UNIFLAIR Instruction manual PROGRAMME OF REGULATION FOR UNIT ISA/ISC

Transcription

1 UNIFLAIR Instruction manual PROGRAMME OF REGULATION FOR UNIT ISAISC EN

2 Programme for Unit ISAISC UNIFLAIR SpA policy is one of continuous technological innovation. The Company therefore reserves the right to amend any data herein without prior notice. Disposal: the product is made up of metal parts and plastic parts. In reference to European Union directive EC issued on 27 January 2003 and the related national legislation, please note that: WEEE cannot be disposed of as municipal waste and such waste must be collected and disposed of separately; The public or private waste collection systems defined by local legislation must be used. In addition, the equipment can be returned to the distributor at the end of its working life when buying new equipment. The equipment may contain hazardous substances: the improper use or incorrect disposal of such may have negative effects on human health and on the environment; The symbol (crossed-out wheeled bin) shown on the product or on the packaging and on the instruction sheet indicates that the equipment has been introduced onto the market after 13 August 2005 and that it must be desposed of separately; In the event of illegal disposal of electrical waste, the penalties are specified by local disposal legislation. READ AND SAVE THESE INSTRUCTIONS Drafted by: Checked by: Approved by: Munari Andrea

3 Programme for Unit ISAISC CONTENTS GENERAL DECRIPTION... 4 PROGRAMME IDENTIFICATION... 5 LANGUAGE OPTION... 5 INFORMATION DISPLAYED WITH THE UNIT IDLE... 6 CONDITIONS FOR UNIT START... 7 UNIT SWITCH ONOFF... 7 INFORMATION DISPLAYED WITH THE UNIT RUNNING... 8 SWITCH ONOFF USING MANUAL OVERRIDE... 9 VIEWING UNIT STATUS ACCESS TO DATA IN CONSULTING OR PROGRAMMING MODE...11 ACCESS LEVELS EDITING PARAMETERS PROGRAMME VERSION SPECIAL FEATURES HOUR-METER READING AND PROGRAMMING CONSULTING INPUT AND OUTPUT STATES CONFIGURING THE UNIT S DEVICES: "HARDWARE CONFIG."...17 DELAY SETTINGS MANUAL CONTROL EXV PARAMETERS UNIT S REMOTE CONTROL UNIT IN LOCAL AREA NETWORK (LAN) WORKING PARAMETERS SETBACK MODE SUMMER WINTER SWITCH OVER CLOCK-CALENDAR - TIME BANDS ALARM ADDRESSING CONSULTING ALARMS DEFAULT VALUES EXV DEFAULT VALUES APPENDIX SCREENS FLOW CHARTS GENERAL INFORMATION AND DEFINITIONS MOST COMMON PLAN NETWORK CONFIGURATIONS PLAN CONNECTION BETWEEN UPCO BOARDS REMOTE TERMINAL CONNECTIONS CABLE FOR LAN AND SUPERVISION CONNECTION EXAMPLE OF A CONNECTION TO THE REMOTE TERMINAL FROM THE BOARD...52 CONFIGURATION OF THE TERMINAL AND THE UPCO BOARD ADDRESSING THE LOCAL NETWORK...53 LAN ADDRESS OF THE UPCO BOARD LAN PARAMETER CONFIGURATION VISUALIZATION OF THE NETWORK FROM THE TERMINAL

4 Programme for Unit ISAISC GENERAL DECRIPTION The microprocessor control manages the unit s operation autonomously. The controller basically consists of: microprocessor control card, which the probes are connected to; user interface. All control algorithms are resident in the microprocessor control card, and all operating parameters, which can be viewed and set via the user terminal, are stored there. The control system provides the following functions: control of delivery water temperature based on a settable set point; option of setting a double set point (for cooling mode); option of calculating the set point based on external temperature compensation; complete alarm detection system with visual and audible indicators, and messages regarding measures to be taken; logging of all alarm events; alarm warning contacts divided up by type; programmable automatic restart when power is restored; remote unit switching onoff; control of all compressor operating time settings, pump-down mode management, compressor operation rotation, to assure their efficiency and reliability; three types of cooling control: modulating, by steps and by steps in ultra-low-noise mode; suction pump management; antifreeze heating element management; management of unit operating as heat pump; defrosting management; password on 2 programming levels (setting, hardware and software configuration); possibility of communicating with a supervision system by means of a the following types of protocol: Netvisor, Modbus, Bacnet, Lon, Metasys, SNMP (TCPIP) and Trend; clockcalendar management (clock card optional); counter totalling hours of operation of most important components; counter totalling number of times the compressors start up; display of operating status of all unit components and display of all values detected by sensors connected to the control card; option of setting separate weekly switch onoff time bands (with optional clock card): Weekdays - Saturdays - Sundays and holidays management of the local network with the possibility of setting the rotation of a unit in stand-by and the operation of this unit in set-back mode, regulation based on the average temperatures and regulations steps; override facility via which operation of main components can be controlled manually without disabling remote control, where operating; optimised control algorithm that constantly measures external temperature to manage free cooling mode in the best way possible;

5 Programme for Unit ISAISC PROGRAMME IDENTIFICATION This manual describes standard control characteristics for Chiller and Heat pump. Some of the characteristics of special-version units might differ from those described herein. Famiglia Release Date of Version Updating For LAN Network ISA v LAN LANGUAGE OPTION You have the option of selecting one of the available languages at any time by pressing the key combination and. 12: C EST Raffreddamento + 12: C EST Cooling + 12: C EST Kuehlung + LAN01 LAN01 LAN01 12: C EST Refroidissement LAN : C EST Enfriamento LAN01 +. NOTE: The only exceptions to this rule are the forms for service engineers ("Hardware Configurations"), which always appear in English

6 Programme for Unit ISAISC INFORMATION DISPLAYED WITH THE UNIT IDLE As soon as power is supplied to the control, the following forms appear: # # # # # # # # # # # # # # # # # Selftest please wait # # # # # # # # # # # # # # # # # Initiating Please Wait When the unit is powered but not running, 3 fields are active on the user terminal display: A B C 12:30 LU Water OUT: C 23.0 C A. Time and current date (only in units featuring a clock card); B. Outlet water temperature. C. One of the following messages indicating what has switched the unit off: 1. ONOFF button; 2. Remote control; 3. Supervision system; 4. Timed switch-off - in units with clock card - indicating what time the next restart is programmed for; 5. Automatic unit inversion cycle; 6. Switch-off using manual override feature; 7. Setback mode; 8. Forced switch-off subsequent to water flow alarm. To Start Unit Press On Key Warning : Stopped by Remote Control! Warning : Stopped by Supervisor! Programmed Stop Restart at 13:15 LU Warning : Stopped on Standby! Programmed Stop Press On Key Warning : Unit in Set Back Mode Warning : Stopped by Water Flow If you have chosen the holidays programme, the following form will appear: 12:30 MO Holiday Program Restart in : 10 days (with prog. cycle)

7 Programme for Unit ISAISC CONDITIONS FOR UNIT START In order to switch the unit on it is necessary for the operator to follow the operations listed below: check that the yellow light on the key is switched on (to check supply); check that the red light on the check the unit is switched on with a green light on the key is switched off (no alarm activated); ON OFF key after pressing it, or alternatively: check the unit is switched on via the remote digital input contact ID1 (see Screen 140), which should be in the closed contact position; check the unit is switched on via a supervision system if connected and configured for same (see Screen 140); check the unit is switched on via the daily or weekly time bands displayed (see Screen 130). The unit can be switched on in the following ways: UNIT SWITCH ONOFF OFF LOCAL mode via keypad: unit is controlled with the pushbutton (the OFF first time it is pressed, the unit starts; the second time, it switches off). 12: Audible feedback tells you that the ONOFF key has actually been pressed. T. water OUT: C 23.0 The controller commands compressor start so that the unit s on and off Start Delay cycles are not too close together (no more than 6 starts an hour). Hence the Please Wait compressor s start may be delayed after the ONOFF key is pressed. The unit s new state is stored. When power is restored, the unit returns to ON the state it was in before the power was cut, meaning it will restart if it was OFF running at the time. 12: ON ON T. water OUT: C 23.0 Switching Off Please Wait AUTOMATIC mode: the controller is configured so that the unit switches on and off with: 1. a remote ONOFF contact (only possible if said feature is enabled); 2. a supervision system (only possible in units featuring a serial card); 3. programmed automatic time bands (only in units featuring a clock card); 4. the automatic rotation cycle for units on standby. If programmed in setback mode, the unit also starts automatically when the set temperature and humidity limits are exceeded. ON OFF NB: when operating in automatic mode, the push button can only be used by switching the unit on or off using the override feature by entering the "SETTINGS" password (see section entitled "SWITCH ONOFF USING MANUAL OVERRIDE")

8 Programme for Unit ISAISC INFORMATION DISPLAYED WITH THE UNIT RUNNING STATUS SCREEN When the unit is running, the STATUS SCREEN appears on the display featuring 6 active fields: A. Current time (only in units featuring a clock card), delivery water temperature, summer o winter mode (only for the heat pump mode); C A B D E F B. Functions in progress; the following messages are given depending on work conditions: "COOLING""HEATING""RECOVERY HEAT"; "PUMP-DOWN CIRC. 1 "PUMP-DOWN CIRC. 2 "PUMP-DOWN CIRC. 1-2 DEFROST CIRC.1 DEFROST CIRC.2 DEFROST CIRC.1-2 C. Where applicable, it indicates automatic cycle operation override: MAN in operating mode with manual control; FORCE when switching on using manual forcing; WATCH when the unit enters setback mode to keep temperature and humidity parameters within the set limits. D. indicates unit s slave status, which can be one of the following: ON : to ONOFF key on user terminal REMOTE : to a remote contact; SUPERV. : to a Supervisor; CYCLE : to automatic cycle inverting standard units and standby units; TIME : to a programme for operation based on time bands. E. indicates trouble status, which can be one of the following: ALARM : when there is an alarm; "SERV": when a meter totalling hours of operation exceeds the threshold. F. indicates the unit, identified with "LAN 01", "LAN 02",. when a number of units are connected in a LAN and their operating status is displayed on a shared terminal. In this latter case, pressing keys and they have been addressed in. P at the same time allows you to skip to the next unit in the order 12: C EST 12: C EST Cooling Cooling P LAN 01 LAN 02 P

9 Programme for Unit ISAISC SWITCH ONOFF USING MANUAL OVERRIDE A unit switched on or off respectively can be stopped or started manually using one of the automatic operation devices: Remote ONOFF contact; Supervision system; Automatic inversion of unit on standby; Automatic mode based on time bands. ON OFF When the button is pressed, form 190 automatically appears on the display indicating, where applicable, that automatic operation has been overridden. To call up the subroutine, enter the digits making up the password to enter SETTINGS level (the password is contained in the envelope supplied with this ON OFF Switch-OnOff Manual Ovverdie Please Type-in Password: _ (Screen 190) manual) and press the key. IMPORTANT NOTE: after an incorrect password has been entered three times, an alarm state is activated and logged (see section entitled "CONSULTING ALARMS"). MANUAL OVERRIDE PROCEDURE If the unit is running subsequent to a command from one of the automatic devices, form 200 is called up. If the unit is idle subsequent to a command from one of the automatic devices, form 201 is called up. The second line ( ) features the description of the device the unit is slaved to: REMOTE ONOFF; SUPERVISOR; STAND-BY CYCLE; TIME PROGRAMME. To switch the unit off or on using the override feature, simply press the OFF key again. In this case: if the unit is forced to switch off, the display reads UNIT MANUALLY OFF PRESS ON KEY ; if the unit is forced to start, the STATUS form reads FORCE. EXITING MANUAL OVERRIDE To exit manual override, indicated in field C on the STATUS FORM with FORCE, ON OFF you will need to press the button and key in the password to enter SETTINGS level. If the unit is forced to switch off, form 203 is called up. If the unit is forced to switch on, form 202 is called up. As described above, the line with the asterisk ( ) features the description of the device the unit is slaved to. ON UNITA ACCESA DA ( ) PER FERMATA FORZATA PREMERE TASTO ONOFF (Screen 200) UNITA SPENTA DA ( ) PER AVVIO FORZATO PREMERE TASTO ONOFF (Screen 201) ON OFF UNITA FORZATA SPENTA PER TORNARE AL ( ) PREMERE TASTO ONOFF (Screen 203) UNITA FORZATA ACCESA PER TORNARE AL ( ) PREMERE TASTO ONOFF (Screen 202) ON OFF Once you have exited manual override, the FORCE message disappears from the STATUS form

10 Programme for Unit ISAISC VIEWING UNIT STATUS The unit s operating parameters (temperatures, humidity, ) can be consulted by pressing the key and scrolling through the forms with the and. keys. When the consultation cycle ends, the initial STATUS FORM returns. Press the key to go to the STATUS FORM directly. Note: the status of compressors and circulation pumps may feature four kinds of information: 1. : device not running 2. ON : device running 3. AL : alarm 4. PD : device in pump-down state (for compressors only). When it comes to compressors, the alarm warning may be the result of one of the three events below: - high pressure alarm - low pressure alarm - contact of compressor s thermal cut-out opened For water circulation pumps, on the other hand, the alarm warning is generated when the contact of the pump s thermal cut-out opens

11 Programme for Unit ISAISC ACCESS TO DATA IN CONSULTING OR PROGRAMMING MODE Control parameter consulting and programming modes can be entered directly using the keys on the user terminal: 1. ACCESS IN READ-ONLY MODE: allows you to consult data, whilst you are not allowed to edit them; 2. ACCESS IN PROGRAMMING (READING AND WRITING) MODE allows you to alter stored data and entails: 2.a. pressing the key P for a second (until you hear audible feedback); 2.b. immediately pressing one of the following keys:,,,,, ; 2.c. entering the PASSWORD contained in the sealed envelope supplied with this manual intended for the head of maintenance (see section entitled "ACCESS LEVELS"). IO The yellow LED associated with each key has the following function: - LED lit: access to forms in read-only mode; - LED flashing: access to forms in programming mode (when one of the membrane keys has been pressed in sequence with the "P" key) CONSULTATION MODE (LED on) PROGRAMMING MODE (LED flashing) Consultation of the counter for the unit and its devices regarding the number of compressor start-ups. Sequential reading of the last 100 alarm events. P + P + Access to the reset Screen for the counters and for modification of the threshold values of the counter; access to the Screens connected to standard maintenance operations (manual override of defrosting only for heat pump). To call up forms to set level-2 alarms. IO To consult state of card s inputs and outputs P + IO To access unit configuration and manual controls. To consult clockcalendar and time bands (only if optional clock card is fitted). P + To consult set points P + To call up forms containing functions related to clock card: setting of time bands for unit s switching on and off.. To call up forms to edit set points To consult remote control settings P + To call up forms to set remote commands (issued by remote control or supervisor), standby mode and LAN

12 Programme for Unit ISAISC ACCESS LEVELS What forms appear depends on the chosen configuration (e.g.: forms relating to the hour-meter for heating elements do not appear if the unit is not fitted with said elements). User interaction with the microprocessor is based on 3 levels: 1. CONSULTING MODE consisting in displaying parameters and reading the following data: current time and date (only if system features a clock card); environmental conditions; values measured by sensors connected to system; operating parameter set points; logged alarm events (with time and date of event only if system features a clock card). 2. OPERATING PARAMETERS PROGRAMMING MODE, via which you can edit settings for: : thresholds for the number of hours of operation accumulated by individual components at which servicing is requested; : alarm addressing; : clockcalendar and time bands; : operating parameters; : parameters for remote controls, local area network, supervision and rotation between units. This level is accessible with the "SETTINGS" password. 3. CONFIGURATION PARAMETERS and MANUAL CONTROL PROGRAMMING MODE, via which the unit s various components can be run manually (regardless of environmental conditions) and the following operations performed: IO : setting unit type and configuring devices connected, editing passwords, operations on data in the microprocessor s memory; This level is only accessible by entering the "CONFIGURATIONS""SERVICE" password contained in the sealed envelope supplied with this instruction manual intended for the head of maintenance

13 Programme for Unit ISAISC EDITING PARAMETERS Setting andor configuration parameters in a subroutine (set points, differential ) are edited as follows: 1. call up the forms in programming mode; 2. use the or key to select the form containing the parameter; the cursor ( _) flashes in the top left corner; 3. press the key to move the cursor onto the parameter to be edited; 4. edit the value of the parameter - whether numerical or Boolean (YESNO) - using the or key (numerical values can only be edited within the controller s set range); 5. lastly, press the key to confirm the value. To return to the main form, press the key. When configuring the unit s hardware, on the other hand, pressing the key just once calls up the initial "Hardware Configuration" menu (Screen 180); To edit parameters on other forms, keep pressing the key until the cursor is positioned at the start of the first line. Then press the or key to move to the desired form

14 Programme for Unit ISAISC PROGRAMME VERSION By pressing the key, you can view the version of the control programme contained in the Flash EPROM. This information is essential when you want to add a new unit to a group of units connected in a Local Area Network as all programmes of units connected with each other in a LAN must have the same version. When contacting a service centre, it is important to quote the version of the control programme contained in the Flash EPROM accurately. Program Version ISA ST021@N2015T2A00 LAN: Unita n. 1 (Screen 135) Vers. Date Bios: Boot: (Screen 136) # SPECIAL FEATURES In some programme versions, pressing the # key displays a number of special features tailored to the customer s specifications. Special features, where included, may be illustrated in the APPENDIX. P + HOUR-METER READING AND PROGRAMMING This part of the programme is used to determine service intervals for the unit s components: when the device in question exceeds the hours of operation threshold indicated, the microprocessor reports the service request by activating the alarm condition and sending the SERV message up on the main form. There are also two forms featuring the number of times the compressor starts (with the option of resetting the count). The forms give the number of hours accumulated and operation thresholds. To edit limits andor reset the hourmeter, you must call up the subroutine in programming mode. The functions regard the following unit components: Access to 1. Compressors; Settings 2. Water circulation pumps; P + Enter Password : 3. Compressors starting number; _ Command manual Defrost circuit; (screen 150)

15 Programme for Unit ISAISC For each, you can: read the accumulated number of hours of duty; set operation thresholds - setting the threshold to 0 inhibits the SERVICE request warning; reset the hour-meter (RESET = "OK"), e.g. once the component has been serviced andor replaced. Parameters can only be edited within the permissible setting ranges. The screen 25 feature the progressive number of starts of the unit s compressors, with the option of resetting the count. COMPRESSOR 1 Tot. Run Hours Limit H Reset -- (Screen 20) COMPRESSOR 2 Tot. Run Hours Limit H Reset -- (Screen 21) PUMP 1 Tot. Run Hours Limit H Reset -- (Screen 22) PUMP 2 Tot. Run Hours Limit H Reset -- (Screen 23) PUMP FC Tot. Run Hours Limit H Reset -- (Screen 24) Starting Number Compr res. Compr res. (Screen 25) Minimun Run Time Err Compressor Compressor (Screen 26) Manual Defrost Circ.1 Defrost - No (Screen 27)

16 Programme for Unit ISAISC IO CONSULTING INPUT AND OUTPUT STATES This part of the programme, which can be called up directly by pressing the IO key, allows you to check the state of the card s inputs and outputs. The codes given on the display are the same ones used to identify components in the unit and in the relevant literature (wiring diagrams, ). 1. Digital inputs (ID1 - ID14): Remote On-Off = On-Off remote contact SO1SO2 = Oil pressure sensor compressor HP1-TP1 = high pressure switch for circuit 1 and thermo protector for compressor 1 HP2-TP2 = high pressure switch for circuit 1 and thermo protector for compressor 2 Heat Recover = start up contact of heat recovery AL Inverter = alarm contact inverter compressor THPES = thermo protectors for the water circulation pump Free-Cooling FS = flow meter THPE1-2 = thermo protectors for the water circulation pump Change SETP. = commutation contact for the working setpoint Ter. Fan = thermo protectors fan RSF = phase sequence relay I.V.LimitSw. = limit switch free-cooling valve Inv.Pump Al. = alarm contact inverter pump Rem. SUMWIN = commutation contact for SUMMERWINTER operation 2. Analogue inputs (B1 - B8) (Screen 44-45) Supplies the readings of the TEMPERATURE and PRESSURE sensors connected to the board. 3. Analogue outputs digital outputs (C1 - C13) CC1,CC2 = compressor contacts CPE1,CPE2 = pump contacts ETV Cond. = solenoid valves condensing circuit RAT-RAC = anti-freeze heaters C1 CC1 C2 CC2 A = digital output for A type alarm signals C3 ETV Cond. ETF1,ETF2 = solenoid valves on 2 circuits C4 CPFC CPFC = free-cooling pump control (Screen 46-49) VO1- VO2 = solenoid valve, compressor oil VIC = cycle inversion valve FC STDBY = Free-cooling valve contact Isol Valve = isolating valve contact C13 'B' s B = digital output for B type alarm signals 4. Analogue outputs (Y1-Y4) (Screens 49-50) Y1 Fan ramp.= Radial fan speed Y2 Comp. Inv = control signal of the inverter compressor Y3 Fan ramp. = axial fan speed axial Y4 Pump Inv. = control signal of the inverter pump 5. UpCOe Expansion Analogue inputs (B1 B4) Supplies the readings of the sensors connected to the UpCOE expansion board. B1 = Water inlet pressure B2 = Water outlet pressure B3 = Rem Offset summer setpoint IO ID1 Remote OnOff C ID2 ID3 ID4 HP1-TP1(DGT1) C (Screen 40-43) A = input open C = input closed B1 Press.Cond B2 -- B3 Press.Evap B4 -- Y2 --- Y3 --- Y4 --- pcoe Expansion Board. B1 W.In Pres B2 W.Out Pre (Screens 51) When a sensor is added or an optional sensor is added connected to the card, the "HARDWARE SETUP" command must be executed, which enables the card to read the inputs and outputs. Serial card RS-485 and the clock card are exceptions to this rule OFF OFF OFF OFF OFF

17 Programme for Unit ISAISC P + IO CONFIGURING THE UNIT S DEVICES: "Hardware Config." You enter the unit s configuration mode by pressing programming key repeatedly until you hear a short audible signal and then pressing the IO key (waiting no more than a few seconds). Once you have entered the password, the relevant form is called up, comprising three options: move the cursor vertically to the line you are interested in using the P _ Hardware Config. Delay Settings Manual Control EVX Parameters (Screen 180) key and then call up the forms by pressing the key. HARDWARE CONFIGURATION The unit control programme needs to be configured, i.e. adapted to the unit it is installed in. During this stage, you must define all elements making up the unit that the microprocessor will be required to control. This operation is generally only required when the controller is installed actually on the unit, in which case, therefore, it is performed at the factory during final testing. Nonetheless, configuration may be required as a result of later changes made to the unit. Consequently, forms concerning configuration appear in English and are intended for use by service engineers only. P + IO Access to Access to _Hardware Config. Configuration Menu Configuration Menu Delay Settings Enter Password: Enter Password: Manual Control _00000 _* * * * * EVX Parameters (Screen 160) (Screen 160) (Screen 180) * * * * *: Enter the "SERVICE" password ("CONFIGURATION PASSWORD") to be found in the envelope supplied with this manual. SCREEN 60 - DEVICES CONNECTED TO THE UNIT Allows you to: set unit type depending on whether the unit in question is a: UNIT Type: - standard-version chiller ERISAC chiller for low temperatures Heat Recover: NO - heat pump - chiller with free cooling activate the heat recovery mode if included. Only some of the following forms will be displayed, depending on the type of unit. (Screen 60) SCREEN 61 CONFIGURATION OF FAN SPEED REGULATOR Screen 61 allows setting of the type of speed regulator used for the fans installed. Fans EC With Electronical Commutated Motor SCREEN 62 CONFIGURATION OF COMPRESSOR SPEED REGULATOR Screen 62 allows activation of the speed regulation of the compressor via the inverter. (Screen 61) Compressor variable Speed: NO (Screen 62)

18 Programme for Unit ISAISC SCREEN 63 PID SETTINGS Screen 63 allows the proportional band, integral time regulation and derivative time to be set. SCREEN 64 WINTER PID SETTINGS Screen 63 allows the proportional band, integral time regulation to be set of the winter mode SCREEN 65 WATER PUMP WITH INVERTER CONFIGURATION Screen 65 allows to configure the functioning of the water circulation pump with the aid of the inverter. The frequency adjustment can be managed in two different logical: Autoadaptive logical: With logic Auto the unit is equipped with additional pressure transducers on the chiller water circuit. Once the chiller is installed the required available pressure can be defined on the unit (see screen 65). The information from the sensors permits to the Uniflair control board to maintain this setting in all the different pressure drop conditions, and therefore constant water flow through the evaporator even 2-way valve or separate hydraulic circuits are installed. This solution is useful when the pressure drop of the system can vary during the chiller operation like installations where the CRACs are fitted with 2-way valves or there are separate water circuits. The control board monitors the pressure drop through the unit and it modify the inverter speed and, consequently, the head pressure of the pump. The settings for the required head pressure can be done directly on the local user terminal or on the remote user terminal of the unit or from the Building Management System. PID Settings Prop Band: C 00.0 Int. Time: sec 000 Der. Time sec 000 (Screen 63) Inverter PID Sett. Winter Mode Prop Band: C 00.0 Int. Time: sec 000 (Screen 64) Circulator Pumps: 1 Inverter: Y CTRL Head Press: MAN Inverter Req.% 100 (Screen 65) Circulator Pumps: 1 Inverter: Y CTRL Head Press:AUTO Head Press. kpa: 150 Flexible logical: With the logic MAN, the Uniflair control board permits to set a value for the inverter speed and, consequently, for the water flow. The unit operates with this water flow until it is not modified. Modifications can be done directly on the local user terminal (see screen 65) or on the remote user terminal of the unit or from the Building Management System. This solution is necessary when the pressure drop of the system is not completely known or an extension is scheduled, expected or simply possible. Once the chiller is installed the pressure drop water flow is setted on the control board according the site features and the required deltat on the inlet water temperatures. In the event of any modifications on the site the operating parameters can be changed in order to adjust the correct operation of the units

19 Programme for Unit ISAISC SCREEN 66 PID PARAMETER CONFIGURATION Screen 66 is displayed when the inverter adjustment mode of the water pump is set in AUTO. The pressure difference between water input and output (useful head), is processed by a PID algorithm that generates a 0-10V ramp, useful for controlling the inverter of the water pump. In this way, should the load losses to the utilities change, the system reacts by modifying the water flow rate to the load. Allows setting: - The available head set point to be maintained, calculating the difference between the water input and water output pressures. When the head (DP out-in unit) is greater than the wanted set, the pump starts decreasing the water flow rate; - The proportional band - The integral time - The derivative time ATTENTION: to avoid system hunting, it is advised to set the proportional band values and integral time relatively high. SCREEN 67 PUMP SPEED CONFIGURATION IN MANUAL MODE Screen 67 is displayed when the water pump inverter adjustment mode is set to MAN. By setting the value to YES, the pump speed reduction is enabled when the heat load is low. When the compressor with inverter operates above 33 %, the pump operates at maximum speed; on the other hand,when it operates below 33% or is off, the speed starts decreasing down to its minimum value. The maximum and minimum values can be set in the corresponding screen in the OPERATING PARAMETERS menu Set Head Pres: 150kPa Read Value: 100kPa Prop.Band: 100 Int.T.120s Der.T.00s (Screen 66) Circulation Pump Speed Contr.Low Load N (Screen 67) Circulation Pump Max. W.Flow R: 100.0% Min. W.FlowR: 090.0% (Screen 130) SCREEN 68 LAN HEAD CONTROL CONFIGURATION Screen 68 is displayed when the inverter adjustment mode of the water pump is set in AUTO. In the event several units are connected to the LAN, you can choose whether the head control must be carried out on the local average of the read values. If head control is attributed to the mean values of the connected units and a LAN shortage occurs, all the pumps reach their maximum speed value. The indications provided by the pressure sensor and the adjustments in progress can be read in the screens of the synoptic panel. SCREEN 69 CONFIGURATION OF THE REFRIGERANT Screen 69 allows setting of the type of refrigerant gas used and activation of the electronic expansion valve present with associated model details. SCREEN 70 COOLING SETPOINT LIMITS Allows the minimum and maximum setpoint limits to be set. Usage of Pres.Values Mode: Local (Screen 68) W. press. In kpa 053 W. press. Out kpa 053 T. Head Mean kpa 053 Pump 100% Refrig.Circ.Option Gas Type: R410a EXV valves: Y DANFOSS ETS (Screen 69) Cool.SetPoint Limits Min Value C 06.0 Max Value C 13.0 (Screen 70)

20 Programme for Unit ISAISC SCREEN 71 FREQUENCY OF THE ELECTRIC NETWORK This Screen allows the frequency of the electric network. Mains Frequency 50Hz SCREEN 72 FAN REGULATION This Screen and the ones which follow it allow the fan modulation parameters to be set on the basis of the condensing pressure: by setting the low-noise mode, the fan speed regulation is based on a ramp of 3 steps rather than 2, as illustrated in the diagrams which follow. (Screen 71) Fan Speed Setting Low Noise Mode N Min. speed % 12 Max. speed % 100 (Screen 72) Fan Speed Standard modulating control 100% Min. Vel. Fan Off Fan On Ramp begin Ramp end Press. Cond. SCREEN 73 FAN REGULATION Screen 73 allows the parameters for fan modulation to be set depending on the condensation pressure when in Chiller mode. SCREEN 74 FAN REGULATION This Screen allows the parameters relating to the 2nd fan modulation regulation step in low noise mode. Fan Speed Reg. (S) On: 50 C Off: 00 C Ramp begin. 00 C Ramp ending 20 C (Screen 73) Fan Speed Reg. (S) LowNoise (High Ramp) Ramp2 begin. 52 C Ramp2 ending 58 C (Screen 74) Fan Speed 100% Modulating control in low-noise mode Max Vel. Min Vel. Fan Off Fan On Ramp1 begin Ramp1 end Ramp2 begin Ramp2 end Press. Cond. SCREEN 75 FAN REGULATION Screen 75 allows the parameters for fan modulation to be set depending on the condensation pressure in heat pump mode. Fan Speed Reg. (W) On: 70 C Off: 80 C Ramp begin. 50 C Ramp ending 20 C (Screen 75)

21 Programme for Unit ISAISC SCREEN 76 FAN REGULATION IN FREE-COOLING This Screen allows the fan speed parameters to be set in free-cooling mode with partial or total signal. SCREEN 77 SETPOINT FREE-COOLING ACTIVATION In free-cooling units, this Screen appears which enables the activation delta T to be set. When the external air temperature is lower than the inlet water temperature, the unit enters free-cooling mode: the water circulation pump activates by means of the free-cooling coil and the compressor steps change in order to increase the efficiency of the air-water exchanger. SCREEN 78 TOTAL FREE-COOLING SETPOINT ACTIVATION Screen 78 allows setting of the delta T between the inlet and outlet water temperature to enable total free-cooling. SCREEN 79 ACTIVATION OF FREE-COOLING WITH STAND-BY UNIT Screen 79 allows management of intelligent free-cooling with the unit in stand-by, when there are more units connected to the LAN. FC Parameters Max Speed Setting Total FC Mode % 100 Partial FC Mode % 066 (Screen 76) FC Parameters DT Water IN-Ambient SetPoint C 05.0 (Screen 77) FC Parameters Total FC Mode DT Water In-Out 00.0 C (Screen 78) FC on Stand-by Unit (Hydr.Connected) Enabled: N (Screen 79) In the diagram shown below, an example is shown where unit 1 is in stand-by and units 2 and 3 are running and connected with intelligent free-cooling. If the external temperature is able to activate free-cooling, the control system of the units running controls the start-up of the fans of the unit in stand-by (1) and the start-up of the freecooling pump (C) of the units which are running (2 and 3). In this way the water is sent to all of the available freecooling coils. A : Main onboard pump B : Free-cooling coil C : Free-cooling pump D : Evaporator E : Non return valve : Supplied by Manufacturer

22 Programme for Unit ISAISC SCREEN 80 ANTI-FREEZE FUNCTION This Screen gives the choice of activating the circulation pump or not through the free-cooling coils in anti-freeze operation. If this function is activated in the stand by unit, the FC pump is switched on as soon as the external temperature falls below 4,5 C; it turns off when it rises above 5.5 C. N.B.: Only a correct mix of glycol ensures that the coils do not freeze if the external temperature falls below zero: the function indicated cannot guarantee the integrity of the coil, above all in freezing temperatures. SCREEN 81 ANTI-FREEZE The mask 81 sets the percentage of glycol in the circuit water and set the setpoint to activate the antifreeze. Antifreeze Function FC Pump Activation On Stand-by: N (Screen 80) Antifreeze Glycol %00 Setpoint AF C 00.0 SCREEN 82 WATER ISOLATING VALVE CONTROL Screen 82 allows activation of the water isolating valve control by setting: activation movement control (switch for end of run or run time) late alarm activation (water flow absence) (Screen 81) Control of Motorised Isolating Valve: No CtrlMode: LimitSwitch Delay s 000 Or Control of Motorised Isolating Valve: No CtrlMode: Timed ON Delay Time s 000 SCREEN 83 READING RANGE REGULATION Screen 83 allows the reading range of the high pressure transducer to be set. (Screen 82) High Press Sensor Range Begin kpa 0000 Range End kpa 0000 SCREEN 84 READING RANGE REGULATION Screen 84 allows the reading range of the low pressure transducer to be set. (Screen 83) Low Press Sensor Range Begin kpa 0000 Range End kpa 0000 SCREEN 85 READING RANGE ADJUSTMENT Screen 85 allows setting the reading range of the water pressure sensors when the pump speed adjustment function is enabled according to the head read. (Screen 84) Water Press Sensor Range Begin kpa 0000 Range End kpa 0000 SCREEN 8691 SENSOR ADJUSTMENT Screen 86 and the following Screens allow the temperature sensors which can be found in the unit to be adjusted ( read value ), when there is a difference between the value measured by the probe and the actual temperature, measured by a precision instrument. (Screen 85) Offset Adj. Cond. 1 Temp Sensor Read Value C 00.0 Adjustement 00.0 (Screens 8691)

23 Programme for Unit ISAISC SCREEN 9293 WATER PRESSURE SENSOR ADJUSTMENT Screen 92 and the following Screens allow the water pressure sensors which can be found in the unit to be adjusted ( read value ), when there is a difference between the value measured by the probe and the actual temperature, measured by a precision instrument. SCREEN 94 REMOTE SETPOINT 1 Screen 94 allows setting of the remote setpoint function through the UpCOE expansion board or the RS485 serial card. Offset Adj. Water Pressure Inlet Read Value C 00.0 Adjustment 00.0 (Screens 9293) Set Point Remote Offset (positive) Y By 0-10V Signal With pcoe Exp.Board Or Set Point Remote Offset (positive) Y Serial RS485 With RS485 Card SCREEN 95 REMOTE SETPOINT 2 Screen 95 allows the relative control parameters of the remote modulating control of the unit operating values to be set. The zero value is adjusted automatically using the Hardware setup function. SCREEN 96 SETPOINT REMOTO 3 Screen 96 visible when the offset control is configured in By Serial RS485 in screen 94 and allows setting of the remote setpoint through the supervision variable Integer 49. SCREEN 97 TRASMISSION REMOTE SETPOINT The mask 97 allows the transmission network capability plan offset from the machine with an address 1 to all the others in the network. SCREEN 98 HEAT RECOVERY Screen 98 allows setting of the delta T between the condensation temperature and the water temperature for heat recovery. (Screen 94) Set Point Remote Offset (positive) Zero Adj. mv V Signal = C 00.0 (Screen 95) Set Point Remote Offset (positive) Integer =00.0 (Screen 96) Set Point Remote From Unit 1 to All Unit by LAN No (Screen 97) Heat Recovery DT Tcond Twater C 00.0 (Screen 98)

24 Programme for Unit ISAISC SCREEN 99 EMERGENCY HEAT RECOVERY Screen 99 allows activation of the Quick Start of the compressors after a power supply interruption of at least 3 minutes and if the chilled water outlet temperature is above both the setpoint and the settable value. SCREEN 100 REFRIGERANT CHARGE CHECK Screen 100 allows activation of the refrigerant charge check of the circuit. Emergency Recovery Enable : N Activ.At Power ON if Twout > SetP + C 00.0 (Screen 99) Refrigerant charge Check : Disattiva SCREEN 101 BUZZER ACTIVATION TIME Screen 101 allows the maximum activation time of the buzzer activation when an alarm is active to be set. (Screen 100) Buzzer Conf. Activat.Time min 05 (0=never;99=ever) SCREEN 102 SETTING THE ACCESS PASSWORD Screen 102 allows the access password to be set: - At the settings ("SETTINGS" password). See paragraph "ACCESS LEVEL", point 2.; - At the configuration ("CONFIGURATIONS" password or "SERVICE" password). See paragraph "ACCESS LEVEL, point 3. (Screen 101) SET-UP PASWORD FOR ACCESSING TO : SETTINGS SERVICE (Screen 102) Since access to the SERVICE menu is not granted unless you know the relevant password, we recommend you write the new password down before changing the existing one. Screen 103, allows the data contained in the microprocessor s EEPROM to be altered. PROGRAMME SETUP. This operation is performed automatically if the programme is replaced. It may prove useful if you find data (setpoints, configurations etc.) are contaminated as it allows you to clear the memory (including data concerning the unit s HARDWARE configuration): all setpoints are automatically restored to their respective factory settings (see section entitled "DEFAULT VALUES"). Following this operation, the controller must be reconfigured and you will need to adjust any setpoints that are to have a value other than the default value. PROGRAM SET-UP AL. PAGE CLEAR-UP HARDWARE SET UP (Screen 103) PROGRAM SET-UP AL. PAGE CLEAR-UP HARDWARE SET UP Please Wait NO NO NO NO NO NO AL. PAGE CLEAR-UP. By clearing the alarm log, you erase the all alarm events stored in the memory. HARDWARE SET-UP. Used to run an automatic procedure for detecting devices connected to the controller. This operation is useful when you want to add an option to the card, replace a sensor, or when the display features the "NC" message instead of the temperature sensor s reading. To restore factory setpoints and reset other data in the memory (except "Hardware Configuration" parameters), P press keys and at the same time and hold them down for at least 5 seconds. A short audible signal tells you that the operation has been performed successfully

25 Programme for Unit ISAISC DELAY SETTINGS P + IO Access to Access to Configuration Menu Configuration Menu Enter Password: Enter Password: _00000 _* * * * * (Screen 160) (Screen 160) * * * * *: Enter the "SERVICE" password ("CONFIGURATION PASSWORD") to be found in the envelope supplied with this manual. _Hardware Config. Hardware Config. Delay Settings _Delay Settings Manual Control Manual Control EVX Parameters EVX Parameters (Screen 180) (Screen 180) Screen 150 concerns initial transient behaviour and gives you the option of setting: length of delay before the unit restarts after a power cut ( POWER ON DELAY ) - it is required to prevent simultaneous starts in multiple installations; In LAN-connected units, a progressive start sequence (unit 1, unit 2, ) is run automatically, with 5-second intervals between one unit and the next. length of time between the unit switching on and control starting ( START TRANS. ) - this is the initial period deemed necessary to give the control system time to stabilize. During this period, the FS water flow-switch reading is also disregarded. This allows the unit to start without generating the "No waterflow" alarm, especially in units with a motorized damper. delay - from when the unit starts - before environmental condition alarms are reported ( T. Al Delay ). Screen 151 allows the anti-hunting time constant to be set to avoid excessive differences in temperature. The greater the heat inertia of the room being airconditioned, the greater this value must be. Screen 152 allows the water flow-switch (FS) reading parameters to be set: the first parameter is the acquisition delay for the signal issued by the flow-switch when the unit is started, whilst the second parameter is the length of the delay before the alarm, if there is one, is reported after the pump starts. Lastly, the third parameter (only displayed if there are two pumps) is the rotation time for the pumps operation. (1) The Screen 153 allows the compressor times to be set, i.e.: 1. minimum time between two starts for a single compressor; 2. minimum time each compressor stays on; 3. minimum time each compressor stays off; 4. minimum time between two consecutive starts by different compressors; The Screen 154 allows the Low Pressure delay to be set, i.e.: LP-Start Delay: initial period - from when the compressor starts - during which the low-pressure pressure switch reading is disregarded. It enables the compressor to start even in a harsh climate. LP-Run Delay: Low Pressure delay the normal working Screen 155 allows the activation delay of the free-cooling pump to be set for when the FC water valve opens. Power On Delay s 000 Start Trans. s 20 Temp. Al. Delay min 15 (Screen 150) Anti-Hunting Time Constant of Water Temp. Control s 30 (Screen 151) FS Start Delay s 10 FS Run Delay s 03 Pump Changeover h 12 (Screen 152) Compr. Timing Cycle min. s 000 Run s 000 Off. s 000 Between 2 Diff. s 000 (Screen 153) Compr. Timing LP-Start Delay s 000 LP-Run Delay s 000 (Screen 154) Free-Cooling Pump: Start Delay: s 150 (Screen 155)

26 Programme for Unit ISAISC MANUAL CONTROL During regular operation, all components the unit is fitted with are managed automatically. Nonetheless, to make maintenance and adjusting work easier, or if there is an emergency, individual components can be switched on using the manual override feature, regardless of the control process. In particular, it is possible to: switch the unit onoff in manual mode switch the compressors onoff swap the two pumps over switch on off the FC pump control the ramp for the fans modulating control. The safety devices are also activated during manual operation. To edit parameter values, you must call up the "MANUAL CONTROL" subroutine from the "HARDWARE" menu until you reach form 160 prompting you to enter the CONFIGURATION password. P + IO Access to Access to Configuration Menu Configuration Menu Enter Password: Enter Password: _00000 _* * * * * (Screen 160) (Screen 160) * * * * *: Introdurre la parola chiave "SERVICE" ("CONFIGURATION PASSWORD") riportata nella busta allegata al presente manuale. _Hardware Config. Hardware Config. Delay Settings Delay Settings Manual Control _Manual Control EVX Parameters EVX Parameters (Screen 180) (Screen 180) AUTOMATIC MANUAL OPERATING MODE (SCREENS ) To alter the operating mode of a component, simply move the cursor onto the relevant line, press the or key to change from automatic ("No") to manual ("Yes") or vice versa, and confirm by pressing the key. MANUAL OVERRIDE UNIT START-UP N COMPRESSOR 1 N COMPRESSOR 2 N (Screen 170) Via form 103, you can also set the degree that devices connected to analogue output (Screen 171) Y1, Y2, Y3 and Y4 must open, given as a percentage. When you use manual override to start one or more components, field D on the STATUS form reads MAN. MANUAL OVERRIDE PUMP 1 Y PUMP 2 N Switchover P1-2 N MANUAL OVERRIDE Free-Cooling Pump N (Screen 172) MANUAL OVERRIDE FAN SPEED % 000 OUT RAMP % 000 RAMP %:Y1 000 Y2 000 (Screen 173)

27 Programme for Unit ISAISC EXV PARAMETERS P + IO Access to Access to Configuration Menu Configuration Menu Enter Password: Enter Password: _00000 _* * * * * (screen 160) (screen 160) * * * * *: Enter the "SERVICE" password ("CONFIGURATION PASSWORD") to be found in the envelope supplied with this manual. _Hardware Config. Hardware Config. EXV Work. Param. Delay Settings Delay Settings _ Circuit 1 Values Manual Control Manual Control Circuit 2 Values EVX Parameters _EVX Parameters Settings (screen 180) (screen 180) (screen 210) The screens shown here allow the read only data and some operating parameters of the electronic expansion valve on circuit 1 to be displayed. The screens are the same for the valve on circuit 2, but it is necessary to enter the screen dedicated to Circuit 2 Valves Capacity req. % 000 Opening steps n 0000 Evap. Press. bar 00.0 Evap. Temp. C 00.0 (screen 211) Suct. Temp. C 00.0 SuperHeat C 00.0 SSH Set C 00.0 FW vers. HW: 000 SW: 000 (screen 212) PROBES OFFSET ADJ. C.1 Evap. Pressure Read Value bar 00.0 Adjustment bar 00.0 (screen 213) PROBES OFFSET ADJ. C.1 Suction Temp. Read Value C 00.0 Adjustment C 00.0 (screen 214) C.1 MANUAL CONTROL Opening steps 0000 Mode Aut (screen 215)

28 Programme for Unit ISAISC _Hardware Config. Hardware Config. EXV Work. Param. Delay Settings Delay Settings Circuit 1 Values Manual Control Manual Control Circuit 2 Values EVX Parameters _EVX Parameters _Settings (screen 180) (screen 180) (screen 210) Screen 230 allows the type of electronic expansion valve to be set. Screen 231 allows the subcooling temperature to be set in the various operating modes. Screen 232 allows the Proportional Gain to be set in the various operating modes. Screen 233 allows the set point of the Integral Time of the various operating modes to be set. Screen 234 allows the maximum number of opening steps and the set point of the neutral band of the subcooling. Screen 235 allows the set point of the Derivative time and the maximum suction temperature to be set. Screen 236 allows the relationship in % of the power of the electronic expansion valve and the cooling circuit to be set where it has been inserted in the various operating modes described. Screen allows the limits of low subcooling to be set: integral time and temperature in the various operating modes. EXV Driver Set Valve: SEI50-SEH175 Refriger. Gas: R410 (screen 230) SSH Set (Auto: 07.0) Chiller Mode C 05.0 Heating Mode C 05.0 Defrost Mode C 06.0 (screen 231) Prop. Gain (Auto 28.0) Chiller Mode 35.0 Heating Mode 13.0 Defrost Mode 19.0 (screen 232) Integr. Time (A. s 030) Chiller Mode s 028 Heating Mode s 028 Defrost Mode s 035 (screen 233) Overclos. Steps 3000 SSH Dead Zone C 0.0 (Auto: 0.0) (screen 234) Derivat. Time s 01.5 (Auto: 01.5) Max Suct. T. C 30.0 (Auto: 01.5) (screen 235) Circ.EXV Ratio Chiller Mode 080 HP Mode 040 Defrost Mode 000 (screen 236) SSH LowL. (Auto: 02.5) Chiller Mode C 00.1 Heating Mode C 00.1 Defrost Mode C 00.1 (screen 237) SSH Low Limit Integr. time s 02.0 (Auto: 01.0) (screen 238)

29 Programme for Unit ISAISC Screen 239 allows the setpoints of the MOP and LOP to be set in chiller mode. Screen 240 allows the start up delay of the MOP and the integral time to be set. Screen 241 allows the integral time of the LOP to be set. Screen 242 allows the setpoints of the MOP and LOP to be set in defrost mode. Screen 243 allows the setpoints of the MOP, LOP and kp factor to be set in heat pump mode. Screen 244 allows the start and finish of the range of the evaporating pressure sensor to be set. Screen 245 allows the delay time regarding the activation of the following parameter alarms to be set : Low subcooling, high suction temperature, LOP and MOP. Screen 246 allows the delay time regarding the activation of the Pressure sensor failure to be set for the compressor start-up and during normal operation. Chiller Mode MOP Set C 15.0 LOP Set C 00.0 (maschera 239) MOP Start Up Dly s 030 (Auto: 060) Integr. Time s 04.0 (Auto: 02.5) (maschera 240) LOP PROTECTION Integr. Time s 01.5 (Auto: 01.5) (maschera 241) Defrost Mode MOP Set C 00.0 LOP Set C 00.0 (maschera 242) Heating Mode MOP Set C 00.0 LOP Set C 00.0 Dynamic kp factor NO (maschera 243) Evap. Press. Sensor Range Begin. bar Range End bar 09.0 (maschera 244) ALARM DELAY (s) Low SSH 0120 High Suct. T LOP 0000 MOP 0000 (maschera 245) ALARM DELAY (s) Press. Probe Failure: At Compr. Start. 000 At Normal Working 00 (maschera 246)

30 Programme for Unit ISAISC P + UNIT S REMOTE CONTROL As an alternative, the unit can be started and stopped by means of: 1. a remote contact (or "remote control"); 2. a "supervision system" connected to the microprocessor with a serial cable. The microprocessor nonetheless retains control of the unit s resources. ONOFF VIA REMOTE CONTACT: the closing of a remote contact is responsible for starting the unit. The N.O. contact is voltage-free and connected to the master card (see wiring diagram). In units with a standard control programme, digital input 1 is the one specifically used for the onoff contact. SUPERVISION SYSTEM: a supervision system exchanges data via a serial cable with the unit s master card, which is controlled and monitored from a remote location. An optional Serial Card is available for this purpose, used to enable optoisolated interfacing with an RS-485 network for data transfer (see manuals for Supervision Systems). P + Access to Settings Enter Password _00000 (Screen 150) The Screen 140 you can establish whether the unit is slaved to a remote control. More specifically, you can set: the remote onoff command via clean contact ( IO via Contact ); the remote onoff command from a supervision system by means of RS-485 serial line ( IO via Serial ). Being mutually exclusive, if the setting is "IO via Serial Yes", the "IO via Contact" option is automatically disabled. Moreover, with Screen 140 it is possible to set (only in heat pumps) the activation of the SUMMERWINTER changeover remotely by means of a contact connected to the digital input 14 (see the electrical diagram attached to the unit). IO via Contact N IO via Serial N SW via Contact Y (Screen 140) SETTING TRANSMISSION PARAMETERS FOR SUPERVISION Screen 141 allows the basic parameters to be set (first three lines) for switching via supervision, i.e. 1. serial address of the unit connected to the serial supervision network (must match serial address set in supervision programme); 2. data transfer rate (Ser. speed): 1200, 2400, 4800, 9600 and for RS protocol type (standard or Modbus). Serial Addr. : 001 Serial Speed: 1200 Protocol : Standard LAN :Unit Number 01 (Screen 141) In addition, the fourth line (should the unit be ready for connection in a Local Area Network) is for setting the number of units connected in the LAN. Remember that to prepare the unit for connection in a LAN, it must be assigned a LAN address other than 0 as indicated in the relevant LAN guide

31 Programme for Unit ISAISC UNIT IN LOCAL AREA NETWORK (LAN) Screen 142 concerns parameters for automatic rotation between running units and standby units. Via said form, you can determine: whether to activate this management feature (YesNo). When automatic rotation ON is enabled, you have to press the OFF key on the unit with the lowest address in the network. automatic cycle time between one inversion and the next ( CYCLE TIME ) - if it has the value zero (" 0 "), the controller runs a test, rotating units at two-minute intervals. the number of units on standby ( Num. UNIT STAND-BY ). Autom. Switch-over on Std-by Unit N Cycle Time h 168 N. Stand-by units N 1 (Screen 142) Automatic rotation can be executed: on a time basis (based on the above-mentioned cycle-time); subsequent to a level-2 alarm, i.e. subsequent to an alarm for which AR or BR has been set in the alarm addressing forms (see relevant section herein). Screen 143 allows the unit operating in rotation to be switched-off, only when the reserve unit has activated its own water circulation pump. Screen 144, which is only seen if the local network is configured, allows the temperature regulation to be set in three different ways: - Independently: the unit independently controls the water temperature regulation; - Connected: the unit control carries out the water temperature control by calculating the average temperature of the units which are operating. - Cascading: the control carries out an off-set on the regulation set point according to the units connected in the network therefore allowing the units to be switched on in succession. Each unit maintains its own regulation timings. Screen 145, which is only displayed if the local area network is configured, allows the unit operation to be managed with the mean temperature value measured in the room or with the "local" value measured just by the sensor inside the unit: - Mode: Local Unit control is based on temperature value detected by sensors on the actual air-conditioner. - Mode: Media Unit control is based on mean temperature value detected by sensors on active units connected in the local area network. If the difference between the mean value and its own sensor reading exceeds the "MEDIALOC.DIFF." value (default setting 2 C), the controller automatically switches from "MEAN" mode to "LOCAL" mode. Run. Unit in Rotat. Switching OFF After Switch. ON Stand-by Enabled: N (maschera 143) Reg.Step Calling Mode: Standalone (Screen 144) Usage of. Tamp. values Model : local - mean Aut.Changeover MeanLoc. diff. C 2.0 (Screen 145)

32 Programme for Unit ISAISC P + WORKING PARAMETERS All variables are factory set to enable the controller to work correctly. Setpoints and other setting parameters can be consulted by pressing the key (no parameter editing permitted in this access mode). To edit values, you will need to enter programming mode and enter the "SETTINGS" password (Screen 150). COOLING SETPOINT (SCREEN 120) No settings can be made to Screen 120. It gives the delivery water temperature setpoint to which the unit is referring for control purposes. The third and fourth line feature a message, where applicable, indicating the origin of the setpoint value when it deviates from the standard setting: - Compens. T.ext.: indicates that the setpoint given on the second line is calculated based on external temperature (based on parameters set in the forms described further on); - SetPoint OpT.: indicates that the second setpoint is active by virtue of the contact at digital input 10 switching; - Setback Mode SetP.: indicates that the setback mode setpoint is active; - Active SetP.: indicates that the setpoint is calculated based on the offset read by analogue input 3 (option only possible if there is no evaporating pressure sensor connected). COOLING SETPOINT (SCREEN 121) Screen 121 allows the main cooling setpoint to be set and, where applicable, the second setpoint is activated when a contact connected to digital input 10 switches. HEAT PUMP SETPOINT (SCREEN 122) Screen 122 only allows the water temperature setpoint in winter mode to be set, i.e. when the unit is working as a heat pump (hence this form only appears if the unit is a heat pump). SUMMER COMPENSATION (SCREEN 123) Screen 123 allows summer compensation to be set for the cooling setpoint depending on external temperature based on a ramp whose coordinates (of the two angular points P1 and P2) must be entered here. Set Point P2 P + Access to Settings Enter Password :00000 (Screen 150) Water OUT Regul. Active SetP. C 07.0 Mode: Ext.Temp.Compens. (Screen 120) Wat.Out Summer Reg. Std. SetP. C 00.0 Opt SetP. C 00.0 Max. Isteresi C 00.0 (Screen 121) Wat.Out Winter Reg. Set. Point C 00.0 Max. Hysteresi C 00.0 (Screen 122) Set Point Compens.: NO Summ. SetP. Ext.T P C to 00.0 C P C to 00.0 C (Screen 123) P1 External Temp

33 Programme for Unit ISAISC WINTER COMPENSATION (SCREEN 124) Screen 124 allows the winter compensation parameters to be set, i.e. heat pump setpoint compensation depending on external temperature. ALARM THRESHOLDS (SCREEN 125 and 126) Screen 125 allows the inlet water temperature alarm thresholds to be set. If the unit is in its heat pump version, the second line reads Water Inlet Summer Temperature to distinguish summer mode thresholds from winter mode ones, which can be set on the Screen 126. Winter Compens. Win. SetP. Ext.T. P C to 00.0 C P C to 00.0 C (Screen 124) e Thresolds Water INLET Temp Min. Temp. C 00.0 Max. Temp. C 00.0 (Screen 125) Thresolds Winter Water IN T. Min. Temp. C 00.0 Max. Temp. C 00.0 (Screen 126) SETBACK MODE Setback mode, which can be activated or deactivated via the keypad, consists in starting the unit automatically when it is idle - but powered - based on the setpoint settable for this operating mode. Basically, setback mode is activated to ensure that environmental conditions are regulated - though in a wider range - even when the system is off. Hence its activation does not depend on signals coming from remote control systems, which it takes priority over. Unit start as a result of setback mode is not considered an alarm condition. BASIC PARAMETERS (SCREEN a) Screen 127 (127a if unit is in its heat pump version) allows the setback mode to be enableddisabled as well as the setpoint for operation whilst said mode is enabled. P + Setback Mode : SetPoint Y C 00.0 (Screen 127) Setback Mode Y Summer SetP. C 00.0 Winter SetP. C 00.0 CYCLIC PUMP START (SCREEN 128) Screen 128 determines operation of the fan water circulation pump whilst setback mode is enabled for a period of 120 seconds. If set to "Yes", the pump is switched on cyclically based on the set time interval. (Screen 127a) Setback Mode Cyclical star Of Pump (s120) Yes Interval min. min. 00 (Screen 128) SET POINT REGULATOR (SCREEN 129) Screen 129 indicates: SetP Std: the base setpoint setting; OffSet Rem: the correction value to add to the setpoint Std; Active Setp: the final setpoint for regulation, active after the correction; MODULATING SET POINT (SCREEN 130) Screen 130 is visible when the pump speed reduction setting is enabled when the heat load is low. See screen 67 of the configuration menu. SetP. Std C 00.0 OffSet rem. C 00.0 Active SetP. C 00.0 (Screen 129) Circulation Pump Max. W.Flow R : 100.0% Min. W.Flow R: 090.0% (Screen 130)

34 Programme for Unit ISAISC SUMMER WINTER SWITCH OVER In the heat pump units it is possible to set the operating season SummerWinter alternatively by means of three possibilities: 1. from the user terminal keyboard; 2. from the digital input ID14 (see electrical diagram attached to the unit); 3. from the supervision system; FROM THE USER TERMINAL KEYBOARD (SCREEN 18) Water OUT T. Screen 18 (if the unit is in heat pump mode) allows the SummerWinter switching to be set. In this case, it is necessary to turn the unit off using the ONOFF key and wait for the unit to stop. From the main Screen press the Up or Down key until (Screen 3) Screen 18 is reached. To change the mode press the ENTER key, change the value by using the UP or DOWN key and press ENTER to confirm. Start up the unit again and the winter setpoint will automatically be used. _ 12:00 MO C10.0 To Start Unit Press On Key Mode: SUMMER To Change Press Enter Key (Screen 18) Mode: SUMMER To Change Press Enter Key (Screen 18) Mode: WINTER To Change Press Enter Key (Screen 18) FROM DIGITAL INPUT 14 (SCREEN 140) Screen 140 (if the unit is in heat pump mode) allows the SummerWinter switching to be set. (N.O. Summer; N.C. Winter) Screen 18 will display the operating mode from the remote control. _ Mode: WINTER To Change Press Enter Key (Screen 18) P + IO via Contact N IO via Serial N SW via Contact Y (Screen 140) Mode: SUMMER (remote control) FROM THE SUPERVISION SYSTEM Consulting the supervision manual is advised, along with the list of variables. (Screen 18) Mode: SUMMER (remote control) (Screen 18)

35 Programme for Unit ISAISC P + CLOCK-CALENDAR - TIME BANDS If the microprocessor features the optional clock card, the STATUS Screen displays the date, current time and day of the week. The following actions can also be associated with a particular time: unit starting and stopping based on a timer programme; logging of alarm events. Current time and date are set, and time bands programmed, by means of the following forms: P + Access to Configuration Menu Enter Password: _00000 (screen 150) Clock - Calendar Hours-Minutes 12:00 DDMMYY Weekday (screen 110) MO CLOCK-CALENDAR SETUP By means of the Screen 110, you can set: time of day (hours, minutes); date (day, month, year); classification of the day of the week. SETTING TIME BANDS (SCREEN ) Using this device, you can set times (time bands) for automatic unit starting and stopping, achieving: up to 3 on-off cycles a day, each with a start and stop time; a weekly cycle with different daily cycles split into weekdays N (default setting from Monday to Friday), Saturdays P (default setting for Saturday, though it can be used for half-days etc.), and Sundays and holidays F (default setting for Sunday). Entering Yes on Screen 112 activates the time band device. Field D on the STATUS form will read HOUR. By using Screens 113, 114 and 115 you can programme time cycles - featuring a Unit On-Off Cycle (Max 3 On-Off Daily Cycles) Enable Y (Screen 112) Regular Day ON 08:15 OFF 12:30 ON 13:15 OFF 18:20 ON 20:00 OFF 22:30 (Screen 113) start time (ON) and a stop time (OFF) - for normal days (N), Saturdays and preholidays (P), and Sundays and holidays (H). With the unit idle, the display reads UNIT SWITCHED OFF RESTART AT with the time and day of the week programmed for the next start. If you enter 00:00 in both the ON and OFF fields, the cycle is disregarded. CLASSIFICATION OF DAYS OF THE WEEK (SCREEN 111) This is automatic, though it can be edited starting from Screen 111; the Screen is called up when the time band device is activated (Screen "ENABLE:" YES.) The current day is identified - for the purpose of time band programming - as: - N: normal or week day; - P: Saturday or half-day; - F: Sunday or holiday; SatdayPre-Holiday ON 08:30 OFF 14:00 ON 00:00 OFF 00:00 ON 00:00 OFF 00:00 (Screen 114) Sunday and holiday ON 00:00 OFF 00:00 ON 00:00 OFF 00:00 ON 00:00 OFF 00:00 (Screen 115) If you need to change this classification, press the 111a, or press the key. key to call up the Screen Programmed Cycle: N (Normal Day) To Change Press Key ENTER" (Screen 111)

36 Programme for Unit ISAISC WEEKDAY PROGRAMME OVERRIDE (SCREEN 111a) Unless otherwise programmed, days are classified in the microprocessor s memory as follows: weekdays (N) all days during the week from Monday to Friday; Saturdays or pre-holidays (P); Sundays and holidays (H) for Sunday Screen 111a (called up from the Screen 111 by pressing the ) allows the classification of the coming seven days, which will appear on the first line, today included to be changed. The stored classification (N or P or H) appears under each day and can be edited Programmed Cycle: N (Normal Day) To Change Press Key ENTER (Screen 111) PROGRAM. MO MO TU WE TH FR SA SU N N >H N >P >H H N=Normal P=PreH. H=Holyd. (Screen 111a) by pressing key or until you reach the desired classification. Pressing the key then confirms the classification entered and you are moved on to the next day. If classification differs from the standard setting (override), the > symbol automatically appears in front of it. Time bands adopted when overriding will be the same as the ones for days with that classification. The override condition is cancelled automatically once the day for which it was activated is over. To exit forms regarding the clock-calendar and time bands, press the key

37 Programme for Unit ISAISC P + ALARM ADDRESSING The following section ("CONSULTING ALARMS") describes possible alarm events that may be detected by the controller, specifying the action taken by the controller for each. By using the Screens in this section, it is possible to assign a type to each of the alarms listed, i.e.: type A: alarm is featured on the relay of digital output 8; type AR: alarm is featured on the relay of digital output 8 and causes the standby unit to take over; type B: alarm is featured on the relay of digital output 13; type BR: alarm is featured on the relay of digital output 13 and causes the standby unit to take over P + Access to Setting Enter Password: _00000 (Screen 150) Selection : A = relay 8 AR = relay 8 + Rotat. BBR = relay 13 (Screen 30) Water Flow AR Pumps Thermal B Pumps FC Thermal B (Screen 31) Cond.Press.Sensors A Evap.Press.Sensors B EXV valves B EEPROM B (Screen 35) Heat Recovery - Not POSSIBILE B - Locked B (Screen 36) Pumps Run Hours -- Compr. Run Hours -- Wrong Password -- Phases Sequence A (Screen 37) High Pressure Compr. Thermal Low Pressure Low Pressure Serious (Screen 32) AR AR B AR Inverter Compr. AR ETV OIL Inv. Comp. AR (Screen 38) High Water Thermal Low Water Temp. (Screen 33) B B Inverter Pump Water Pressure pcoe Exp. Board AR B A (Screen 39) Antifreeze AR Water IN Sensor B Water Out Sensor AR Ext. Air Sensor B (Screen 34)

38 Programme for Unit ISAISC CONSULTING ALARMS ACTIVE ALARMS Pressing the key silences the alarm buzzer and the description of the alarm is shown on the display. If the cause of the alarm has been eliminated, the last alarm message can be reset by holding down the key for a few seconds. If the cause of the alarm has not been eliminated, the audible buzzer warning is switched on again. ALARM LOG SEQUENCE To be able to reconstruct the sequence in which alarms occurred, the microprocessor keeps the last 100 events in its memory. All logged alarms can be consulted in series by pressing the Screen. key while you are on the STATUS 12: AL01 Loss of Water Flow Events where the hour-meter threshold is exceeded ("SERV.") are not logged and hence not displayed. In the sequence, the first event displayed is actually the last alarm encountered. In control circuits featuring a clock card (optional extra), the data and time the alarm occurred are associated with each alarm event logged. DESCRIPTION OF ALARM EVENTS All possible alarm messages that can be displayed on the user terminal are given below. General information on solving the problem is given on the last two lines of the display for alarms that are still active only (i.e. not for alarms that have been logged). INCORRECT PHASE SEQUENCE ALARM The SCROLL compressor must rotate the planned way or efficiency will be lost. The mains phase sequence may call for a direction of rotation other than the envisaged one in units with a three-phase power supply only. In this case, as soon as the unit is powered, the microprocessor immediately goes into an alarm state, impeding any other manoeuvre. In this case, disconnect the unit s power supply and swap two of the supply phases over. Allarm Mains Phase Error Volt.Out of Limit (Aut. Reset) Loss of Water Flow Check Hydraulic Circuit Flowswitch Failure Check Functionality Elctr.Connections reporting no water flow from flow-switch activated before starting up the pump. The control carried out a check of the state of the flow switch contact before the pumps start; if the contact remains closed, the control interprets it as an anomaly. Pre Circuit 1 Antifreeze pre-alert. Reporting the same for Circuit 2 Circ.1 Antifreeze Check Evap.Cleaning Refrigerant Charge Circuit 1 Antifreeze alarm. Reporting the same for Circuit 2 Circ.1 Antifreeze Check Evap.Cleaning Refrigerant Charge

39 Programme for Unit ISAISC Prealarm Circ. 1 Low Pressure Check Fridge Circuit Refrigerant Charge Circ. 1 Low Pressure Check Fridge Circuit Refrigerant Charge Circ. 1 High Press. Check Fridge Circuit AndOr Condenser Loss Of water Flow Check PumpHydraulic Circuit Pump 1 Not Running Check Safemotor Contactor Pump FC Not Running Check Safemotor Contactor Water in Temperature Above Max. Limit Water in Temperature Below Min. Limit Circuit 1 low-pressure pre-alert. This re-sets automatically after 60 seconds. If it is activated for 4 times in a row within the period of one hour, the alarm is activated (it is necessary to reset it from the keyboard). Reporting the same for Circuit 2 Circuit 1 low-pressure alarm. Reporting the same for Circuit 2 High pressure alarm for circuit 1 for the intervention of the high pressure switch with manual re-set. Reporting the same for Circuit 2 reporting no water flow from pump flow-switch Pump 1 thermal cut-out (or contactor fault) alarm. Reporting the same for Circuit 2. Free-Cooling Pump thermal cut-out (or contactor fault) alarm Inlet water high temperature alarm Inlet low water temperature alarm Prealarm Compr. 1 Thermal Check Electr. Input. Discharge Temp. Compr. 1 Thermal. Check Electr. Input. Discharge Temp Heat Recovery Non Possible (Out Of Limits) Attempt to Access With Wrong Password (Min. 3 Occurrences) Water in Sensor FailedDisconnected: Check SensorConnect.. Water Out Sensor FailedDisconnected: Check SensorConnect. Water Out Sensor 2 FailedDisconnected: Check SensorConnect. Compressor 1 thermal cut-out pre-alert. This re-sets automatically when the contact closes. If this happens 3 times in row within the period of 3 hours, the alarm is activated (it is necessary to reset it from the keyboard). Reporting the same for the other compressors. Compressor 1 thermal cut-out alarm. Reporting the same for the other compressors. Heat recovery not possible alarm. The alarm indicates if the recovery request has caused the compressor operation to be outside the operating limits permitted of if the high pressure threshold has been exceeded 4 times in a row within the period of one hour. Incorrect password entered alarm Inlet water temperature sensor fault alarm Outlet water temperature sensor fault alarm Outlet water temperature sensor fault alarm circuit

40 Programme for Unit ISAISC Ext. Air temp. sensor FailedDisconnected: Check SensorConnect. Circ. 1 Evap. P. Sensor FailedDisconnected: Check SensorConnect. Circ. 1 cond. T. Sensor FailedDisconnected: Check SensorConnect. Circ. 1 Cond. P. Sensor FailedDisconnected: Check SensorConnect. Service Al. Pump 1 Exceeded Run Hour Service Al. Pump FC Exceeded Run Hour Service Al. Compressor 1 Exceeded Run Hour Service Al. EEPROM failure: Replace Control Board Service Al. Lan Interrupted Units Not Connected: 1,2,3,4,5,6,7,8,9,10 Circ. 1 EXV Driver: Not Responding (tlan Failure) EXV1:Evap.T. Sensor FailedDisconnected: Check SensorConnect. EXV1: Evap. P. Sensor FailedDisconnected: Check SensorConnect. Circ. 1 EXV Driver MOP Failed Circ. 1 EXV Driver LOP Failed Circ. 1 EXV Driver: Low Suct. SuperHeat External air temperature sensor fault alarm Circuit 1 evaporating pressure sensor fault alarm. Reporting the same for Circuit 2. Circuit 1 condenser temperature sensor fault alarm. Reporting the same for Circuit 2. Circuit 1 and condensing pressure sensor fault alarm. Reporting the same for Circuit 2. Message indicating pump 1 has exceeded set hours of operation. Reporting the same for Pump 2. Message indicating FC pump has exceeded the set hours of operation. Message indicating compressor 1 has exceeded set hours of operation. Reporting the same for the other compressors. EEPROM fault warning Break in LAN warning tlan communication alarm between the EXV 1 driver and the UpCO1m control. Check the connection. Reporting the same for Circuit 2. EVX 1 evaporating temperature sensor fault alarm. Reporting the same for Circuit 2. EVX 1 evaporating pressure sensor fault alarm. Reporting the same for Circuit 2. EVX 1: This alarm is activated if there is an excess in evaporation pressure, or when the MOP is higher than the threshold which has been set, for a period of time longer than the MOP s Delay. Reporting the same for Circuit 2. EVX 1: This alarm is activated if there is a lack of evaporation pressure, or when the LOP is lower than the threshold which has been set, for a period of time longer than the LOP s Delay. Reporting the same for Circuit 2. EVX 1: The alarm is activated if there is low superheating, for a period longer than the Low SH s Delay. Reporting the same for Circuit

41 Programme for Unit ISAISC Circ. 1 EXV Driver: High Suction Temp. EVX 1: The alarm is activated if the suction temperature taken by the EVD400 sensor, is higher than the threshold set for the High SH. Reporting the same for Circuit 2. Circ. 1 EXV Driver: EEPROM Error EVX 1: This alarm is activated following an error in the memory of the EEPROM. Reporting the same for Circuit 2. Possibile break down of compressor 1 Thermal-magnetic check Fans Thermal Check Electrical Bridging Possible loss refrigerant circ. 1 Verify charge pcoe: Expansion board Not Connected Prealarm Inverter Fault Compressor 1 Inverter Fault Compressor 1 activated if the evaporating pressure at compressor start-up (monitored for 30 seconds), does not fall below the set limit. The same alarm occurs for the other compressors. This alarm is activated by the digital inlet connected to the thermal condensing fans. This alarm is activated in case of possible leakage of refrigerant gas in circuit 1. Reporting the same for Circuit 2. activated when there is an interruption via tlan between the UpCO board and the UpCOe board. Compressor 1 Inverter Fault pre-alert. This re-sets automatically after 60 seconds. If it is activated for 4 times in a row within the period of one hour, the alarm is activated (it is necessary to reset it from the keyboard). Compressor 1 Inverter Fault alarm. Isolating Valve Not (Fully) Opened:Check ValveLimit Switch Pre-alarm Low Oil Level Compr.1 Check LevelSensor Low Oil Level Compr.1 Check LevelSensor Inverter Circulation pump Water Pressure Input FailedDisconnected: Check SensorConnect Water Pressure Out FailedDisconnected: Check SensorConnect activated when, during opening, the isolating valve has not reached the contact of the limit switch within a set time. Low oil level pre-alarm for compressor 1. It automatically resets after 60 seconds. If it occurs 3 times consecutively in an hour then the alarm is activated (it is necessary to rest the keyboard). Check the oil level or check that the infra-red sensor is working. The same alarm occurs for the other compressors. Low oil level alarm for compressor 1. The same alarm occurs for the other compressors. for problems regarding the water circulation inverter driven pumps. Inlet water pressure sensor fault alarm Outlet water pressure sensor fault alarm

42 Programme for Unit ISAISC DEFAULT VALUES CONFIGURATION NUMERICAL PARAMETERS Screen PARAMETERS DEFAULT Screen. SETTINGS PARAMETERS U.M. PRE-SET Modes Set-points 60 Heat recovery NO 121 Standard summer setpoint C 7 62 Inverter compressor enabling Yes 121 Optional summer setpoint C Inverter water pump enabling NO 121 Max.Hysteresi C Low speed pump enabling NO 122 Winter setpoint C EXV valve NO 122 Max.Hysteresi C Low Noise enabling NO 70 Summer setpoint minimum value C 6 79 FC stand-by enabling NO 70 Summer setpoint maximum value C Antifrezze pump FC enabling NO Compensation parameters 82 Isolating valve enabling NO 123 P1 summer: setpoint C 7 94 Setpoint remote enabling NO 123 P1 summer: external temp. C Setpoint remote by Lan enabling NO 123 P2 summer: setpoint C 7 98 Emergency recovery enabling NO 123 P2 summer: external temp. C ONOFF Daily cycles NO 124 P1 winter: setpoint C a Set Back mode enabling NO 124 P1 winter: external temp. C Cyclical Start of pump enabling NO 124 P2 winter: setpoint C 45 addressing 124 P2 winter: external temp. C Water flow AR thresholds 31 Pump thermal cutout B 125 Min. summer water inlet temp. C 5 31 Pump Fc thermal cutout B 125 Max. summer water inlet temp. C High pressure AR 126 Min. winter water inlet temp. C Compressor thermal cutout AR 126 Max. winter water inlet temp. C Low pressure B Set back mode parameters 32 Low pressure serious AR 127 Summer setpoint C High water temperature B 127a Winter setpoint C Low water temperature B 128 Pump ON interval during setback mode min Antifreeze AR Fan control parameters 34 In water temp. sensor B 72 Minimum fan speed % Out water temp. sensor AR 72 Maximum fan speed % External temp. sensor B 72 Low noise Minimum fan speed % Condensing control sensor A 72 Low noise Maximum fan speed % Evaporation control sensor B 73 Condensing fan ON temperature C EXV valve B 73 Condensing fan OFF temperature C EEPROM B 73 Condensing Ramp start temperature C Heat recovery not possible B 73 Condensing Ramp end temperature C Heat recovery impeded B 74 Low Noise 2 ramp start temperature C Hours of operation -pumps Low Noise 2 ramp end temperature Hours of operation -compressors Evaporation fan ON temperature C Incorrect password Evaporation fan OFF temperature C Incorrect phase sequence A 75 Evaporation Ramp start temperature C Inverter Compressor AR 75 Evaporation Ramp end temperature C ETV OIL inverter compressor AR 71 Mains Frequency Hz Inverter pump AR Free-Cooling parameters 39 Water pressure sensor B 72 Max Speed Setting total FC Mode % pcoe Exp.Board A 72 Max Speed Setting partial FC Mode % 66 Remote control, supervision and Lan management 73 DT Water IN-Ambient SetPoint C IO command via contact NO 74 On FC Total DT Water IN-OUT Setpoint C IO command via serial NO 78 DeltaT. Water IN-OUT to total FC C SW command via contact NO Antifreeze parameters 141 Serial adress Glycol % Protocol Standard 81 Setpoint AF C Serial speed ( ) 1200 Pression and Temperature Sensor 141 Automatic standby rotation NO 83 High pressure ramp start kpa Single unit only limit NO 83 High pressure ramp end kpa Off unit after ON Std-by enabling NO 84 Low pressure ramp start kpa Regulation Step Calling Stand. 84 Low pressure ramp end kpa Usage of temp. value mode Local 85 High water pressure ramp start kpa High water pressure ramp end kpa Offset Adj. sensor C

43 Programme for Unit ISAISC CONFIGURATION NUMERICAL PARAMETERS Masch. PARAMETERS DEFAULT Screen. SETTINGS PARAMETERS U.M. PRE-SET Remote Setpoint 95 Zero Adj. mv Signal 0-10V C Integer 49 variable n 00.0 Heat Recovery 98 Delta T. T.Cond-T.Water C Emergency recovery C 8.0 Emergency Recovery 99 Active after to Power-ON if TWout-SetP C 8.0 Buzzer 101 Active time ON Min 5 Password 102 Password Settings Password Service * * * * * Delay Time 150 Power On Delay sec Control start delay sec Temp. alarms delay min Anti-hunting time constant sec Flow-switch: signal acquisition sec Flow-switch: alarm warning sec Pump rotation interval h Minimum interval between two starts sec Minimum on interval sec Minimum off interval sec Interval between two steps sec LP pressure-switch tripping delay sec LP pressure-switch normal work delay sec Free-Cooling Pump Start Delay sec Standby rotation interval h 168 Circulation Pump Speed Control Low Load 130 Max water flow regulation % Min water flow regulation %

44 EXV DEFAULT VALUES Programme for Unit ISAISC PARAMETERS Default Value Unit Size Description U.M Modes EXV type Carel E2V..E6V Refrigerant type R410 Opening step n 1300 Overclosed step step 20 Opening step mode Auto Circ.Evap Ratio Chiller Mode % Heating Mode % Defrost Mode % SSH Integral Time Chiller Mode sec Heating Mode sec Defrost Mode sec SSH Set Auto Mode C Chiller Mode C Heating Mode C Defrost Mode C Derivative time sec SSH dead band C SSH KP Auto Mode step C Chiller Mode step C Heating Mode step C Defrost Mode step C Low SSH Set Chiller Mode C Heating Mode C Defrost Mode C Low SSH Integral Time sec LOP Set Chiller Mode C Heating Mode C Defrost Mode C LOP Integral Time sec MOP Set Chiller Mode C Heating Mode C Defrost Mode C MOP star-up delay sec MOP Integral Time sec Delay Low SSH s 0120 High Suct. Temp. s 0000 LOP s 0000 MOP s 0000 Press. Probe Failure at compress. start s 000 Press. Probe Failure at normal working s

45 APPENDIX Screens Flow Charts P P IO P IO W.Press.In kpa 000 Initiating... W.Press.Out kpa 000 Please Wait Total Head kpa 000 Pump % : External Air C 17 Holiday Program Condens.Temp.1 C 40 Restart in: 00days Condens.Temp.2 C 40 (with progr.cycle) Fans: % :00 LU Circuit 1 Unit On by bar C Std-by Freecooling Condens Evapor :00 MO Circuit 2 Water OUT T. C10.0 bar C To Start Unit Condens Press On Key Evapor :00 MO Cooling MAN REMOTO LAN01 05 Exv Circuit 1 SuperHeat C 00.0 Opening steps n :00 MO Exv Circuit 2 Water IN T. C 12.0 SuperHeat C 00.0 Water OUT T. C 07.0 Opening steps n 0000 Water Tank T. C Compressor 1 Off Compressor 2 Off Compressor 1 On 40.0Hz Compressor 2 On Free-cooling Off (Partial) Heat Recovery Water Temp 00.0 ßC OFF Mode: SUMMER To Change Press Enter Key PASSWORD "TARATURE""SETTINGS" Compressor 1 Tot.Run Hours Limit H Reset Compressor 2 Tot.Run Hours Limit H Reset Pump 1 Tot.Run Hours Limit H Reset Pump 2 Tot.Run Hours Limit H Reset Free-Cooling Pump Tot.Run Hours Limit H Reset Starting Number C.1 res. - C res Minimun Run Time Err Compressor Compressor Manual Defrost Circ.1 Defrost - No 27 12: AL01 No Recorded 10: Power Back After Failure HISTORICAL SEQUENCE READING OF THE MEMORIZED ALARMS PASSWORD "TARATURE""SETTINGS" s Selection: A= relay 8 AR=relay 8 + Rotat. BBR=relay Water Flow Pump Therm.Switch FC Pump Th-Switch 31 High Pressure Compr.Thermal Low Pressure Low Press.Serious 32 High Water Temp. Low Water Temp. 33 AR B B AR AR B AR B B Antifreeze AR Water IN Sensor B Water OUT Sensor AR Ext.Air Sensor. B 34 Cond.T.Sensors. A Evap.Press.Sensors B EXV valves B EEPROM B 35 Heat Recovery: - Not Possible B - Locked B 36 Pumps Run Hours -- Compr. Run Hours Wrong Password - -- Phases Sequence A 37 ID1 Remote On-OFF C ID2 ID3 ID4 HP1-TP1 (DGT1) C 40 (SEQUENCE READING OF THE BOARD S DIGITAL INPUT) B1 Press.Cond B2 Press.Cond B3 Press.Evap B4 Press.Evap (SEQUENCE READING OF THE BOARD S ANALOG INPUT) C1 CC1 C2 CC2 C3 OffV. Cond C4 CPFC 46 OFF OFF OFF OFF (SEQUENCE READING OF THE BOARD S DIGITAL OUTPUT) C13 All.tipo B OFF Y2 --- Y3 --- Y (SEQUENCE READING OF THE BOARD S ANALOG OUTPUT) PASSWORD "SERVIZIO""SERVICE" _ Hardware Config. Delay Settings Manual Control EVX Parameters Inverter Compr. AR ETV OIL Inv.Comp. AR Circul. Pump 1 Off Circul. Pump 2 Off Regulated Pump %% 100 Head Press kpa Inverter Pump AR Water Pressure B pcoe Exp.Board A 39

46 HARDWARE CONFIGURATIONS DELAY SETTINGS MANUAL CONTROL Unit Type: ERISAC 0521 Heat Recover NO 60 Refrig.Circ.Option Gas Type: R410a EXV valves: No FC Parameters Total FC Mode DT Water In-Out 0.0 C 94 Set Point Remote Offset (positive) Y By 0-10V Signal With pcoe Exp.Boa Power On Delay s 000 Start Trans. s 000 Temp.Al.Delay min Manual Override Unit Start-Up N Compressor 1 N %000 Compressor 2 N Fans EC With Electronical Commutated Motor Cool.SetPoint Limits Min Value C 06.0 Max Value C FC on Stand-by Unit (Hydr.Connected) Enabled: N Set Point Remote Offset (positive) Zero Adj. mv V Signal = C Anti-Hunting Time Constant of Water Temp.Control s 000 Manual Override Pump 1 Pump 2 SwitchOver P N N N 62 Compressor variable Speed: No 71 Mains Frequency Hz 50 Antifreeze Function FC Pump Activation On Stand-by N Set Point Remote Offset (positive) Integer =00.0 FS Start Delay s 000 FS Run Delay s 000 Pump Changeover h Manual Override Free-Cooling Pump 172 N Inverter PID Sett. Prop Band C 00.0 Int.Time sec 000 Der.Time sec Fan Speed Setting Low Noise Mode N Min.Speed % 12 Max.Speed % Antifreeze Glycol %00 Setpoint AF C Set Point Remote From Unit 1 to All Unit by LAN N Compr.Timing Cycle min. s 000 Run s 000 Off s 000 Between 2 diff.s Manual Override Fan Speed % 000 Out Ramp % 000 Ramp %:Y1 000 Y Inverter PID Sett. Winter Mode Prop Band C 00.0 Int.Time sec Fan Speed Reg. (S) On: 00 C Off: 00 C Ramp begin. 00 C Ramp ending 00 C 82 Control of Motorised Isolating Valve: No CtrlMode: LimitSwitch Delay sec Heat Recovery T TCond-Twater C 00.0 Compr.Timing LP-Start Delay s 000 LP-Run Delay s Ciculator Pumps: 1 Inverter: N CTRL Head Press: AUTO Head Press. kpa: Fan Speed Reg. (S) LowNoise (High Ramp) Ramp2 begin. 00 C Ramp2 ending 00 C 74 High Press.Sensor Range Begin. kpa 0000 Range End. kpa Emergency Recovery Enable: No Activ.At Power ON if Twout>SetP+ C Free-Cooling Pump: Start Delay: s 000 Set Head Pres. 150kPa Read Value: 0000Kpa Prop.Band: 100 Int.T. 000s Der.T.00s Fan Speed Reg. (W) On: 00 C Off: 00 C Ramp begin. 00 C Ramp ending 00 C Low Press.Sensor Range Begin. kpa 000 Range End. kpa Refrigerant charge Check Disattiva 67 Circulation Pump Speed Contr.Low Load N FC Parameters Max Speed Setting Total FC Mode % 000 Partial FC Mode % Water Press.Sensor Range Begin. kpa 000 Range End. kpa Buzzer Conf. Activat.Time min 00 (0=never;99=ever) Usage of Pres.Values Mode: Local FC Parameters DT Water IN-Ambient SetPoint C 00.0 Offset Adj. ( * ) Read Value C 00.0 Adjustment C Set-Up Of Passwords For Accessing To: Settings Service Program Set up N Al.Page Clear-up N Hardware Set up N ( * ) Water IN Temp.Sensor Water OUT T. Sensor Water OUT2 T. Sensor Water Tank T. Sensor Ambient Temp.Sensor Disch.C1 T. Sensor Water Pressure Inlet Water Pressure Outlet 103

47 EXV VALVE PARAMETERS EXV Work. Param. Circuit 1 Values Circuit 2 Values Settings 210 EXV Driver Set Valve: DANFOSS ETS25-12 Refriger.Gas: R410a 230 SSH Set (Auto: 00.0) Chiller Mode C 00.0 Heating Mode C 00.0 SETTINGS Chiller Mode MOP Set C 00.0 LOP Set C MOP Startup dly s 000 (Auto: 00.0) CIRCUIT 12 VALUES Integr.Time s 00.0 Defrost Mode C 00.0 Capacity req. % 000 Opening Steps n 0000 Evap. Press. bar 00.0 Evap. Temp. C Prop.Gain (Auto 00.0) LOP PROTECTION Chiller Mode: 000 Integr. Time s 00.0 Heating Mode: 000 (Auto: 00.0) Defrost Mode: Suct.Temp. C 00.0 SuperHeat C 00.0 SSH Set C 00.0 Integr. Time (A.s 000) Defrost Mode FW ver.hw: 000 SW: 000 Chiller Mode s 000 MOP Set C Heating Mode s 000 LOP Set C 00.0 Defrost Mode s PROBES OFFSET ADJ. C.1 Evap.Pressure Read Value bar 00.0 Overclos. Steps 0000 Heating Mode Adjustement bar 0.0 MOP Set C SSH Dead Zone C 0.0 LOP Set C 00.0 (Auto: 0.0) Dynamic kp factor NO PROBES OFFSET ADJ. C.1 Suction Temp. Read Value bar 00.0 Derivat. Time s 00.0 Evap. Press. Sensor Adjustement bar 0.0 (Auto: 00.0) Range Begin. bar 00.0 Max Suct.T. C 00.0 Range End. bar (Auto: 00.0) C.1 MANUAL CONTROL Opening Steps 0000 Mode AUTO Circ.EXV Ratio ALARM DELAY (s) Chiller Mode Low SSH HP mode 000 High Suct. T Defrost Mode LOP 0000 MOP SSH LowL. (Aut. 00.0) ALARM DELAY (s) Chiller Mode C 00.0 Press. Probe Failure: HP mode C 00.0 AT Compr. Start. 000 Defrost Mode C 00.0 At Normal Working SSH Low Limit Integr. time s 00.0 (Auto: 00.0) P PASSWORD "TARATURE""SETTINGS" Clock Calendar HoursMinutes 00:00 DDMMYY Weekday MO 110 NO Time band activation Unit On-Off Cycle (Max 3 On-Off Daily Cycles) Enable: N Regular Day ON 00:00 OFF 00:00 ON 00:00 OFF 00:00 ON 00:00 OFF 00: SatdayPre-Holiday ON 00:00 OFF 00:00 ON 00:00 OFF 00:00 ON 00:00 OFF 00: Sunday and Holiday ON 00:00 OFF 00:00 ON 00:00 OFF 00:00 ON 00:00 OFF 00: Holiday Programme Till: To Change Press Key ENTER YES Time band activation Programmemed Cycle:: Normal Day To Change Press Key ENTER PROGRAMME. Mo MO TU WE TH FR SA SU N N N N N P F 111a Only in programmeming mode 120 P PASSWORD "TARATURE""SETTINGS" Water OUT Regul. Active SetP. C 07.0 Mode: Ext.Temp.Compens. Wat.OUT Summer Reg. Std SetP. C 00.0 Opt SetP. C 00.0 Max.Hysteresi C Wat.OUT Winter Reg. Set Point C 00.0 Max.Hysteresi C 00.0 SetPoint Compens.: Sum.SetP. Ext.T. P C P C a 00.0 C a 00.0 C 123 Winter Compens. Win.SetP. Ext.T. P C P C a 00.0 C a 00.0 C Thresholds Water INLET Temp. Min.Temp. C 00.0 Max.Temp. C Circulation Pump Max W.Flow R: 100.0% Min. W.Flow R: 090.0% 130 Thresholds Winter Water IN T. Min.Temp. C 00.0 Max.Temp. C 00.0 Setback Mode: N Set Point C Delivery Setback Mode: N Summer SetP. C 00.0 Winter SetP. C 00.0 Delivery 127a 128 Set back Mode Cyclical Start of Pump (s 120) N Interval min. 00 SetP. Std C 00.0 OffSet rem. C 00.0 Active SetP. C P PASSWORD "TARATURE""SETTINGS" IO via Contact N IO via Serial N SW via Contact N 140 Serial Addr.: 001 Serial speed: 1200 Protocol: Standard LAN:Unit number Autom. Switch-Over of Std-by Unit: N Cycle Time h 000 N Stand-by units Run. Unit in Rotat. Switching OFF After Switch. ON Stand-by Enabled: N 143 Reg.Step Calling Mode: Standalone Usage of Temp.Values Mode: Local Programme Version ISA ST021@N2015T2A00 LAN: Unit n Vers. Date Bios: Boot:

48 PART II: LOCAL NETWORK Programme for Unit ISAISC GENERAL INFORMATION AND DEFINITIONS 1. Several air conditioners installed in the same room or several liquid chillers connected in parallel in the same system can be managed by connecting them to a local network. 2. The number of connected units depends on the programme managing the network, stored in the Flash Eprom memory. 3. Units in a network can be connected at a max. 500 metres. 4. All the units connected to the network must have the same programme version on the Flash Memory on the board. 5. A terminal can be configured as private or shared. a private terminal shows the status of the single unit connected to it by a telephone cable; a shared terminal shows the status of all the units connected to the network. 6. Each board can talk to 3 terminals at the most; there are usually no more than two in normal operating conditions: one fitted in the unit and one possibly in a remote location. Fig. 1. signals always have priority over the terminal, even if the parameters of another unit are being viewed when the alarm is triggered. Fig To communicate on the local network, the units must be configured so that each of them can convey the information necessary to operate properly. To achieve this, the separate units must first be numbered progressively (1,2,3,...10) and then the various terminals and LAN boards correctly addressed to them. The electrical connections must also be made, step by step, as described below

49 Programme for Unit ISAISC MOST COMMON plan NETWORK CONFIGURATIONS 1. Up to 10 units connected to the network with a single terminal. Fig. 3. 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. 2. Up to 10 units each with its own terminal. 3. Up to 10 units with a single shared remote terminal. Fig. 4. Fig. 5. plan CONNECTION BETWEEN UpCO BOARDS In figure 6, a simple parallel connection is shown for more than one UpCO boards of the plan network, using a shielded cable with two twisted pairs and an internal screen. The cable is connected to all of the boards through the J11 terminal respecting the indicated polarity. Fig

50 Programme for Unit ISAISC WARNING: Network polarity must be respected: the RXTX+ of one board must be connected to the RXTX+ of the other boards; the same applies to RXTX- and the GND. Board Terminal GND Rx+ Tx+ Rx- Tx- Cable Connection First couple (both wires) Second couple Second couple The screen should be connected to the earth 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. Braid 2 Coppia 1 Coppia Fig. 7 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 depending on the maximum distance of the board and remote terminal connections; it may be necessary to use a T shunt TCONN6J (as shown in Fig. 8) to connect the remote terminal to the main board. TERMINA Fig

51 Programme for Unit ISAISC Cable AWG24 3x2 Terminal Cable operation Connections 0 Earth (screen) shielded VRL ( 30 Vcc) Gnd RxTx- RxTx+ Gnd + VRL ( 30 Vcc) 1 twin A 2 twin A 3 twin A 3 twin B 2 twin B 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 which are separated by a dashed line. If power is needed to be supplied to all of the connectors, both of the jumpers must be between 1 and 2. The 0 terminal is 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. MAXIMUM DISTANCES BETWEEN THE TERMINAL AND THE BOARD 1. For local terminals the connection with the base board is already made with a 3 pair cable with a 6 way telephone connector. The length of this cable should not be longer than 3 metres. 2. 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 metres. For connections of up to 6 metres the cable can be supplied, on request, by UNIFLAIR SpA. Cable length m 1,5 m 3,0 m 6,0 Uniflair code Meco 110X1A Meco 130X1A Meco 140X1A 3. For longer distances, up to a maximum of 200 metres, a screened cable must be used (a twisted pair cable with a screen AWG24, resistance < 80ohmM). The cable can be a three or two twisted pair depending on if it has to transfer power to the terminals. CABLE FOR LAN AND SUPERVISION CONNECTION For connection to both LAN and supervision networks, it is advisable to use a cable which has the following specifications: Multi-coupled cables with internal flexible conductors made from tin plated copper (AWG 227), insulated with polypropylene, singularly coupled, screened with aluminiumpolyester tape + continuity wire in tin plated copper (AWG 247) connected on a common axis to reduce the diameter and protected by an external sheath in PVC. Technical features Article Y x2xAWG227 Ø external om. Conduct. resist. max. Impedence Capacity (pfm) Operating voltage Operating temp. (mm) (ohmkm) (ohm) C1 C2 (V) ( C) 4,50 54,

52 Programme for Unit ISAISC EXAMPLE OF A CONNECTION TO THE REMOTE TERMINAL FROM THE BOARD In this configuration it is necessary to: 1. use the two TCONN6J 'T' joints: one installed on the unit and one near the remote terminal; 2. use a three pair screened cable for two, so that the remote terminal is also supplied by the board of unit 1 to which it is connected by the TCONN6J; 3. place the ferrite near the terminal in order to reduce the possibility of electromagnetic disturbances. Fig.9 Fig

53 Programme for Unit ISAISC CONFIGURATION OF THE TERMINAL AND THE UpCO 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 as well as the connection with the remote or shared terminal and 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 enter in configuration mode press the UP, ENTER and DOWN keys at the same time for at least 5 seconds (these keys are present on all versions); the mask shown in Fig. 11 will be displayed with a flashing curser in the left hand top corner: To modify the address of the terminal (display address settings) press the ENTER key once and the curser will move to the address field (nn). By using the UP and DOWN keys, select the desired value and press ENTER to confirm. If the selected value is different from that previously memorized in the mask in fig.12 will appear and the new value will be memorized in the permanent memory of the display. If 0 is entered as a value in the nn field, the terminal will communicate with the UpCO board using the point-point protocol (not plan) and the field XX will disappear since it has no meaning. Display address settings..: nn Display address changed IO Board address:xx Fig. 11 Fig. 12 UpCO: assigning the list of private and shared terminals If it is necessary at this point to modify the list of terminals associate to each single UpCO board, the following procedure should be carried out: enter in the configuration mode using the UP ENTER and DOWN keys as described in the previous paragraph; press the ENTER key until the curser is positioned in the XX field (IO board address) Fig. 11; Use the UP and DOWN keys to choose the address of the desired UpCO board. The values which can be selected will be only those of the UpCO boards which are effectively on line. If the plan network is not working correctly, or if there are no UpCO boards connected, it will not be possible to modify the field and only will be shown; Pressing the key again will display the sequence of masks as shown in Fig. 13; The ENTER key moves the cursor from one field to another and the UP and DOWN keys change the value of the chosen field. The Pxx field: this shows the address of the selected board; in the example in fig. 13, P01 has been selected. To exit from the configuration procedure and memorize the data, select the OK? field and set it to YES and then press ENTER to confirm. The fields in the Adr column represent the addresses of the terminals associated with the UpCO board, address 11 for the local terminal and 32 for the shared terminal, while the column PrivShared indicates the type of terminal. Warning: the terminals of the MP20 line cannot be configured as Sp (shared printer) as they do not have a printer output. If the terminal remains inactive for more than 30 seconds (no key has been pressed) it exits automatically from the configuration procedure without memorizing any eventual changes. Assigning the list of private and shared terminals Terminal Config Press ENTER to continue Fig. 13 P01: Adr PrivShared Trm1 11 Ph Trm2 32 Sh Trm3 None -- OK?NO

54 Programme for Unit ISAISC LAN ADDRESS OF THE UpCO BOARD The address of the board is selected as illustrated below: 1. Disconnect the power supply to the UPCO board; 2. Disconnect the J11 terminal clamps (RxTx-, RxTx+, GND); 3. Connect a user terminal with the address = 0 to the board of unit 1; (see paragraph Configuration of the Terminal); 4. Reconnect the power supply and press the ALARM and UP keys at the same time until the following mask appears: ##################### Self Testing Please Wait ##################### and then: Fig. 14 plan address:1 up: increase down: decrease Enter: save & exit Fig Press the ENTER key to accept the value of the address of the proposed board on the display or the UP and DOWN keys to modify it: set the "plan address: 1" on unit n. 1. (NOTE: if a key is not pressed within 15 seconds the mask will disappear from the display and it will be necessary to repeat the procedure described in point 1.). 6. Press ENTER to confirm; 7. Disconnect the power supply; 8. Repeat the procedure set out in points 1 to 6 on unit n. 2 and for the other units in the network; plan address:2 up: increase down: decrease Enter: save & exit Fig Reposition the J11 terminal clamps (RxTx-, RxTx+, GND) on the board. Table for UpCO board addresses Unit Address

55 Programme for Unit ISAISC Table for terminal and UpCO board addresses Terminal Address UpCO Board Address Terminal Address UpCO Board Address Terminal Address UpCO Board Address 32 All addresses In Fig. 17 a network of 4 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 succession for the other units. + P keys at the same time and in Fig

56 LAN PARAMETER CONFIGURATION Programme for Unit ISAISC After having carried out the configuration of the remote and shared user terminals, the operating parameters of the LAN network must be set. This must only be carried out on the unit with the address LAN1, because the information will automatically be passed on to the other units which are connected. The required settings are inside the Remote Control Parameters Menu accessed by pressing the keys some of the information for the required settings is described below. P + ; Set the number of units connected to the Lan network;; LAN:Unit number: no Lan (screen 141) Activate the automatic exchange of the unit in stand-by; Set the cycle time to carry out the rotation of the units; if the hour is set at 000, a simple test will be carried out putting the units in rotation with an interval of 2 minutes; Set the number of units in stand-by (max 2): allows the unit operating in rotation to be switched-off, only when the reserve unit has activated its own water circulation pump. Activate management of the water temperature regulator. The mask 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 the temperature values read by the sensor present on the air conditioner; Method: Average Value: control of the unit is 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 reading of the sensor itself is more than the AVERAGELOC.DIFF. value, the control will automatically move from AVERAGE to LOCAL. NOTE: This setting is not passed on to the other units, so it needs to be set individually on each unit. Autom. Switch-Over Of Std-by Unit Y Cycle Time h 024 N- Stand-by units 1 (screen 142) Run. Unit in Rotat. Switching OFF After Switch. ON Stand-by Enabled: N (screen 143) Reg.Step Calling Mode: Standalone (screen 144) Usage of T+H values Mode: Local (screen 145) O Usage of T+H values Mode: Mean Aut.Changeover MeanLoc.Diff. C 00 (screen 145)

57 Programme for Unit ISAISC VISUALIZATION OF THE NETWORK FROM THE TERMINAL From any terminal in the network, the mask << NetSTAT >> will appear when the UP + ENTER + DOWN keys are pressed at the same time for at least 10 seconds ( see Fig. 18). The NetSTAT mask indicates all of the UpCO boards with a LAN address and all of the terminals present in the network, including the remote shared terminal, and its relative addresses. Board UpCO Private terminal NetStat: T: Enter To Exit Fig. 18 Shared terminal = board = terminal 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

58 Programme for Unit ISAISC

59 Programme for Unit ISAISC

60 UNIFLAIR S.p.A. Legal and Aministrative Headquarters: Viale della Tecnica 2, Conselve (PD) Italy Tel Fax uniflair.com P.IVA C.C.I.A.A. di PD R.E.A del R.I.N M. PD Share capital