k-uniflair-mp20eng

mP20DX - DX/S - ES - TC - CW

MICROPROCESSOR CONTROL FOR DIRECT EXPANSIONAND CHILLED WATER UNITS

INSTRUCTION MANUAL

© COPYRIGHT UNIFLAIR 1999

Version: 1.4 - 06/09/1999 Pag. 27 Cod. 05MP112A1A

GB

2

1. CONTENTS

1. CONTENTS 2

2. IMPORTANT 2

3. INTRODUCTION 3

4. CHARACTERISTICS 3

4.1. Basic circuit 34.2. Eprom Memory 34.3. Optional circuits 44.4. User terminal 4

5. REMOTE CONTROLS 5

6. SPECIAL FUNCTIONS 6

6.1. Automatic inversion of strand-by unit 66.2. Setback function 76.3. Automatic time-band operation 76.4. Emergency function 7

7. SWITCHING ON AND PROGRAMMING 7

7.1. Connecting the user terminal and power supply 77.2. Display information with unit off 87.3. Switching the unit on and off 87.4. The STATUS screen 87.5. STATUS LOOP: visualisation of operational parame-ters

9

7.6. Keypad 97.7. Consultation and programming menus 97.8. Interaction levels 9

8. CONFIGURATION OF THE CONTROL 10

8.1. Direct expansion circuits settings 118.2. Energy saving circuits settings 118.3. Setting of the twin-cool circuits 118.4. Dehumidification and high temp. alarm settings 118.5. Setting of hot gas re-heat, external devices, humidi- 12

fier and off-set sensors8.6. Setting delay times 128.7. Remote control, supervision and stand-by manage-ment

13

8.8. Changing the password 138.9. Clearing the memory and restoring factory-set defaults 14

9. CALIBRATION AND SETTINGS 14

9.1. Room setting alarms 159.2. Setting the run hour counter alarm threshold 169.3. Setting second level alarms 16

10. CLOCK-CALENDAR - TIME BANDS 17

11. MANUAL CONTROLS 18

12. MANUAL OVERRIDE OF START-UP/STOP 19

12.1. Manual override procedure 1912.2. Exiting manual override 19

13. ALARMS 1913.1 Historical sequence of alarms 2013.2 Description of alarm events 20

14. TROUBLESHOOTING 22

15. FACTORY PRE-SETS/CALIBRATION FIELDS 23

15.1 Restoring factory pre-sets 23

DIAGRAM IN APPENDIX

LAY-OUT OF BASIC CIRCUIT - STANDARD VERSIONSCREEN FLOW CHART

2. IMPORTANT

Electronic components are sensitive to static discharges emitted by the human body. Touch anearth connection before handling any electronic component.

Take out the components (basic circuit, user terminal, EPROM) from their containers only whenready to assemble and avoid touching the electronic components.

Before undertaking any operation (connection, disconnection, external linking), always disconnectthe unit from the power supply.

3

3. INTRODUCTIONThe control system consists of a Basic Circuit containing the micro-processor , a read-only memory (EPROM) which contains the regula-tion programme, a read/write memory (RAM) for operational vari-ables, a permanent read/write memory (EEPROM) for the mainte-nance of the most important data and the pre-set parameters even inthe case of power failure; the circuit also contains the terminals forelectronic input and output connections and power supply.

The User Terminal is used for programming the control parameters(set points, differentials, alarm thresholds etc.) and the display of dataand events (reading the set points and the controlled values, functionevents and/or alarms etc.). This is also controlled by a microproces-sor equipped with an LCD display, a keypad, LEDs and alarmbuzzer).A single user terminal can be used to programme and display theparameters of more than one basic circuit; this can be done:• by linking where necessary the terminal to the appropriate unit,

through the six-way telephone cable link with an easily removableconnector

• setting up a network link of the circuits and the terminal whichcan exchange data with the pre-selected circuit.

Once programmed, the basic circuit can function automatically follow-ing the pre-set data contained in the EEPROM memory.The basic circuit can therefore be used on its own: this solution, how-ever - which does not provide any means of interface with the user forthe setting of parameters and the display of data and events - is sug-gested for units for which the programming of the functions and/or thefunctional parameters are expected to be modified very rarely - ornever - as for example in unmanned installations.

To see the date and the time and to use the subroutines linked totime (time bands, memorising the time of alarm events) the basiccircuit can be supplied with a clock circuit.

The control can be linked to a centralised supervision system; an op-tional serial board is available to this end , which makes possible theoptoisolated interface to a RS422 network for data transmission.

4. CHARACTERISTICS4.1. BASIC CIRCUIT

The basic circuit (see lay-out of the basic circuit in the appendix) inthe electrical panel of the unit is connected to the user terminal with atwo-wire half-duplex asynchronous cable with a six-way telephoneconnector; the maximum cable length for remote fitting of the userterminal is 50 metres. For longer distances a T-junction must be usedwith 6-pole shielded cable (AWG24-type with twisted pair shieldingand wires and resistance <80ohm/M) with maximum length200m.The inputs and outputs of the unit are summarised below:

OPTOISOLATED DIGITAL INPUTSDI1 Remote switch-on/switch-off inletDI2 Flow switch pressostatDI3 Clogged filter pressostatDI4 Circuit 1. low pressure-stat / phase sequence control relay /

CW units: water flow switchesDI5 Circuit 1. high pressure-statDI6 Circuit 2. low pressure-statDI7 Circuit 2. high pressure-statDI8 Electrical resistance safety thermostatDI9 Humidifier interface module (high level)DI10 Flooding detectorDI11 Smoke-fire detectorDI12 T+H room limit sensors

ANALOGUE INPUTS - NTC SENSORSAI1 Room air temperature sensorAI2 Delivery air temperature sensorAI3 Recirculating water / CW temperature sensor (NTC)AI4 External air temperature sensor (NTC)

ANALOGUE INPUTS - ACTIVE SENSORS -1÷1Vcc

AI5 Room relative humidity sensorAI6 Hot water temperature sensorAI7 Humidifier interface module B7AI8 Humidifier interface module B8

DIGITAL RELAY OUTPUTSDO1 Fan relayDO2 Compressor 1 relay / Chiller calling for dehumidification (CW

units)DO3 Compressor 2 relayDO4 Re-heat relay 1 / hot gas coilDO5 Re-heat relay 2DO6 Humidifier relay / external humidifier call-onDO7 Humidifier feed valve relayDO8 Humidifier drain valve relayDO9 Switch-over contact for control of dehumidification/coil part set

(in dehumidification/CW)DO10 Switch-over contact for 2nd level alarm signal (addressable)DO11 Switch-over contact for generic alarm signal

ANALOGUE OUTPUTS - SIGNAL 0÷10V=AO1 (DO12) Cold water valveAO2 (DO13) Hot water valve / external radiator control

4.2. EPROM MEMORYThe regulatory programme of the control system is contained in theEPROM memory on the basic circuit and identified by an alphanu-meric code.

mP20 v. 5.1 EN Microprocessor Control Software Version Language

25/06/99 SB n.1 Update SB = Base circuit SE = Expansion circuit LAN Address n. 1-5 for Base circuit n. 6-7 for Expansion circuit

4

If the EPROM is replaced, observe the following procedures:• disconnect the system from the power supply (turning off mains

power at the electrical panel) making sure that the yellow LEDpower indicator is off;

• • • • remove the EPROM from its socket using a suitable extractor,making sure that it is removed in a uniform manner, and takingspecial care not to touch the components mounted in thesocket on the circuit;

• insert the new EPROM in the correct way putting the semicircularreference mark in the position indicated in the diagram of the cir-cuit board: make sure that all the feet are aligned in their respec-tive slots before pushing the EPROM gently into the socket asshown in fig.1.

If an EPROM is replaced by one with a more recent version of thecontrol program, this automatically clears the memory. If the newEPROM has the same version of the program, then clearing thememory is not necessary. In this way the set points for each parame-ter are maintained.

REFERENCE MARK

Fig. 1

Electronic components are sensitive to static discharges emit-ted by the human body.Touch an earth connection before handling any electronic componentand/or the basic circuit.Remove the EPROM from its container only when ready to assem-ble: do not touch the metal feet.

4.3. OPTIONAL CIRCUITS

4.3.a RS422 SERIAL CIRCUIT FOR CONNECTION TO SUPERVI-SOTY/MAINTENANCE SYSTEMSNetwork transmission of data is possible through the RS422 serialcircuit (see fig 2.a.) which is inserted on the main circuit board. Theserial board has a connection socket with 9 pins.

4.3.b. CLOCK CIRCUITThis allows the user to see the date and time and is indispensable foroperating programmes linked to time (time bands and memorising ofthe time and date of the alarm event).The clock circuit (see fig 2b) is equipped with a rechargeable batterywhich can run for more than one month without recharging.

4.3.c. LAN ADDRESS CIRCUITThe LAN address circuit enables the microprocessor to be connectedto a Local Area Network (see special LAN manual).

4.3.d. CLOCK CIRCUIT/LOCAL NETWORKThere is only one connector on the mP20 circuit for either the clockboard or the LAN board. If both functions are needed then a singleCLOCK+LAN board must be fitted.

4.3.e. RS485 SERIAL CIRCUIT FOR SUPERVISION AND REMOTECONTROLFig. 2.e. shows the RS485 serial board which enables opto-isolatedinterfacing with an RS485 data transmission network This optionalboard is inserted in its own connector on the main circuit board (seecircuit layout diagram attached). Connection to the RS483 network isvia the extractable terminals on the board.

CLOCK CIRCUIT

Fig. 2b

LAN ADDRESS CIRCUIT

Fig. 2c

RS422 SERIAL CIRCUIT

Fig. 2a

1 2 3 4 5

6 7 8 9 pin 1: GNDpin 2: TX+pin 3: TX-pin 4: RX+pin 5: RX-

RS485 SERIAL CIRCUIT

Fig. 2e

JS2

M1

1 2 3

pin 1: GNDpin 2: RX+ / TX+pin 3: RX- / TX-

5

4.4. USER TERMINAL

The user terminal is equipped with:

• LCD display with 4 lines, 20 alphanumeric characters for consul-tation and programming of the system;

• LED displays showing power on (green) and alarm (red);• Alarm buzzer, which can be switched off with the appropriate key

and if necessary disconnected completely with software;• Command and programming keys.

The three buttons on the front of the panel have the following func-tions:

Turns the system on and off.The setting is memorised in order to allow automatic intelli-gent resetting. If programmed (see CONTROL CONFIGU-RATION: SETTING OF AUTO RESTART) the machine as-sumes the same state (ON/OFF) that it had before the inter-ruption of the power supply.

Switches the buzzer off and resetting the alarms.If pressed once the alarm buzzer stops; if pressed twice thealarm memory is reset and the alarm event display is can-celled.A continuing alarm state causes the signal to continue evenafter the button has been pressed.The sequence of the last 30 alarms is maintained in thememory and can be accessed with the appropriate routine.

Reads parameters and events.This displays unit status and the alarm sequence memory.

The seven membrane keys, which are accessible only when the pro-tective door is opened using the catch, have the following functions:

scrolling key for subsequent screens and verticalmovement of the cursor

key to access the selected screens and horizontalmovement of the cursor

key to increase setting values

key to decrease setting values

key to modify and accept values (Enter)

escape key: return to original screen of the currentread/write routine

Full escape key: return to STATUS screen

PROGRAMMING PANEL

UNIT ON LED

ALARM LED

LCD ALPHANUMERIC DISPLAY

PANEL OPENING CATCH

Fig. 3

6

4.4.1. REMOTE TERMINAL

An optional wall mounting kit is available for remote installation of theuser terminal, including a metal housing for the terminal.The terminal is linked to the basic circuit via the cable equipped withconnectors at both ends: insert the connector into socket A which isaccessible from the back of the container (see fig 4).

Fig. 4

A

A

Fig. 5

Wall mounting is possible by using the appropriate support box towhich the user terminal is fixed (see fig 6).The complete support of the user terminal is in turn attached to theplate and fixed to the wall with screws B (see fig 7); finally, the sup-port must be attached to the plate with the lower fixing screws C.

A

a

bc

Fig. 7a Fig. 7b

Wall plate code PAKT070X3A can be used for the remote fixing of the user terminal with a coonecting cable with plugs at both ends. (See sec-tion on Basic Circuit). The terminal is connected by inserting the plug in socket A on the back of the casing (see fig. 5).Important: the wall fixing kit for the terminal is suitable for indoor installations only. For outdoor installations a housing with an adequate IP levelof protection must be used - please contact the nearest service centre for further information.

5. REMOTE CONTROLS

The unit can be turned off and on with an external remote controlsystem. The unit ‘s resources are, however, controlled by the mi-croprocessor.The types of remote control provided for are the following:

REMOTE CONTROL: The unit is turned on by closing a potential-free remote N.O. contact linked to the base circuit (see electronicdiagram of the circuit and lay-out of the base circuit).

SUPERVISION SYSTEM: a supervision system exchanges datavia a serial cable with the basic circuit which has remote monitor-ing and control. For further details, see relevant report.

6 7

7

6. SPECIAL FUNCTIONS

6.1. AUTOMATIC INVERSION OF THE STAND-BY UNITThe microprocessor is programmed to run two units automatically, ofwhich one operates normally (the basic unit) and the other operatesin reserve (the stand-by unit), without the need for external systems.To enable this function it is bnecessaru to connect terminals 960-964(2nd level addressable alarm relay) on the first unit to terminals 20-50(remote control) on the second unit and vice versa. The terminals forthe interconnection of two units are shown on the electrical diagramssupplied with the units. The operation of more than two units re-quires connection to the local network: see the relevant technicalguide.

The management of the stand-by unit includes:• AUTOMATIC TIMED INVERSION which, at programmed inter-vals, switches between the stand-by unit and the operating unit;The time interval can be set in the “Cycle Duration”. To re-set therun hour counter which controls stand-by operation, press the

button for 5 seconds. The cycle re-set is confirmed by adouble beep.

• AUTOMATIC CALL OF THE STAND-BY UNIT if the current unitmalfunctions, including if the power fails, signalled by the generalalarm (see configuration of the controls: setting the alarms).

The stand-by unit can be set to switch on instead of the normal unitor in addition to it (see CONFIGURATION OF THE CONTROLS:MANAGEMENT OF THE STAND-BY UNIT).

The additional function is useful, for example, when the high roomtemperature alarm is activated, caused by overheating. However, ifthe electrical power supply is only sufficient for one unit, it is possibleto programme the stand-by unit to operate instead of the normal unit.

6.2. SETBACK FUNCTION

The setback function, which can be activated or de-activated usingthe keypad, consists of the automatic starting of the unit which is off,but powered, when the following room limits are exceeded:• minimum temperature• maximum temperature• minimum relative humidity• maximum relative humidity

The task of the safety cycle is to control the room conditions - al-though in a wider field - even when the unit is switched off; its

activation is not therefore conditioned by signals from any remotecontrol systems, over which it takes priority.It is possible to programme the recycled air fan to operate during thesetback function in order better to regulate the room temperature(see CONFIGURATION OF THE CONTROL, VARIOUS CONTROLPARAMETERS).The intervention of the unit caused by the setback mode is not con-sidered to be an alarm condition.

6.3. AUTOMATIC TIME BAND OPERATION

This feature - which can only be activated if the controls are equippedwith a clock circuit - allows automatic activation or deactivation of theunits to be set on a time basis (time band operation).

The following can be memorised (see CLOCK CALENDAR -TIMEBANDS):• up to three on-off cycles daily, each one with a start and end time;

• a weekly cycle distinct from the daily cycles, divided into week-days, pre-holidays (automatic for Saturdays), holidays (automaticfor Sundays)

It is possible to override the timer programme for seven successivedays to programme days of the week as pre-holidays or holidays orvice versa (e.g. Christmas or other special holidays).

6.4. EMERGENCY FUNCTION (special version)

A special version is available for emergency management.The microprocessor control can receive an external electrical signalto indicate power loss (instead of the remote ON/OFF control).

The control then stops electrical resistance function until power isrestored. This situation can be overridden manually with the userterminal.

8

7. SWITCHING ON AND PROGRAMMING

The programming of the microprocessor andthe INTERACTION (WRITING/READING ofthe functional parameters) is only possiblethrough the user terminal equipped with aLCD display linked directly to the basic unitconnected to the local network through atransmission line (see relevant technicalguide).

Once the functional parameters have beenset, the basic circuit can function independ-ently without the user terminal, which canthen be removed or used for the program-ming of other units and connected only incase of necessity (for the reading of events orto change the parameters).

In the absence of programming, the basicunit operates with the factory default settings.There follows a description of the use of theterminal for programming and reading theoperating parameters of the basic unit (seefactory settings - calibration fields).

7.1. CONNECTING THE USER TERMINAL AND POWER SUPPLY

Correctly insert the cable link (connectors)(see FEATURES - USER TERMINAL) with-out forcing the connection and turn on thepower supply. The control is activated as fol-lows:

the power supply LED on the base circuitcomes on (see LAY-OUT OF THE BASICUNIT);

• it emits a short acoustic signal;• the display shows the following message

for 10 seconds, before returning to unit offstatus (see paragraph below).

INITIALISATIONPLEASE WAIT....

9

7.2. DISPLAY INFORMATION WITH UNIT OFF

A

B

C

TO START THE UNIT 1PRESS THE ON BUTTON

WARNING: SWITCHED OFF 2BY REMOTE CONTROL!

WARNING: SWITCHED OFF 3BY SUPERVISOR!

SWITCHED OFF BY PROGRAMME 4RESTART. AT 13:15 LU

WARNING: UNIT 5STOPPED IN STAND-BY!

UNIT OVERRIDE OFF 6PRESS THE ON BUTTON

D-1

When the unit is connected to the powersupply but not on, 3 fields are active on thedisplay (see fig. D-1):A. Current time and date (only if unit is fitted

with clock circuit);B. Room temperature and (with free-cooling)

outside temperature;C. Indication of unit switched off by:

1. ON/OFF switch;2. SUPERVISION system (see REMOTE

CONTROLS: SUPERVISION SYS-TEM);

3. Automatic unit inversion cycle (seeSPECIAL FUNCTIONS: AUTOMATICINVERSION OF CURRENT/STAND-BY UNITS);

4. Timer programme - in units fitted with aclock circuit - with display of the nextstart time (see SPECIAL FUNCTIONS:AUTOMATIC TIME BAND OPERA-TION);

5. Manual override switch off (see MAN-UAL OVERRIDE FOR SWITCHINGON / OFF) .

If the unit is programmed in the SETBACKMODE (see SPECIAL FUNCTIONS: SET-BACK MODE), the following message ap-pears at regular intervals in field C:

ATTENTION: UNITIN SETBACK MODE

EXAMPLE 1: message shown on the displayin the unit equipped with a clock circuit andfree-cooling cycle turned off by the remotecontrol.

1 6 : 4 5 1 2 / 1 0 / 9 7IN : 2 3 ° C EXT: 1 5 °C

WARNING: STOPPED BYREMOTE CONTROL!

EXAMPLE 2: message on display on unitwithout clock circuit, programmed for manual

on/off switching.

TEMPERATURE: 2 3 ° CTO START THE UNIT,

PRESS 'ON'

7.3. SWITCHING THE UNIT ON AND OFFAccording to the pre-set configuration, (seeCONFIGURATION OF THE CONTROL:SETTING AUTOMATIC RESTART), the con-trol of the unit can be programmed:

LOCALLY: the unit is operated with the button; one touch switches the unit on, twotouches switches it off.In order to avoid the unit switching on and offtoo often, there is a delay between pressingthe on/off button and compressor start-up.The status of the system is memorised: ifprogrammed, when power is restored, the

unit returns to the state it had before powerwas cut and restarts if it was operating.AUTOMATICALLY: the control is configuredto enable switching the machine off and on tooccur automatically with:1. a remote control command;2. a SUPERVISION system (only in units

with serial circuit);3. programmed automatic timer (possible

only in units with clock circuit);the automatic inversion cycle of the baseunit (see SPECIAL FUNCTIONS: AUTO-

MATIC INVERSION OF BASE/STAND-BY UNITS).

If programmed in the SETBACK MODE (seeSPECIAL FUNCTIONS: SETBACK MODE),the unit starts up automatically even if thepre-set thermohygrometric limits have beenexceeded

NB. during automatic operation, the button is inactive, except when manual over-ride is activated (see SWITCHING ON/OFFMANUALLY).

7.4. THE STATUS SCREENWhen the unit is in operation, the STATUSscreen appears on the display, and has fiveactive fields (see fig D-2):A. The time (only in the units equipped with a

clock circuit), room temperature, roomhumidity (only with humidity sensors);

B. Current operation: according to the work-ing conditions, the following indicationsare provided:• COOLING• HEATING• DEHUMIDIFICATION• RE-HEATING

C. Manual override with regard to the auto-matic cycle:• “MAN“ in the operating mode with

manual commands (see MANUALCOMMANDS);

• “FORCE” if the machine is turned on bymanual override (see SWITCHINGON/OFF MANUAL OVERRIDE);

• “WATCH” when the unit enters theSETBACK MODE to maintain theTHERMOHYGROMETRIC parameterswithin the established limits (see SPE-CIAL FUNCTIONS: SETBACK MODE);

• EMERG” if the emergency function isactivated (see SPECIAL FUNCTIONS:EMERGENCY FUNCTION)

• • •

• •

A

B

C D E

MAN REMOTE ALARM

FORCE SUPERV. SERV.

WATCH CYCLE

D -2 TIME

D. Indication of the slave status of the unitwhich may be:• “REMOTE”: to a remote control (see

REMOTE CONTROLS);• “SUPERV.”: to a supervision system

(see REMOTE CONTROLS);• “CYCLE”: to an automatic inversion cy-

cle (see SPECIAL FUNCTIONS:AUTOMATIC INVERSION OF STAND-BY UNIT);

• “TIME”: to a timer programme (seeSPECIAL FUNCTIONS: AUTOMATICTIME BAND FUNCTION).

E. Indication of fault, which may be:

• “ALARM” if there is an alarm;• “SERV.” if the run hours counter

threshold is exceeded (see SERVICEALARM).

10

7.5. STATUS LOOP: VISUALISATION OF OPERATING PARAMETERSThe unit’s function parameters can be read in

sequence by pressing the button on thefront panel. At the end of the reading cyclethe STATUS display returns

Pressing the button, accessed by openingthe terminal cover, returns to the STATUSdisplay immediately.The information shown on the display is illus-trated under the STATUS panel in theSCREEN flow chart. Only information related

to the pre-selected configuration is shown.Hour and date are only shown if the clockcircuit is fitted.

7.6. KEYPADThe keypad, described in the section on theUser Terminal, is divided into two parts:A. External buttons used for current opera-

tions (switching on/off, reading parame-ters, silencing alarm buzzer, etc.);

B. Internal buttons, accessed by opening theprotective cover, used for interacting withthe system memory.

During consultation, calibration and setting,the display guides the user through the

menu screen structure. A cursor shows theactive screen.

7.7. CONSULTATION AND PROGRAMMING MENU(cf. Screen flow chart appendix)

Access to consultation and programming ofcontrol parameters is arranged in menus andis obtained from any of the visualisation loopsfor the function parameters by pressing the

horizontal scrolling button found underthe cover of the user terminal.

ACCESS TO MENUS AND SUBROUTINESEach of the three areas of the menu whichgive access to the reading / calibration sub-routines is composed of several options (oneper line). To continue, move the cursor verti-cally using the button and then access the

option by pressing the button.

SUBROUTINE OPERATIONSThe sequential passage between screenswithin each subroutine is performed by

pressing the page down button; The se-quence is circular and leads back to the firstscreen.The write subroutines allow the variation ofmemorised data and require a password foraccess. The password is in a sealed enve-lope attached to this manual, addressed tothe service manager.

VARIATION OF PARAMETERSCalibration and/or configuration parameters ina subroutine are modified as follows:

• choose the screen (using the button)which contains the required parameter.The flashing cursor appears in the top leftcorner of the screen;

press the button to move the cursor tothe parameter; change the value of the pa-

rameter (whether numerical or yes/no) with

the and buttons (numerical valuescan be altered only within the limits of thepre-set calibration);

• press the button to enter new values.

Pressing the button moves the cursor tothe next parameter, leaving any unmodifieddata unchanged in the memory.

IMPORTANT:

• pressing the button takes the screenback to the start of the subroutine.

• pressing the button returns to theSTATUS screen.

7.8. INTERACTION LEVELSAttached is the screen flow chart for readingand programming the control.The appearance of the screen in the opera-tional sequence depends on the pre-selectedconfiguration. (e.g. the screen for the electri-cal resistance does not appear if the machineis not fitted with it).The interaction of the user with the control ison 4 levels:

1. READING which, as well as the visualisa-tion of parameters, consists of the readingof the following:• current date and time (if clock circuit

fitted)• room conditions• values measured by sensors con-

nected to the system• set point s of function parameters• alarm events and memories (with time

and date of event if clock circuit fitted);

This level, freely accessible, also permitsaccess to the setting of the clock and tothe programming of time bands

2. OPERATIONAL PARAMETER SETTINGLEVEL which allows the modification ofthe setting values of:• set points of function parameters;• thresholds of programmable alarms;• thresholds of cumulative function hours

of individual components to indicate re-quests for maintenance.

This level is accessed with the SETTINGpassword.

3. MANUAL COMMAND LEVEL which al-

lows the manual starting of the variouscomponents of the unit, independently ofroom conditions.

This level is accessed with the CON-FIGURATION / MANUAL COMMANDpassword.

4. CONFIGURATION LEVEL in which thefollowing are possible:• the adapting of software to the re-

quested functions;• operations on the microprocessor

memory.This level is only accessible with theCONFIGURATION / MANUAL COM-MAND password contained in the sealedenvelope attached to this manual and ad-dressed to the Service manager.. In thislevel it is also possible to modify theSETTING and CONFIGURATION / MAN-UAL COMMAND passwords (see CON-FIGURATION OF CONTROL: CHANG-ING PASSWORDS).

11

8. CONFIGURATION OF THE CONTROL

The microprocessor control must be configured, i.e. adaptedto the unit in which it is to be installed.This operation is normally performed when the control is in-stalled in the unit, i.e. in the factory.It may however happen that modifications need to be carriedout because of changes to the unit or to the system.

There is a specific part of the programme which accesses theCONFIGURATION subroutine and to the other operationswhich are normally performed by service technicians.To access the CONFIGURATION subroutine follow the se-quence below until screen 75 which requests the SERVICEpassword.

_ Alarm Display Set Point Display Settings Service

Alarm Display Set Point Display Settings_ Service

Access toConfiguration Menu

Enter Password: 00000

Software Configuration Remote Control Operat on Memory

(screen 11) (screen 11) (screen 75) (screen 76)

Hardware_ Configuration

Delay SettingManual Control

Unit Type DXCompressor No. 1Electric Reheat 3Hot Water Reheat N

(screen 76a) (screen 84a)

Closed circuit SetupTemp. E.S. °C 08.0Summer Temp. °C 28.0Rad-Cooler On-Off

(screen 85b - ES)

Closed circuit Setup

Set Point. °C 28.0Rad-Cooler On-Off

(screen 85a - DX, DX-S e TC)


Chilled Water Activ.Set Point °C 07.0

(maschera 86 - TC)

Screen 84 enables configuration of the unit type: direct expansion, energy saving with free cooling, twin-cool, chiller water.Depending on the configuration, one of the screens from 85 to 87 is shown for the settings of:- outside air temperature set point for free cooling activation;- water temperature set point for changeover to chilled water function;- temperature set points for the chilled water circuit.

Chilled Water setupDehum. Cycle StartSet Point °C 07.0High Temo. °C 15.0

Hot Gas Coil NExternal Dehumid. NExternal Humidif. N

Offset Adj.(sonda interessata)

Read value °C 22.7Adjustament °C 0.0

Humidifier Mod. : ---V: --- Ph. - TAM: ---Steam Cap. kg/h: --Nom. Curr. A: 00.00

(screen 87- CW) (screen 88) screen 89) (screen from 90 a 93)

12

8.1. DIRECT EXPANSION CIRCUIT SETTINGS

Enables the setting of the closed circuit water temperatureset point necessary for condensation.Radiator control can be either On-Off or modulating.

8.2. ENERGY SAVING CIRCUIT SETTINGS

Closed Circuit SetupTemp. E.S. °C 08.0Summer Temp. °C 28.0Rad-Cooler On-Off/Modul.

This appears only with Energy Saving versions and enablesthe settings necessary for the maintaining of water tempera-ture in the closed circuit at two levels:

• at minimum value (ES temperature) during the energy re-covery phase;

• at a value sufficient for condensation (Summer Temp.) dur-ing the mechanical cooling phase (only when compressorsare working).

The control of the radiator connected (Rad-Cooler) can be On-off or Modulating.

8.3. SETTING OF THE TWIN-COOL CIRCUIT

Closed Circuit Setup

Set Point °C 28.0Rad-Cooler On-Off/Modul

Close Circuit Setup

Chiller Water Activ.Set Point °C 07.0

This screen enables the settings necessary for the maintain-ing of water temperature in the closed circuit at two levels: atminimum value (ES temperature) during the energy recoveryphase and at a value sufficient for condensation (SummerTemp.) during the mechanical cooling phase (only whencompressors are working).The control of the radiator (Rad-Cooler) can be On-off orModulating.

Appears only with Twin-Cool versions enables the settingsnecessary for activating the transition to chilled water func-tion.

8.4. DEHUMIDIFICATION AND ALARM SETTINGS

Chilled Water setupDehum. Cycle StartSet Point °C 07.0High Temp. °C 15.0

When the water temperature sensor is installed it is automati-cally possible to control the unit as “sensible heat only”, i.e. asan oversized unit which enables the use of chilled water attemperatures higher than the normal 7/12°C.

A special control is activated in these units during dehumidifi-cation which functions as follows:

- when dehumidification is requested the corresponding digi-tal output is immediately activated (which sends a messageto the chilled water production group to produce water at alower temperature for dehumidification)

- The temperature sensor at the chilled water intake is read;

- When the reading value reaches the set-point (see screen87) the valve is overridden to max. opening;

- If the set-point is not reached after 15 minutes a fault condi-tion is indicated by an audible signal, an alarm status and adetailed message (see section on Alarms).

The need to have a sensor on the chilled water intake enablesthe setting of a High Temp. limit alarm which signals any faultin the chilled water production system (i.e. the water tempera-ture is too high for cooling) (see section on Alarms).

Closed Circuit Setup

Set Point °C 28.0Rad-Cooler On-Off

DX

85a

ES

85b

TC

85a

86

CW

87

13

8.5. SETTING THE HOT GAS RE-HEAT, EXTERNAL DEVICES,HUMIDIFIER AND OFF-SET SENSORS







Hardware_ Configuration

Delay SettingManual Control

Unit Type DXCompressor No. 1Electric Reheat 3Hot Water Reheat N

(screen 76a) (screen 84)

....(screen 85a - DX,DX-S)(screen 85a, 86 - TC)(screen 55b - ES)(screen 87 - CW)


Chilled Water Activ.Set Point °C 07.0

(screen 86 - TC)

Screen 88 is used to set:• the presence of a hot gas re-heat coil;• the use of an external dehumidifier piloted by the DO9 output,

which substitutes the dehumidification by the resources of theunit.

• The use of an external on/off humidifier piloted by the D06 relayoutput in place of the unit’s dehumidification system (see sectionon Base Circuit).

Screen 89 is used to set the model of built-in humidifier, the nomi-nal voltage, the number of phases, the model of amperometrictransformer (TAM) and the steam production capacity (SteamCap.). The nominal current absorption is also shown (Nom. Curr.A).

Screens 90,91,92 and 93 can be used for adjusting the read valuesof the temperature sensors via the display of the read values on ameasurement instrument..The adjustment can be made at intervals of 0.1 °C and the maxi-mum adjustment possible is from -9.9°C to +9.9 °C.

When the unit is configured in the factory, the microprocessor con-trol analyses the analogue and digital inputs to detect automaticallythe sensors which are connected to the terminal board. If optionalsensors (clogged filter, flooding, smoke/fire or temperature & hu-midity) are connected to the board after the unit is delivered, thesemust be specified in screen 93b.

NOTE: the electrical diagram supplied with the unit gives details ofanalogue and digital inputs for the connection of optional sensors..

8.6. SETTING DELAY TIMES







Harware Configurations_..Delay Settings....Manual Control

Power On Delay s 000LP-Stat Delay s 180Start Trans. s 60T+H Al. Delay min 15

Anti-Hunting TimeConstant of Room

Temp. Control min 01

(screen 76a) (screen 94) (screen 94b)

The first screen (n° 94) is used to set:• the unit re-start delay after power loss (Power On Delay);• the initial period after compressor start-up during which the low

pressure pressostat reading is ignored (LP-Stat Delay);• the delay between the start-up of the unit and the start of regulation.

(Start Trans.);

• the delay after the start-up of the unit before the signalling of roomcondition alarms (T+H Al. Delay)

The next screen (n° 94b) sets the room temperature control antihunting constant for avoiding excessive thermal swings. This valuemust increase with the thermal inertia of the air conditioned room.

.

Chilled Water setupDehum. Cycle StartSet Point °C 07.0High Temp. °C 15.0

(screen 87 - CW)

Hot Gas Coil NExternal Dehumid. NExternal Humidif. N

(screen 88)

Humidifier Mod.: --V: --- Ph. - TAM: ---Steam Cap. kg/h: --Nom. Curr. A: 00.00

(screen 89)

Offset Adj.(sensor)

Read Value °C 22.7Adjustament °C 00.0

(screen: 90 - 93)

Cl. Filter P-stat NFlood detector NSmoke/Fire-stat NT+H Instruments N

(screen: 93b)

14

8.7. REMOTE CONTROL, SUPERVISION AND STAND-BY MANAGEMENT







Screen 77 sets:• remote control via potential-free contact (I/O via Contact)• remote control by supervision system via RS422 or RS485 serial

line - (I/O via Serial)• the serial address of the unit if connected to a serial supervision

network• the serial transmission speed (Speed) -1200, 2400, 4800 (and for

RS485) 9600 and 19200.• The group configuration with one unit in stand-by (Unit Switch-Over).

As described in the section on special functions, it is possible to man-age two units with stand-by functions.

Screen 78 (which does not appear if the unit is in a local network)sets:• the rotation time of the stand-by unit (Cycle Time)• the possibility to have only one unit functioning (1 Unit On Limit), in

order to avoid overloading power supply line which is insufficient forboth units. (e.g. UPS)

Screen 79 is only shown when:a. “Unit switch-over - YES” is selected in screen 77;b. The unit is in a local network.This screen enables the setting of:• the rotation time of the stand-by unit (Cycle Time)• the number of units connected in the local network (No. of Units (2-

5) and in the rotation group.

If the stand-by management of units in a LAN is NOT required:• select ‘Unit Switch-Over’ - YES in screen 77• set the number of units in the LAN in screen 79• go to screen 77 in the Remote Control subroutine again and select

“Unit Switch-Over - NO” in screen 77.

Screen 79.a (only shown with LAN configuration) enables the selec-tion of unit function with mean temperature and humidity values orwith local values.- Mode: Local: unit control uses temperature and humidity values readby local sensors.- Mode: Mean: unit control uses average temperature a d humidityreadings from sensors on all the units in the LAN In this mode there isa settable differential value (default 2°C) which automatically switchesbetween mean and local values.

8.8. CHANGING THE PASSWORD






(screen 11) (screen 11) (screen 75 ) (screen 76)

Software Configuration Remote Control_ Operat. on Memory

_ Password Settings Memory Clear-up Factory Pre-set

Set-up of Passwordsfor Accessing to:

Settings 00000Service 00000

(screen 76) (screen 80) (screen 81)

Screen 81 enables the Settings and Service menu access passwordsto be changed.Since access to the CONFIGURATION subroutine is possible onlywith the relative password, make a note of the new password beforechanging the old one.

Software Configuration_Renote Control Operat on Memory

(screen 76)

I/O via Contact NI/O via Serial NId# 01 Speed 1200Units Switch-Over N

(screen 77)

Autom. Switch-OverBase / Std-by Pair

Cycle Time h 1751 Unit On Limit N

(screen 78)

Autom. Switch-OverBase / Std-by Pair

Cycle Time h 175No. of Unit (2-5) 2

(screen 79 LAN)

Usage of T+H valuesMode: Mean

Aut.ChangeoverMean/Loc.Diff.°C 2.0

(screen 79a LAN)

15

8.9. CLEARING THE MEMORY AND RESTORING FACTORY-SET DEFAULTS







Software Configuration Remote Control_ Operat. on Memory

Password Settings_ Memory Clear-up Factory Pre-set

The Memory Clear-upInvolves the Loss ofall Recorded Data

Confirm? _NO YES

The Set Point ResetInvolves the Loss ofall Recorded Data

Confirm? _NO YES


Screen 82 interacts with the data in the microprocessor EEPROM.

Clearing the memory (“memory clear-up”) is necessary if the EPROMis changed (for example to up-date the program) or if the data (set-points, configuration choices, etc.) is disrupted.After clearing the memory it is necessary to re-set the factory de-faults, re-configure the control and re-set parameters which were dif-ferent from the defaults. (See FACTORY DEFAULTS-SETTINGFIELDS).

Set Point Reset automatically restores the factory defaults (see FAC-TORY DEFAULTS-SETTING FIELDS) when the memory has beencleared or when it is necessary to restore all parameters to defaultvalues with a single command.After this operation it is necessary to re-configure the control and re-adjust the set-points if the desired settings are different from the de-faults.

9. CALIBRATION AND SETTINGS

All variables are pre-set in the factory to enable the control to functioncorrectly and guaranteeing the maintenance of standard conditions inthe room (see FACTORY DEFAULTS-SETTING FIELDS).

The setting variables in the memory can be checked and modified inthe SETTINGS subroutine by following the sequence below and then

pressing the button to read the data in sequence.By choosing the SET POINT DISPLAY mode, the password is notrequested and settings can be read but not modified.



If dehumidification control is activated, the set points relating to humidity are also shown :


If setback mode is activated the set points relating to humidity are also shown:


If the humidifier is configured using screen 89, the humidifier settings can be accessed:

.....Alarm Display Set Point Display_...Settings.... Service

Accessto Settings

Enter Password 00000

_ Room Cond. Setting Humidifier Setting Alarm Setting Clock Facility

Cool. Set P. °C 23.0Sensitivity °C 1.5Time constant s 0600Del. Temp.Limit °C 14

Cool. Set P. °C 23.0Heat. Set P. °C 23.0Sensitivity °C 1.5

_ Relative HumidityDehumid. Control: NDehum.Set P. rH% 55Deh.Prop.Band rH% 05

_ HumidificationHumid.Set P. rH% 45Hum.Prop.Band rH%0.5

Setback mode NMin. Temp. °C 16Max. Temp °C 28

Relative HumidityDehumid. Control: NO

_ Set Backmode NOMin. Temp. °C 16.0Max Temp. °C 28.0

Relative HumidityDehumid. Control: YESSet Dehumid. %rH 55Dehum.prod.band. 05

Humidifier SettingSet Humidif. %rH 45Humidif.prop.band 05

_ Set Backmode NOMin. Temp. °C 16.0Max Temp. °C 28.0

Set Backmode YESMin. Temp. °C 16.0Max Temp. °C 28.0

Set BackmodeMin. Rel Hum. rH% 35Max Rel.Hum. rH% 75


Accessto Settings


Room Cond. Setting_ Humidifier Setting Alarm Setting Clock Facility

_ Humidifier SettingMaximum Steam

Production kg/h 02.0(30-100% Nom. Cap.)

16

To change the setting variables and adjust the performance of the unitit is necessary to enter the SETTINGS subroutine and follow the se-quence below up to screen 67 which requests the Setting password.

Enter the password which is found in the envelope enclosed with this

manual and press the button to enter the subroutine.

If the password is not correct access to the subroutine is denied.If an incorrect password is entered three times, an alarm status is ac-tivated and memorised.

IMPORTANT: at any time it is possible to:

• return to the previous menu with;

• return to the STATUS screen with:

The number and the content of the screens are related to the maxi-mum configuration. In the subroutines only information relating to theactual configuration appears.Values can only be changed in the enabled setting fields.N.B.: default values are shown in the screens in this manual (seeFACTORY DEFAULTS-SETTING FIELDS).

SCREEN 42• Cool. Set P.: cooling set point (°C)Important: to lower the cooling set point it may be necessary to lowerthe heating set point as well, in order to prevent the cooling proportio-nal band overlapping the heating band.• Sensitivity: .proportional cooling band (°C)• Time Constant: integration time of P+I (s), only for close control

mode.• Del. Temp. Limit:: discharge air minimum temperature limit (°C),

(only with optional temperature sensor.

SCREEN 43• Cool. Set P.: cooling set point (°C) (read only)

• Heat. Set P.: heating set point (°C)• Sensitivity: . proportional heating band (°C)

SCREEN 44For dehumidification control:• Dehumid. Control: dehumidification function enabled/disabled• Dehum. Set P.: dehumidification set point (rH%)• Deh. Prop. Band.: hysteresis of dehumidification (rH%)

SCREEN 45For humidification control (only with an internal or external humidifier)• Humid. Set P.: humidification set point (rH%)• Hum. Prop. Band.: proportional humidification function band (rH%)

SCREEN 46For setback mode control:• Setback mode: setback mode function enabled/disabled• Min. Temp.: re-heat temperature set point during setback mode

(°C)• Max. Temp.: cooling temperature set point during setback mode:

(°C)

SCREEN 47For setback mode control.• Min. Rel Hum.: humidification start set point during setback mode

(rH%)• Max. Rel Hum.: dehumidification start set point during setback

mode (rH%)

SCREEN 48For setting the steam production capacity of the built-in humidifier.• Maximum Steam Production: max. steam production limit in kg/hN.B. by reducing the steam production capacity to the level requiredby the room, it is possible to optimise humidification function and ex-tend the life of the steam cylinder.

9.1. ROOM SETTING ALARMS



For setting the minimum and maximum room temperature andrelative humidity limits; when the limit is reached the specific alarmis signalled by the internal sensor.

SCREEN 50• Cool. Set P.: cooling set point(°C) (read only)• Room High T: high room temperature alarm threshold (°C)• Heat. Set P: heating set point (°C) (read only)• Room Low T. low room temperature alarm threshold(°C)N.B. the last two lines only appear if there is at least one heatingdevice present.

SCREEN 51• Dehum. Set P dehumidification set point (rH%) (read only)• High Rel.Hum: high room relative humidity alarm threshold

(rH%)• Hum. Set P: humidification set point (rH%) (read only)• Low Rel.Hum: low room relative humidity alarm threshold(rH%)

N.B. the display of the lines depends on the unit resources avail-able.

Cool. Set P. °C 23.0Room High T. °C 30Heat. Set P. °C 23.0Room Low T. °C 10


Accessto Settings


Room Cond. Setting Humidifier Setting_ Alarm Setting Clock Facility

_ Temperature Alarms. Humidity Alarms Run Hour 2nd Level Alarms

Temperature Alarms._ Humidity Alarms Run Hour 2nd Level Alarms

Dehum. Set P. rH% 55High Rel.Hum. rH% 80Hum. Set P. rH% 45Low Rel.Hum. rH% 30

17

9.2. SETTING THE RUN HOUR COUNTER ALARM THRESHOLD


(screen 52) (screens 53 to 60)

This part of the programme enables the setting of the service in-tervals of the unit’s components by fixing a run hour limit.When the component concerned reaches the limit the control sig-nals the service request, activating an alarm condition and display-ing “SERV” on the first screen.

Use the key to scroll down the devices present in the unit.:1. Dirty filters2. Compressor 1 (or 1.1 in a unit with 4 compressors)3. Compressor 1.2 (in a unit with 4 compressors)4. Compressor 2 (or 2.1 in a unit with 4 compressors)5. Compressor 2.2 (in a unit with 4 compressors)6. Electric re-heat 17. Electric re-heat 28. Humidifier9. Complete unit

9.3. SETTING SECOND LEVEL ALARMS

(screen 11) (screen 67) (screen 41 ) (screen 49)



This part of the programme enables the choosing of which alarmsde-energise the adressable alarm relay (2nd level).

When one or more units are connected of which one is in stand-by, the selected alarms activate the changeover of the functioningunit and the switching on of the stand-by unit.

Air FilterTot.Run Hours 00000Alarm Limit H 01000Reset --


Accessto Settings



Temperature Alarms. Humidity Alarms_ Run Hour 2nd Level Alarms

(Risorsa specifica)Tot.Run Hours 00000Alarm Limit H 00000Reset --

2nd Level AlarmsAir Flow/Fans YCompressors YEl.Heaters Y

2nd Level AlarmsMain Sensor YAuxil. Sensor NLocal Network N

Alarm Display Set Point Display_ Settings Service

Accessto Settings



Temperature Alarms. Humidity Alarms Run Hour_ 2nd Level Alarms

2nd Level AlarmsAir filters NHumidifier YLowRoomR.Hum Y

2nd Level AlarmsWrong Password NUnit Run Hours NFilter Run Hours N

2nd Level AlarmsHigh RoomTemp YLow Room Temp YHigh RoomR.Hum Y

2nd Level AlarmsCompr.Run Hours NReheat.Run Hours NHumidifier Run H. N

2nd Level AlarmsFlooding NSmoke/fire NExt.RoomSensor N

18

10. CLOCK-CALENDAR - TIME BANDS

Microprocessors fitted with the optional clock circuit, as well asdisplaying the current time and date, enable the associating of thefollowing with time:• the starting and stopping of the unit according to a time sched-

ule (see. SPECIAL FUNCTION: AUTOMATIC TIME BANDFUNCTION);

• alarm events.The programming of the current time and date and the program-ming of the time bands is done using the CLOCK FUNCTION sub-routine which is accessed as follows:



If the ‘unit on-off cycle’ function is enabled:


(screen 74)

Screen 68 sets:• the time of day (hours, minutes);• the date (day, month, year).

This enables the setting of the automatic start and stop of the uniton a time basis (time bands) with:• up to three daily on/off cycles, each with a start time and a stop

time;

• a weekly cycle which divides the daily cycles into weekdays(Monday to Friday), pre-holidays (default for Saturday) and holi-days (default for Sundays).

If YES is selected in screen 70, the time band function is acti-vated. Screens 71-72 and 73 set the on and off cycles of the unitfor weekdays, pre-holidays and holidays. It is possible to changethe default settings for classification of days of the week. Thesymbol >P in screen 74 indicates that, for example, a weekdayhas been manually changed into a pre-holiday.

Alarm Display Set Point Display_ Settings Service

Accessto Settings


Room Cond. Setting Humidifier Setting Alarm Setting_ Clock Facility

Clock - CalendarHours/Minutes 00:00DD/MM/YY 00/00/00Weekday

PROGRAM. 00/00/00MO TU WE TH FR SA SU

≥P N N N N P F

Unit On-off Cycle(Max 3 On-off Daily Cy-cles)Enable: N

Regular DayOn 00:00 Off 00:00On 00:00 Off 00:00On 00:00 Off 00:00

Saturday/Pre-HolidayOn 00:00 Off 00:00On 00:00 Off 00:00On 00:00 Off 00:00

Sunday and HolidayOn 00:00 Off 00:00On 00:00 Off 00:00On 00:00 Off 00:00

Unit On-off Cycle(Max 3 On-off Daily Cy-cles)Enable: _NO

Unit On-off Cycle(Max 3 On-off Daily Cy-cles)Enable: YES

Programmed Cycle: NRegular dayTo Change

Press Key >>

PROGRAM. 00/00/00MO TU WE TH FR SA SU_N N N N N P F

19

11. MANUAL CONTROLS

All unit components are normally in automatic function.

To facilitate service and regulation operations or in an emergencyit is possible to override the regulation process and manually start:• recirculation fans• the compressor• the electrical re-heat• the hot gas re-heat• the external air intake damper• the condenser fans.

Obviously all safety devices are active during manual override.

The programmed function mode can be read by entering theMANUAL CONTROL read-only subroutine, following the sequence

below and then pressing the key to read all the settings in se-quence.

Entering the subroutine in this way does not allow changing of theparameters.

To change the function mode of a component, move the cursor to

the relevant line, press the or key to change between

AUTO and MAN and then confirm with .







(screen 76a) (screen 95) DX (screen 96) CW (screen 97)

(screen 98) (screen 99)

SCREEN 95 (not for CW units)• Unit start-Up: switching on the fan• Compressor 1: switching on compressor 1• Compressor 2 switching on compressor 2

SCREEN 96 (only for CW units)• Unit start-Up: switching on the fan• Y0 Ramp %: override of analogue output 0.• Y1 Ramp %: override of analogue output 1

SCREEN 97• Dehumidification: override of dehumidification function• Reheating 1: switching on of first stage of electric re-heat

• Reheating 2: switching on of second stage of electric re-heat

SCREEN 98• Humidifier Drain Valve: overrides the drain function of the hu-

midifier

SCREEN 99• Y0 Ramp: overrides analogue output 0 in direct expansion units• Y1 Ramp: overrides analogue output 1 in direct expansion units

Hardware Configurations Delay Setting_ Manual control

Manual OverrideUnit start-Up NCompressor 1 NCompressor 2 N

Manual OverrideHumidifier Drain Valve N

Manual OverrideUnit start-Up NY0 Ramp % NY1 Ramp % N

Manual OverrideY0 Ramp % 000Y1 Ramp % 000

Manual OverrideDehumidification NReheating 1 NReheating 2 N

��

20

12. MANUAL OVERRIDE OF START-UP/STOP

This subroutine is necessary to stop or startthe unit manually when it been started orstopped by one of the automatic function de-vices (shown in field D of the STATUSSCREEN: (see START-UP AND STOPPING;THE STATUS SCREEN):• Remote control;• Supervision system;• Automatic inversion of the stand-by unit;• Automatic time band function.

If the key is pressed on a unit con-trolled by one of the above devices, the dis-play automatically goes to screen 201 whichshows any manual function overrides.To enter the subroutine, type the SETTINGSpassword, found in the envelope attached to

the manual, and press the key (seeSWITCHING ON AND PROGRAMMING:CONSULTATION AND PROGRAMMINGMENU).

If an incorrect password is entered threetimes an alarm condition is activated andmemorised.

IMPORTANT: at any time it is possible to:

• return to the start of the subroutine with:

• return to the STATUS screen with:

12.1. MANUAL OVERRIDE PROCEDUREIf the unit is controlled by one of the auto-matic devices, screen 202 is shown.If the unit has been stopped by one of theautomatic devices, screen 203 is shown.

The line with the asterisk contains the de-scription of the device controlling the unit:• REMOTE CONTROL (also for CDC exter-

nal control system);• SUPERVISOR;• BASE/STAND-BY CYCLE;• TIME PROGRAMME.

To force the unit to turn on or off, press the

key again;

• if the unit has been forced to turn off, infield C of the display appears the message:“UNIT FORCED OFF - PRESS THE ONKEY” (see . SWITCHING ON AND PRO-GRAMMING: DISPLAY INFORMATIONWHEN THE UNIT IS OFF);

• if the unit has been forced to turn on, infield C of the STATUS screen appears themessage “FORCE” (see SWITCHING ONAND PROGRAMMING: THE STATUSSCREEN).

12.2. EXITING MANUAL OVERRIDE

To exit manual override , shown in field C ofthe STATUS screen with the message“FORCE”, (see SWITCHING ON AND PRO-GRAMMING: THE STATUS SCREEN), press

the key and type the SETTING Pass-word.If the unit is forced off, screen 204 will ap-pear.

If the unit is forced on, screen 205 will ap-pear.The line on the screen with the asterisk (∗)gives the description of the device controllingthe unit.

After exiting manual override the word“FORCE” no longer appears in field C of theSTATUS screen.

13. ALARMS

All alarm conditions are signalled:1. acoustically, by the buzzer in the user

terminal;2. visually, by the red LED on the front and by

one of the messages below in field E of thedisplay:• ALARM, if there is a fault; SERV., if one of the programmed com-

ponent service thresholds has beenpassed (see RUN HOUR COUNTEROPERATIONS).

3. By the closing of the potential-free NOcontacts (see LAYOUT OF THE BASECIRCUIT):• NO8-C8, with a recirculation fan alarm;• NO6-C6, with a compressor alarm;• NO11-C11, with an electric re-heat

alarm;

• NO7-C7, with a dirty filter alarm(optional)

Only if programmed (see SETTING THE 2ndLEVEL ALARMS), the alarm condition of thespecified components activates:

• the exchange of the general alarm signalcontact C10-NO10-NC10,; the automaticcalling of the stand-by unit (see REMOTECONTROL, SUPERVISION AND STAND-BY MANAGEMENT

Press the key to silence the buzzer (ifactive) and the alarm description.

Press the to read any other alarmevents in sequence and to enter the STATUS

LOOP (see STATUS LOOP: DISPLAYINGFUNCTION PARAMETERS).

The message ALARM is displayed until thecause of the alarm has been eliminated.

If the cause of the last alarm is no longer

present, keeping the button pressedeliminates that alarm message. If the causeof the alarm is still present, the buzzer willcontinue to sound.

The message SERV. Is displayed until therun hour counter is re-set (see RUN HOURCOUNTER OPERATIONS).

SWITCH ON/OFFMANUAL OVERRIDE

PLEASE TYPE INPASSWORD: 00000

(screen 201)

_UNIT MANUALLY ONTO GO BACK TO

(∗)PRESS ON/OFF KEY

(screen 205)

_UNIT SWITCHED-ON BY(∗)

TO MANUALLY STOPPRESS ON/OFF KEY

(screen 202)

_UNIT SWITCHED-OFF BY(∗)

TO MANUALLY STARTPRESS ON/OFF KEY

(screen 203)

_UNIT MANUALLY OFFTO GO BACK TO

(∗)PRESS ON/OFF KEY

(screen 204)

21

13.1. HISTORICAL ALARM SEQUENCE

In order to reconstruct the historical alarmsequence the microprocessor keeps the last30 alarm events in the memory.

All memorised alarms can be read in seriesstarting from any screen in the STATUSLOOP and following the sequence shown

here and then pressing the key.

SERV events (when the run hour counterthreshold is passed) are not memorised andare therefore not read.

In the sequence, the first alarm read is themost recent event..

All descriptions of alarm conditions include anumber from 01 to 30 next to the letters AL inthe top right corner of the display. This num-ber indicates the time order of the event. Af-ter the 30th event is passed, the numbersstart again from 01.Microprocessors with the optional clock cir-cuit associate the time and date with thealarm event.

Pressing the key returns to theSTATUS screen from any alarm readingscreen.

13.2. DESCRIPTION OF ALARM EVENTSAll possible alarm messages which can be shown on the userterminal display are listed below.

It should be noted that some of these refer to specific unitconfigurations and will not appear unless the unit in questionhas the relevant feature.

To find the solution to any problems, please refer to the Trouble-shooting section in this manual and to the instruction manual forthe unit controlled by the microprocessor.For alarms in progress (i.e. not alarms in the historical sequence),the last two lines of the screen give general indications for the so-lution of the problem.

Alarm LAN 1EEPROM Failure:

Replace Control Board

Indicates EEPROM write error - itmust be replaced.

Alarm LAN 1Attempt to Access

With Wrong(Min. 3 Oc-currences) Password

Access alarm

Alarm LAN 1Compr.1 Low Pressure

Check refrig. Circuit/Refrigerant Charge

Compressor alarm: on DX, ES, TCunits only.Causes circuit 1 compressors to stop.See Note 1.

Alarm LAN 1Compr.1 High Press.Check Refrig. Circuit

and/or Condenser

Compressor alarm: on DX, ES, TCunits only.Causes circuit 1 compressors to stop

Alarm LAN 1Compr.2 Low PressureCheck Refrig. Circuit/Refrigerant Charge

Compressor alarm: only on DX, ESand TC units.Causes circuit 2 compressors toswitch off. See note 1.

Alarm LAN 1Compr.1 High PressCheck Refrig. Circuit

and/or Condenser

Compressor alarm: only on DX, ES,TC units.Causes circuit 2 compressors to turnoff.

Alarm LAN 1Loss of Air Flow

Check Fan/Switch

Fan alarm: detected by airflow differ-ential pressostat. Causes compres-sors, electric re-heat and humidifier toturn off, leaving only fans operating.

WARNING! LAN 1Wrong Power Phases

Sequence: PleaseChange-Over 2 Phases

Causes the unit to turn off.See NOTE 1.

Alarm LAN 1Heaters Overheating

Check Air Flowand/or Safety Switch

Alarm detected by safety thermostat,Causes the electric re-heat to turn off..

Alarm LAN 1Clogged Filters

Clean or ReplaceFilter Element

Detected by dirty filter differentialpressostat. Causes an alarm signalonly - does not influence unit function.

Alarm LAN 1Flood AlarmCheck WaterConnections

For CW units only. Detected byflooding sensor. Causes the unit toswitch off only if included among sec-ond level alarms.

Alarm LAN 1Presence of

SMOKE/FIRE

Detected by smoke/flame sensor.Causes the unit to switch off only ifincluded among second level alarms.

AlarmCW Valve Failure orWater Flow too Low

Only on TC units. Causes function tochange from chilled water to directexpansion.Also displayed when the room tem-perature sensor detects the exceedingof the set limit for the first time.

Alarm LAN 1Room Limit Exceeded

(by Ext. Sensors)

Signal only.

Alarm LAN 1Room TemperatureAbove Max. Limit

Signal only.

Alarm LAN 1Room Temperature

Below Min. Limit

Signal only.

Alarm LAN 1Room Rel. Humidity

Above Max. Limit

Signal only.

Alarm LAN 1Room Rel. Humidity

Below Min. Limit

Signal only.

AL12AIR FILTER BLOCKED

12:44 12 / 10 / 97 AL12AIR FILTER BLOCKED

_ ALARM DISPLAY SET POINT DISPLAY SETTINGS SERVICE

(screen 11)

22

Alarm LAN 1Humidifier: High Current:Check Cylinder / Draining

Humidifier alarm; disables humidifica-tion function

Alarm LAN 1Humidifier: Loss of

Water: CheckWater Supply

Humidifier alarm; disables humidifica-tion function.

Alarm LAN 1Humidifier: Loss of

Power: CheckElectrical Circuit

Humidifier alarm; disables humidifica-tion function.

Alarm LAN 1Room Rel. Hum.

SensorFailed/Disconnected

Causes compressors, electric re-heatand humidifier to turn off, leaving onlyfans operating

Alarm LAN 1Room Temp.


Causes compressors, electric re-heatand humidifier to turn off, leaving onlyfans operating

Alarm LAN 1Water In Temp.


Disables the function of the unit linkedto sensor measurement (dry coolercontrol)

Alarm LAN 1Outdoor Temp.


Disables the function of the unit linkedto sensor measurement (free-coolingcontrol).

Alarm LAN 1Deliv. Temp.


Disables the function of the unit linkedto sensor measurement.

Alarm LAN 1Hot Water Temp.


Disables the function of the unit linkedto sensor measurement.

Service Alarm LAN 1Air Filter

Exceeded 00000 RunHours

Signal only. Displayed only if timethreshold is not zero.

Service Alarm LAN 1Unit



Service Alarm LAN 1Compressor 1


Signal only. Displayed only if timethreshold is not zero. Not available onCW units.










Service Alarm LAN 1El. Heater 1



Service Alarm LAN 1El. Heater 2



Service Alarm LAN 1Humidifier



Alarm LAN 1Water too Warm to

get DehumidificationCheck Chiller Group

CW units only. Detected by tem-perature sensor when chilled watertemperature does not reach thevalue set on the terminal within 15minutes of the call for dehumidifica-tion.

Alarm LAN 1High Chilled Water

Temperature:Check Chiller Group

CW units only (Signal only).

Alarm LAN 1Local Area Network

InterruptedCheck Wiring

Signal only.

LAN 1No alarm

NOTES:

1. If the Phase Sequence Error alarm is shown, check the electricalconnections and also whether the LP pressostat has intervened. Itcould be that the refrigerant charge needs to be increased (see unitinstruction manual).In the same way, if there is a Low Pressure Circuit xx alarm, thecause of this alarm must be investigated (intervention of LP pres-sostat or phase sequence relay).

2. If a unit is in a local network, the LAN address of the unit is di-splayed in addition to alarm or service messages.

23

14. TROUBLESHOOTING

Many problems can be caused by loose header connections. In theevent of an alarm, check that all wires are securely attached to theheader.

In any case it is advisable to contact the nearest authorised Service Centre, with at least a general indication of the natureof the problem.To facilitate diagnosis of the problem it is helpful to have an electricaldiagram of the unit in which the control is fitted.

PROBLEM POSSIBLE CAUSE CHECK / CORRECTIVE ACTIONTHE UNIT DOES NOT SWITCH ON(Mains LED on base circuit is off,

A) The unit’s on-board electrical panelis not powered

Check mains power. Check that the power switch on theelectrical panel is closed.

display is off, other LEDs are off) B) The base circuit of the control is notpowered.

1) Check that auxiliary power switch is primed;2) Check mains power at headers G and G0 on the base

circuit;3) Check that the protection fuse for the base circuit is

intact;4) Check the electrical connections (see unit electrical

diagram).AFTER SWITCHING ON, THE CON-TROL IS NOT IN NORMAL CONDI-TION (alarm LED on; no LCD displayor random display; buzzer active)

A) The EPROM is nor positioned cor-rectly

Disconnect the power supply, position the EPROM cor-rectly (see CHARACTERISTICS) and re-connect thepower supply. N.B.: read the IMPORTANT WARNINGSon page 2 CAREFULLY

B) Some of the EPROM pins werebent during installation.

See above

C) The microprocessor chip has beenincorrectly handled

The control must be replaced: contact the authorisedservice centre

THE USER TERMINAL DOES NOTRESPOND TO THE BUTTONS BE-ING PRESSED

D) The user terminal is not connected. Disconnect the power supply, connect the terminal and re-connect the power supply. N.B.: read the IMPORTANTWARNINGS on page 2 CAREFULLY

E) The EPROM is nor positioned cor-rectly

Disconnect the power supply, position the EPROM cor-rectly (see CHARACTERISTICS) and re-connect thepower supply. N.B.: read the IMPORTANT WARNINGSon page 2 CAREFULLY

A NON-EXISTENT ALARM CONDI-TION APPEARS REPEATEDLY

F) The contact connected to the digitalinput is normally open instead ofnormally closed

Switch the contact over (see LAYOUT OF BASE CIR-CUIT)

G) Defective contact on the relativedigital input connections

Check the closure of the contact on the base circuit head-ers.

H) Fault on the digital input circuit The control must be replaced. Contact the Service CentreON THE DISPLAY APPEARS THEMESSAGE: EEPROM DAMAGED -CHANGE CONTROL CIRCUIT

The memory chip is damaged Contact the Service Centre; change the base circuit

24

15.1. FACTORY PRE-SETS - CALIBRATION FIELDSThe microprocessor function parameters arepre-set in the factory at the most commonfunction values (DEFAULT values).

These values can be adapted to the de-mands of the environment, within the mini-mum and maximum limits given in the tablebelow.

For convenience, next to the parameter isgiven the number of the screen in which thatparameter can be modified.

CONFIGURATION STATUS PARAMETER NUMBERS

Screen PARAMETER DEFAULT Screen SETTING VALUE PRE-SET MIN MAX.

Humidity control: 42 Cooling set point °C 23,0 18,0 32,044 Dehumidification NO 42 Cooling sensitivity °C 1,5 0,5 9,989 Humidification NO 42 Time constant sec 060046 Setback mode NO 42 Delivery Temp. limit °C 14 10 25

50 High room temp. alarm threshold °C 30 20 45Addressing for 2° level alarm: 43 Heating set point °C 23,0 5,0 25,0

61 Airflow / fan YES 43 Heating sensitivity °C 1,5 0,5 9,061 Compressors YES 50 Low room temp. alarm threshold. °C 10 25 2561 Electrical Heaters YES62 Air filter NO 44 Dehum. set point rH% 55 40 9062 Humidifier YES 44 Dehum. prop. band. rH% 05 03 1562 Low Room R.Hum. YES 51 High room rH alarm threshold rH% 80 40 9963 High Room Temp.. YES 45 Hum. set point rH% 45 20 8063 Low Room Temp. YES 45 Hum. prop. band. rH% 05 03 2063 High Room R.Hum. YES 51 Low room rH alarm threshold rH% 30 05 6564 Flooding NO64 Smoke/fire NO Setback mode control64 External Room sensor NO 46 Min. Temp. °C 16 5,0 24,065 Main sensor YES 46 Max. Temp. °C 28 20,0 35,065 Auxiliary Sensor NO 47 Min. Rel. Hum. rH% 35 20 6065 Local Network NO 47 Max. Rel. Hum. rH% 75 50 9066 Wrong password NO66 Unit Run Hours NO 78 Cycle Time h 168 1 99966 Filter Run Hours NO 79 No. of Unit 2 2 567 Compr.Run Hours NO Changing the password67 Reheat.Run Hours NO 81 Password for settings 00000 00000 3200067 Humidifier Run Hours NO 81 Password for service * 00000 32000

∗ Passwords contained in sealed en-velope attached to this manual

84 Compressor number 1 1 4Remote control, supervision and stand-by management 84 Electrical Reheat 3 0 3

77 I/O via Contact NO77 I/O via Serial NO Counter threshold77 Id# 01 Speed 1200 Filter counter threshold h 1000 0 3200077 Units Switch-Over NO Humidifier h 500 0 3200078 1 Unit On Limit NO All other devices h 0 0 3200084 Hot water re-heat NO88 Hot gas coil NO Energy Saving circuit settings88 External Dehumidifier NO 85 Temp. E.S. °C 8,0 5 2488 External Humidifier NO 85 Summer Temp. °C 28,0 15 40

Manual override - DX Twin-cool circuit settings95 Unit start-up NO 86 Chilled Water Activ. - set point °C 7,0 7 2595 Compressor n.1 NO Dehumidification and alarm settings95 Compressor n.2 NO 87 Chill. water set-up - Dehum. cycle

start°C 7,0 5 20

Manual override - CW 87 Chilled Water set-up - High Temp. °C 15,0 5 2096 Unit start-up NO96 Y0 Ramp % NO 90÷93 Offset sensors - Adjustment °C 0 -9,9 +9,996 Y1 Ramp % NO Setting delay times97 Dehumidification NO 94 Power On Delay sec 0 0 30097 Reheating n.1 NO 94 Low pressure delay sec 180 0 30097 Reheating n.2 NO 94 Start Transitory sec 60 0 9998 Humidifier - drain valve NO 94 T+H Alarm Delay min 15 0 9999 Y0 Ramp % 000 94b Anti-Hunting time constant of room min 1 0 3099 Y1 Ramp % 000

15.1. RESTORING FACTORY PRE-SETSThe instruction RESTORE DEFAULT PRE-SETS (see CONFIGURATION OF THECONTROL: CLEARING THE MEMORY) canbe used to restore automatically the factorypre-sets.

This may be useful if the control needs to bereconfigured or to return with a simple com-mand to the default settings after a trial cycleof the unit.

After this operation the control must be re-configured and any set points different fromthe default must be adjusted.

LAY-OUT OF BASIC CIRCUIT - mP20 DX-DX/S-ES-TC-CW(without hot gas reheat)

123

J14

J15

J8J9

+24V

24V~

0

24V~

0

POWER SUPPLY CONNECTOR24V∼ - 50/60Hz -15VA

FUSE (250 V ∼ - 2A RIT)

POWER LED

JUMPER TO SELECT THE LOCALNETWORK COMMUNICATION MODE

MICROPROCESSOR

TELEPHONE-TYPE CONNECTOR FOR CONNECTION TOTHE USER TERMINAL UNIT OR TO LOCAL NETWORK

REAL TIME CLOCK BOARD (OPTIONAL)or NETWORK CIRCUIT (OPTIONAL)

ANALOGUE OUTPUTS

HOT WATER VALVE / EXTERNAL RADIATOR CONTROL

COLD WATER VALVE

EPROM WITH APPLICATIONPROGRAM

RS422/RS485 BOARD (OPTIONAL) FOR CONNECTION TOSUPERVISORY/TELEMAINTENANCE SYSTEMS

JUMPER TO SELECT ANALOGUE INPUTB5 (J14) - B6 (J15) IN 0÷1V OR 4÷20 mA1-2 = 4÷20 mA 2-3 = 0÷1V

HOT WATER TEMPERATURE SENSORROOM RELATIVE HUMIDITY SENSOR

EXTERNAL AIR TEMPERATURE SENSOR

RECIRCULATING WATER / CW TEMP. SENSORDELIVERY AIR TEMPERATURE SENSOR

ROOM AIR TEMPERATURE SENSOR

CIRCUIT 1. HIGH PRESSURE-STATLOW PRESSURE-STAT & PHASE SEQUENCE CONTROL RELAYCLOGGED FILTER PRESSOSTAT (OPZ)FLOW SWITCH PRESSOSTATREMOTE SWITCH-ON AND SWITCH-OFF INLET

FLOODING DETECTORHUMIDIFIER INTERFACE MODULE (high level)ELECTRICAL RESISTANCE SAFETY THERMOSTATCIRCUIT 2. HIGH PRESSURE-STATCIRCUIT 2. LOW PRESSURE-STAT

B8+24VccB7

GG0

VG0VG1

Y1Y0

ID11-220V∼ID11-24V∼ID11-Com

--------ID12-220V∼ID12-24V∼ID12-Com

NO11C11

NC11

--------NO10

C10NC10

--------NO9

C9NC9

NO8C8

--------NO7

C7

--------NO6

C6

--------NO13

C13

B6AVSSB5B4AVSSB3B2AVSSB1

IDCM2ID10ID9ID8ID7ID6

NO3C3

--------NO4C4

--------NO5C5

--------NO12C12

IDCM1ID5ID4ID3ID2ID1

C1NO1

--------C1NO1

24V∼

0

24V∼

0

N.O.COMN.C.

N.O.COMN.C.

mP20 DX-DX/S-ES-TC-CW Version 1.4

DIGITAL INPUTS

ANALOGUE INPUTS

DIGITAL INPUTS

DIGITAL OUTPUTS

GNDRX/TX -RX/TX+

LOCAL NETWORK

DIGITAL OUTPUTS

HUMIDIFIER INTERFACEMODULE

mP

20 S

cree

n F

low

Ch

art

DX

, D

X-S

, E

S,

TC

, C

W

(ve

rsio

n 1

.4.)

Su

bro

utin

e S

ett

ing

Ro

om

(T

, U

R)

Su

bro

utin

e S

ett

ing

Ala

rms

Su

bro

utin

e S

ett

ing

Hu

mid

ifie

r

Su

bro

utin

e S

ett

ing

Clo

ck A

nd

Tim

e B

an

ds

RO

OM

SE

TT

ING

HU

MID

IF. S

ET

TIN

G.

AL

AR

MS

SET

TIN

G C

LO

CK

FU

NC

TIO

NS

ME

NU

2

41

AL

AR

MS

DIS

PLA

Y S

ET

TIN

G D

ISPL

AY

SE

TT

ING

S S

ER

VIC

E

11

ME

NU

- sc

ree

n 1

Serv

ice (

ME

NU

3)

Se

ttin

g d

isp

lay

sub

rou

tine

(M

EN

U 2

)

Ala

rm d

isp

lay

sub

rou

tine

(re

ad o

nly

)

Se

ttin

g s

ub

rou

tine

(M

EN

U 2

)

Rea

d o

nly

Rea

d a

nd

wri

te

Sof

twar

e C

onfi

gura

tion

s R

emot

e C

ontr

ol O

pera

t. on

Mem

ory

ME

NU

3

76

Har

dwar

e C

onfi

gura

tion

s D

elay

Set

ting

s M

anua

l Con

trol

76a

hh:

mm

gg/

mm

/aa

AL

--

Ala

rm D

escr

ipti

on

20

Su

bro

utin

e A

larm

s

17:1

2 0

5/07

/98

A

L07

Out

door

sen

sor

lim

its

pass

ed

21 D

ISP

LA

Y O

F H

IST

OR

ICA

LSE

QU

EN

CE

OF

ME

MO

RIS

ED

AL

AR

MC

ON

DIT

ION

SC

lock

/cal

enda

r se

ttin

gH

our/

Min

utes

XX

:XX

DD

/MM

/YY

XX

/XX

/XX

Wee

kday

XX

68

Su

bro

utin

e C

lock

Fa

cilit

y

UN

IT O

N-O

FF

CY

CL

E(M

ax 3

On-

Off

cyc

les

dail

y)E

nabl

ed:

No/

yes

70

Wee

kday

sO

n 0

0:00

Off

00:

00O

n 0

0:00

Off

00:

00O

n 0

0:00

Off

00:

00

71

Sat

urda

y an

d pr

e-ho

lida

ysO

n 0

0:00

Off

00:

00O

n 0

0:00

Off

00:

00O

n 0

0:00

Off

00:

00

72

Sun

day

and

holi

days

On

00:

00

O

ff 0

0:00

On

00:

00

O

ff 0

0:00

On

00:

00

O

ff 0

0:00

73

Pro

gram

med

cyc

le:

N

Wee

kday

To

chan

ge p

ress

>>

69

No

Yes

PR

OG

RA

M.

XX

dd

/mm

/yy

MO

TU

WE

TH

FR

SA

SU

N

N

N

N

N

P

F

74

Se

ttin

gs

dis

pla

y su

bro

utin

e

Set

back

mod

eN

o/Y

esM

in T

emp.

°C

XX

.XM

ax T

emp.

°C

XX

.X

46

Coo

l Set

P.

°C X

X.X

Sen

siti

vity

°C

X.X

Tim

e co

nsta

nts

XX

XX

Del

. Tem

p. L

imit

°C

XX

42 Coo

l Set

P.

°C X

X.X

Hea

t. S

et P

.°C

XX

.XS

ensi

tivi

ty°C

X

.X

43

Set

back

mod

eY

esM

in T

emp

°CX

X.X

Max

Tem

p °C

XX

.X

46

b

Rel

ativ

e H

umid

ity

Deh

umid

. Con

trol

:

No

44 Hum

idif

icat

ion

Hum

id. S

et P

.

rH

%

XX

Hum

. Pro

p. B

and.

rH

%

XX

45

Rel

ativ

e H

umid

ity

Deh

umid

. Con

trol

:

Yes

Deh

umid

Set

.

R

H%

X

XD

ehum

.pro

p.ba

nd. R

H%

X

X

44

b

Set

back

mod

eM

in R

el H

um.

rH%

X

XM

ax R

el H

um. r

H%

XX

47

ST

AT

US

Pro

gram

me

Ver

sion

mP

20 3

.5

18.0

6.98

09(S

EQ

UE

NT

IAL

DIS

PL

AY

OF

AL

AR

MS

IN P

RO

GR

ESS

)

(hh:

mm

X

X D

D/M

M/Y

Y)*

Roo

m T

emp.

°C

XX

.XD

eliv

ery

Tem

p. °

CX

X.X

Roo

m H

umid

. rh%

XX

02

hh:

mm

XX

.X °

C X

X%

rH

Deu

mid

ific

atio

nR

e-he

atM

an/F

orce

C

ycle

/Tim

e

01

Com

pres

sor

1.1

ON

Com

pres

sor

1.2

ON

Com

pres

sor

2.1

ON

Com

pres

sor

2.2

ON

03

Ele

ctri

c re

-hea

t 1O

NE

lect

ric

re-h

eat 2

- -

Hot

Wat

er V

alve

Ope

n X

XX

%

04

Out

side

air

°

CX

X.X

Clo

sed

circ

uit

°

CX

X.X

Hot

Wat

er

°C

XX

.X

08

a

Hum

idif

ier

- -

Val

ve I

ntak

e-

-V

alve

Sin

take

- -

Pro

d. V

ap.

kg

/hX

X.X

07

Ene

rgy

Sav

ing

--

Col

d W

ater

Val

veO

pen

X

XX

%

ES

Chi

lled

Wat

er V

alve

Ope

n X

XX

% TC

e C

W

ES

Out

side

air

°C

XX

.XC

old

Wat

er °

CX

X.X

Hot

Wat

er °

CX

X.X

08

bT

C a

nd

CW

05

06

Se

rvic

e S

ub

rou

tine

Uni

t Typ

e: D

X, D

X-S

, ES

, TC

Com

pres

sors

No.

XE

lect

ric

Reh

eat

XH

ot W

ater

Reh

eat

No/

Yes

84a

Hot

Gas

Coi

lN

o/Y

esE

xter

nal D

ehum

id.

No/

Yes

Ext

erna

l Hum

idif

.N

o/Y

es

88 Hum

idif

ier

Mod

.:X

XX

V:2

30/4

00 P

h. 1

/3 T

AM

: XX

XS

team

Cap

. kg

/h:

XX

Nom

. Cur

r. A

:X

X.X

X

89 Off

set A

dj. (*)

SEN

SOR

Rea

d va

lue

°C

XX

Adj

ustm

ent

°

C

0.0

90-9

3 Clo

sed

Cir

cuit

Set

up

Set

Poi

nt°C

XX

Rad

-Coo

ler

O

n-O

ff /

Mod

ul.

85a

Clo

sed

Cir

cuit

Set

up T

emp.

E.S

.°C

XX

Sum

mer

Tem

p.°C

XX

Rad

-Coo

ler

O

n-O

ff /

Mod

ul.

85

bUni

t Typ

e:C

W

Ele

ctri

c R

ehea

tX

Hot

Wat

er R

ehea

tN

o/ Y

es

84

b

Chi

lled

Wat

er S

etup

Deh

um. C

ycle

Sta

rt S

et P

oint

°C X

XH

igh

Tem

p.°C

XX

Ext

erna

l Deh

umid

.N

o/Y

esE

xter

nal H

umid

if.

No/

Yes

88

b

87

CW

DX

, DX

-ST

CE

S

Clo

sed

Cir

cuit

Set

up

Chi

lled

Wat

er A

ctiv

. S

et P

oint

°C X

X

86

mP

20 S

cree

n F

low

Ch

art

DX

, D

X-S

, E

S,

TC

, C

W (

pag

e 2

)

(ve

rsio

n 1

.4.)

Su

bro

utin

e M

an

ua

l Co

ntr

ol

Man

ual O

verr

ide

Uni

t sta

r-up

N

O/Y

ES

Com

pres

sor

1

NO

/YE

SC

ompr

esso

r 2

NO

/YE

S

95

Man

ual O

verr

ide

Uni

t sta

rt-u

p

NO

/YE

SY

0 R

amp

%

XX

XY

1 R

amp

%X

XX

96

Man

ual O

verr

ide

Deh

umid

ific

atio

n

NO

/YE

SR

ehea

ting

1

NO

/YE

SR

ehea

ting

2N

O/Y

ES

97

Man

ual O

verr

ide

Hum

idif

ier

D

rain

Val

veN

98

DX

, E

S,

TC

CW

Man

ual O

verr

ide

Y0

Ram

p %

X

XX

Y1

Ram

p %

XX

X

99

DX

Pow

er o

n D

elay

sX

XX

LP

-Sta

rt D

elay

sX

XX

Sta

rt T

rans

.

sX

XT

+H

Al.

Del

ay

min

XX

94

Su

bro

utin

e D

ela

y S

ett

ing

s

Ant

i-H

unti

ng T

ime

Con

stan

t of

Roo

mT

emp.

Con

trol

min

XX

94b

Sof

twar

e C

onfi

gura

tion

s R

emot

e C

ontr

ol O

pera

t. on

Mem

ory

ME

NU

3

76

Har

dwar

e C

onfi

gura

tion

s D

elay

Set

ting

s M

anua

l Con

trol

76a

Su

bro

utin

e O

pe

rate

on

Me

mo

ry

Pas

swor

d S

etti

ngs

Mem

ory

Cle

ar-u

p F

acto

ry P

re-s

et

80

Set

-up

Pas

swor

dsfo

r A

cces

sing

to:

Set

ting

s00

000

Ser

vice

0000

0

81

The

Mem

ory

Cle

ar-u

pIn

volv

es T

he L

oss

ofal

l Rec

orde

d D

ata

Con

firm

?

_

NO

YE

S

82

The

Set

Poi

nt R

eset

Invo

lves

The

Los

s of

all R

ecor

ded

Dat

aC

onfi

rm?

_N

O Y

ES

83

scre

en 82

scre

en 81

scre

en 82

Hum

idif

ier

sett

ing

Max

ste

am p

rodu

ctio

n se

ttin

gkg

/hX

X.X

(30-

100

% n

omal

P.)

Su

bro

utin

e T

ara

ture

Ala

rms

Tem

pera

ture

Ala

rms

Hum

idit

y al

arm

s R

un h

our

2nd

Lev

el A

larm

s

ME

NU

4

Coo

l. S

et P

.

°C

XX

.XR

oom

Hig

h T

. °

C

XX

Hea

t Set

P.

°CX

X.X

Roo

m L

ow T

. °

CX

X

50

Deh

um. S

et P

.

rh%

X

XH

igh

Rel

. Hum

. r

h%

XX

Hum

. Set

P.

rh%

X

XL

ow R

el. H

um.

rh%

XX

51

2nd

Lev

el A

larm

sA

irfl

ow/f

an

NO

/YE

SC

ompr

esso

rs

N

O/Y

ES

Ele

ctri

c he

ater

NO

/YE

S

61 2nd

Lev

el A

larm

sA

ir f

ilte

rs

NO

/YE

SH

umid

ifie

r

N

O/Y

ES

Low

Roo

m R

.Hum

. N

O/Y

ES

62 2nd

Lev

el A

larm

sH

igh

Roo

m T

emp.

N

O/Y

ES

Low

Roo

m T

emp.

N

O/Y

ES

Hig

h R

oom

Hum

id.

NO

/YE

S

63 2nd

Lev

el A

larm

sF

lood

ing

NO

/YE

SS

mok

e/F

ire

NO

/YE

SE

xt.R

oom

sen

sor

N

O/Y

ES

64 2nd

Lev

el A

larm

sM

ain

sens

or

NO

/YE

SA

uxil

. sen

sor

NO

/YE

SL

ocal

net

wor

k

NO

/YE

S

65 2nd

Lev

el A

larm

sW

rong

Pas

swor

d

N

O/Y

ES

Uni

t Run

Hou

rs

NO

/YE

SF

ilte

r R

un H

ours

NO

/YE

S

66 2nd

Lev

el A

larm

sC

ompr

. Run

Hou

rs

NO

/YE

SR

ehea

t R

un H

our

N

O/Y

ES

Hum

idif

ier

Run

H.

NO

/YE

S

67

Hu

mid

if S

ett

ing

Su

bro

utin

e

(SP

EC

IFIC

RE

SOU

RC

E)

Tot

. Run

hou

rsX

XX

XX

Ala

rm L

imit

h.

XX

XX

X

Res

et--

52 SEQ

UE

NT

IAL

DIS

PL

AY

OF

RU

N H

OU

R L

IMIT

S O

F A

LL

CO

MP

ON

EN

TS

53-6

0

scre

en 51

scre

en 50

scre

en 52

scre

en 61

49

Su

bro

utin

e R

em

ote

Co

ntr

ol

Aut

om. S

wit

ch-O

ver

Bas

e / S

td-b

y P

air

Cyc

le T

ime

h

XX

X1

Uni

t On

Lim

it N

78

Aut

om. S

wic

h-O

ver

Bas

e / S

td-b

y P

air

Cyc

le T

ime

h

XX

XN

o. o

f U

nit (

2-5)

X

79

LA

N

I/O

via

Con

tact

NI/

O v

ia S

eria

lN

Id#

01 S

peed

1200

Uni

ts S

wit

ch-O

ver

N/Y

77

77 -

Uni

ts S

wit

ch-O

ver

NO

YES

Usa

ge o

f T

+H

val

ues

Mod

e:

Loc

al /

Mea

nA

ut.C

hang

eove

rM

ean/

Loc

.Dif

f.°C

2.

0

Documents

k-uniflair-mp20eng