • Setpoint: Reference Reference pressure value value to be maintained by modulating modulating the fan speed • Dead Band: Control Control dead dead band band • Regul. Regul. Band: Control Control proport proportional ional band band • Integral Integral Time: Time: Integral Integral time time • Derivat. Derivat. Time: Time: Deriva Derivative tive time time • Air pressure pressure:: Value Value read read by the sensor sensor • Evaporatin Evaporating g Fan: Evaporator Evaporator fan control control percentage percentage This screen, available if the AFPS is installed, is used to define: • Alarm Level: Level: Low air pressure alarm activation activation threshold threshold • Alarm Delay: Low air pressure pressure alarm activation activation delay delay time

This screen is used to establish: • Enable: Enables Enables fan speed control control associated with the opening opening of the water valve (CW model only) • Minimum Minimum Speed: Speed: Minimum Minimum fan fan control control speed speed • Maximum Maximum Speed: Speed: Maximum Maximum fan control control speed speed This screen allows enabling fan start-up at maximum speed (100%) for a maximum time of 10 seconds, in units with single-phase fan.


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This screen is used to establish which resources remain active in the event of emergency operation, activated by a multifunction digital input ID2/4/6 configured as “User Configuration - Emergency Working.” Working.”

This screen, displayed only when the electronic expansion valve is installed, is used to establish the activation of the low pressure alarm by the pressure transducer connected to the driver, setting: • Normal Normal Limit: Limit: Rated operat operating ing pressu pressure re • Alarm Diff.: Differential pressure due to the activation of alarm BP • Alarm Delay After Compr. Compr. On: Alarm Alarm BP activation activation delay time from compressor on • Alarm Delay Normal Working: Working: Alarm BP activation activation delay time during normal operation This screen, displayed only when the expansion valve is installed, is used to establish the activation of the low pressure alarm by the pressure switch connected to ID6, setting: • Alarm Delay After After Compr. Compr. On: Alarm BP activation delay delay time from compressor on • Alarm Delay Normal Working: Working: Alarm BP activation activation delay time during normal operation This screen, displayed only if the multifunction digital input is enabled, is used to set: • Off Unit on Alarm: Enables Enables the shutdown shutdown of the unit if the flood flood alarm is activated • Valve Closed on Al.: Enables Enables the closing of the the water valve if the flood alarm is activated This screen is used to set: • On/Off mode mode Via Via input contact: contact: Enables unit unit on/off via the multifunction digital input • On/Off mode mode only Via Via serial: Enables Enables unit on/off on/off from BMS • Motorized Motorized Damper: Damper: Enables Enables operatio operation n of the damper • Opening Time: Time: Damper opening opening time (during this period the the start of the fan and the air flow alarm are ignored) • Mot. Damper Damper Output: Output: Damper Damper control control outpu outputt This screen is used to set: • Backlight Time: Time: Time the display backlighting remains remains on (this time also coincides with the timeout for entering the password) • Buzzer Buzzer Type: Type: Enables Enables operation operation of the the buzzer • Time Time On: Time Time the buzzer buzzer remain remainss on

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This screen is used to set the mains frequency (automatic or manual).

This screen is used to set the unit serial number. The serial number can be found on the nameplate found inside the electrical panel.

Software settings This screen is used to set: • Anti-Hunting Time Constant: Constant: the the time constant constant for the temperature control action to avoid excessive temperature swings around the setpoint (the higher the thermal inertia of the air-conditioned air-conditioned environment, the higher the value needs to be set) • Humid.C.Type: Humid.C.Type: Humidity Humidity control type between between relative (rH%) or absolute (g/Kg) • Dehumid.Control: Enables dehumidification dehumidification control control (only if the the humidity probe probe is installed) installed) • Dehum.Open Valve: Valve: Maximum opening opening percentage of the cold water water valve during during dehumidification phase in Cooling Water mode • Capacity Limitation: Activation Activation of the capacity of the water coil in in the Cooling Water Water units during dehumidification dehumidification phase • Cap. Lim.: Capacity Capacity logic between Standard Standard or Advanced Advanced mode This screen enables setting the parameters for the advanced adjustment logic of dehumidification. dehumidification. Example: If the opening of the valve is greater than the “Threshold Valve” Valve” value equal to a time of “Observ.Time,” “Observ.Time,” it means that the heat load is high and, therefore, the coil is not partialized; whereas if opening is lower, the water coil is partialized. This screen is enabled to set the atmospheric pressure (millibar) depending on the different geographical areas for calculating the absolute humidity value in g/Kg.


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This screen is used to set: • Deliv.T Deliv.T.. Low Limit: Enables minimum minimum air outlet temperature temperature control • Deliv.T Deliv.T.. Set Limit: Minimum Minimum air outlet temperature setpoint setpoint (if the function is enabled and the delivery air temperature is near Deliv.T. Set Limit setpoint, control starts to disable the active resources, meaning switch-off the compressors for the DX units or close the valves for the cooling water units) This screen is used to set the PID adjustment parameters in Cooling and Heating mode: • Integral Time: Time: Time Time constant of the integral integral action • Derivative Time: Time: Time Time constant of the derivative derivative action action • Dead Zone: Zone: Dead Dead adjust adjustment ment zone zone This screen is used to set the type of control for the operation of the external humidifier via the 0-10V signal sent by the board.

These screens are used to make the settings for the condensing circuit on: • DX uni units ts • TC or ES units, units, during the mechanical cooling cooling phase with only the compressors on The controller keeps the water temperature in the closed circuit at a suitable value for condensing: between the setpoints plus a fixed differential of 6°C (10.8°F).

The temperature is controlled by managing the operation of the DryCooler fans (“Rad-Cooler”) connected to the indoor unit control: • “On-Off”: Operation of the radiator fans is either on or off • Modulating (“Modul”): (“Modul”): Control of the 0-10 V signal sent via analog analog output Y1 to manage manage the radiator DryCooler fan speed

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This screen is only available in the Twin-Cool model and is used to manage the settings for activating the changeover from mechanical cooling operation to operation with CW.

To avoid continuously alternating between the two operating modes, there is a minimum interval of 30 minutes between two consecutive activations of the cold water valve. If the high room temperature limit is exceeded (default: 30 °C, 86 °F), the unit automatically switches from CW operation to DX operation, signaling the “High cold water temperature or valve fault” alarm. This screen is only available in the Twin-cool model and is used to enable CW operation only if the alarm is activated in DX mode or via multifunction digital contact or by BMS.

This screen is used to set the type of control in CW mode: • Room Temperature: Temperature: Unit controls the return air temperature • Delivery Temperature: Temperature: Unit Unit controls the outlet air temperature

This screen is only available in the CW model and is used to establish the dehumidification settings on CW units and calibrate the high temperature alarm (only if the inlet water temperature probe is installed).


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During the dehumidification phase, a special control function is activated, which acts as follows: • The controller controller sends the chiller a request for water at a lower temperature to allow dehumidification; this is done by instantly activating digital output DO7. • Temperature probe located on the CW inlet inlet is read. • When the value value read reaches the the “setpoint” as set on the screen, screen, the valve is is opened to the maximum position on the following screen. • If the “setpoint” “setpoint” is not reached, after 15 minutes minutes an alarm is signalled (“CW too warm to dehumidify”). The temperature probe on the CW inlet is also used to control the “High CW temp.” alarm, when the temperature exceeds the ‘High Temp.’ value set on the screen, signaling a possible fault on the chiller. This screen is only available in the TC model and is used to enable the variation in the chiller cooling setpoint for dehumidification. This screen is used to set the setpoint that triggers the switching between the two heating systems. This screen concerns the behavior during the initial transients and is used to set: • At Power On: Delay in restarting restarting the unit unit after a power power failure; this this is used to prevent simultaneous starts in multiple installations (units in the LAN automatically feature a sequence start-up progressive [unit 1, unit 2, …] with 5 second intervals between one unit and the next) • Regul. Transient: Transient: Period of time between between when the unit starts starts and control commences (this (this is the initial period required for the control system to become stable; in this period the air flow switch reading is also ignored allowing the unit to start without the “No air flow” alarm being activated, particularly on units units with motor-driven motor-driven dampers) • Fan Off Off Delay: Delay: Fan shutdown shutdown delay This screen is used to set: • T+H Al. Delay’: Delay in signaling signaling room alarms when starting starting the unit and in normal operation • Wrong Phases Sequence or Phase Loss: Minimum Minimum unit Off Off time if the alarm is activated This screen enables setting the Min. OFF Time of the electric heaters after activation of the “Heaters Overheating” alarm.

34


This screen is used to change the access passwords for the: • Settings Settings (setti (settings ngs passw password) ord) • Configura Configuration tion (configura (configuration tionss or service service password) password) Since access to the “Hardware Menu” is denied unless the corresponding password is known, known, the new password should should be written down before before changing the old one. This screen is used to set: • Anti-Hunting Time Constant: Control time constant constant • Delay Com. Error: Error: Delay for the communication communication error between the unit and the Master Control • Start Com. Trans.: Initial communication transient The last line indicates the status of communication between the unit and the Master Control.

Sensors settings This screen adjusts control of the temperature sensors (“Room Temp.”, “Ext. Air Temp.”, “Delivery Temp.”, “CW Closed And Hot Water”, “Room Humidity”) in case a difference between the measured value of the sensor and the effective value is detected when measured with a precision instrument. The adjustments can be done at intervals of 0.1 °C (.18°F) and the maximum adjustment possible is between -9.9°C (-17.82°F) and +9.9 °C (+17.82°F). The Read value is the measurement transmitted by the sensor already corrected. The adjustment (“Adjustment”) is the quantity that needs to be added or subtracted to obtain the correct value when measured with a precision instrument.

Alarm reset mode This screen and the following are used to set the alarm resets to manual or automatic.


35

Memory operations This screen manages the data contained in the microprocessor Flash EPROM. • Program Setup: Operation that that is carried carried out the event of Flash EPROM substitution (it can be useful if data is ‘damaged’ as it is possible to clean the memory–including memory–including data relative to the unit HARDWARE HARDWARE configuration, where all the setpoint values reset automatically) . After this operation it is necessary to re-configure the control and set the setpoint (when different from those of the default).

Warning: When modified, a parameter of the configuration (and Flash EPROM substitution) substitution) is necessary to empty the RAM memory by cutting off the power to the control for a few seconds. • Alarm Page Clear-Up: Clear-Up: Historical Historical alarm that cancels cancels the last 100 100 saved alarm events events • Hardware Setup: Automatic Automatic identification identification of the devices connected to to the control (this (this operation is useful when an optional device must be connected to the board, when substituting a sensor or when the temperature sensor display shows a “NC” reading) .

EXV valve settings This screen and the following are only displayed if the electronic expansion valve is configured, and are used to access the valve operating settings.

Main settings This screen enables choosing the electronic thermostatic different for the two refrigerating circuits: • Valve Type: Type: Model of electronic valve used • Refrigeran Refrigerant: t: Type Type of refriger refrigerant ant gas used used This screen is used to set: • Low Super Heat Heat (SH) Protection: Protection: Activates the Low SH protection that that quickly acts by closing the valve in case of too low a SH temperature (this avoids liquid returning to compressor) • Maximum Operating Operating Pressure Pressure (MOP) Protection: Activates the MOP protection that moderately moderately closes closes the EEV valve valve to limit the the evaporator evaporator temperature (this prevents the compressor from stopping from thermal protection) • MOP Set: MOP activatio activation n set set • Low Operating Operating Pressure (LOP) Protection: Protection: Activates Activates the LOP protection protection that quickly quickly acts by opening the valve when the evaporator temperature is too low (this avoids the compressor stopping from low pressure) • LOP Set: Set: LOP LOP activat activation ion set set

36


This screen is used to set: • Range Begin: Start scale for the evaporator evaporator pressure transducer reading reading • Range Ending: Ending: End scale scale for the evaporator pressure pressure transducer reading • Read Value: Value: Value Value read, i.e. the measurement sent by the the pressure transducer • Cond.Press.Range: Enabling condenser pressure reading • Range Begin: Start scale for the condenser condenser pressure transducer reading reading • Range Ending: Ending: End scale for the the condenser pressure transducer transducer reading • Read Value: Value: Value Value read, i.e. the measurement sent by the the pressure transducer If the measured value of the evaporator pressure sensor does not match the effective value when measured with a precision instrument, the pressure reading can be adjusted using the Press.Offset parameter. The The maximum adjustment possible is between between -6.9 bar (-99.9 psi) and and 6.9 bar (99.9 psi). psi). The read value is the measurement transmitted by the pressure evaporator sensor, including the correction factor. If the measured value of the evaporator temperature sensor does not match the effective value when measured with a precision instrument, the temperature reading can be adjusted using the Temp.Offset parameter. parameter. The maximum adjustment possible possible is between -9.9°C -9.9°C (-17.82°F) and +9.9 °C (+17.82°F). The read value is the measurement transmitted by the temperature evaporator sensor, including including the correction factor. This screen corrects the pressure of the condensing sensor reading. If the measured value of the sensor does not match the effective value when measured with a precision instrument, the sensor can be adjusted using the Press.Offset parameter parameter.. The maximum adjustment possible is between -6.9 bar (-99.9 psi) and 6.9 bar (99.9 (99.9 psi). The read value is the measurement measurement transmitted by the pressure evaporator sensor including the correction factor. This screen is used to set: • Low Superheat: Superheat: Low superheat alarm alarm activation activation delay time • High Suct. Temp.: High suction temperature alarm activation delay delay time • LOP Failure: Low operating operating pressure alarm activation delay time • MOP Failure: Maximum operating operating pressure alarm activation delay time • Press. Probe Failure After Compr. Compr. ON: Pressure probe probe disconnected or not working working alarm activation delay time after the compressor starts • Press.Probe Failure At Normal Work: Work: Pressure probe disconnected or not not working alarm activation delay time in normal operation


37

This screen is used to manually set the opening steps for the electronic expansion valve.

This screen is used to set the closing steps for the electronic expansion valve when there is no cooling request.

Advanced settings This screen enables setting the SuperHeat set for Individual Circuit: Overheating Setpoint.

This screen is used to set for Circuit 1: • Dead Dead Zone: Zone: Dead Dead band band • Prop.Gain Prop.Gain:: Proporti Proportional onal gain • Integral Integral Time: Time: Integ Integral ral time time This screen is used to set: • Derivat. Derivat. Time: Time: Deriva Derivative tive time time

This screen is used to set for Circuit 2: • Dead Dead Zone: Zone: Dead Dead band band • Prop.Gain Prop.Gain:: Proporti Proportional onal gain • Integral Integral Time: Time: Integ Integral ral time time This screen is used to set: • Derivat. Derivat. Time: Time: deriva derivative tive time

This screen is used to set for an individual circuit: • Max Suct. Temp.: Temp.: Maximum Maximum suction suction tempera temperature ture • Circ./EEV Ratio: Ratio: Ratio expressed in percentage between between the maximum cooling capacity of the circuit regulated by the EVDriver and that obtainable with maximum opening of the expansion valve in the same operational conditions

38


This screen is used to set: • Low Limit: Limit: Low Low superhea superheatt minimum minimum limit limit

This screen is used to set for single circuit: • Integral Integral Time: Time: Integral Integral time time to low superhe superheat at

This screen is used to set: • Start-up delay: Maximum operating pressure protection delay time when starting

This screen is used to set: • Integral Time: Time: Integral time for maximum operating operating protection protection

This screen is used to set: • Integral Time: Time: Integral time for minimum operating operating protection protection

This screen is used to set: • Dehum.SH Set: Superheat setpoint setpoint in the dehumidification dehumidification phase phase • LOP Limit: Minimum operating operating pressure limit limit in the the dehumidification dehumidification phase This screen enables setting the operation parameters of the expansion valve for Circuit 1: • Enable: Enable: Enables Enables the the regulating regulating mode • Time:s: Maximum activation activation time of of the operation operation parameters of the expansion valve after the staging ON of the compressor • SuperHeat SuperHeat Set: Set: Superhea Superheating ting setpoi setpoint nt • Dead Zone: Zone: Dead Dead adjust adjustment ment zone zone • Prop. Gain: Gain: Proporti Proportional onal regulat regulation ion gain gain • Integral Integral Time: Time: Integral Integral regula regulation tion time time • Derivat.T Derivat.Time: ime: Derivati Derivative ve regulation regulation time time


39

This screen enables setting the operation parameters of the expansion valve for Circuit 2.

Manual control During normal operation, all the components installed on the unit are managed automatically. To To assist maintenance and checks or in cases of emergency, the individual components can be activated manually and independently of the control process: • Unit Unit fan fan (Unit (Unit Start-Up) Start-Up ) • Compre Compresso ssorr 1/2/3 1/2/3/4 /4 (Compressor (Compressor 1/2/3/4) 1/2/3/4 ) • (On CW units) units) analog analog output output 0/1 (Y0/Y1Ramp% (Y0/Y1Ramp%)) • Dehumidif Dehumidificati ication on functi function on ( Dehumidification Dehumidification)) • First electric electric heater heater stage stage ( Reheating Reheating 1) 1) • Second Second electri electricc heater heater stage stage ( Reheating Reheating 2) 2) • 0/1 analog analog outpu outputt on DX, TC, TC, ES units units (Y0/Y1Ramp ( Y0/Y1Ramp))

Operating modes To change the operating mode of a component, simply move the cursor to the corresponding line, press the UP or DOWN button to change from automatic (“No”) to manual (“Yes”) (“Yes”) or vice-versa, and confirm by pressing the ENTER button.

The next screen can also be used to set, as a percentage, the opening of the devices connected to analog outputs Y1, Y2 and Y3.

When activating one or more components manually, the STATUS screen will show the

40

icon.


Updating the Program The following systems can be used to update and acquire the firmware and the logs on the pCO controllers: • Winl inload • SmartKey SmartKey progra programming mming button button

Winload On all pCO system controllers the firmware can be updated using a PC. For this purpose, Schneider Electric SAS provides the WinLoad32.exe WinLoad32.exe program and a serial converter with USB-RS485 output to connect to the pCO via the telephone connector. connector. The special driver, supplied by Schneider Electric SAS, must be installed on the PC. The WinLoad32.exe WinLoad32.exe program is installed together with the pCO Manager program. The installation includes, in addition to WinLoad32.exe, the user manual and the driver for the USB-RS485 converter. converter.

SmartKey The SmartKey programming button can also be used to update the controller firmware, with the sole exception of the Boot, which is not loaded by the SmartKey. In addition, the key can clone the contents of a pCO and a nd then copy these to another pCO that is identical to the first, via the telephone connector on the terminals (the pLAN must be disconnected). The key can also copy the data logged by a series of pCO devices to a PC. On the PC, using the SmartKey Programmer, the key can be configured to run certain operations, such as acquire logs, program applications, and program the BIOS. The following are some images showing examples of downloading the program to the pCO control board:

Inside the kit is a CD and a manual with step-by-step explanations of how to best use these accessories. The program files will be sent by e-mail or CD, indicating the name of the application.


41

Alarms Active alarms By pressing the ALARM button, the alarm will be silenced and a description of the alarm will be displayed. If the cause of the alarm has been eliminated, the last alarm message can be reset by pressing the ALARM button for several seconds (the red light on the button will turn off immediately). If the cause of the alarm has not been eliminated, the alarm buzzer will be activated again.

Alarm history In order to be able to reconstruct the alarm history sequence, the microprocessor holds 100 alarm events in its memory. All of the set alarms can be read in series by entering the status screens by pressing the UP and DOWN buttons and choosing the “Alarm History” option (if there is a clock card). The time and date will also be recorded for each alarm event. The alarms activated when the counter threshold is exceeded are not recorded and therefore cannot be read.

Alarm events All of the possible alarm messages that can be displayed on the user terminal are shown below. For active alarms (not recorded in the alarm history sequence), some possible suggestions will appear for solving the problem in the last two lines of the display: • Incorrect Phase Sequence: The Scroll compressor compressor must rotate in the correct direction, otherwise there will be a loss of efficiency. efficiency. In single units with a three-phase power supply it is possible that the phase sequence of the network forces a rotational direction that is different to that which has been planned; in this case, as soon as the unit is connected to the power supply, supply, the microprocessor immediately enters into an alarm state blocking any other type of operation.If this occurs, disconnect the power supply and invert the two phases of the power supply. supply. • Power Supply Return Signal: When the power supply is restored following a break in the power supply, the control records the screen, shown here in the alarm history sequence.

42


Exceeding temperature or humidity limits These are alarms that are activated when the set temperature/humidity limits are exceeded. • Signal only: Can be delayed delayed during the unit start-up start-up phase (the default default delay is 15 minutes) minutes)

Optional sensor or digital input alarms These alarms are connected to the optional sensors and/or the configured digital inputs (see the Hardware Settings screen). Signal only: For Uniflair Cooling Units (frame sizes 3-6).

Activated by the Smoke / Fire sensors (always causes the unit to switch off).

Activated by the leak detection control module or from the condensate pump alarm contact (only causes the unit to switch off if it has been chosen as a second level alarm, but it does not activate the stand-by unit).

Activated by a digital input configured as “Alarm Signalling” (ID2, ID4, ID6).


43

Unit function alarms These are alarms connected to the unit components and which are caused by the intervention of a protection device: Fan alarm: Activated by the differential air flow pressure switch (FS) and causes all of the devices to switch off – compressors, electrical heaters, humidifier, humidifier, fans).

Activated by the differential high air flow (FSA): Causes all of the devices to switch off – compressors, electrical heaters, humidifier, and fans.

Activated by the differential dirty filter pressure switch (PFS): Only causes an alarm signal, without unit operation being affected (indicates that the air filter needs to be cleaned or replaced).

Alarm signal activated by from the overheat switch (TSR): Ca uses the electrical heaters to switch off.

DX, ES, TC units only: Causes the compressors to switch off on the circuit indicated (1 or 2); check the refrigerant circuit and/or refrigerant charge and high pressure switch).

DX, ES, TC units only: Causes the compressors to switch off on the circuit indicated (1 or 2); check the refrigerant circuit and/or refrigerant charge and high pressure switch. This alarm also specifies the number of the circuit).

CW units only: Activated by the CW flow switch which signals a lack of water within the hydraulic circuit).

44


CW units only (signal only): Activated by the CW temperature sensor when the setpoint value is not reached within 15 minutes of the dehumidification dehumidification request.

CW units only (signal only): Activated by the CW temperature sensor when the high temperature limit is exceeded.

TC units only: Causes the changeover from CW operation to DX (it is also displayed when the ambient temperature sensor detects that the limit set has been exceeded for the first time. time.

Activated on a loss in communication between the UpCO1 control board and the UpCOE expansion board in the Twin-Cool Water-Cool model.

Activated when the controller cannot automatically detect the mains frequency.

Electronic expansion valve alarms (DX, TC, ES units only) These alarms which are connected to the driver of the EVD400 electronic expansion valve, causing the compressor/s to switch off: Activated when there is low evaporator pressure, or rather, when the LOP is lower than the threshold which has been set, for a period which is longer than the Alarms Delay LOP. LOP. This alarm also specifies the number of the circuit. Activated when there is excessive evaporator pressure, or rather, when the MOP is higher than the threshold which has been set, for a period longer than the Alarms Delay MOP. MOP. This alarm also specifies the number of the circuit.


45

Activated following an error in the signal given by the low pressure transducer or a lack of working pressure caused by the compressors not being switched on.

Activated following an error in the signal given by the NTC low pressure temperature sensor for the superheating reading. This alarm also specifies the number of the circuit.

Activated following an error in the EEPROM memory of the driver. This alarm also specifies the number of the circuit.

Activated when there is low superheating, for a period which is longer than the Alarms Delay Low SH. This alarm also specifies the number of the circuit.

Activated following an error in the LAN connection between the EVD400 driver and the pCO1 control board. This alarm also specifies the number of the circuit.

Activated following a temperature measurement taken by the EVD400 sensor, which is higher than the threshold value set in the High SH. This alarm also specifies the number of the circuit.

This is only displayed in the alarm history when the driver is without power for more than 5 seconds when the compressor is operating. This alarm also specifies the number of the circuit.

Sensor alarms These are activated when there is a malfunction of the sensors, or they have been incorrectly connected to the main board:

Note: If one of these alarms is activated, check the exact configuration set, that the sensor is present, present, and that the connections have been made and are operating correctly.

46


Activated following an error signal from the sensor which is connected, disabling the unit operation linked with the reading.

Causes the compressors and electric heaters to switch off, keeping only the fans switched on.

Disables the free-cooling operation control (only ES units).

Disables the re-heat electric heaters.

Disables the hot water re-heat electric heaters (optional).

Signal only.

Signal only.

Disables humidification / dehumidification operation.

Service note These are signalling alarms which are activated when the operating hours of the component are exceeded.

Note: This type of alarm, which continues until the counter is reset, is not recorded in the historical alarm sequence. Signal only: This may concern the air filters, the unit, the compressors, the electric heaters and the humidifier. To To reset the alarm it is necessary to zero the counter.


47

The screen for setting the alarm thresholds and zero the counter can be found in the “Parameters Menu.” If the threshold is set at 0 hours, the alarm will not be activated.

LAN interrupted alarm Indicates problems of communication between units in the LAN and specifies which units are not connected. This may be due to a break in the power supply, supply, a malfunction in the the serial card or an interruption in in the electrical connections between the units. The alarm appears on the units with lower addresses in the network, both up and downstream of the interruption.

System alarms Indicates a writing error in the EEPROM memory, probably due to the cancelling/writing cancelling/writing cycle being exceeded. The board needs to be replaced.

Access alarms This refers to an attempt at accessing the setting or configuration screens by entering the password incorrectly 3 consecutive times. To reset the alarm, carry out the following procedure: 1. Press the the PROGRAM PROGRAM button button and and select select “Service “Service Menu.” Menu.” 2. Enter Enter the passwor password d and press press the the ENTER ENTER button. button. 3. Exit by pressing the the ESCAPE button button until until the main main screen is is reached. 4. Press the ALARM button again again to reset the the cycle and then then keep it pressed pressed for another 3 seconds to reset the alarm completely. completely.

Remote alarm signalling For remote signalling of the alarm status, the following voltage-free dry contacts are available on the microprocessor control board: • Type ype A alar alarm m • Type ype B ala alarm rm If there are several units, the wiring of the dry contacts must be carried out independently for each unit. To select the type A or B and the state of the contact, select the “ Parameters Menu” and choose the Alarm Contact option.

48


Default Values CONFIGURATION PARAMETER DESCRIPTION

NUMERICAL PARAMETERS DEF.

CONTROL PARAMETERS

PARAMETER DESCRIPTION

VAL.

DEF.

MIN.

MAX.

Setpoint

Heating

No

Cooling setpoint

Hot water coil

No

with Room Temperature

°C

23.0

17.0

35.0

Hot gas coil

No

Cooling Propor. Band

°C

1.5

0.5

9.9

External Humidifier (On/Off)

No

2nd cooling setpoint

°C

17.5

17

35

External Humidifier (0-10V)

No

Cooling setpoint

Delivery sensor

No

with Delivery Temperature

°C

17.0

17.0

35.0

2nd Cooling SetP. of the remote

No

Cooling Propor. Band

°C

15.0

0.5

18.0

Flooding

No

Heating setpoint

°C

23.0

12.0

30.0

Smoke/Fire

No

Heating Propor. Band

°C

1.5

0.5

9.9

External sensor

No

Dehumidifier setpoint

rH %

55

20

90

No

Dehumidifier Propor. Band

rH %

05

03

15

Disable BP transitory start limit

No

Humidifier setpoint

rH %

45

20

90

Off unit with flood alarm

No

Humidifier Propor. Band

rH %

05

03

20

Off water valve with flood alarm

No

Delivery T. Set Limit

°C

14.0

10.0

25.0

Remote On/Off of via digital input

No

SETPOINT COMPENSATION

Remote On/Off of via serial

No

P1:Delivery SetP.

°C

17.0

14.0

35.0

Motorized damper

No

P1:Room Temp.

°C

22.0

17.0

35.0

Buzzer enabled

Ye s

P2: Delivery SetP.

°C

18.0

14.0

35.0

Dehumidification

Yes

P2: Room Temp.

°C

20.0

17.0

35.0

Humidification

No

SET ALARMS

SetP. change of the Dehum. CW

No

High Room Temp.

°C

30.0

20.0

40.0

Enabled High T.Delivery alarm

No

Low Room Temp.

°C

10.0

0.0

32.0

SetP. compen. of the CW working

Ye s

High Room Humidity

rH %

80

40

99

Enabled setback mode

No

Low Room Humidity

rH %

30

0

65

Enabled Fan Cyclical Start

No

High Delivery Temp.

°C

23.0

10.0

40.0

Enabled ON/OFF cycle

No

SETBACK MODE Min. Room Temp.

°C

16.0

5.0

24.0

Max. Room Temp

°C

28.0

20.0

35.0

Min. Room Humidity

rH %

35

20

60

AFPS

“A” AND “B” ALARMS TYPES Loss of Air Flow Clogged Filters

A A

Heaters Overheating

A

Max. Room Humidity

rH %

75

50

90

EEPROM Failure

A

Fan cyclical start time

min

30

15

99

Wrong Password

A

TIMER THRESHOLD

High Air Flow

A

High Cond.Pressure

A

Timer threshold h 0 0 32000 CHANGE PASSWORD *(password found in the envelope enclosed with unit)

Low Evap.Pressure

A

Password Settings

n°

xxxxx

00000

32000

EXV Valve Failure

A

Password Service

n°

xxxxx

00000

32000

High Room Temp.

A

LAN SETTINGS

Low Room Temp.

A

Lan units number

n°

0

2

10

High Room Humidity

A

Cycle time

h

168

1

98

Low Room Humidity

A

Number of Stand-by units

n°

1

1

2


49

CONFIGURATION

NUMERICALS PARAMETERS


DEF.


VAL.

DEF.

MIN.

MAX.

s

600

0

2000

min

1

0

30

High Water Temp. (C1/C2)

A

DELAY SETTINGS

Low Air Pressure

A

Integral Time

A

Anti-hunting time time constant

CW Dehumid. Failure (C1/C2)

A

Unit Start Up Delay At Power On

s

0

0

300

D.C.: Expansion Board

A

Operation

s

60

15

200

Supply Frequency

A

Fan Off delay

s

10

10

60

Wrong Phases Seq.

A

Temp/Hum.Alarms Delay

Room Temp.Sensor

A

After Power ON

min

10

0

99

Room Humid.Sensor

A

Normal Working

s

60

0

999

Delivery Temp. Sensor

A

Wrong Phases Sequence Min.OFF Time

s

60

5

999

Outdoor temp. Sensor

A

OTHER RESOURCES

Water IN Temp. Sensor (C1/C2)

A

Motorized damper time

s

120

20

300

Water OUT Temp. Sensor (C1/C2)

A

Backlight Time

s

300

30

999

Hot Water Temp. Sensor

A

Buzzer On Time

min

5

1

999

Air Pressure Sensor Sensor

A

SENSOR ADJUSTMENT

Loss of Water Flow

A

Adjustment

°C

0.0

-9.9

+9.9

Smoke/Fire

A

COMPRESSOR

Flooding

A

Transitory limit BP

bar

0.2

0.1

5.0

Local Network

A

BP Alarm normal limit

bar

2.0

0.9

5.0

Humidifier Failure

A

BP Alarm differential

bar

1.3

0.1

5.0

External Sensors

A

BP Alarm after compress. ON

s

180

30

240

High Delivery Temp

A

BP Alarm at normal work

s

6

2

10

Unit Run Hours

A

Minimum OFF compr. time

s

60

60

600

Filter Run Hours

A

Minimum OFF compr. time

s

60

0

999

Compress.Run Hours

A

Minimum time 2 starting

s

360

360

600

El.Heaters Run Hours

A

AFPS

Humidif.Run Hours

A

Air transducer press Range Begin.

Pa

0

-6250

6250

Alarm By ID2 ID2

A

Air trisector press Range End.

Pa

100

0

6250

Alarm By ID4 ID4

A A

Delta Input Filter Filter

Pa

4.0

-9.9

+9.9

Time Input Filter

s

1

0

99

Min. speed fan

%

55

40

100

AFPS: Expansion Expansion Board

Alarm By ID6 STAND-BY ROTAT. ALARMS Loss of Air Flow

Yes

Max. speed fan

%

100

40

100

Clogged Filters

No

Setpoint

Pa

20.0

0

6250

Heaters Overheating

Yes

Dead Band

Pa

0.0

0

6250

EEPROM Failure

Yes

Regul. band

Pa

160.0

0

9999

Wrong Password

No

Integral time

s

40

0

999

High Air Flow

Yes

Derivat. Time

s

0

0

999

High Cond.Pressure

Yes

Alarm level

Pa

15.0

0

6250

Low Evap.Pressure

Yes

Alarm delay

s

60

0

999

EXV Valve Failure

No

ENERGY SAVING SETTINGS

High Room Temp.

No

Energy Saving Temp.

°C

8.0

5.0

24.0

Low Room Temp.

No

Summer Temp.

°C

28.0

15.0

40.0

High Room Humidity

No

Active radcooler setpoint

°C

28.0

15.0

40.0

Low Room Humidity

No

ON Radcooler fan at E.S.

°C

8.0

1.0

15.0


No

E.S. setpoint (Room T.-Water T.)

°C

6.0

1.0

15.0

50


CONFIGURATION PARAMETER DESCRIPTION Low Air Pressure

NUMERICALS PARAMETERS DEF.


VAL.

DEF.

MIN.

MAX.

No

TWIN-COOL SETTINGS

No

CW enable Setpoint

°C

7.0

7.0

25.0

Room Temp.Sensor

Yes

CW deactivation Setpoint

°C

3.0

0.0

9.9

Humidity Sensor

Yes

COOLING WATER SETTINGS

Deliv.Temp.Sensor

No

Dehumidification setpoint

°C

7.0

5.0

20.0

Outdoor Temp.Sensor

No

High water temp. alarm (C1/C2)

°C

15.0

5.0

80.0

Water In Temp.Sens. (C1/C2)

No

Open valve at alarm (C1/C2)

%

0

0

50

Water Out Temp.Sens. (C1/C2)

No

P1 Dual Coil

%

100

0

100

Hot Water Temp.Sens.

No

P2 Dual Coil

%

0

0

100

Air Pressure Sensor

No

Hot Water Coil setpoint setpoint

°C

40

25

60

Loss of Water Flow

No

EXV VALVE

Flooding

No

MOP Set

°C

14.0

-50.0

70.0

External Sensors

No

LOP set

°C

02.0

-50.0

70.0

Humidifier Failure

Yes

Pressure Probe Range Begin.

bar

-01.0

-99

999

High Delivery Temp.

No

Pressure Probe Range Ending

bar

09.1

0

999

CW Dehumid.Failure (C1/C2)

No

Pressure Probe Offset

bar

0.0

-9.9

+9.9

D.C.: Expansion Board

No

Temperature Probe Offset

°C

0.0

-9.9

+9.9

Alarm By ID2 ID2

No

Low SH

s

120

0

600

Alarm By ID4 ID4

No

High Suction Temp. Temp.

s

0

0

600

Alarm By ID6 ID6

No

LOP Failure

s

0

0

600

MOP Failure

s

0

0

600

AFPS: Expansion Expansion Board

ALARMS RESET MODE High Room Temp.

Press. Probe Failure after comp. ON

s

20

0

99

Low Room Temp.

Auto Auto

Press. Probe Failure at norm. work

s

10

0

99

High Room Humidity

Auto

Manual open Step

n°

265

0

2625

Low Room Humidity

Auto

Closing Backsteps

n°

5

0

100


Auto

Superheat set

°C

6.0

2.0

40.0

Loss of Air Flow

Man.

Superheat set Auto

°C

6.0

-

-

High Air Flow

Man.

Dead Zone

°C

0.0

0

99

Low Evap.Pressure

Auto

Dead Zone Auto

°C

0.0

-

-

EXV Valve Failure

Auto

Prop. Gaing.

3.0

0

999

External Sensors

Man.

Prop. Gaing. Auto

2.6

-

-

Loss of Water Flow

Man.

Integral Time

s

30

0

999

Humidifier Failure

Man.

Integral Time Auto

s

35

-

-

Smoke-Fire

Derivat. Time

s

1.5

0

999

Alarm By ID2 ID2

Man. Man.

Derivat. Time Auto

s

1.5

-

-

Alarm By ID4 ID4

Man.

Max Suction Temp.

°C

30.0

0

999

Alarm By ID6 ID6

Man.

Max Suction Temp. Auto

°C

20.0

-

-

High Delivery Temp.

Auto

Circ/EEV Ratio.

%

50

0

100

Low Air Pressure

Auto

Low Superheat protection limit

°C

0.5

-0.4

21.0

Auto

°C

2.0

-

-

Auto

Low Superheat protection protection limit Auto Auto Low Superheat protection Integral

s

15.0

0

300

Auto

Low Superheat protec. Integ. Time

s

0.8

-

-

MOP Protection Start-up delay

s

30

0

600

MOP Protection Start-up delay Auto

s

30

-

-

MOP Protection Integral Time

s

3.5

0

999

MOP Protection Integral Time Auto

s

2.5

-

-

AFPS: Expansion Expansion Board High Wat.T.to Deh. (C1/C2) Dual Coil: Exp.Board.


51

CONFIGURATION

NUMERICALS PARMETERS


DEF.

SUPERVISION Serial Address

01

Serial Speed (1200-19200)

1200

Protocol

Std


VAL.

DEF.

MIN.

MAX.

LOP Protection Integral Time

s

15.0

0

600

LOP Protection Integral Time Auto

s

1.5

-

-

Dehumid. SH Set

°C

20.0

2.0

40.0

Dehumid. LOP limit

°C

2.0

-50.0

70.0

TWIN-COOL CALIBRATION Enabled CW working Also On DX Alarm Alarm

Yes

Only By ID Contact

No

Only By Serial

No

COOLING WATER CALIBRATION Sensor of regulation

RoomT.

Valve Off of the alarm High water Temp.

Yes

Enabled Change Set Chiller of Dehumi.

No

EXV VALVE Valve type Refrigerant Type

E2V R410A

Low SH Protection

Ye s

MOP Protection

Ye s

LOP Protection

Ye s

Manual open Step

No

LOW PRESSURE SETTINGS WITH REFRIGERANT TYPE R410A

MIN

MAX

Transitory limit

bar

0.5

0.1

5.0

Normal limit

bar

4.6

0.9

5.0

bar

2.0

0.1

5.0

Alarm delay after after compr. ON

s

180

30

240

Alarm delay normal normal working

s

06

02

10

Alarm differential

LOW PRESSURE TRANSDUCER RANGE Range Begin:

bar

-0.4

-9.9

99.9

Range Ending:

bar

34.3

0.0

99.9

52


Ambient Temperature Regulation Diagrams CW Models

DX Models


53

TC Models

ES Models

54


Ambient Humidity Regulation Diagram


55

Local Network Overview • Several air conditioners conditioners installed installed in the same same room connected in parallel in in the same system system can be managed by connecting connecting them to a local network. • The number of connected connected units depends depends on the program program managing the network, network, stored in the Flash Eprom memory. • Units in a network can be be connected at a max. max. of 500 meters (1640 ft). • All the units connected connected to the network must must have the same program version version on the flash memory on the board. • A terminal terminal can be configu configured red as “private” “private” or “shared “shared”: ”: – Private terminal shows shows the status of the single single unit connected to it by a telephone cable. – Shared terminal shows the status of all the units units connected to the network. network. • Each board can “talk” to 3 terminals at the most; there there are usually no more than two in normal operating conditions: conditions: one installed in the unit and one possibly in a remote location. • To communicate on the local network, the units must must be “configured” so that that each of them can convey the information necessary to operate properly. properly. To achieve this, the separate units must first be numbered progressively progressively (1,2,3,...10) and then the the various terminals and LAN LAN boards correctly addressed to them. The electrical connections must also be made, step by step, as described in the following section.

Note: Alarm signals always have priority over the terminal, even if the parameters of another unit are being viewed when the alarm is triggered.

56


Common Network Connections Up to 10 units connected to the network with a single terminal

In this configuration, should power fail in the first unit, the terminal would close down. It would therefore not be possible to read any information regarding the units in the network. However, the other units in the network would continue to operate normally.

Up to 10 units each with its own terminal

Up to 10 units with a single shared remote terminal


57

pCO Boards Connections In the figure below, a simple parallel connection is shown for more than one pCO boards of the pLAN network, using a shielded cable with two twisted pairs and a shield. The cable is connected to all of the boards through the J11 J11 terminal respecting the indicated indicated polarity. polarity.

polarity must be respected: the RX/TX+ RX/TX+ of one one board must must be connected connected Warning: Network polarity to the RX/TX+ of the other boards; the same applies to RX/TX- and the GND.

Board Terminal

Cable Connection

GN D

First couple (both wires)

Rx+ / Tx+

Second couple

Rx- / Tx-

Second couple

The shield should be connected to the ground on the first unit at a metal point using a screw and a washer and the length of the screen should be as short as possible.

58


Remote Terminal Connections Important warnings Electrical connections must be carried out when the unit is switched off and unplugged. The network can be configured differently differently depending on on the maximum distance distance of the board and remote terminal connections; it may be necessary to use a ‘T’ shunt TCONN6J (as shown below) to connect the remote terminal to the main board.

Terminal

Cable AWG24 3x2 Cable operation

Connections

0

Earth (screen)

shielded

1

+ VRL (≈ 30 30 Vcc)

1° twin A

2

Gnd

2° twin A

3

Rx/Tx-

3 ° t wi n A

4

Rx/Tx+

3 ° t wi n B

5

Gnd

2° twin B

6

+ VRL (≈ 30 30 Vcc)

1° twin B

If both of the pin-strip jumpers are between 2 and 3, the passage of the current is interrupted between the connectors that are separated by a dashed line. If power is needed to be supplied to all of the connectors, both of the jumpers must must be between 1 and 2. The 0 terminal is the support terminal, which can be used to connect the screen to the earth of the shielded cable; the “T” derivative may however be connected to a metallic part of the unit, already connected to the earth.


59

Maximum distances between the terminal and the board For local terminals the connection with the base board is already made with a 3 pair cable with a 6 way telephone connector. connector. The length of this cable should not be longer than 3 meters. The remote terminals should be connected to the base board with a telephone cable such as that which has been described in point 1 for a distance of up to 50 meters. For connections of up to 6 meters the cable can be supplied, on request, by Schneider Electric. Cable length

Code

m 1.5

Meco 110X1A

m 3.0

Meco 130X1A

m 6.0

Meco 140X1A

For distances up to a maximum of 200 meters, a screened cable must be used (a twisted pair cable with a shield AWG24, AWG24, resistance < 80ohm/M). The cable can be a three or two twisted pair depending on if it has to transfer power to the terminals.

LAN and Supervision Connection For connection to both LAN and supervision networks, it is advisable to use a cable that has the following specifications: • Multi-coupled cables cables with internal flexible flexible conductors made from from tin plated copper (AWG (AWG 22, insulated with polypropylene, singularly coupled, screened with aluminium/polyester tape + continuity wire in tin plated copper (AWG (AWG 24/7) connected on a common axis to reduce the diameter and protected by an external sheath in PVC.

Technical features f eatures Article

Ø External om.

Conduct. resist. max.

Impe Impede denc ncee

Capa apacity city (pF (pF/m)

Operating voltage

Operating temperature

(mm)

(ohm/km)

(ohm)

C1

C2

(V)

(°C)

4.50

54.8

50

108

198

300

-10/+60

Y08723 2x2xAWG22/7

60


Remote Terminal from the Board Connection In this configuration example , it is necessary to: • Use the two TCONN6J 'T' joints (one installed installed on the unit and one near the remote terminal). • Use a three pair screened screened cable for two, two, so that the remote terminal is also also supplied by the board of unit 1 to which it is connected by the TCONN6J. • Place the ferrite near the terminal in order to reduce reduce the possibility possibility of electromagnetic electromagnetic disturbances.


61

Terminal and pCO Board Addressing the Local Network Before carrying out the configuration of the addresses, it is advised that the LAN connection between the boards should be checked checked in addition to the the connection with the the remote (or shared terminal) and the the electric supply connections of the unit. It is possible to configure the address of the terminal only after having connected it to the power supply by using the RJ11 telephone connector. To To enter in configuration mode press the UP, UP, DOWN and ENTER buttons at the same time for at least 5 seconds (these buttons are present on all models); the the screen shown below will will be displayed with with a flashing cursor in the left hand top corner: • To modify the address of the the terminal (display address address settings), press the the ENTER button once once and the cursor will move to the address field (nn). • By using the UP and DOWN buttons, buttons, select the desired desired value and press the ENTER ENTER button. If the selected value is different from that previously used, the screen below will appear and the new value will be recorded in the permanent memory of the display. display. If “0” is entered as a value in the nn field, the terminal will communicate with the pCO board using the “point-point” protocol (not pLAN) and the field XX will disappear since it has no meaning.

Assigning the list of private and shared terminals (pCO) If it is necessary to modify the list of terminals associate to each single pCO board, perform the following: 1. Enter in the configuration configuration mode using the UP, UP, DOWN and ENTER buttons buttons as described in the previous section. 2. Press the ENTER ENTER button until until the cursor cursor is positioned positioned in the XX XX field (I/O board board address). 3. Use the UP and DOWN buttons buttons to choose the address of the desired pCO board. The values that can be selected will be only those of the pCO boards which are effectively on line. If the pLAN network is not not working correctly, correctly, or if there are no pCO boards connected, connected, it will not be be possible to modify the field and only “—” will be shown. Pressing the button again will display the sequence of screens. The ENTER button moves the cursor from one field to another and the UP and DOWN buttons change the value of the chosen field. The Pxx field: This shows the address of the selected board; in the example in the figure below, below, P01 has been selected. To To exit from the configuration configuration procedure and record the the data, select the “OK?” field and and set it to YES and then press the ENTER button.

62


The fields in the “Adr” column represent the addresses of the terminals associated with the pCO board, address 11 for the local terminal and 32 for the shared terminal, while the column Priv/Shared indicates the type of terminal.

Warning: The terminals of the UG40 line cannot be configured as “Sp” (shared printer) as they do not have a printer output. Note: If the terminal remains inactive for more than 30 seconds (no button has been pressed) it exits automatically from the configuration procedure without recording any eventual changes.

Assigning the list of private and shared terminals


63

pCO board LAN address The pCO board LAN address is selected by: 1. Disconne Disconnect ct the power power supply supply to the pCO pCO board. board. 2. Disconne Disconnect ct the J11 J11 terminal terminal clamps (Rx/Tx(Rx/Tx-,, Rx/Tx+, Rx/Tx+, GND). 3. Connect Connect a user terminal terminal with with the address address = 0 to the the board of unit unit 1. 4. Reconnect the power supply and press the ALARM ALARM and UP buttons buttons at the the same time until the following screen appears:

5. Press the ENTER ENTER button to to accept the value value of the address address of the proposed proposed board on the display or the UP and DOWN buttons to modify it: set the "pLAN address: 1" on unit 1

Note: If a button is not pressed within 15 seconds the screen will disappear from the display and it will be necessary to repeat the procedure described in step 1).

6. Press Press the the ENT ENTER ER butto button. n. 7. Disconne Disconnect ct the the power power suppl supply y 8. Repeat the procedure in steps 1 through 6 for the other units in the network.

9. Reposition the J11 J11 terminal clamps (Rx/Tx-, (Rx/Tx-, Rx/Tx+, GND) GND) on the board.

Unit address table Unit

64

Address

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10


Terminal and pCO board addresses table Terminal Address

pCO Board Address

Terminal Address

pCO Board Address

11

1

16

6

12

2

17

7

13

3

18

8

14

4

19

9

15

5

20

10

Termi ermina nall Add Addre ress ss 32

pCO pCO Boa Board rd Addr Addres esss All addresses

In the following figure, a network of 4 units, units , each with its own local user terminal and a shared 32 remote user terminal displaying the information of unit 1. To move from showing the display of unit 1 to that of unit 2, press the ESCAPE and DOWN buttons at the same time and in succession for the other units.


65

LAN Parameter Configuration After having carried out the configuration of the remote and shared user terminals, the operating parameters of the LAN network network must be set. This must only only be carried out on the unit unit with the address LAN1, because the information will automatically be passed on to the other units which are connected. The parameters that need to be set are inside the connected units screen; some of the settings that need to be carried out are described below: 1. Set the number number of units units connected connected to the the LAN network. network. 2. Activate Activate the automat automatic ic exchange exchange of the unit in stand-b stand-by y. 3. Set the cycle cycle time to to carry out out the rotation rotation of of the units; units; if the hour hour is set at 000, a simple test will be carried out putting the units in rotation with an interval of 2 minutes. 4. Set the the number number of units units in stand-b stand-by y (max. (max. 2). 5. If the last line is set to “Yes,” “Yes,” it enables the stand-by stand-by unit to be switched switched on in the event of an alarm. All of these settings are automatically passed on to the other connected units. The screen shown here is shown only if the local network has been configured, allowing management of the unit operation with the average temperature value measured from the active units connected in the local network or with the local value measured by the sensor present inside the unit. • Method Local Value: Control of the unit is entrusted to to the temperature values read by the sensor present on the air conditioner

or

• Method: Average Average Value: Value: Control of the unit is entrusted entrusted to the average temperature read by the sensor present on the active units connected in the local network (if the difference between the average value and the sensor reading itself is more than the “Average/Loc.Diff.” “Average/Loc.Diff.” value, the control will automatically move from “Average” “Average” to “Local”) The “Exclude From Rotation” parameter enables excluding the unit from the rotation time management by working in Stand-alone mode. If required, this function must be enabled for individual unit. This setting is not passed on to the other units; it needs to be set individually on each unit. Air pressure control configuration screen If a series of units are connected in the LAN, the fan speed can be modulated based on a local probe reading reading or alternately by calculating calculating the average reading of all the probes connected and configured for each active unit. This setting must be made in the LAN setting screens for each individual unit.

66


Air press. control: • Local value: Fan speed is modulated modulated based on on the pressure value read by the probe installed to the unit only • Mean value: Fan speed is modulated based on the mean pressure pressure value read by the probes on the units that are activated and connected to the local network


67

Displaying the Network from the Terminal From any terminal in the network, the screen << NetSTAT >> will appear when the UP, DOWN and ENTER buttons buttons are are pressed at the same same time for for at least 10 seconds. seconds. The NetST NetSTA AT screen indicates all of the pCO boards with a LAN address and all of the terminals present in the network, including the remote shared terminal, and its relative addresses.

In the example, the result is that the network is composed of 3 LAN boards with the address 1,2,3 and of 4 user terminals with the address 11,12,13 and 32.

68


Maintenance Safety During Maintenance Work All work must be carried out by professionals that have been qualified and trained on Schneider Electric cooling products.

Warning: Disconnect the unit from the power supply before starting any maintenance work.

Quarterly Checks Perform the following checks every three months: • Check the power power supply supply.. • Check Check the the alarm alarm statu status. s. • Check the workin working g temperatu temperatures. res. • Check the correct operation operation of the local/remote local/remote controls. controls. • Check the the air filters, filters, replace replace them if necessary necessary.. • Check the the efficiency efficiency of the the condensate condensate drain. drain. • Verify that the steam cylinder is is clean, replace it if necessary. necessary.

Semi-Annual Checks Perform the following checks every six months: • Check the coolin cooling g coil and clean clean if necessary necessary.. • Check the the operation operation of the the humidifie humidifierr.


69

Annual Checks Perform the following checks every twelve months: • Check for for corrosio corrosion n on hardware hardware and and coils. coils. • Check the hinges hinges and gasket gaskets. s. • Check the cables cables and wiring. wiring. • Tighte Tighten n the termin terminal al blocks. blocks. • Check the safety device settings settings (pressure switches switches and protection devices) devices) and reset if necessary. necessary. • Check the fittings, operation operation and amps of the the fan(s) motor. motor. • Check the regulation devices setting setting and reset if necessary necessary.. • Check the chilled chilled water circuit seal (reseal if necessary) and tighten tighten the unit couplings. • Check the water regulation valve(s) valve(s) setting and and reset if necessary necessary..

Warning: There are moving parts. Do not operate unit with panels removed.

Warning: Risk of electric shock. Disconnect power before servicing unit.

Warning: Emptying the unit is recommended in the event of prolonged inactivity. inactivity.

70


Filters Replacing the filters To replace a filter, open the front panels. For models with rear air intake, use the following figure:

For models with high intake (MOD. TDCV: 3400, 4000, 4300), use the following procedure: 1. Remove Remove the filter filter blocki blocking ng support supports. s. 2. Reposition the the new filters in the unit, checking checking the direction direction of the air flow (noted on the filters). filters).

For other models, use the following f ollowing procedure: 1. Remove Remove the filter filters. s.


71

2. Position the the new filters in in the unit, checking the direction direction of the air flow (noted on the filters). filters).

Actuator and Chilled Water Valve If necessary (in the event of a fault in the actuator or the control system), manually move the valve. There is a manual operation handle on the actuator. actuator. When it is lowered, the motor stops and then the actuator can be operated manually if the handle is turned. The chilled water actuator is the same model as the hot water actuator.

Actuator and Hot Water Valve To manually move the valve turn the control knob clockwise to open and counter clockwise to close.

Alternatively, Alternatively, it is possible to remove the actuator from the valve body and move the valve stem itself.

72


Humidifier The only maintenance required is periodic inspection and cleaning of the steam humidifier components. This should be done at least once a year.

Note: Periodically inspect the feed and drain connections in order to guarantee trouble-free humidifier operation. Limescale deposits can affect humidifier performance. Periodically check for limescale buildup and replace humidifier cylinder when necessary. The frequency of this operation depends on the supply water: the higher the content of salts or impurities, the more frequently the cylinder will need cleaning. Before removing the cylinder for replacement or cleaning it is necessary to c ompletely drain all of the water from the boiler. boiler. To connect the CPY user terminal

DANGER HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Before working on the equipment, turn off all power supplying the equipment and disconnect the power cable. Only trained personnel familiar with the construction construction and operation of the equipment and the electrical hazards involved may make repairs to the equipment. Failure to follow these instructions will result in death or serious injury.

1. Connect Connect the CPY user terminal terminal by followi following ng the substeps: substeps: a. Turn Turn off the the unit, unit, then power power it down. down. b. Using a #2 Phillips Phillips screw driver, driver, remove the Controller Board Access Access panel.

WARNING PRESENCE OF SPINNING FAN BLADES Some units contain fans above the humidifier controller board.

Failure to turn off unit before powering it down may result in damage to the system or injure the user.

c. Power up the unit unit and connect the CPY user terminal terminal to the Humidifier Humidifier Control Board Board port. 2. Press UP and DOWN DOWN together for for 2 seconds (the message ‘dr’ on the display alternating alternating with ‘tot’ indicates the function has been activated). 3. Press UP and DOWN DOWN again for 2 seconds to stop the drain cycle. The drain cycle in any case ends automatically. If the CPY User terminal is not available, connect a jumper wire between terminals M11.3 and M8.1 of CPY board. Remove the jumper wire to stop the drain cycle.


73

To access the cylinder: 1. Completel Completely y drain the water water contained contained in the cylinder cylinder.. 2. Turn the unit off and open the main power disconnecting switch. To turn the unit off, see “Switching Unit On and Off” Off” on page 10. 10 . 3. Open Open and and remove remove the the cover cover.. 4. Remove Remove the steam steam hose hose from from the cylin cylinder der.. 5. Disconnect the electrical connections from the top of the the cylinder. cylinder. 6. Release the cylinder cylinder from the fastening fastening device and and lift it up up to remove it. it. Electrical heaters .

Electrical Heaters Replacing the electrical heaters Lockout/Tagout procedures on the cooling unit before Electrical Hazard: Perform Lockout/Tagout servicing. Failure to remove power before servicing this equipment could result in serious injury or death. The total power of the electrical heaters is divided into different elements. The color of the wires on e ach element has the following meaning: • black wire: wire: low low power current current carryin carrying g capacity capacity • white white wire: high high power current current carrying carrying capacity capacity • red wire: wire: stan standar dard d The wires of each element are connected to the CR1 and CR2 connectors on the electrical panel in such a way as to balance the load across the phases and create three stages of heating (refer to the electric diagram on the side of the unit). Electrical Heaters Safety Thermostats

74

Number of thermostats

2

Fixed set

Set 482°F, 250°C


CW Troubleshooting Troubleshooting Troubleshooting is made easier by the indications on the control panel display. display. If necessary, call Technical Technical Support describing the nature of the fault and its possible cause displayed on the control panel.

Initial Startup Problem

Possible Cause A) No power supply to the electrical panel B) No power to the auxiliary circuits

UNIT DOES NOT START

Check/Corrective Action Check that the power is on and the unit main switch on the electrical panel is closed. 1) Check that the M automatic circuit breaker on the AUX circuit is set. 2) Check the fuse on the main board.

C) Control panel does not start the Check that the control panel connectors are unit correctly located in their sockets.

Temperature Control Problem

Possible Cause

Check/Corrective Action

A) Parameter settings on the control panel are not correct

See “Adjusting “Adjusting Parameters” Parameters” on page 11. 11.

B) Air flow is low or absent

See the table “Fans” “Fans” on page page 77. 77 .

C) Temperature sensor reads higher Check the electrical connections and the control than expected configuration.

R OOM OOM TEMPERATURE IS TOO HIGH

D) Thermal load is higher than the Check the room’s thermal load. expected Check the electrical connections of the actuator valve. E) Chilled Water valve is not working

Open the valve by means of the manual control knob. Check the chilled water supply and check that the shut-off valves are open.

F) Insuff Insuffici icient ent chille chilled d water water flow

Check Check the chill chilled ed water water functio function. n.



R OOM OOM TEMPERATURE IS TOO LOW

C) Hot water coil is not working

1) Check the hot water capacity and temperature. 2) Check the function of the regulation valve.

E) Chilled water valve is blocked open

Close the valves using the manual control knob and replace the actuator.


75

Electric Heaters Possible Cause

Problem

A) Insufficient air flow

ELECTRIC B) Thermostat connection wire is HEATER SAFETY HEATER SAFETY THERMOSTAT interrupted CLOSES OR OPENS OR OPENS C) Thermostat is faulty

Check/Corrective Action See the table “Fans” “Fans” on page 77. 77. Check the connection between the safety thermostat and the control system. Replace the thermostat.

Humidity Control Problem

R OOM OOM HUMIDITY

Possible Cause

Check/Corrective Action



B) Latent load is higher than expected

Check the latent load, fresh air conditions and volume; external air infiltration.

C) Dehumidification valve not shutting

Check that the feeding solenoid valve of the dehumidification circuit is working properly.

D) Control system not working

Check that the panel and/or the probe are working properly.

IS TOO HIGH

E) Chilled water is not sufficiently cold for the dehumidification Lower the chilled water temperature until function (in Energy Saving and condensate is present on the surface of the coil. Twin-Cool units) A) Parameter settings on the control panel are not correct

Check the room humidity settings.

B) Latent load is lower than expected

Check the latent load, fresh air conditions and volume; external air infiltration. 1) Check the water supply pressure.

R OOM OOM HUMIDITY IS TOO LOW

C) Humidifier does not work

D) Control system does not work

76

2) Check the function of the manual control system and of the steam production group. Check that the control panel and/or sensors work properly.


Fans Problem

Possible Cause A) No power to the fans

B) Air filters are clogged (clogged filter alarm enabled)

Check the power supply to the fans. 1) Shake the dust out of the cartridge and clean with a vacuum cleaner. Replace the filter if it is completely blocked. 2) Check the correct setting of the clogged filter pressure switch.

C) Fans are rotating in the wrong direction

Reverse input phases and check if fans are rotating in the correct direction.

D) Air flow is obstructed

Check the airflow distribution.

ABSENT OR LOW AIR FLOW AIR FLOW

Check/corrective Action

Check the resistance of the fan motor E) Fan thermal protection closes or opens windings. Re-set then to measure the voltage and absorption. F) Fan Fan spee speed d regu regula latio tion n not not set set corre correctl ctly y

See See “Software “Software settings” settings” on page 31. 31.

Check the dimensioning of the air G) Excessive external static pressure in the distribution system, as well as, all its parts air distribution system (ducts, suspended ceilings, floor plenum and air grills).


77

DX Troubleshooting Troubleshooting Troubleshooting is made easier by the indications on the control panel display. If necessary, call Technical Technical Support describing the nature of the fault and its possible cause displayed on the control panel.

Initial Startup Problem

Possible Cause


No power supply to the unit’s unit’s electrical Check that the power is on and the unit main panel. switch on the electrical panel is closed.

THE UNIT DOES NOT START START

78

1. No power to the auxiliary circuits.

Check Check that that the the IM auto automati maticc circu circuit it breaker on the AUX circuit is set. 2. Chec Check k the the fuse fuse on the the mai main n boar board. d.

The control panel does not start the unit.

Check that the control panel connectors are correctly located in their sockets.


Temperature Control Problem

Possible Cause


The parameter settings on the control panel are not correct.

See control panel instruction manual

The air flow is low or absent.

See “ABSENT OR LOW AIR FLOW” on page 80. 80.

The temperature sensor is not working.

Check the electrical connections and the control configuration.

The thermal load is higher than expected.

Check the room thermal load. Check the electrical connections of the servomotor valve.

ROOM TEMPERATURE TOO HIGH The three-way valve is not working.

Open the valve by means of the manual control knob. Check the chilled water supply; check that the shut-off valves are open.

There is an insufficient chilled water flow.

Check the chilled water function.

The chilled water temperature is too high.

Check the chilled water function.

The compressor(s) not working despite See “THE COMPRESSOR(S) DOESN'T/ control call DON'T WORK” WORK” on page page 83. 83. The parameter settings on the control are not correct

See the microprocessor control manual. 1.

The hot water coil is not working.

ROOM TEMPERATURE TOO LOW The hot gas coil is not working during dehumidification with re-heat.

The three way valve of the chilled water circuit is blocked open.

2. 1. 2.

Chec Check k the the hot hot water water capa capaci city ty and and temperature. Check Check the functi function on of the the regulat regulation ion valve (see valve and servomotor). Chec Check k the the hot hot gas gas valve valve func functio tion. n. Check Check the functio function n of of the the comp compres ressor sor serving the re-heat. See “THE COMPRESSOR(S) DOESN'T/DON'T DOESN'T/DON'T WORK” WORK” on page 83. 83.

Close the valve using the manual control knob and replace the servomotor.


79

Humidity Control Problem

ROOM HUMIDITY TOO HIGH

Possible Cause


The parameter settings on the control panel are not correct.

See control panel instruction manual.

The latent load is higher then expected.

Check the latent load, fresh air conditions and volume; external air infiltration.

The compressor does not function during dehumidification.

See “THE COMPRESSOR(S) DOESN'T/ DON'T WORK” WORK” on page page 83. 83.

The chilled water is not sufficiently Lower the chilled water temperature until cold for the dehumidification function condensate is present on the surface of the (in energy saving and twin cool units). coil. The parameter settings on the control panel are not correct.

Check the room humidity settings (see control panel instruction manual).

The latent latent load is lower than than expected. expected. Check the the quantity quantity of latent heat. heat.

ROOM HUMIDITY TOO LOW The humidifier doesn’t work.

The control system does not work.

1. 2.

Chec Check k the wate waterr supply supply pre press ssure ure.. Check Check the the func function tion of the the manu manual al cont control rol system and of the steam production group (see panel instruction manual). See the control panel instruction manual; check that the control panel and/or sensors work properl y.

Fans Problem

Possible Cause There is is no power to to th the fans.

Check/corrective Action Che Check the the power su supply to the the fan fans. 1.

The air filters are clogged (dirty filter alarm enabled).

ABSENT OR LOW AIR FLOW

2.

Shake Shake the the dust dust out of the the cartr cartridg idgee and and clean with a vacuum cleaner. Replace the filter if it is completely blocked. Check Check the correc correctt setti setting ng of of the the dirty dirty filter pressure switch PFS.

The air flow is obstructed.

Check that the air flow is not obstructed, not even partially.

The fans’ thermal protection intervenes.

Check the resistance of the fan motor windings. Reset then measure the voltage and absorption.

(In TD*R, TU*R units with backward Change the power supply voltage to the fans. curved blade fans). The power supply See “Software “Software settings” settings” on page 31. 31. to the fans is insufficient. The air distribution output pressure is too high.

80

Check the air pressure distribution (ducts, ceiling or floor plenum, grilles).


Compressors Problem

Possible Cause Loss of control voltage to input contact

HIGH COMPRESSOR DISCHARGE PRESSURE

Check/corrective Action Check voltage and to input and high head pressure switch

There is non-condensable air or gas in the refrigerant circuit, with Evacuate the refrigerant circuit and bubbles in the flow sight glass; recharge. excessive sub-cooling. 1. Chec Check k the the fan fan opera operatio tion n and and rotation direction in the remote heat exchanger. exchanger. 2. Chec Check k to see see if if the the exch exchan ange gerr is dirty and if necessary remove any obstructing material (leaves, paper, seeds, dust, etc.) The air flow to the remote heat with a blast of compressed air exchanger is insufficient or too or a brush; warm. 3. In the exter externa nall unit unit chec check k for for obstructions in the air flow and in the recirculation of the cooling air. 4. Chec Check k that that the the tem tempe pera ratu ture re of of the cooling air is within the planned limits. 1. Chec Check k the the cond conden ense serr wat water er flow, pressure and temperature in the closed circuit water system. The water flow to the condenser is 2. Chec Check k the the setti setting ng and and fun functi ction on insufficient or too warm. of the pressostatic regulation valve.Check the setting and function of the pressostatic regulation valve. There is too much refrigerant in the circuit; the condenser is partially Remove some refrigerant from the flooded. The refrigerant subcooling circuit. is too high at the condenser outlet. The discharge valves are partially closed.

Check the opening of the valves. 1.

AP HIGH PRESSURE SWITCH INTERVENES (high compressor discharge pressure)

The condensing pressure control system is not functioning efficiently.

The system discharge pressure is too high.

Chec Check k the the fan fan func functio tion n of of the the condenser and of the relative protection; re-set or replace the faulty fans. 2. Chec Check k the the setti setting ng and and fun functi ction on of the fan speed regulator of the remote condenser. condenser. See “THE COMPRESSOR(S) DOESN'T/DON'T WORK” on page 83. 83.


81

Problem

Possible Cause

LOW COMPRESSOR DISCHARGE PRESSURE

HIGH COMPRESSOR SUCTION PRESSURE


The condensing pressure control Check the setting and function of system is not functioning efficiently the condenser fan pressure switch (see control panel manual). or speed regulator. 1. Chec Check k the the cond conden ense serr water water flow flow and temperature 2. Chec Check k the the setti setting ng and and fun funct ctio ion n of the pressure regulating valve The water flow to the condenser is (if fitted). too high or too cold. 3. Fit a pres pressu sure re regu regula latin ting g valve valve to control the water pressure according to the condensing pressure. See “LOW COMPRESSOR SUCTION PRESSURE (and The suction pressure is too l ow. possible freezing of the coil)” on page 82. 82. Check the room’s thermal load; check in case of over The thermal load is too high. dehumidification, check the air flow and conditions of external air, check the external air infiltration. See “HIGH COMPRESSOR The discharge pressure is too high. SUCTION PRESSURE” on page 82. 82. There is an overcharge of Remove some refrigerant from the refrigerant in the circuit. Remove circuit. some refrigerant from the circuit. There is a return of liquid Check that the super heat setting of refrigerant to the compressor intake the thermostatic valve is correct. The room temperature is too low.

See “ROOM TEMPERATURE TEMPERATURE TOO LOW” LOW” on page 79. 79.

The air flow is too low or is absent.

See “ABSENT OR LOW AIR FLOW” on page page 80. 80.

The liquid line solenoid valve is not Check the valve opening. completely open.

LOW COMPRESSOR SUCTION PRESSURE (and possible freezing of the coil)

The refrigera refrigerant nt filter filter is obstructed obstructed.. Check the refrigerant refrigerant filter. filter.

The thermostatic valve is incorrectly calibrated or defective.

There is an insufficient refrigerant charge.

82

Check the super heat setting of the thermostatic valve; check that the sensor bulb has not lost its charge and is well positioned, fixed and insulated. Check the sub-cooling of the refrigerant liquid at the condenser outlet; check to see if there are any leaks and re-charge the unit.


Problem

THE COMPRESSOR(S) DOESN'T/ DON'T WORK

Possible Cause


The short circuit protection has intervened.

Re-set the automatic switch and check the cause of the short circuit.Before re-starting the compressor, check the resistance and continuity of the compressor motor windings.

The contactor is not working.

Check the contacts and the contactor coil.

Check the resistance of the compressor motor windings. After A loss or drop in of phase voltage is re-setting, measure the voltage and present. current absorption of the three phases.

THE COMPRESSOR'S INTERNAL PROTECTION INTERVENES

The motor is overloaded.The motor Check that the unit pressure is overloaded. operates within the planned limits. The power supply voltage is too high or too low.

Check that the voltage is within -10% and +10% of the nominal value.

The The rot rotor or is bloc blocke ked d or or sei seize zed. d.

Repl Replac acee the the comp compre ress ssor or..


83

APC Worldwide Customer Support Customer support for this or any other APC product is available at no charge in any of the following ways: • Visit Visit the APC Web Web site to access documents in in the APC Knowledge Knowledge Base and to submit customer customer support requests. – www.apc.com (Corporate www.apc.com (Corporate Headquarters) Connect to localized APC Web sites for specific countries, each of which provides customer support information. – www.apc.com/support/ Global support searching APC Knowledge Base and using e-support. • Con Contact tact the the APC Customer Support Center by telephone or e-mail. – Local, country-specific country-specific centers: go to www.apc.com/support/contact www.apc.com/support/contact for for contact information. For information on how to obtain local c ustomer support, contact the APC representative or other distributors from whom you purchased your APC product.

© 2012 APC by Schneider Electric. APC and the APC logo are owned by Schneider Electric Industries S.A.S., American Power Conversion Corporation, or their affiliated companies. All other trademarks are property of their respective owners.

990-4480A-001

4/2012

Uniflair Manual

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