pco2 - Интернет магазин климатической техники и ... manual...

www.tecnairlb.it [email protected]

TECNAIR LB s.r.l. Via Caduti della Liberazione 53

21040 UBOLDO (VA) Tel. +39029699111 / Fax +390296781570

Manuale cod. 75802306A.0107

pCO2 MICROPROCESSOR REGULATION

TECHNICAL MANUAL

THIS MANUAL REFERS TO THE FOLLOWING UNITS: AIR CONDITIONERS FOR SURGICAL AND CLEANS ROOMS: H and W SERIES

AIR CONDITIONERS FOR TELECOMUNICATIONS: K and R SERIES

Manuale cod. 75802206A.0107 Pagina 2 di 95

INDEX: 1. pCO2 MICROPROCESSOR 4

1.1 FEATURES COMMON TO ALL THE VERSIONS 4 1.2 FEATURES OF pCO² SMALL (H/R-K) 4 1.4 FEAUTURES OF pCO² LARGE (H series only) 4 1.5 HARDWARE STRUCTURE 4 1.6 MAIN FUNCTIONS 6 1.7 CONTROLLED COMPONENTS 6 1.8 OPTIONS 6 1.9 PROGRAMMING 6

2. pCO2 MOTHER BOARD 7 2.1 pCO2 MOTHER BOARD LAYOUT 7 2.3 pCO2 CARD SUBSTITUTION 10

3. USER TERMINAL 14 3.1 USER TERMINAL MODEL 14 3.2 USER TERMINAL KEYBOARD 15 3.3 TYPICAL USE OF THE BUTTONS IN STANDARD APPLICATIONS 16 3.4 INSTALLING THE USER TERMINAL 17

4. pLAN NETWORK ONLY FOR K AND R SERIES 18 4.1 pLAN LOCAL NETWORK COMPONENTS 19 4.2 pLAN ELECTRICAL CONNECTIONS 19 4.3 pLAN LOCAL NETWORK CONNECTION EXAMPLES 23 4.4 ADDRESSING OF THE UNITS IN THE Plan local network 26 4.5 CONFIGURATION EXAMPLE OF pLAN LOCAL NETWORK 28 4.6 FUNCTIONMENT MESSAGES OF THE USER TERMINAL 30 4.7 MONITORING OF THE pLAN LOCAL NETWORK STATUS 30 4.8 DIAGNOSIS OF THE ANOMALYS OF THE pLAN LOCAL NETWORK 31 4.9 TECHNICAL CARACTERISTICS OF THE pLAN NETWORK 31

5 PROGRAMMING KEY 32 6. SERIAL COMMUNICATION 33

6.1 SERIAL PRINTER CARD FOR GRAPHIC TERMINAL 33 6.2 SERIAL PRINTER FOR LCD 4x20 or 6 LED DISPLAY 33 6.3 RS485 SERIAL BOARD FOR SUPERVISOR AND TELEMAINTENANCE 34 6.5 RS232 SERIAL CONNECTION CARD FOR MODEM MANAGEMENT 35 6.6 SERIAL CARD FOR LONWORKS® NETWORK 36

7. HUMIDIFER CONTROL 39 8. pCO2 TROUBLESHOOTING 41

8.1 THE UNIT DOESN�T SWITCH ON 41 8.2 ON SWITCHING ON ONE OF THESE SITUATIONS ACCURS 41 8.3 ERRONEUS READING OF THE INPUTS SIGNAL 41 8.4 EEPROM FAILURE ALARM 41 8.5 UNUSUAL ALARM SIGNALFROM THE DIGITAL INPUTS 41 8.6 THE PCO CONTINUES TO REPEATEDLY GO INTO WATCH-DOG MODE 42 8.7 THE SERIAL CONNECTION TO THE LOCAL SUPERVISOR DOESN�T WORK 42 8.8 THE CONNECTION TO THE REMOTE SUPERVISOR DOSEN�T WORK 42 8.9 THE USER TERMINAL IS LOCKED-OUT 42

9 GENERAL REGULATION CONCEPTS: PARAMETERS DEFINITION 43 9.1 UNIT WITH ONE COMPRESSOR 44


9.2 UNIT WITH TWO COMPRESSORS 44 9.3 UNIT WITH CHILLED WATER VALVE 45 9.4 UNIT WITH CON FREE COOLING 45 9.5 AIR CONDITIONER WITH COMPRESSOR REGULATED BY THE INVERTER 46 9.6 UNIT WITH ONE HEATER 47 9.7 UNIT WITH TWO HEATERS 47 9.8 UNIT WITH HOT WATER VALVE 48 9.9 DEUMIDIFICATION BLOCK (series K units only) 48 9.10 HUMIDIFIER CONTROL 49

10. STRUCTURE OF THE MASKS OF THE REGULATION PROGRAM 51 10.1 MEANING AND USE OF THE KEYS OF THE USER TERMINAL 52

11 UNIT CONFIGURATION: MEANING AND USE OF THE MASKS (manufacturer only) 55 11.1 MANUFACTURER LOOP: MASKS FOR THE COMPONENTS CONFIGURATION (H & W) 55

12. PROGRAMMING AND CONTROL OF THE UNIT’S FUNCTIONMENT: (H & W series) 61 12.1 LOOP MENU: READING OF VALUES SIGNALLED BY THE FEELERS (H & W series) 61 12.2 MANTAINANCE LOOP: COMPONENTS WORKING HOURS (H & W SERIES). 62 12.3 PRINTER LOOP: SETTING OF THE OPERATION (H & W SERIES) 64 12.4 I/O LOOP: INPUT/OUTPUT: COMPONENT STATUS (H & W SERIES) 64 12.5 LOOP CLOCK: SETTING OF THE OPERATION (H & W series) 66 12.6 LOOP SET: SET POINTS REGULATION (H & W Series) 66 12.7 LOOP PROGRAMMATION; OPERATION PROGRAM SETTING (H & W SERIES) 67 12.8 LOOP INFO: RELEASE OF THE REGULATION PROGRAM (H & W SERIES) 69 12.9 LOOP MANUAL CONTROL: MANUAL ACTIVATION OF THE COMPONENTS (H & W

SERIES) 69 12.10 LOOP SELF TEST: ACTIVATION (H & W SERIES) 70 12.11 LOOP SUPERVISION: ACTIVATION OF THE PROGRAM (H & W SERIES) 70

13 ALARM MASKS (H & W SERIES) 71 14 UNIT CONFIGURATION: MEANING AND USE OF THE MASKS FOR SERIES K AND R 75

14.1 MANUFACTURER LOOP: MASKS FOR THE COMPONENTS CONFIGURATION (K & R SERIES) 75

15. PROGRAMMING AND CONTROL OF THE UNITS FUNCTIONMENT: (K & R SERIES) 80 15.1 LOOP MENU: READING OF VALUES SIGNALLED BY THE FEELERS (K & R SERIES) 80 15.2 MANTAINANCE LOOP: READING OF THE WORKING HOURS OF THE COMPONENTS (K &

R SERIES) 81 15.3 I/O LOOP: INPUT/OUTPUT: READING OF STATUS OF THE COMPONENTS (K & R SERIES) 82 15.4 LOOP CLOCK: SETTING OF THE OPERATION (K & R SERIES) 83 15.5 LOOP SET: SET POINTS REGULATION (K & R SERIES) 83 15.6 LOOP PROGRAMMATION; OPERATION PROGRAM SETTING (K & R SERIES) 84 15.7 LOOP INFO: RELEASE OF THE REGULATION PROGRAM (K & R SERIES) 85 15.8 LOOP MANUAL CONTROL: MANUAL ACTIVATION OF THE COMPONENTS (K & R SERIES) 85 15.9 LOOP SELF TEST: ACTIVATION (K & R SERIES) 85 15.10 LOOP SUPERVISION: ACTIVATION OF THE PROGRAM (K & R SERIES) 86

16 ALARM MASKS MEANING (K & R SERIES) 87


1. pCO2 MICROPROCESSOR

The pCO2 represents the evolution of the well-known pCO electronic control. There are of three sizes, differentiated according to the I/O and power requirements:

1. pCO2 SMALL 2. pCO2 MEDIUM 3. pCO2 LARGE.

1.1 FEATURES COMMON TO ALL THE VERSIONS

o 16-bit microprocessor, 14 MHz, internal registers and 32 bit operation, 512 Byte internal RAM; o up to 6 MByte FLASH MEMORY per program; o 256 kByte static RAM, upon prior request expandable to 1 MByte; o 1 RS485 serial port for pLAN; o ready for connection to RS485 supervisory network; o clock with replaceable lithium battery; o 56 Byte of battery backed-up RAM; o selection of address and LEDs for pLAN; o DIN plastic case for installation on omega rail; o 24Vac/Vdc power supply; o telephone connector for pCO terminals; o telephone connector for synoptic; o LED power signal.

1.2 FEATURES OF pCO² SMALL (H/R-K)

o 8 optically-isolated digital inputs, 24Vac 50/60Hz or 24Vdc; o 8 relay digital outputs (1 of which with changeover contact); o 2 analogue inputs, passive between NTC, PT1000, ON/OFF; o 3 analogue inputs, universal between NTC, 0÷1V, 0÷10V, 0÷20 mA, 4÷20mA; o 4 analogue outputs, 0÷10 V.

1.3 FEATURES OF pCO² MEDIUM (H/R-K)

o 14 optically-isolated digital inputs, 24Vac 50/60Hz or 24Vdc; 12 + 2 o 13 relay digital outputs (1 of which with changeover contact); 10 + 3 o 2 analogue inputs, passive between NTC, PT1000, ON/OFF; 2 o 6 analogue inputs, universal between NTC, 0÷1V, 0÷10V, 0÷20 mA, 4÷20mA; 4 o 4 analogue outputs, 0÷10 V.

1.4 FEAUTURES OF pCO² LARGE (H series only)

o 18 optically-isolated digital inputs, 24Vac 50/60Hz or 24Vdc; o 4 optically-isolated digital inputs, 24Vac/Vdc or 230Vac (50/60Hz); o 18 relay digital outputs (3 of which with changeover contacts); o 4 analogue inputs, passive between NTC, PT1000, ON/OFF; o 6 analogue inputs, universal between NTC, 0÷1V, 0÷10V, 0÷20 mA, 4÷20mA; o 6 analogue outputs, 0÷10 V; o 1 serial port for I/O expansion.

1.5 HARDWARE STRUCTURE

The structure of the pCO2 forecasts:

1. the pCO 2 control, fitted with a 16-bit microprocessor for running the regulation program, and the set of

terminals required for connection to the controlled devices (for example: valves, compressors, fans). The program and the set parameters are saved permanently in FLASH memory, prefaning data loss in the event of power failure (without requiring a back-up battery). The software dowload could be made trow personal computer or a special programming key. The pCO 2 also allows connection to a local pLAN network made up of a series of pCO² and terminals. Each board can exchange information (any variable, digital or analogue, according to the application software) at high transmission speeds. Up to 32 units can be connected, sharing information in very short times. The connection to the supervisor/telemaintenance serial line, based on the


RS485 standard, is made using the relevant optional serial boards and the Tecnair LB communication protocol. The local network function is not available for surgical and clean rooms units: series W and H.

2. the user terminal, also managed by microprocessor, fitted with display, keypad and LEDs is connected to

pCO² mother board. The user terminal allows:

o the initial programming of the machine, with password-protected access to guarantee security; o the possibility to modify, at any time, the fundamental operating parameters, optionally protected by

password; o the display and acoustic signalling (buzzer) of the alarms detected; o the display of all the quantities measured; o the possibility to switch ON and OFF the air conditioner on wich PCO2 in installed.

The connection of the user terminal to the card basic pCO² is not necessary for the regime operation of the unit. This means that is possible to disconect the terminal from the basic card after the initial planning of the fundamental parameters.

Tecnair LB provides tree different type of user terminal: 1. Display LCD 4x20 for wall mounting (cfr. Figura 12). 2. Display LCD 4x20 for panel mounting (cfr. Figura 13). 3. Display LCD 16x30 graphic for panel mounting (cfr. Figura 14) for special application: temperature and

humidity monitoring or chinese and cyrillic languages.

Figure 1: example of pCO2 connections.

The hardware structure is defined as follows:

1. user terminal with keypad, display and LED signals; 2. pCO2 (SMALL version); 3. pCO2 (MEDIUM version); 4. pCO2 (LARGE version); 5. telephonic type connecting cable between terminal and pCO2 ; 6. . connecting cable AWG20/22 for plan connection of more cards


7. . terminals for a printer (provided by customer) connection; 8. . AWG20/22 cable for connection to a remote monitoring system 9. connection to the expansion (large card only) 10. . computer for remote control

1.6 MAIN FUNCTIONS − Modulating or ON/OFF control of suction and expulsion air temperature. − Modulating control of suction air humidity − Dehumidification control − Complete alarms control. − Units rotation (K and R series). − Hour handing contro − Room overpressure and depressore control (only for series OH and OW) 1.7 CONTROLLED COMPONENTS − 1 o 2 compressors. − Tree points (throttling) valve for chilled water coil (K and R series).. − Modulating valve for chilled water coil (K and R series). − Electric resistances with 1step, 2 steps or modulating. − Tree point s (throttling) valve for hot water haeting coil − Modulating valve for hot water haeting coil. − Supply fan − Exaust fan (only for series OH and OW) − Modulating humidifier (trought an external card). 1.8 OPTIONS −−−− RS485 serial board for supervisor and telemaintenance −−−− Seriale card for LONWORKS connection.

1.9 PROGRAMMING All the parameters could be setted by the user terminal keypad installed on the unit or by the remote user

interface..


2. pCO2 MOTHER BOARD

2.1 pCO2 MOTHER BOARD LAYOUT

The following is a description of the pCO2 with reference to the basic layout. (LARGE version).

Figure 2: layout of base pCO2.


reference figure

Table 2: inputs/output

In table 2.1 is showed the distribution of input and outputs in the different version of pCO2 microprocessor. Analogue inputs Digital inputs Digital outputs

CARD Passive Universal Total Analogueoutputs 24 Vac/Vdc 230 Vac

24 Vac/VdcTotal NO

contacts changeov.

contact Total

SMALL 2 3 5 4 8 0 8 7 1 8 MEDIUM 2 6 8 4 12 2 14 10 3 13 LARGE 4 6 10 6 14 4 18 13 5 18

In surgical room and clean room air conditioners are installed two pCO2 card, one small and one large. In the attached table is showen the different inputs and outputs on the two card.

ANALOGICAL INPUTS BOARD “A” BOARD “B”

AIN DESCRIPTION AIN DESCRIPTION B1 Ambient humidity B1 TAM humidifier 2 B2 External humidity B2 Conductability humidifier 2

B3 Differential pressure Suppy air flow 1

B3 Differential capacity supply pressure/humidity

B4 Antifreeze temperature Room temperature

B4 Anti freeze temperature 1

B5 Supply air temperature limit B5 Anti freeze temperature 2

B6 Internal pressure room 1 B6 Internal pressure room 2 B7 TAM humidifier 1 B7 Remote set temperature B8 Conductability humidifier 1 B8 Remote set humidity

�B9 External temperature B-- NTC/ 0-1V / 0-10V / 4-20mA B10 Antifreeze temperature B-- NTC / PT1000 / On-Off

Table 3.1: ingressi analogici.

DIGITAL INPUTS LARGE CARD SMALL CARD

DIN DESCRIPTION DIN DESCRIPTION ID1 Level sensor 1 ID1 cold disabilitation ID2 Thermal supply fan 1 ID2 hot disabilitation ID3 Low pressure compressor 1 ID3 Fire/smoke presence ID4 Low pressure compressor 2 ID4 Anti-chilling (after re-heating) ID5 High pressure/thermic compressor 1 ID5 Circulating allarm ID6 High pressure/thermic compressor 2 ID6 Damper status ID7 Themrical post heating coil ID7 Terminal filter dirty ID8 Remote stand by command ID8 Level sensor 2 ID9 Supply fan status 1 ID9 Flooding presence

ID10 Expulsion fan/damper status ID10 Sterilization cycle ID11 UPS recovery pack ID11 Unit in depression 15Pa ID12 Remote On/off (fromremote) ID12 Thermical supply fan 2 ID13 Thermal expulsion fan 1 ID13 Themrical expulsion fan 2


ID14 External air prefilter clogged ID!4 Supply fan status 2 ID15 Clogged filter ID* Inputs 110/230 � 24 Vac ID16 External air filter clogged ID17 thermical re-heating coil ID18 Remote consensor alarm

Table 3.2: digital inputs.

DIGITAL OUTPUTS LARGE SMALL

DOUT DESCRIPTION DOUT DESCRIPTION 1C/1O Supply fan 1 1C/1O inversion Valve circuit 1 2C/2O Compressor 1 2C/2O inversion Valve circuit 2 3C/3O Compressor 2 3C/3O 4C/4O Humidificator 4C/4O 5C/5O Humidifier charge 5C/5O 6C/6O Humidifer discharge 6C/6O 7C/7O Opening valv.heat.3P/ Hot gas/ Res. 1 7C/7O 8C/8O Closing valv. heat.3p/ Res. 2 8C/8O 9C/9O Opening reheating valve. 3P/ Res.post. 1 10C/10O Closing valv. Re-heating.3p/ Res. post. 2 11C/11O Expulsion fan 12C/12O Dirty filter alarm (from remote) 13C/13O Small alarm (from remote) 14C/14O Big alarm (from remote) 15C/15O Remote unit status (from remote) 16C/16O Supply damper./expuls./suction 17C/17O Circulator 18C/18O

Table 3.3: digital exits.

Analogue outlets LARGE CARD SMALL CARD

AOUT DESCRIPTION AOUT DESCRIPTION Y1 cold Valv. / inverter compr./by pass Y1 Post heaitng valve Y2 Hot Valve Y2

Y3 Inverter supply fan 1 Y3 Supply fan inverter 2 Y4 Expulsion nverter fan Y4 Inverter expulsion fan/damper 2 Y5 Fresh air and ricirculation damper Y6 Network steam

Table 3.4: analogical outputs


2.3 pCO2 CARD SUBSTITUTION

The following warnings must be respected for correct connection: − Electrical power supply different from that specified can seriously damage the system;. − Use cable plugs suitable for the terminals being used. Loosen each screw and insert the cable plug, then tighten

the screws. − At the end of the operation lightly tug the cables to check that they are tight; − Separate as much as possible the probe signal and digital input cables from the inductive load and power cables,

to avoid possible electromagnetic disturbance. Never use the same channelling (including that used for the electrical cables) for the power cables and probe cables. Avoid the probe cables being installed in the immediate vicinity of power devices (contactors, circuit breakers or others);

− Reduce the length of the sensor cables where possible and avoid spiralling around power devices. The probe connection must be made using shielded cables (minimum cross-section for each lead: 0.5 mm 2 );

− Avoid touching or nearly-touching the electronic components on the boards, to avoid (extremely dangerous) electrostatic discharges from the user to the components;

− If the power supply transformer secondary is earthed, check that the ground wire corresponds to the lead which goes to the control and enters terminal G0;

− Separate the power supply to the digital outputs from the power supply to the pCO 2 ;

− Do not fasten the cables to the terminals by pressing the screwdriver with excessive force, to avoid damaging the pCO 2 .

Before installing the card it is necessari to download the control program inside the FLASH memory of the pCO2 card by a PC or by the programming key.

2.3.1 Power supply

The pCO 2 can be powered at: 24Vdc and 24Vac ±15%, 50/60Hz. The maximum power consumed is Pmax = 20W. For alternating current power supplies, during installation use a Class II safety transformer, rated to at least 50VA and with a 24Vac output. This is valid for the power supply to just one pCO 2 control. If you supply more pCO 2 controller with the same transformer, its rated voltage must be n. x 50VA, where n. is the number of controllers to be supplied by the transformer, independently from the controller version.

Figure 3: power supply. The following table summarises the states of the power LEDs. � Yellow led power supply active / not active; � Red led ON probe power current overload signal (short circuit or anomaly) � Red led OFF regular probe power.

2.3.2 Connecting the analogue inputs

The pCO² analogue inputs can be configured for the more common sensors on the market: NTC, PT1000, 0÷1V, 0÷10V, 0÷20mA, 4÷20mA..

The 21Vdc available at the +VDC terminal can be used for the power supply to the active feelers, the maximum current being 200mA, protected by circuit-breaker against short-circuits. The activation of the latter is signalled by the switching on of the red LED on the right (cfr. Figura 4).

Figure 4: overcurrent segnalation


1. Connecting active temperature and humidity feelers

The pCO 2 can be connected to all the Carel series AS*2 active temperature and humidity feelers configured as 0÷1V or 4÷20mA. The inputs which can accept these sensors are: B1, B2, B3, B6, B7, B8. The inputs must be pre-configured for 0÷1V or 4÷20mA signals by the application software resident in the flash memory. The following shows the connection diagram:

Figure 5: connecting diagram for acuive feelers. pCO 2 terminals Probe terminals Description

GND M Reference +Vdc +(G) Power supply

B1, B2, B3, B6, B7, B8 Out H, ntc Universal probe inputs

Table 4: connecting beetwen pCO2 and active feelers.

2.3.2.2 Connecting the universal NTC temperature feelers

The analogue inputs from B1 to B10 are compatible with 2-lead NTC sensors. The inputs must be pre-configured for NTC signals by the application software resident in the flash memory. The following shows the connection diagram::

Figure 6: NTC feelers connection.

pCO 2 terminals NTC probe lead GND, BC4, BC5, BC9, BC10 1

B1, B2, B3, B4, B5, B6, B7, B8, B9, B10 2

Table 5: connection beetwen pCO2 and NTC feelers.

NOTE: the two NTC probe leads are the same, in that they have no polarity; therefore it is not necessary to respect any specific order when connecting to the terminal block.

2.3.2.3 Connecting the PT1000 temperature feelers

The pCO 2 features connection for PT1000-type 2 lead sensors for all high-temperature applications; the operating range is �100 o C ¸ 200 o C. The inputs which can accept this type of sensor are B4, B5, B9, B10. The inputs must be pre-configured for PT1000 signals by the application software resident in the flash memory. The following shows the connection diagram::

Figure 7: PT1000 probe connection.


pCO 2 terminals

Probe 1 Probe 2 Probe 3 Probe 4 PT1000 probe lead

BC4 BC5 BC9 BC10 1 B4 B5 B9 B10 2

Table 6: connecting beetwen pCO2 and PT1000 feelers. WARNING: · In order to get a correct measurement from the PT1000 probe it is necessary to connect each probe lead to one single terminal as shown in fig. 4.4.3.1; · The two leads of the PT1000 feelers do not have polarity. It is not necessary to respect any polarity order when connecting to the terminal block. 2.3.3 Connecting the digital inputs

The pCO 2 features up to 18 digital inputs for connecting safety devices, alarms, device status, remote triggers. These inputs are all optically-isolated. They can work at 24Vac, 24Vdc and some at 230Vac.

WARNING: separate the probe signal and digital input cables as much as possible from the inductive load and power cables, to avoid possible electromagnetic disturbance..

The following figure represents one of the more common connection diagrams for the 24Vac digital inputs..

Figure 8: connecting 24 Vac digital inputs.

IMPORTANT WARNINGS: to maintain the optical isolation of the digital inputs a separate power supply must be used just for the digital inputs; the presence of voltage at the ends of the contact is a normal operating condition, while the absence of voltage is an alarm condition. In this way any interruption (or disconnection) of the input can be signalled. Table 10 summarising the digital inputs according to the available versions.

Version No. opto-isolated inputs 24 Vac 50/60 Hz o 24 Vdc

Opto-isolated inputs 24 Vac 50/60 Hz o 230 Vac 50/60 Hz Total

Small 8 0 8 Medium 12 2 14 Large 14 4 18

Table 10: summarising digital inputs.

When remoting the analogue inputs, the cross section of the leads must be as reported in the following table.

Size (mm 2 ) for up to 50m Size (mm 2 ) for up to 100 m 0,25 0,5

Table 11: cross section for analogical inputs connections.


2.3.4 Connecting the analogue outputs

The pCO 2 provides up to six optically-isolated 0÷10V analogue outputs powered externally at 24Vac/Vdc. Figure 10 shows the connection wiring diagram; the 0V (zero) voltage of the power supply is also the reference for the voltage of the outputs.. Table 12 summarises the distribution of the analogue outputs according to the available versions.When remoting the analogue inputs, the cross section of the leads must be as reported in the table 13

Figure 10: digital autputs connections.

Version Analogical outputsSmall 4 Medium 4 Large 6

Table 12: summarises the the analogue outputs.

Size (mm 2 ) for up to 50m Size (mm 2 ) for up to 100m

0,25 0,5

Table 13: cross section for digitall inputs connections. 2.3.5 Connecting the digital outputs

The pCO² features up to 18 digital outputs with electromechanical relays; upon request with solid state relays (SSR). To simplify assembly the common terminals of some relays have been grouped together. If the diagram is used, the current at the common terminals must not exceed the rating (nominal current) of a single terminal, that is 8A resistive. The relays are divided into groups, according to the distance of insulation. Inside each group, the relays have just single insulation and thus must have the same voltage (generally 24Vac or 110¸230Vac). Between the groups there is double insulation and thus the groups can have different voltages.

Figure11: digital outputs connection

Version NO contact Contatti in scambio Total outputs Small 7 1 8 Medium 10 3 13 Large 13 5 18

Table 14: summarising table for digital outputs


3. USER TERMINAL

3.1 USER TERMINAL MODEL

1) Display LCD 4x20 for wall or panel mounting (pCOT)

FEATURES � Number of rows: 4. � Number of columns: 20. � Font height: 5 mm.

Figure12: Display LCD 4x20 for wall or panel mounting.

2) Display LCD 4x20 for unit mounting (pCOI):

Figure13: Display LCD 4x20 for unit mounting.

3) LCD Graphic Display for unit mounting (pCOIG)

FEATURES � Number of rows: 16. � Number of columns: 30.

Figure14: LCD Graphic Display for unit mounting.

The graphic dipaly needs a special control software fitted in one EPROM on the rear side of the graphic controller (cfr. Figura 15).

FEATURES - Number of rows: 4. - Number of columns: 20. - Font height: 5 mm


REFERENCE FIGURE 15 2. connector to the inverter and signal management card for the display 3. connector for the optional printer card). 4. telephone-type connector card for terminal connection to the pCO 2 or junction TCONN6J000 4. buzzer for acoustic alarm signals 5. metal-plated mounting holes 6. connector for connection to an additional keypad card 7. EPROM program and mounting/direction orientation 8. connector for real time clock/32kB EEPROM 9. power connector 10. protective screen.

Figure15: graphiuc dipaly card. - It is possible to regulate the contrast of every model of display.

The user terminal is used only for programming the machine parameters. The models with a 4x20 LCD display are fitted with a trimmer for adjusting the contrast of the display. The trimmer can be accessed using a flat-head screwdriver through the hole located in top-right corner of the rear cover (models PCOT*) or by removing the rear cover (models PCOI*); in the latter case the trimmer is located on the top-right corner of the main board itself. For models with graphic display the contrast con be adjusted by simultaneously pressing the Menu and or Menu and buttons. 3.2 USER TERMINAL KEYBOARD The terminals just described are endowed with a keyboard (cfr. Figure 16 and 17) that allows: � the planning of the parameters of operation of the conditioner; � the visualization of the state of the conditioner and his/her components; � the lighting and the turning off of the conditioner

Figure 16: Terminal keyboard pCOT. The number 1 indicates the working LED signals.

Figure 17: Terminal keyboard pCOI and pCOIG. The number 1 indicates the working LED signals.


3.3 TYPICAL USE OF THE BUTTONS IN STANDARD APPLICATIONS BUTTON NAME FUNCTION Menù button displays the values measured by the feelers Maintenance button displays the values relating to the maintenance of the

devices (working hours and operating hour counter reset);

Printer button accesses the group of screens for printer

management (where included); I/O button displays the status of inputs and outputs (both digital

and analogue); Clock button allows the display/programming of the clock (if

present); Set button allows the Set-Point setting. Programming button allows the various operating parameters to be set

(safety parameters, thresholds) Programming+menu button by pressing simultaneously these buttons you access

the unit configuration Info button displays the version of the application program and

other information;. Orange button allow to modify the user terminal used. The LED next to each button are illuminated when the relative function is active BUTTON NAME FUNCTION

On-off button switches the unit on or off. The green LED that lights up in the button shows if the machine is turned on;

Alarm button used for displaying or manually resetting the alarms

and resilencing the buzzer. If the button lights up (red), at least one alarm has been detected;

Up/downwards arrow button allows to manage the currently displayed screen and

to set the values of the control parameters Enter button to confirm the set data. The button is constantly back-

lit (yellow) indicating the presence of mains power.. The display pCOT foresees on the façade a small tray that opens with a maximum inclination of 150°. With closed small tray it is only accessed the keys on-off, alarm, arrow up/down and enter. To access the remaining keys is owed to open the small tray. When the small tray is close are visible only the three LEDs that retroilluminate the keys on-off, alarm and enter. The other LEDs are only visible to open the small tray.


3.4 INSTALLING THE USER TERMINAL

The connection between the user terminal and pCO 2 is made using a 6-way telephone cable. To make the connection simply insert the telephone connector in terminal J10 of the pCO 2 and in terminal B on the user terminal. Insert the connector fully into in the terminal until it clicks into place.

To remove the connector simply press lightly on the plastic flap and remove the cable.

For the model PCOIG only connect the 24Vac (30VA) power supply to the screw terminal block. (cfr. Figura 15).

The pCO2 can also work without the terminal; do not disconnect and then reconnect the terminal to the pCO 2 without first having waited around 5 seconds

Figure 189: user terminal connection. 3.4.1 Installing the program EPROM in the terminal with graphic display All the information relating to the management of the graphic display are created by the application software contained in an EPROM. To install the EPROM be extremely careful when handling this component, keeping the following in mind: − remove the power supplì from the graphic display; − togliere lo schermo di protezione svitando le relative viti; − before touching the EPROM, touch a grounded part to discharge the necessary static electricity

accumulated (do not touch any powered devices); − insert the EPROM in the relative socket on the board, checking that all the pins are inserted correctly

in place (exact correspondence between the pins and the slots; furthermore, do not bend the pins, carefully inserting them into the socket,holding the component by opposite end to the pins);.

− verificare che la �tacca� sulla superficie della EPROM sia nella direzione della �tacca� di riferimento serigrafata sulla scheda (cfr. Figura 19).

− Once the EPROM has been inserted remount the board which acts a shield or if necessary the optional printer board, before closing the cover, and place the terminal in operation.

− Per rimuovere la EPROM è utile l�impiego di un piccolo cacciavite, avendo cura di non rovinare le piste del circuito stampato o qualche altro componente contiguo.

IMPORTANT WARNING: the EPROM must be inserted/removed from the socket only when the terminal is off..

Figura 19 installation of the eprom on the graphic terminal.


4. pLAN NETWORK ONLY FOR K AND R SERIES

As already mentioned, the pCO2 controls can be connected to pLAN local network, allowing the communication of data and information from one location (node) to another.

a maximum of 6 units can be connected (including I/O interface cards and user interface cards)and up to a maximum of 6 air conditioners each one equipped with an I/O interface card and user interface, be it private, open or unique. This means that it is possilbe to connect in to local network: - A maximum of 16 conditioners each endowed with card interface I/O and user terminal, deprived motto. - A maximum of 31 conditioners each endowed with card interface I/O and a terminal shared by all the units. It is important to underline that the set-point�s value of temperature and humidity planned online on a conditioner pLAN are immediately transfered to the whole other unities connected online local. If in a pLAN one or more terminal pCO2s are disconnected anymore or malfunzionanti, the program of control keeps on working correctly on every basic card pCO2, assuring the continuity of the regulation.

All the devices connected to the pLAN network are identified using their own individual address. If the same address is assigned to more than one unit the network will not work. As the terminals and the pCO2 I/O boards use the same type of address, terminals and pCO2 boards can not have the same identifier. The values which can be selected for the address range from 1 to 32 for the terminals and from 1 to 31 for the I/O boards.

The addresses are set for the terminals using the dip-switches on the rear, and on the pCO2 boards using the dip-switches located near the telephone connector..

Figura 20: pLAN connection scheme. To the starting of a net n's pLAN conditioners, only n-1 conditioners are activated and one remains in stand-by

to activate him: - When one of the working units notices a serious alarm. After the elimination of the alarm the unit initially in stand- by he returns in stand-by and, contemporanemente, the unit that is stopped takes back its normal operation. - When the other in operation conditioners don't succeed in maintaining the environmental conditions (temperature

and humidity) to the preset values. In this case previously the in operation conditioners don't stop him. The conditioner intervened in help to the other ones returns in stand-by to the attainment of the set-point planned.

� After a time planned by the user to choice among 6, 12 or 24 hours. Contemporarily, one of the in operation units are disarmed and passes in stand-by. This option is also chimata hourly rotation of the units. The rotation among the unities online pLAN happens according to the following scheme (the unity in stand-by is the underlined one): ! 2 unit configuration: 1-2 / 1-2 / 1-2 / � ! 3 units configuration: 1-2-3 / 1-2-3 / 1-2-3 / 1-2-3 / 1-2-3 / 1-2-3 / � ! 4 units configuration: 1-2-3-4 / 1-2-3-4 / 1-2-3-4 / 1-2-3-4 / 1-2-3-4 / 1-2-3-4 / 1-2-3-4 / 1-2-3-4� ! 5 units configuration: 1-2-3-4-5 / 1-2-3-4-5 / 1-2-3-4-5 / 1-2-3-4-5 / 1-2-3-4-5 / 1-2-3-4-5 / 1-2-3-4-5 /

1-2-3-4-5 / 1-2-3-4-5 / 1-2-3-4-5 / � ! 6 units configuration: 1-2-3-4-5-6 / 1-2-3-4-5-6 / 1-2-3-4-5-6 / 1-2-3-4-5-6 / 1-2-3-4-5-6 / 1-2-3-4-5-6 /

1-2-3-4-5-6 / 1-2-3-4-5-6 / 1-2-3-4-5-6 / 1-2-3-4-5-6 / 1-2-3-4-5-6 / 1-2-3-4-5-6 / �


The serious alarms that the lighting of the unity provokes in stand-by are the followings: − High pressure compressor 1. − High pressure compressor 2. − Low pressare compressor 1. − Low pressare compressor 2. − Thermic fan. − Air flow. − Electircal thermic resistence. − Eprom down. − Smoke/fire/water presenze on the floor. − Room temperature feeler broken or disconnected. − Room humidity feeler broken or disconnected − Supply air feeler broken or disconnected − Water supply feeler broken or disconected − Incoming water temperature/supply air feeler broken or diconected Note: in a network made up of more units (ie 3 units, 2 working and 1 not working) in case both working units break down the third will behave like a single unit.

4.1 pLAN LOCAL NETWORK COMPONENTS The necessari comonents to build a pLAN network are the following:

− pCO2 basic card (minimum 2) installaled inside the elettrical pannel of the air conditioners to connect in local network.

− User termianls (optional) − TCON6 conenction cards to be used for longer distances than 50 m. 4.2 pLAN ELECTRICAL CONNECTIONS

Connection between boards in a pLAN network is carried out using an AWG20/22 shielded cable, made up of a twisted pair plus shield. The boards are connected in parallel, with terminal J11 as the reference. Pay ATTENTION to the network polarity: RX/TX+ on one board must be connected to RX/TX+ on the other boards; the same is true for RX/TX-.

Fig. 21 shows a diagram of a number of boards connected in a pLAN network and powered by the same transformer (typical application: a number of boards connected inside the same electrical panel).

Figura 10: collegamenti elettrici rete locale.

Figure 21 The following figures show the connection diagrams for the various configurations.


1. Remote terminal installation on pLAN network using AWG24 shielded cable with 3 twisted pairs + shield; distance of up to 200 metres..

Figure 22 connection beetween user terminsl and pCO2 card using a AWG24 cable. 2. Remote installation of the terminal in a pLAN network with AWG20/22 shielded cables. Power supply

is independent from the shared terminal.

Figure 23 connection between user terminal and pCO2 card using a AWG20/22 cable. In figure 22the TCON6 card (optional) is visible, it is used to connect the user terminals and the pCO2 cards for

longer distances than 20metri.

Figura 24 TCON6 card.


The connectors A., B and C presents on the card are of 6 pole.telephone type. These connectors can be connected to the basic cards pCO2 and/or user terminals. The connector SC is of screw type to the connections of cables AWG24. In chart 16 the suitable function of the clamps of the present connectors on the same card is shown.

SC screw type connector Pin telephone connector A, B, C Function 0 Screen 1 1 +VRL (≈30V) 2 2 GND 3 3 Rx-/Tx- 4 4 Rx+/Tx+ 5 5 GND 6 6 +VRL (≈30V)

Table 16: TCON6 card connectors functions.

During the connection among pCO2 cards and user terminals it is necessary to avoid that a double feeding reaches theuser terminal. For this intention it is enough to act on the bridges J14 and J15 that allow the interruption of the tension feeding passage. In fact: −−−− J14 and J15 in positions 1-2: the three telephone connectors A, B and C and the screw type connector SC are

connected in parallel and feeding is available on all connectors. −−−− J14 and J15 in positions 2-3: The B and C connecotrs are connected in parallel whilst the A and SC

connectors are connected in parallel between themselves. In this case the feedign tension doesn�t pass throguth the A-SC connectors to the B-C connectors.

If the presence of the feeding is desired on all the connectors, both the bridges have to be in position 1-2. The shunt doesn't work if the two bridges have different positions one in comparison to the other.

Employing a cable AWG24 the metallic structure of the card TCON6 has to be connected to the earth taking of the car.

The TCON6 card has to be installed as near as possible to the basic card. 4.2.1 pLAN LOCAL NETWORK CONNECTION EXAMPLES

TCON6 card with jumpers J14 and J15 in positions 2-3.

If a basic pCO2 card is conencted to connector C (B) the ekectrical feeling garantide is given also to connector B (C) for the feeding of a user terminal. The B and C connectors are separated from the connectors A and SC.

Figure 115 example of pLAN connection with TCON6.


TCON6 card with jumper J14 and J15 in positions 2-3.

If a basic card pCO2 is connected to the connector A, feeding is also available to the SC connector . In this case it is entirely possible to connect the two cards between themselves by a derivation through the connector SC, so that the feeding is available to the connector A of the second card TCON6. The connection among the two TCON6 cards must be put into effect with a AWG24 cable .

T: Telephone cable AW24: 3 twisted pair

Figura 126 example of pLAN connection with TCON6. TCON6 card with jumper J14 and J15 in positions 2-3.

If a basic card pCO2 is connected to C (B), the feeding from it is guaranteed and also available to the connectors B (C), and SC. This type of configuration is necessary if two terminals must be fed from the same mother card. In figure 27 the connection scheme is shown.

Figure27: example of pLAN connection with TCON6.


pLAN local network connection scheme with AWG24 cable. When the connection among cards TCON6 needs to transfer feeding, the wirings have to be suitable as

described in charts 17 and 18 to avoid a double feeding to the basic card.

AWG24 cable 3××××2 SC connection plug Functon Cable wires AWG24

0 Mass Screen 1 +VRL (≈30V) First couple: wire A 2 GND Second couple: wire A 3 Rx-/Tx- Third couple: wire A 4 Rx+/Tx+ Third couple: wire B 5 GND Second couple: wire B 6 +VRL (≈30V) First couple: wire B

Tabelle 17: connection scheme with cable AWG24 3×2.

CABLE AWG24 2××××2 SC connection plug Function FCable wires AWG24

0 Mass Screen 1 +VRL (≈30V) Not used 2 GND Second couple: wire A 3 Rx-/Tx- Third couple: wire A 4 Rx+/Tx+ Third couple: wire B 5 GND Second couple: wire B 6 +VRL (≈30V) Not used

Tabelle 18: connection scheme with cable AWG24 3×2.

4.3 pLAN LOCAL NETWORK CONNECTION EXAMPLES 4.3.1 LOCAL TERMINAL CONNECTION

In figure 28 an expample of local network pLAN connection is visibile between the pCO2 and local user terminals.

Figure 138 local network terminal example.


In formulation base of the jumpers on TCON6 the AWG24 cables connected to the pCO21card and pCO22 don't transmit the feeding. Instead, cable AWG24 that goes out of TCON6 connected to the card pCOn transmits the feeding. The first two cards TCON6 in figure 28 are connected as suitable in figure 29:

Quando la When the feeling tension from the pCO2 base card arrives to the B (C) connectors, also to the C (B) connector the same tension is present.

Figure 29 connection with AWG24 2×2.

The third card TCON6 in figure 29 is connected as in figure 28: When the feeling tension from the pCO2 base card arrives to the B or C or A connectors, also to the A,C,SC or A.B,SC connectors have the same tension .

Figure 30: connection with AWG24 3×2.


4.3.2 LOCAL AND REMOTE TERMINAL CONNECTION In figure 31 a suitable local connection ( smaller distance connection than 50 meters) and a remote connection (distance of connection superior than 50 meters). For the local connection it is sufficient to use the cable AWG22-24. Instead, for the remote connection it is necessary to use the cable AWG24-32. If the connection distance among the basic pCO2 card and the user terminal is smaller then 50 meters it is possible to use a telephone cable.

Figure 31: an example of cennection of local terminal with a user terminal 4.3.3. CONNECTION OF 3 (OR MORE) CARDS WITH A SINGLE TERMINAL (LOCAL AND/OR REMOTE)

In figure 32 an example of a basic conenction between pCO2 cards with a single terminal is shown. This soulution doesn�t prove usefull in case of use of a graphival display for the chinese language. In that case it would be necessary tp use for each unit a specific remot terminal.

Figure 32: an example of cennection of more basic cards with a single user terminal


4.4 ADDRESSING OF THE UNITS IN THE Plan local network All the connected devices online local pLAN are identified by a "net address ." Because the pLAN network can work every net address has to be univocal. This means that terminal and/or basic pCO2 cards cannot exist with the same identifier. The selectable values for the addresses vary from 1 to 32 for the terminals and from 1 to 31 for the cards basic pCO2. Addresses are planned through dipswitch posted on the back of the terminals and on the cards pCO2. It is possible to insert local shared terminal also online. This terminal allows the supervision of the whole local net and can also be situated in a different environment from the one to BE conditionED. The addressing of the connected units into the local network is separated in two phases: 1. hardware addressing 2. software adressing.This phase always coems after the hardware one.. 4.4.1 Addressing the pCO 2

The address can be set in the range 1÷31 using the dip-switches 1÷5. (cfr. Figura 33) .

Figure 33 dipswitch on pCO2 card.

The value of the address is obtained as in Tab. 19.

ADDRESS SW1 SW2 SW3 SW4 SW5 0 NOT ADMITTED 1 ON OFF OFF OFF OFF 2 OFF ON OFF OFF OFF 3 ON ON OFF OFF OFF 4 OFF OFF ON OFF OFF 5 ON OFF ON OFF OFF 6 OFF ON ON OFF OFF 7 ON ON ON OFF OFF 8 OFF OFF OFF ON OFF � � � � � � 31 ON ON ON ON ON

Tabelle19: deep switch setting

To obtain the value of the planned address on the user terminal or on the card pCO2 we can use the following equation: Addr = P(SW1) + P(SW2) + P(SW3) + P(SW4) + P(SW5)

where: − Addr is the value of the set adress − P(SW1)÷P(SW5) parameters which positions are set by the Deep Switchs 1÷5 and can be understood by the

following table

SW1 SW2 SW3 SW4 SW5 Status OFF ON OFF ON OFF ON OFF ON OFF ON

P 0 1 0 2 0 4 0 8 0 16

Table 20: parameter value P(SW1)÷P(SW5)


The lighting of the three leds (R, G e Y in figure 33) indicate the following:

LED STATUS DESCRIPTION

ON The base card is connected with the other units of the pLAN network and works correctly. GREEN

OFF The base card is not connected with the network or does not receive signals from the network.

FLASHING The base card is transmitting information on the network. OFF The base card is not transmitting. YELLOW OFF No hardware or software problem ON Software not compatible RED FLASHING Hardware not compatible.

Tabelle 21: meaning of the leds on the rooting card of the local network.

To the lighting of the basic card all the leds ignite, to go off after a few second. After 5-15 seconds, the leds begin to work as described in chart 21. 4.4.2 Addressing the terminals

The address of the terminals is set using the dip-switches at the rear. (cfr. Figure 34). L�indirizzo può assumere i valori indicati in Table 19.

The graphic terminal does not need to be addressed as the address is established by the program EPROM..

Figure34 the rear view of the terminal board. 4.4.3 INDIRIZZAMENTO SOFTWARE DELLE UNITÀ COLLEGATE IN RETE LOCALE pLAN After having effected the hardware addressing of the card and the terminal, it is necessary to also effect the software addressing of the components of the local network. The software configuration of the components of a local pLAN network must have effected: − During the first configuration of the pLAN local network − At evry variation of the components of the pLAN local network

The software adressing procedure can be executed form a single termianl, as long as al the others have previously been connected and adressed.

o Each pCO 2 board, connected to the network, can manage more than one terminal (max 3). The display of the values on each occurs simultaneously and not independently from one another; it is like having a series of keypads and displays connected in parallel.

o Each terminal associated to a specific board can be private or shared. o A terminal is considered private if it alone displays the output of just one I/O board. o A terminal is considered shared if, either automatically or via keypad, it can be switched between a number of

control boards.

The data relative to the configuration of the local network is store in the EPROM memory of a single base card. In Figure 35 an example of private and conjuncted conenction is shown.


Figure 35: example of a shared terminal is associated to 4 I/O boards, In this example the shared terminal is associated to 4 I/O boards, yet at this moment only no. 1 can display data and receive commands from it..

Pushing the �orange� button (cfr. figure 36) it is possibile to vary in a cyclic succession (1=>2=>3=>4=>1....) the

base card so to comunicate with the conjunct display.

Figure36: orange button 4.5 CONFIGURATION EXAMPLE OF pLAN LOCAL NETWORK The sequence of the operations described subsequently refers to the case in which to a card of address 2 are connected a private terminal of address 3 and a shared terminal of address 1. 1. To connect all the cards bases and the user terminals that compose the local net pLAN 2. To plan 2 as address for the basic card pCO: dip-switch SW2 in position ON and all other dip-switches in position OFF. 3. To plan 3 as address for the private terminal: dip-switch SW1 and SW2 in position ON and all dip-switches in position OFF. 4. To plan 1 as address for terminal shared: dip-switch SW1 in position ON and all other dip-switches in position OFF. 5. To give tension to the basic card. 6. On the private terminal contemporarily press the keys arrow on, arrow down and enter or the keys menù, maintenance and printer (cfr. Figure 37) for at least 5 seconds up to when on the display the visible mask appears in figure 38


.

Figura 37: Buttons for local networks configuration.

Terminal Adr: 3 I/O Board Adr: __

Figure 3814: first software mask for local network configuration Terminal Adr it is the network address of the terminal set previously by the dip-switches installed on the back

of the same terminal. This value cannot be changed via software. I/O Board Adr it� the network adress to which the terminal is conneted With the keys arrow up/down set 2 as address of the card and press the enter key to confirm the just effected formulation . Following this on the display the mask of figure 39 appears

Terminal config Press ENTER To continue

Figura 39: second software mask configuration for local network. Pressing once again the enter key the mask in figure 43 appears

P:02 Adr Priv/Shared Trm1 03 Pr Trm2 None ___ Trm3 None ___ OK?No

Figura 40: third software mask configuration for local network

In this mask it is possibile to set: − The adress (Adr) of each one of the 3 termainls which can be conencted to the pCO base card. − The terminal type; tried (Pr) or Shared (Sh).

The last field, allows finally to confirm, (OK?Yes) or to annul (OK?No) the effected formulations. To modify the value of every field is enough to press down the keys arrow up/down. To move from a field to the next itis enough to press the enter Key. To go out of the software configuration procedure without varying the formulations previously memorized is enough to wait 30 seconds without pressing any key. Once abandoned the software configuration, on the terminal the principal mask of the management program of the card will be visualized, from which it is possible to read the values measured by the existing feelers.

For the shared terminal the operations are identical to those just described. It simply changes the address of the terminal which is not 3 anymore but 1. Then the mask of figure 38 becomes as in figure 41 and that of figure 40 becomes like the one in figure 42.

Figure41. P:02 Adr Priv/Shared Trm1 03 Pr Trm2 01 Sh Trm3 None ___ OK?Yes

Figure 42.

Terminal Adr: 3 I/O Board Adr: 2


Conferming the settings by pressign the enter key, the main mask of the card control program will be visualised.

IMPORTANT

In the case the regulation program is not predisposed online for the local operation, it is necessary that the network address of the card and of the terminal connected to it is zero. To do this it is sufficient that all the dip-switches of the addressing card and of the terminal are in an OFF position.

In reference to what has been previously dictate, the graphic terminal always needs a program predisposed online for the local operation.

If an addressing card breakdowns whilst the network is in operation, the program informs the user of the situation with an alarm message on the user terminal. 4.6 FUNCTIONMENT MESSAGES OF THE USER TERMINAL

If the base card which controls a terminal is broken or if there are comunication problems on the user terminal the following message appears:

Figure 43. where xx is the address of the broken card.

Instead, if the termianl doesn�t recieve any signal from the base card for 10 seconds on the user terminal the following message appears:

Figure 44.

Simutaneously the green led on the adressing card switches off .

4.7 MONITORING OF THE pLAN LOCAL NETWORK STATUS During the operation it is possible to underline the status of the local network, that is the number and the

typology of the connected units. To fullfill this purpose it is necessary to symultanuesly press the keys arrow on, arrow down and enter or the keys menù, maintenance and printer (cfr. Figure 37) on a user terminal for at least 10 seconds up to when the following mask appears on the display:

Figure 4515.

T: XX indicated the adress of the active terminals. To exit the mask press enter key (Enter to Exit). The symbols _ represent the adresses of the units connected in local network. The base pCO cards are represented by

the symbol and the terminals by the symbol . In figures 46 and 47 to stautses of the local network pLAN are indicated.

In this example two termianls with adresses 4 and 14 are connected in pLAN. Figure 46: example of pLAN local network status.

I/O Board xx Faulty

NO LINK

NetSTAT 1 _ _ _ _ _ _ _ 8 T: xx 9 _ _ _ _ _ _ _ 16Enter 17 _ _ _ _ _ _ _ 24To EXIT 25 _ _ _ _ _ _ _ 32


In this example two termianls are conencted in local network, with adresses 4 and 14, and two pCO base cards with addresses 7 and 10.

Figure 16: example status of the pLAN local network 4.8 DIAGNOSIS OF THE ANOMALYS OF THE pLAN LOCAL NETWORK

ANOMALIES SOLUTIONS

The alarm signal of the termianl turns on without any reason. Resetting the allarm the display is empty.

Same address on more terminal and/or pCO2 basic cards. verify the addressing. One or more terminals have address 0 (zero). verify the addressing. The network is not well wired, cables could exist that short-circuit or that are connected to earth. verify the wiring. A basic card could be broken or have the eprom n ot correctly installed. verify state of the leds on the addressing cards. Jumper J8 of the basic card is not in position 2-3. verify position

The display of some termianls is empty Enter the software configuration procedur of the network and verify the addressing of all the units. Verify addressing software.

The message “NO LINK” appears on the display The termianl receives no network signal Verify cables

The message “I/O board nn fault” appears on the display

The base card with adress nn doesn�t work properly Verify the base card nn.

Green led on adressing card trned off The mother card receives no signal. Verify cables.

Tabel 22: diagnosis of local network anomalys. 4.9 TECHNICAL CARACTERISTICS OF THE pLAN NETWORK − Communication standard RS485. − Baud-rate: 65,2 Kbit/s. − Protocol: Multimaster (propietary Carel protocol). _ Maximum network length: 500 meters.


5 PROGRAMMING KEY

The programming key, which represents one of the more interesting new features of the pCO 2 , can transfer (upload and download) the application software

The application software can be uploaded from the key to the pCO 2 ; in this way the same program can be transferred quickly to a series of pCO 2 boards.

The application software can be downloaded from the pCO² to the programming key; in this way a copy can be made of the application software data and parameters from a particular pCO 2 board. .

To choose one of the 2 functions simply move the switch on the key to the position corresponding to the type of transfer, as listed in Tab. 23.

switch position type of program transfer

1 Upload of the program tothe pCO² from the key)

2 Download acopy of the program from the pCO² to the key

Table 23: functions of Programming key.

To upload the program, run carefully through the following procedure:

1. disconnect power to the pCO² board; 2. place the switch on the key into position 1; 3. remove the �expansion memory� hatch (if possible use the screwdriver as shown in Figure x.x ); 4. insert the key into the relative �expansion memory� connector; 5. press and hold the �up� and �down� buttons together; 6. connect power to the pCO² board; 7. confirm the operation with the �enter� button; 8. wait until the display on the user terminal shows: xxxxxxxx; 9. disconnect power from the pCO² board; 10. remove the key; 11. replace the hatch in the initial position; 12. at this point the program has been loaded from the key to the pCO² board.

To download the program follow the same steps described above, selecting position 2 on the key switch. IMPORTANT WARNINGS: all operations involving the key and the relative exchange button must be performed with the machine off. Pay attention to the electrical contacts when handling the key, to avoid dangerous flexing of the terminal strip.


6. SERIAL COMMUNICATION 6.1 SERIAL PRINTER CARD FOR GRAPHIC TERMINAL The printer card is an optional card for all pCO2 graphic terminal models It allows interface with an external printer with the fallowing Characteristics: − graphic printer; − epson compatible; − Printer with RS232 serial interface. Settings of the serial printer port: − baud rate: 19200; − parity: none − stop bits: 1 o 2; − data bits:: 8; − protocol: hardware handshake.

Figure 50: serial printer card for graphic terminal.

The serial printer card must be inserted in the dedicated connector (cfr. Figure 15 on pag. 23).

Figure 51: serial cable for the printer. 6.2 SERIAL PRINTER FOR LCD 4x20 or 6 LED DISPLAY These terminals are already fitted with a 9-pin male connector (connector A) for connecting the printer using a serial printer cable, 9-pin (pCO 2 end ) � 25 pin (printer end). The printer to be connected must have a serial interface RS232.

Settings of the serial printer port: − baud rate: 19200; − parity: none − stop bits: 1 o 2; − data bits:: 8; − protocol: hardware handshake.


Figure 52: rear view of user terminal with serial printer card. 6.3 RS485 SERIAL BOARD FOR SUPERVISOR AND TELEMAINTENANCE

The RS485 is an optional electronic card of pCO² controller which allows you to interface directly the pCO² to a supervisory network RS485. The card ensures the controller optoinsulation to the RS485 serial network.

To connect the RS485 network to a computer it is requested to use a signal converter RS485/RS232. The max. baud rate you can get is of 19200 baud

For the RS485 network connections it is allowed to use twisted 2 pairs and shielded cable AWG20/22

Figure 53: serial RS 485 card.

In table 24 the meaning of the pins in card RS485 is shown:

PIN MEANING 1 GND 2 RX+ / TX+ 3 RX- / TX-

Table 24: pins connection os RS485 card. The connection with the RS485 network is carried out by means of the plug-in terminal connector on the card (cfr. figura 54). If the card is placed in the last position of the supervision serial line, pins 2 and 3, you must connect a 120 W - ¼ W end line resistor (cfr. Figure 54).

Figure 54: esempio di collegamento rete RS485. To install the card in the pCO² unit respect the following instructions: 1. remove the "serial card" placement cover with a screwdriver (cfr. Figura 55).


2. removing the pre-punctured plastic you get the hole which corresponds to the tree-pole terminal out (cfr. Figura 56).

3. insert the optional card into the correspondingconnector, taking care that the card is firmly placed on both plastic supports on the pCO² case (cfr. Figura 57).

4. close the cover making the outside card terminal fits with the punched hole made on the cover (cfr. Figura 57).

Figure 55: removing the "serial card" placement cover

Figure 56: removing the pre-punctured plastic.

Figure 57: insert the optional card into the correspondingconnector. 6.5 RS232 SERIAL CONNECTION CARD FOR MODEM MANAGEMENT The RS232 card is an option for the pCO controller which allows interface using a standard HAYES modem. The only manageable hardware signal is request to send (RTS) in parallel to data terminal ready (DTR). − outputs, "request to send" (RTS) in parallel to "data terminal ready" (DTR); − inputs; "carrier detect" (CD). The connection to the modem is obtained via the male D-connector 9 pins present on the card.

Figure 58: serial RS 232 card.

In table 25 The meaning of the connector pins are the following:


PIN MEANING 1 nc 2 RX 3 TX 4 DTR 5 GND (Frame) 6 nc 7 RTS 8 nc 9 nc

Table 25: pin connection on RS232.

To install the card in the pCO² unit respect the following instructions: 1. remove the "serial card" placement cover with a screwdriver (cfr. Figura 55). 2. removing the pre-punctured plastic you get the hole which corresponds to the tree-pole terminal out

(cfr. Figura 56). 3. insert the optional card into the correspondingconnector, taking care that the card is firmly placed on

both plastic supports on the pCO² case (cfr. Figura 59). 4. close the cover making the outside card terminal fits with the punched hole made on the cover (cfr.

Figura 59).

Figure 59: insert the optional card into the corresponding connector. 6.6 SERIAL CARD FOR LONWORKS® NETWORK 6.6.1 INTRODUCTION The microprocessor pCO2 can be inserted in a LonWorks® network through an optional serial card. The use of these cards implies the knowledge and the use of the tools of installation and maintenance of the LonWorks® network. The card of interface with the LonWorks® network is operational if only programmed. The planning depends on the installed application on the pCO2.

Q�RUGHU�WR�SURJUDP�WKH�FDUG�WKH�XVHU�PXVW�IROORZ�WKHVH�VWHSV: −−−− Individuation of the exchangable variables between the pCO2 and the LonWorks® network according to the

desiderd specifications. −−−− Sending to Tecnair of the variables to exchange. Refering to the variables to exchange Tecnair will send back an

application file to load on the interface card. −−−− Loading of the application in the memory of the card of interface through LonMaker or other tools of installation and maintenance of the LonWorks® network. The standard supply of the interface cards for LonWorks® network foresees at least a planning that allows only the loading of the application and the management of the three non-standard variables: −−−− xif_data allows to read the status of the interface cardsand verify the writing and reading operations occuring. −−−− wr_cmnd allows to obtain information on the status of any interface and to write any variable of the pCO2. −−−− rd_prmt allows to read any information regarding the current status of the pCO2 selected through instruction

wr_cmnd and any following variation. 6.6.2 HARDWARE DESCRIPTION


Two interface card models are available. The two models differ in the way they interface to the LonWorks®:network. −−−− interface with FTT-10A 78 kbs (TP/FT-10); −−−− interface with RS485 39kbs (TP/485-39). According to the model the cards allow the interface with two physical channels TP/FT-10 and TP-RS485-39 described in the literature for the LonWorks®. The card with interface FTT uses a transceiver Echelon® FTT-10, approved to be used on the channel TP/FT-10. This channel is characterized by the following principal characteristic : −−−− Allows for the connection of up to 64 knots on a single network segment. −−−− The knots are connected without any obligation in there mapping: meaning the can be connected in a star ,

ring,on a single bus,or with any mix of these type of figures. −−−− Comunication speed: 78.125 kbps. −−−− Maximum connection distance: 500 m if the connection between knots is of free mapping type; 2700 m if the

connection is bus type with double line termination. For more information we send back to the LonWorks® Free Topology Transceiver User’s Guide.

The RS485 card�s user interfaces use the Echelon® TP/485-39 transceiver whisch satisfies the EIA RS485 specifications with the following characteristics: −−−− The maximum number of knots which can be connected is 32. −−−− The connection of the single knots is made throguth bus terminals. −−−− The transceiver�s comunication speed is of 39 kbps. −−−− Maximum connection distance: 1200 m. For further information we send back to the Electronic Industries Association (1983) document EIA RS-485 Standard and to the official LonWorks® Twister Pair Control Module User’s Guide.

In figure 60 the interface card lanimetry is shown.

1 Connection to the pCO2. 2 Terminal block to the LonWorks® network(GND, A, B). 3 Service pin 4 Service green LED. 5 Anomaly red LED.

Figure 60: serial card for LonWorks® network To activate the service pin it is enough to short-circuit for an instant the two pins with the point of a screwdriver

or similar. The activation of the service pin is reserved only to the phase of installation of the knot. When the pin is activated, the knot sends online to the LonWorks® network a message broadcast containing the necessary information to be identified.

The green LED of service: −−−− Signals the status of the knots like in the LonWorks® protocol:

! Hardware broken: always ON or always OFF. ! Configured knot (normal functioning): ½ second ON, then always OFF. ! Knot NOT configured: blinking at ½ Hz. ! Knot without application program: 1 s ON, 2 s OFF, then always OFF. ! Knot in continuos reset: blinking.

−−−− Remains on during the activation of the service pin. −−−− Remains on for a second in case it receives a WINK command form the network.

The red LED for anomalys signals connection problems betweent he interface card and the pCO2 card. In case of the LED being turned on, verify scrupolosely the the indications described in the following paragraph (in particular verify the correct setting of the communication baud rate of the pCO2 to 4800). 6.6.3 INSTALLATION


The physical connection to the LonWorks® network is obtained through the clamps connector present exctractable from the card and must be performed as from indications and specifications of Echelon®. For further information related to the installation, to the maintenance, to the section and the type of cable it is postponed LonWorks® to the literature. To install the card in the pCO² unit respect the following instructions: 5. remove the "serial card" placement cover with a screwdriver (cfr. Figure 55). 6. removing the pre-punctured plastic you get the hole which corresponds to the tree-pole terminal out

(cfr. Figura 56). 7. insert the optional card into the correspondingconnector, taking care that the card is firmly placed on

both plastic supports on the pCO² case (cfr. Figura 61). 8. close the cover making the outside card terminal fits with the punched hole made on the cover (cfr.

Figura 61).

Figura 61: positionig of the serial card of the LonWorks® network on the pCO2 card. On the pCO2 it is necessary to plan only the baudrate of the serial communication to 4800. The address of the

pCO2 is not remarkable since it is automatically recognized by the interface card. The card must be programed in relationship to the installed application on the pCO2. The program resides in the

memory flash of the Neuron® Chip, the electronic component that manages the protocol of the LonWorks® network, the LonTalk. The planning of such memory can directly happen by the LonWorks® network, using the LonMaker or NodeBuilder® type installation and maintenance systems.

6.6.4 WORKING PRINCIPLES The interface between THE pCO2 and LonWorks® is able to manage up to 62 variable of net. Of these 62 variable: - 59 can directly be associated to as many variable defined in the application pCO2. The utilizzatore will have to specify he desired association, the type of variable and the direction. - 3 are reserved to the management of the same interface. not standards are varying that allow the visibility of all the variable defined in the installed application on the pCO2. When feeding the pCO the interface card is also activated. Once finished the initial reset, the interface card sends online the service message for an eventual supervisor that wanted to intercept it. Subsequently, the interface card begins to question the pCO2 to acquire the address and the values of the variable to send to the LonWorks® network. The whole phase lasts only a few second, in relationship to the number of variables. After having reached the optimal condition, the card produces continuously some interrogations to the pCO2 to know the state and the value of the network variables. Once in optimal condition, whatever external device able to communicate with the card of interface on the LonWorks® network is able: - to read the value of the network variable defined as "output" that the status of the pCO2 they reflect. - to modify the network variable defined as "input". This produces a session of writing from the application towards the pCO2 that copies the internal value of these variable. For a complete management of the interface a network private variable exists, called xif_data, that furnishes information on the status of the same interface and of the installed application on the pCO2. This variable is useful to have a comparison of the operations of writing or reading undertaken. The other two, one denominated rd_prmt and the other wr_cmnd, that the visibility of all the variable allows are defined in the application pCO2. On the LonWorks® network a generic supervisor can send to a specific knot the WINK command. This produces an event to which the application on that knot can respond with any action that the planner decides to undertake. In this specific case the interface card turns on for a second the LED service, making it therefore possible to procede with a verification of the correct operation of the connection between the interface card and the LonWorks® network.


7. HUMIDIFER CONTROL

The immersed electrodes and humidifiers present in the conditioners produced by Tecnair LB work by Joule effect: the water containd in them heats up because of the passage of tide, reaching the evaporation knot and, finally evaporates. The regulation program is able to manage the humidifier knowing the feeding tension, the number of phases and the tide absorbed by the same humidifier. In fact, the tide absorbed by the humidifier is proportional to the production of steam in how much to make to evaporate a liter per hour of water for the necessary 0,725 kWs. Then, measuring the tide absorbed by the humidifier through a amperometric transformer (TAM), the program is able to regulate the production of steam.

This interface (codePCOUMID000) allows the control of the fundamen-tal parameters of the OEM humidi-fiers manufactured by CAREL (level and conductivity of the water in the cylinder, TAM sensor for current absorption) directly from the pCO microprocessor-based electronic control. The values measured by the sensors are converted into signals which can be read by the inputs on the pCO electronic board

Figure 62: humidifier management card.

Analogs inputs B7 and B8 must be selected as 0÷1V in the pCo board the feeding of the pCOUMID card must come from the trasformer of the base pCO card. In tabelle 26 the meaning of the plugs of figure 62 is indicated whilst in Figure 58 the connection scheme between the pCO2 card and the COUMID is shown.

Connectors Reference Description J1 L2 Level sensor J1 L1 Level sensor J2 C2 Condicivity sensor J2 C1 Condicivity sensor J3 T2 TAM sensor J3 T1 TAM sensor J4 O2 digital level output J4 O1 digital level output J5 G0 Round J5 G 24 Vac J6 B7 Analogical output 0-1V: TAM J6 G0 Riferimento analogical output J6 B8 Analogical output 0-1V: Condicivity

Table 26: plug description of card pCOUMID

The position feelers don�t have polarities, therefore they don�t need particolar attentino durino the conenction to the card.

The regulation programs present on the air conditoners produced by Tecnair LB are abale to control humidifiers with steam production from 1 to 42 Kg/h, with single or triphase feeding. For the correct functioning of the humdifiers it is necessari to specify the values, of three parameters: 1. TAM model; 2. Constant value C0; 3. Constant value C1. Tables 19 and 20 give the TAM, C0 and C1 values for humidifiers used by Tecnair LB.


Steam production (Kg/h) Triphase feeding

3 kg/h 5 kg/h 8 kg/h 13 kg/h 23 kg/h 33 kg/h 42 kg/h 220 V 100 100 300 300 500 700 230 V 100 100 300 300 500 700 240 V 100 100 300 300 500 700 380 V 100 100 100 300 300 500 500 400 V 100 100 100 300 300 500 500 415 V 100 100 100 300 300 500 500

Table 27: TAM values

Steam production (Kg/h) Triphase feeding 3 kg/h 5 kg/h 8 kg/h 13 kg/h 23 kg/h 33 kg/h 42 kg/h C0 C1 C0 C1 C0 C1 C0 C1 C0 C1 C0 C1 C0 C1

208 V 94 150 100 150 95 250 103 250 57 500 59 500 220 V 84 150 90 150 84 250 93 250 52 500 53 500 230 V 78 150 83 150 78 250 85 250 48 500 49 500 240 V 72 150 77 150 72 250 79 250 44 500 46 500 380 V 34 150 39 150 34 250 37 250 20 500 22 500 23 150 400 V 31 150 37 150 32 250 34 250 18 500 20 500 21 150 415 V 29 150 35 150 30 250 32 250 17 500 19 500 20 150 440 V 27 150 33 150 28 250 30 250 16 500 17 500 19 150 480 V 25 150 31 150 26 250 27 250 14 500 16 500 18 150 575 V 20 150 26 150 21 250 22 250 11 500 13 500 15 150

Table 28: C0 and C1 values.


8. pCO2 TROUBLESHOOTING 8.1 THE UNIT DOESN’T SWITCH ON (the LED on the main board signalling network presence is off, the LCD is off, other LEDs are off) Check: 1. the presence of mains power; 2. that the output voltage of the power transformer is 24Vac/Vdc; 3. that the 24Vac/Vdc power connector is correctly inserted; 4. that the overload fuse is in tact; 5. that the telephone-type cable connecting the terminal (if present) and the main board is correctly connected. 8.2 ON SWITCHING ON ONE OF THESE SITUATIONS ACCURS � the alarm LED is on; � the LCD is blank or displays random characters; � the buzzer is on. Check: 1. that the is EPROM correctly inserted 2. that the pins of the EPROM were not bent when it was inserted; 3. that the microprocessor chip has not been tampered with: if so, call the service department. 8.3 ERRONEUS READING OF THE INPUTS SIGNAL Check: 1. the calibration of the inputs (from the program); 2. the correct power to the main board and the feelers; 3. that the power to the digital inputs and power to the pCO are separated. A 24Vac/24Vac, 12VA transformer can be used. 4. that the connection to the wires from the feelers is as per the instructions; 5. that the probe cables are located far enough away from possible sources of electromagnetic disturbance (power cables, contactors, high-voltage cables or cables connected to devices with high peak absorption); 6. that there is not a high degree of heat resistance between the sensor and the probe cap (if present). If necessary introduce conductive paste or oil into the caps to ensure good temperature transfer; 7. if there is a probe error or pCO conversion error, the checks to be carried out vary according to the type of probe: Active temperature/humidity feelers with -0.5V÷1V signal: measure, using a voltmeter between terminals Bn and AVSS, the probe signal and check that the voltage corresponds to the temperature/humidity value: 1mVdc corresponds to 0.1°C Example: reading 200mVdc (0.2Vdc), the probe sends a signal which corresponds to 20°C/20%r.H.; using the same logic, 0mVdc corresponds to 0ºC/0% r.H.; # Pressure feelers: if there are errors in reading these feelers, check that: the analogue inputs from these feelers

are set to receive signals of 4÷20mA; # the full scale set by the software corresponds to that of the feelers used.

By measuring the voltage between Bn and AVSS, the current of the probe signal can be easily calculated, considering that the input has an impedance of 50W, applying the formula I=V/R. The pressure value �Ps� sent by the probe can be calculated as follows (FS=Full Scale): Ps = (Vread/50 - 0.004) x (FSmax - FSmin) / 0.016 + Fsmin Example: the probe used has a FSmin=-0.5bar, FSmax=7bar; the voltage read is Vread= 0.5Vdc. The pressure Ps that the probe is measuring is thus: 8.4 EEPROM FAILURE ALARM 1. Contact the service department. 8.5 UNUSUAL ALARM SIGNALFROM THE DIGITAL INPUTS Check: 1. if the alarm signal is present at the input, measure the voltage between the common terminal �C� and digital input terminal which indicates the alarm, �Cn�: � if voltage is present (24Vac or Vdc depending on the power used for the digital inputs) the contact of the connected alarm device is closed; � if the voltage is 0Vac or 0Vdc (see above) the contact is open. If not expressly stated otherwise, the control creates an alarm when it detects open contacts.


8.6 THE PCO CONTINUES TO REPEATEDLY GO INTO WATCH-DOG MODE that is switches off and on again as if there were a temporary power cut, or randomly activates some outputs (digital and/or analogue) Check: 1. that the power cables do not pass near the microprocessors on the main board; 2. that the ratings of the power transformer (not supplied by CAREL) are correct (see paragraph on POWER) 3. that the metal turrets supplied have been used for mounting the main board in the electrical panel. 8.7 THE SERIAL CONNECTION TO THE LOCAL SUPERVISOR DOESN’T WORK Check: 1. the presence and the correct connection of the serial card, code PCOSER0000; 2. that the pCO unit�s identification number has been set correctly (see manual on the application programs); 3. the codes of the serial cables used; 4. that the serial cables have been connected correctly as per the CAREL diagram provided in the documentation on the supervisor network; 5. that the serial cables are not disconnected. 8.8 THE CONNECTION TO THE REMOTE SUPERVISOR DOSEN’T WORK Check: 1. that there is power to the Gateway (if present) and the modems; 2. that the Gateway (if present) has been programmed correctly; 3. that the modem used is compatible with that used by CAREL. 8.9 THE USER TERMINAL IS LOCKED-OUT (does not respond to the pressing of the buttons) Check:

$ that the terminal has not been non disconnected and then reconnected to main board without waiting 2÷3 seconds. In this case turn the pCO off and on again with the terminal connected;

$ that the EPROM has been installed correctly.


9 GENERAL REGULATION CONCEPTS: PARAMETERS DEFINITION Temperature control may be based on a proportional or proportional + integral regulation.

The proportional control works in a proportional way in function of the difference between the required temperature or humidity value (SET-POINT) and the actual value as a percentage of the proportional band.

The P+I regulation is based on the percentage error of the proportional between the required temperature and the measured temperature in relation to the moment in which the difference between the two values persists�.

The humidity control is a proportional control.

SET-POINT is the setted value for temperature and humidity

The PROPORTIONAL RANGE and the relative set point is the interval of temperature/Humidity included among the minimum or maximum limit acceptable of the temperature/humidity, in which the temperature/humidity control of is active. Inside of the proportional range the effect of the regulation is proportional to the removal of the temperature/humidity from the set-point. Then greater is the distance from the set-point greater is the heating or the cooling effect. The width of the proportional range can be set by the user.

- The selected DEAD ZONE corresponds to a half of the total dead zone; the dead zone prefans the control action when the temperature values are near the set-point..

For each step you can select the following: • the set-point of the step itself (% value of the regulation differential) the hysteresis, that is half of the step dimension and a % value of the differential.

Figure 64: step.

A compressor is activated when the temperature is equal to the set-point (of the step) plus the isteresi and it is turned of when the temperature is equal to the set-point (of the step) minus the isteresi. Likewise an electric re-heating resistance is activated when the temperature is equal to the set-point (of the step) minus the isteresi and it is turned of when the temperature is equal to the set-point (of the step) minus the isteresi.

The value of the set-point of the step and the range of the isteresi are express as percentages of the proportional range. Following are some examples of configuration of the present devices as suitable on the conditioner.

.


9.1 UNIT WITH ONE COMPRESSOR − Set-point 24°C proportional band 2°C. − Cold step with set point 50 % and hysteresis 50%. This means that the set point of step is 25 °C and hysteresis

1°C. So the compressor starts at 26 °C and stops at 24°C.

Figure 65: unit with one compressor. 9.2 UNIT WITH TWO COMPRESSORS

− Set-point 24°C proportional band 2°C − First cold step with set point 25 %and hysteresis 25%. Second cold step with set point 75 %and hysteresis 25%.

This means that the fisrt compressor starts at 25 °C and stops at 24°C, the second one starts at 26°C and stops at 25°C.

Figure 66: unit with two compressorsi.


9.3 UNIT WITH CHILLED WATER VALVE

− Set-point 24°C proportional band 2°C − The valve is totally closet at the beginning of band (24°C) and it is totally open at the end of the band (26°C).

Figure 67: unit with chilled water valve. 9.4 UNIT WITH CON FREE COOLING

In case both the water chilled valve and 1 or 2 compressors it is possibile to set the free cooling option. With this optiion the primari device for cooling is the water valve. The compressors intervene only in case the valve�s actions are not sufficient to maintain the set conditions. To use the free cooling option the following relationship must be verified:

Tambiente � Tacqua > set-pointfree cooling+ isteresifree cooling

In figure 74 the functioning diagram of a unti with 1 compressor with free cooling mode is shown. In this case the step has a set 83% and an isteresi 6%.

Figura 68: unit with compressor with free cooling option.


In figure 69 the functionign diagram of a unit with 2 compressors and free cooling option is shown. In this case the compressor has a set of 50% and isteresi of 17%, the second step has a set of 83% and isteresi 17%.

Figura 69: unit with two compressors with free cooling optino.

9.5 AIR CONDITIONER WITH COMPRESSOR REGULATED BY THE INVERTER

It is possible to instal an inverter on a compressor so to regulate in an optimal way the frigorific capacity of the air conditioner. The inverter is controlled by the PCO2 with a 0�10 Vdc signal directly proportional to the set proportional band. In reality the tension exiting the PCO2 varies according by a set minimum normally 4,6 Vdc, and 10 Vdc. This means that if the temperature is at the higher limit of the set table range the signal is 10 Vdc. For temperatures below or equal to the corresponding half of the range the signal is of 4,6 vdc. The inverter is a device capable of variating the feeding tension to the compressor between a minimum (30 Hz) and a maximum (60 Hz) allowed by what arrives to the PCO2: to a tension of 10 vdc correspond 60 Hz and to a tension of 4,6 vdc correspond 30 Hz. In this way the compressors revolution number varies continuously between the minimum and maxium value. This minimum and mazimum number derive from how the compressors manufactrured. In particular the minimum frequency cannot be under 30 Hz so to avoid gripping the compressor itself.

In figure 70 the functionment of a unit with 1 compressor with an inverter is shown

Figure 17: unit with 1 compressor with inverter. Figure 71 shows the functionment of a unit with 2 compressors and 1 inverter.


Figure 71: unit with 2 compressors and 1 inverter 9.6 UNIT WITH ONE HEATER

− Set-point 24°C proportional band 2°C. − Warm step with set point 50 % and hysteresis 50%. This means that the set point of step is 25 °C and

hysteresis 1°C. So the heater starts at 26 °C and stops at 24°C.

Figure 72: unit with one heater. 9.7 UNIT WITH TWO HEATERS

− Set-point 24°C proportional band 2°C First warm step with set point 25 %and hysteresis 25%. Second cold step with set point 75 %and hysteresis

25%. This means that the fisrt heater starts at 25 °C and stops at 24°C, the second one starts at 26°C and stops at 25°C.

Figure 73: unit with two heaters..


La gestione delle resistenze riscaldanti può essere di tipo: − Standard with two electric resistances of equal capacity. The first resistance starts up when the temperature of

the environment goes below 50% of the proportional range in comparison to the set one and the second when the temperature is lower than 100% of the range. For instance if the proportional range is of 2°C and the set one is of 20°C the first stadium will start up when the temperature will be of 19°C and the second resistance when it reaches 18°C.

− Binary with two resistances of l capacity one double the other (this allows to managing 3 stadiums having 2 available). The first resistance, with half power in comparison to the second, starts up when the temperature is inferior to 33% of the proportional range in comparison to the set one. The second resistance starts up when the temperature is inferior to 66% of the proportional range and, simutaneously, the first resistance is disconnected. If the temperature is inferior to 99% of the proportional range the two resistances start up at the same time. For instance, if the proportional range is of 2°C and the set one is of 20°C the first resistance starts up when the temperature is 19,3°C. The second resistance starts up when the temperature is 18,6°C and, simultaneously, the first resistance is disconnected. When the temperature is 18°C both resistances are started up.

− Modulanting: the pCO sends a tension signal 0-10 Vs outgoing towards an electronic regulator PWM. The tension value gone out of the pCO is directly proportional to the planned proportional range. For instance if the proportional range is of 2°C and the set one is of 20°C the outgoing tension value will be equal of 0V if the temperature is of 20°C and it will be equal to 10V if the temperature reaches 18°C.

9.8 UNIT WITH HOT WATER VALVE

− Set-point 24°C proportional band 2°C − The valve is totally closet at the beginning of band (24°C) and it is totally open at the end of the band (22°C).

Figure 74 unit with hot water valve. 9.9 DEUMIDIFICATION BLOCK (series K units only)

If the air conditioner is dehumidifcating and the temperature becomes to cold passing 150% of the proprotinal range the pCO2 (not installed or insufficient reheating devicees) blocks the dehumidifcation. This way the micro gives the priority to the temperature control in spite of the humidity one. The dehumidification can re-start, if needed, when the temperature reaches 50% of the proportional range.

Figure 75: Dehumidifcation block


9.10 HUMIDIFIER CONTROL The pCO is able to check a humidifiers with absorbed modulanting electrodes . In this case it is necessary to plan the desired set-point and the proportional range. For instance with a set-point 50% U.Rs. and proportional range 10% the regulation will be effected among 40%U.R. and 60%U.R.The regulation of the humidity can only be proportional. Then, as soon as the humidity will be inferior to the value of the planned set-point, the pCO2 procedes to activate the humidifier so that it provides the necessary quantity of aqueous vapor to bring the humdity to the desired value. The humidifier has a proportional operation among 30% and the 100% of the maximum production of steam. The pCO, is also able to manage the deumidificazione that has a step behavior,: only when the value of the humidity is equal to the set-point + the proportional range the dehumidification beginse. Then, for the example quoted before, the deumidification is activated when the humidity reaches 60%U.R. The deumidification can be effected through one of these actions:

− Switching on of compressor number 1. − Switching on of compressor number 2. − Switching on of compressor number 1 + Switching on of compressor number 2 − Maximum openng of the water chilled valves − Fan number 2 stop.

The dehumdidifcation is available only if the envronment temperature is included within the alarm limits. For external values to this temperature range the dehumidifaction is available only if included within alram levels. For external values to this temperature range the dehumdification is prohibited (cfr. paragraph 9.2.9, deumidifcation block)

Figure 76: humidifier dehumidification functionment.

The humidifier control for standard air-conditioners pCO manages all types of immersed electrodes humidifiers (to link together with the OEM kit) from 1 to 42 kg/h capacity, three-phase or mono-phase, with a voltage variable from 200 to 660 volts. In order to manage the humidifier it�s used a pCO interface with 8 analogic inputs, and an optional board wich get able the interface to read the TAM signal, the conductivity signal, and full sensor. The pCO by, supply signals and relative humidity, controls the steam production and the work condictions of the humidifier, and it control and manage all the alarms of the humidifier. To select and control the humidifier it is necessary to set the values of the following parameters

NAME DESCRIPTION U.M. RANGE DEF. Nominal Capacity Nominal capacity of the cylinder kg/h 0÷42 3 Voltage Supply voltage V 0÷660 220 Phases number Number of the phases of the electric grid system 1/3 1 TAM model TAM model in use 50÷700 100 Setted capacity Maximum capacity setted kg/h 30%Pn÷100%Pn 3 Humidity set point Set-point per la regolazione di umidità U.R.% 0÷100 U.R.% 50 U.R.%Humidity differential Banda della regolazione di umidità U.R.% 0÷100 U.R.% 10 High humidity threshold Value of the alarm for high humidity U.R.% 0÷100 U.R.% 80 Low humidity threshold Value of the alarm for low humidity U.R.% 0÷100 U.R.% 30 C0 Constant of the algorithm Cfr. table 20 93 C1 Constant of the algorithm Cfr. table 20 70

Table 31: parameters for humidifier control.


The pCO2 does the humidity regulations, and therefore, the ones of the steam production form the humidifier , refering to:

− Seet-point and set humidity range. − Humdiity feelr readings. − Set steam production.

The production of steam by the humidifer varies between 30% of the nominal production set and l 100% of the set production when.

The humidifier is activate dwhen the following conditons are fullfilled:: − the air conditoner is activated by the ON/OFF button or the ON REMOTE. − The functionemnt of the humidifer is turned on.

In the group of masks realtive to the MENU button there is a value indicating the current steam production. Also, in the group of mask relative to the I/O button the humidfaction status is indicated, the tension of the water connected to the humidifier, the tension absorbed by the humidifier.

The microprocessor allows to see the following allarms relative to the humidifer:

ALARM CAUSES RELE’ BUZZER

Current lack alarm The water level reaches the probe and lm < 5%ln Turn off. Empty the cylinder

SI SI

Water lack alarm The load valve has been opened during more than 20 minutes SI SI

Low or high humidity alarm Humidity exceeded the setted thresholds. It is not reported in the first 20 minutes of working. SI SI

Foam presence alarm There is foam inside the cylinder. This situation is managed by the control (Temporarily it is not guaranteed the maximum production).

NO NO

Saturated cylinder alarm The cylinder is full of limestone. It is recommended the cylinder replacement . NO NO

High current alarm Current limits exceeded. Forced discharge during 5 seconds. Turn off SI SI

Table 31: humidifier alarms.

HIGH CURRENT ALARM

To make the current not to exceed the maximum acceptable values some, limits have been fixed. It is allowed to exceed these limits during the starting process.

Imax300%In

0 60 t 20

200%In 250%In

130%In 170%In

High current

Forced discarge

Figure 77: ahigh current alarm.

The forced discharge lasts for five seconds and is not reported. The high current alarm makes the water being discharged for 30 seconds and stops the humidifier.


10. STRUCTURE OF THE MASKS OF THE REGULATION PROGRAM On the display of the user terminal the values are visualized read by the feelers, the parameters of job, the state of the conditioner and, in general, all the necessary information for a complete and precise regulation. If it foresees the clock card, also the time and the date are visible. If an alarm situation appears then the writing �AL� appears in the right superior angle of the display. The visualization of all the parameters, both reading and writing, is organized in special masks. The masks are gathered in trees or in a loop. In figure 71 the structure of the masks is shown. Every mask has the followings characteristic: - It is made up of 4 lines and 20 columns. - In the angle up on the right the identification of the mask is present. Subsequently this angle will be identified with the wording position home. - In the first line it is anticipated the space for the name of the same mask and for the visualization of the time and the date.

It is possible to flow down the masks with the keys arrow su/freccia: The cursor is normally positioned under the identificativo of the mask. If in the same mask there is some modifiable fields

(to es. password, set-point,) the pressure of the key enter ( ) moves the cursor from the home position to the first available field. Using the arrow keys down/up it is possible to modify the field. To memorize the value just inserted it is enough to press the enter key. Following this the cursor automatically moves itself on the following available field. Instead, if in the mask they are no other modifiable fields present, the cursor returns in the home position.

Figura 78: structure of the mask The masks of the regulation program are separated in groups. Every group of masks is accessible pressing a precise key or a combination of keys. To the lighting of the regulator on the display the user terminal is visible for some seconds according to the following mask.

---------------------- | | | PLEASE WAIT | | READING DATA | | | ----------------------

Figura 79: initial mask.


The presence of the mask of figure 85 on the display meanS that the pCO is reading from his own memory the necessary information for the regulation. Once finished the initialization phase, the principal mask of the regulation program disappears and the menu mask appears (cfr. Figure 86) from which it is possible to read the temperature of the environment and the state of the conditioner. At this point it is possible to turn on the conditioner and/or to modify the parameters and/or to read the state of the components of the same conditioner.

---------------------- |# 00:00 06/08/2001| |Temperature: 24,5°C | |Humidity : 50,0RH%| | ** UNIT ON ** | ----------------------

Figura 80: main mask of the regulation program.

10.1 MEANING AND USE OF THE KEYS OF THE USER TERMINAL To access the masks fort the regulation program it is necessary to use the keyboard on the user terminal. For

comfort in figure 87 the keyboard of the pCOT termainl is figured.

Figura 81: User terminal keyboard.

As by figure 81, the keyboard is made up of 15 keys which can be divided in three groups. 1. FIRST GROUP: two keys: one blue and one red which are never used.

2. SECOND GROUP: five rubber keys visible and handling even with closed window

Figura 82: second group of keys.

2.1 ON/OFF KEY It allows the machine turning ON and OFF. Procedure to be followed: - press the On/Off key once. Result of procedure: -the On/Off key turns on : Unit ON. -the On/Off key turns off : Unit OFF.

2.2 ALARM KEY It allows the silencing of the buzzer which has been activated in case of alarm and the resetting of alarms after

the reasons that caused them had disappeared. Procedure to be followed: - press the Alarm key once. Result of procedure: - if, before following this procedure, there are no active alarms (Alarm key OFF, buzzer OFF, no alarm messages

on display), the display will show a mask informing about the absence of any alarms.


The mask will disappear if another key is pressed. - if, before following this procedure, there is at least one active alarm (Alarm key ON, buzzer ON, alarm message

on display), the pressing of the Alarm key silences the buzzer and on display appears the exact message of the alarm which can be the only one or the first of a series. Now you can check if there are more than one active alarms and in that case which kind of alarms has been activated. It is enough to press the Up or the Down keys. In this case if there are more than one active alarms a list of alarm messages will be displayed.

- if, before following this procedure, the buzzer has been silenced and the display shows an alarm mask, you have two possibilities: if the reasons which caused the alarms have disappeared, the Alarm key will turn OFF and the programme will automatically return to the menu mask (this function is called Clear); if the reasons which caused the alarms have not disappeared, the buzzer will be reactivated.

if before following this procedure the buzzer has been silenced and the display shows any masks (except an alarm mask), the programme will automatically enter the alarm branch where you can select the Clear function.

�

2.3 UP/DOWN KEYS They allow to move among the masks which make up the loop. If used after pressing the Enter key, they allow the

selection of the parameter values. (1) If a loop is made up of masks 1, 2, 3, 4 and 5 and mask 1 is on display, by pressing the Up key more than once

the masks will scroll following the order: 1, 2, 3, 4, 5, 1 etc... By pressing the Down key more than once the masks will scroll following the order: 1, 5, 4, 3, 2, 1 etc...

(2) If, with reference to the same example, mask 3 is on display and the Enter key is pressed, the cursor will jump from position 0,0 to the numeric field. By pressing the Up key, the number value will increase; by pressing the Down key the number value will decrease. ---------------------- ---------------------- ---------------------- |1 | |2 | |3 | | Mask1 | | Mask2 | | Mask3 | | | | | | | | | | | | | ---------------------- ---------------------- ----------------------

Figura 83: three mask loop.

In reference to the same example as described above, we suppose that the mask 3 is visualized in which it is possible to plan the set-point of the environement�s temperature. To modify the value of the set-point it is necessary to press the Enter key. This provokes the move of the cursor from the home position to the field of the set-point. To increase or to decrease the value of the set-point it is enough to press the Increase or Decrease key. Pressing once more the Enter key causes the memorization of the new planned value and the return of the cursor in the home position.

---------------------- ---------------------- ---------------------- |3 | |3 | |3 | | Mask3 | | Mask3 | | Mask3 | |Set-point T: 20,0°C | |Set-point T: 20,0°C | |Set-point T: 22,0°C | | | | | | | ---------------------- ---------------------- ----------------------

(a) (b) (c)

Figure 8418: modification of the values of the temperature set-point: (a) Cursor in the home position; (b) Cursor in the position of the set-point following the pressare of the

enter key. Use of the increase/decrease keys to modify the value of the set point.

(c) Cursor in the home position after having pressed the enter key to memorize the new value of the set point.

2.4 ENTER KEY

It allows the parameter setting (through the Up and Down keys) and is used to confirm data after setting. (1) If, for example, the display shows a mask with the message: �Temperature Set-point Setting�, by pressing Enter the cursor will go from 0,0 position to the numeric field where a digit like 020.0 (20 ºC) is displayed. By means of the Up and Down key you can modify the value of this datum. (2) By pressing the Enter key again the cursor will go back to 0,0 and at the same time the modified value will be memorised.


3. THIRD GROUP: nine menu keys, Maintenance, Printing, Input/output, Clock, Set, Prog, Info and Orange Key

(cfr. Figure 91). These keys, if the user terminal is the pCOT model, hence the one which includes the closable tray , disappear once the tray is closed.

Figure 85: third group of keys. They allow the user to perform any kind of procedures starting from the programming to the parameters simple display. Their function is to select the required loop (or chain of masks). The above mentionned 5 rubber keys are used for

programming and for parameters display. Once completed the procedures in a loop, which has been selected by pressing a key, the user only has to press another key to go at once to another mask loop.

The keys share the following peculiar features : -1- A green led next to each key turns on when the key is pressed. The led remains ON as long as the loop of

masks is being used. The led is important if the user does not remember which mask loop has been selected. It is important to point out that only one of the 8 grey keys can be ON, therefore activation of one automatically deactivates the others. Moreover, the user must remember that the leds will never be all OFF, because the mask menu is always on display; therefore, the led next to the menu key is ON even if no procedure is being performed or after a RESET due to a blackout:

-2- In the programme itself there is an automatic function which brings back to display the menu mask and the led next to the menu key will be turned ON again.

If, for example, the last procedure has been the setting of the printer parameters, for some minutes the last selected mask will remain on display and the led next to the printer key will remain ON:

Once the selected time has elapsed, the led next to the printer key will be turned OFF, the one next to the menu key will be turned ON and the temperature and humidity values will be displayed.

-3- Each loop of masks follows an order. This means that by pressing a key the first mask of the corresponding loop will be displayed. If the user then moves to other masks of the loop and by chance presses again the same key, the first mask will be displayed again.


11 UNIT CONFIGURATION: MEANING AND USE OF THE MASKS (manufacturer only)

UNIT CONFIGURATION

This operation is made by Tecnair during the test of the unit and must be repeated by skilled technicians only in case of microprocessor substitution or anyway by Tecnair LB autorized personel. Through the configuration we inform the microprocessor of the components ibnstaleld inside the unit, so that it can handle them and display th eventual alarms.

The information relative to the components installed in the unit (number of compressors, fans, dampers, humidifier dimensions etc) are all retrievable in the units technical specifications (provided with the oreder confirmation) and in the electric diagram provided with the unit.

The unit configuration is protected by a password: 0694

ALL SET VALUES ARE STORED WITHIN A PERMANENT MEMORY TO AVOID THEIR LOSS AT THE LOSS OF FEEDING TO THE UNIT. 11.1 MANUFACTURER LOOP: MASKS FOR THE COMPONENTS CONFIGURATION (H & W)

This loop of masks is accessible after having pressed the Menu and Prog keys simultaneously. This loop of masks allows to set the number and typology of apparatus (compressors, fans, �.) present in the air conditioner.

Pressing once the Menu and Prog keys the corresponding leds switch on and on the display the mask for the password immission is visualised for the access to the constructors programming.

After having inserted the correct constructor password (0694 is the default) it is possible to scroll through the loop of constructor programation masks pressing the increase and decrease keys. The following is the loop of constructor programmation masks.

ia Insert the manufacturer password 0000

Mask to enter into the manufacturer masks branch through password

ib English language room /supply. NTC Humidity 0/1 VAntifreeze NTC

Mask which allows for the setting of the preferred language for the program Mask which allows for the setting of the presence and type of room and supply temperature feeler (NTC or PT1000), room humidity (0-1 V or 4-20 mA), and antifreeze (NTC o PT1000). The feelers present in this mask are installed as standard in the H & W series.

ic external T N NTC external H N 0/1 V defroest.# 1 N NTC

Mask which allows the setting and presence of the external temperature (NTC provided as standard by Tecnair H series ), external humidity (0-1 V provided standard by Tecnair), and the defrost feeler on the 1st compressor (NTC provided only for those units made with heat pump).

Id Limit T. NTC Supply H. N 4/20mADefrost # N NTC

Introduction for the presence of the anti-frost feeler on both compressors.

ie Air delivery S Supply inverter S Y4 exp.inv.dumper S Double fans N

Mask which allows for the selection of the over/underpressure tosupply the control room. Mask which foresees the presence of the inverter on the supply fan, the inverter of the expulsion (only OW series) and the modulating dampaers and also for the presence of a double fan.

if Humidifiers Humidifier #1 NO Humidifier #2 NO Steam NO

Mask which allows for the setting of the presence of one or two humidifiers, or as an alternative of the network steam distributor. The presence of the humidifer escludes automatically the possibility jto select a network steam distributor.


Ig Freecooling NCapacity/pressure Constant

Mask to set the presence of the free cooling functionment Mask which allows to set iif you want to control the pressure or the capacity of the air in the supply ducts.

lh Supervisor N Compressor n°0 Cooling valve N

Mask which allows for the abilitation of the serial transimission of the variables of the functioning of the units. Setting of the number of compressors present (max 2) of the modulating valve on the chilled water coil

li Compressor 1 (DE) Position 000% Hysteresis 000%

Setting of the position and hysteresis of the 1st compressor This mask appears if the presence of a second compressor is set and with the energy saving option disabled.

lj Compressor Compressor 2 (DE) Position 000 %Hysteresys 000 %

Introduction of the position and the hysteresis for the Compressor 2 This mask appears if the presence of a second compressor is set and with the energy saving option disabled.

lk Min.OFF time compressor 180sec Min. ON time compressor 060sec

Introduction of the minimum delay time between de-activation and re-activation of the same compressor, and of the minimum working time

ll Delay start same compressor: 360 sec Delay start different compressor: 600 sec

Introduction of the delay time between de-activation and re-activation of the same compressor to limit the number of starting ups within an hour. Introduction of the delay time between different compressors, if two compressors have been selected.

NOTE The default introductions of the compressor parameters limit to 10 the turning on and off of each compressor for each working hour of the compressor itself.

lm Compressors Enable automatic rotation? NO

Introduction of compressors rotation, if two compressors have been selected. This function foresses that if two compressors are installed the program activates a different compressor. This means that if the function is active the compressor will work like this: 1 2 / 2 1 / 1 2 / 2 1 (underlined number is the 1st compressor to switch on). This function is activable only if 2 compressors are installed and if no frigorific power modulating system is installed.

in Min voltage 00.0 V Max voltage 00.0 V Max time 000 min

Introduction of the minimum feeding tension to the compressor. Introduction of the maximum feeding tension to the compressor. Introduction of the maximum velocity functioning time. Mask which is visualisable only if a compressor on the inverter is installed.

lo Cooling valve Start 000% End 000%

Setting of the minimum and maximum opening of the modulating cold valve (1). These numbers are to be seen as a percentage in relationship to the proportional band (valve totally closed at the set and totally open at the end of the range). This mask appears if the cold modulating valve is present.

lp Hot by-pass By-pass 00,0 � 080,0% Heating valve N

Mask which allows for the settino of the functionemnt parameters for the hot gas by pass. Mask which allows for thre setting of the presence of the hot modulating valve.

iq Heat.valve 3p N Heaters N°0-->STD Delay start 000s

Mask to set the 3 point modulating hot gas. Setting of the delay between the activation of the first and second electric resistence. Mask visible only if the number of electric resistences is 2. Variable delay between 000 and 999 seconds, The default value is 3 seconds.


lr Heating valve Start 000 End 000% Minimum tension 0.0V Max open.post. 0.0V

Setting of the minimum and maximum opening of the hot valve (1). These numbers are to be seen as a percentage in relationship to the proportional band (valve totally closed at the set and totally open at the end of the range). This mask compares if the hot valve is present.

ls Heating valve 3p Start : 000 % End : 100 %

Setting of the minimum and maximum opening of the hot valve These numbers are to be seen as a percentage in relationship to the proportional band (valve totally closed at the set and totally open at the end of the range).

lt Heat.v post 3p NO Heaters N°0-->STD Delay start 000s

Mask which allows for the setting of the post heating modulating valve or of the electric post heating coil. Mask for the setting of the 3 point post heating coil. Setting of the delay between the activation of the first and second electric resistence.Mask visible only if the number of electric resistences is 2. Variable delay between 000 and 999 seconds, The default value is 3 seconds.

Iu Heat.valve post Start : 000 % End : 100 %

Imask to set the opening of the hot modulating gas valve opening range. This mask appears if the three point post-heating valve is present.

lv Heat.valve 3p post Start : 000 % End : 100 %

Imask to set the opening of the hot modulating gas valve opening range. This mask appears if the three point post-heating valve is present.

iw Running time of the valve 3p 180 seconds

Introduction of the running time for the 3p valves to move from a closed position to a completely open position. This mask is visible only if at least 1 3 point valve is present. In case of presence of more valves this value is valuable for all.

lx Neutral zone 00.0°C Neutral zone 00.0ur% Freecooling by temp.

Mask to set the neutral zone for temperature and humidity. Inside this neutral zone the unit do not control the relevant components (compressors, humidifier, valve�) Also allows for the setting of the freecooling in temperature or Enthalpy

lz Freecooling Differential 00.000

Mask which allows for the setting of the differential value for the free cooling functionment. Difference between the temperature of the recirculated air and the temperature of the water entering the coil.

ja Damper Min. opening 000% Offset 00.0 °C Differential 00.0 °C

Mask for the setting of the opening of the re circulation damper on the fresh air for free cooling functionment.

jb Supply air # 1 4mA=o Pa 20 mA=0000Paneutral zone 000 mc/h CPFN=000 (+/-)=00.0 %

Mask to set the configuration of air flow controlling pressostat. The number of pressostats installed (single/double in case a second emergency fan has been installed), the air capacity pressostat functionemnt range, the air supply control dead zone and the type of fan installed (CPFM constant of the Nicotra Plug fan).. The pressostat�s functionment range are 0-1000 Pa for the models 41-51-54-56 and 0-5000 Pa for all other models. The CPFN must be set to 71 for the modells 41-51-54-56; 119 and models from 72 to 152; 197. For all other models in case of doubt please contact TECNAIR LB�s assistenace service. In case in mask IB the constant pressure control has been selected then the values to be set are relative to the control fo the pressure in the duct which has a range of 200-1000 Pa. And a relative dead zone so to avoid continuos pendolation of the fan.


jc Room pressure 4 mA -50.0 Pa20 mA +50.0 PaInverter (+/-) 10.0 %

Mask to configure the room pressostat and the variation step of the inverter to control the room pressure. It�s working range (4-20 mA) and the expulsion percentage of the exiting signal twords the inverter in case of different value measured by the room feeler sent to the microprocessor.

jd Contemporary defrost enabled ? NO

Mask which allows for the contemporary abilitation of the compressor defrost. Mask which can be seen only in heat pump units.

je Setpoint defrost Start 00.0°C End 00.0°C

Mask for the setting of the compressor defrost set point. Mask which can be seen only if unit is configured with heat pump units. (anti freeze on compressor 1)

jf Defrost Delay 000min Maximum time 000min

Mask for the setting of the defrost timings. Mask which can be seen only if unit is configured with heat pump units. (anti freeze on compressor 2)

Jg Maximum time hot gas 000 sec

Introduction of the maximum functionment time for post heating hot gas for dehumidification.

ji Dehumidification Compressor 1 N Compressor 2 N Max by pass 4.0 V

Setting of the apparatus to be used for de-humidification. In case no component is selected the dehumidification does not take place.

jj Dehumidification Cooling valve N Activation limit N Priority N

Setting of the component with which to do the dehumidification. Allows for the low temperature limit in refernce to the dehumidification function and allows for the selection of the priority of the dehumidification instead of the temperature.

jk Humidifier #1 Production 00 Kg/hTAM model 50 Phases number 1

Mask for the Introduction of the nominal power for the humidifiers 1 steam production Introduction of the TAM model Introduction of the number of phases for the feeling tension. For the setting of these parameters refer to chapter 7 of this manual.

jl Humidifier #2 Production 00 Kg/hTAM model 50 Phases number 1

Introduction of the nominal production of the humidifiers 2 steam production Introduction of the TAM model Introduction of the number of phases for the feeling tension.

jm Volt 000VDrain without voltage N

Mask to set the humidifier electric tension. Mask to allow the possibility to drain the humidiifer cylinder if there isn�t voltage. In case of presence of two humidifiers the set values are valid for both.

Jn Humidifier has drain with electrodes without voltage? N

Abilitation to the discharge from the cylinder in presence of tension to the electrodes of the humidifier.

Jo Humidifier #1 C0: 0093 C1: 0075

Constants for the control by the software of the humidifier 1. For the setting of these parameters refer to chapter 7 of this manual.


Jp Humidifier #2 C0: 0093 C1: 0075

Constants for the control by the software of the humidifier 2. For the setting of these parameters refer to chapter 7 of this manual.

Jq Temperature Set point limit Minimum 00.0 °CMaximum 00.0 °C

Mask to set the limit for temperature set point.

Jr Humidity Set point limit Minimum 00 % URMaximum 00 % UR

Mask to set the limit for digital exit which controls the humidity set point. The settable values are the minimum and maximum ones selectable by the user under the loop SET.

Js Room pressure Set point limit Minimum 00 Pa Maximum 00 Pa

Mask to set the limit for room pressure set point Three variables are are settable: hot stop (stops the hot component), Cold start (starts at the same time the cold component to correct the T without stopping anything): only signals the alarm.

jt Limit temp. Management LO temp. with stop cold Delay alarm 000sec

Mask which allows for the setting of the low temperature supply alarm mode. Three options are available: Cold stop (shuts of the cold device); Hot on (switchs on at the same time even the hot device so to correct the T); only alarm signal

ju Limit temp. Management HI temp. with stop hot Delay alarm 000sec

Mask which allows for the setting of the high temperature supply alarm mode. Three options are available: Cold stop (shuts of the cold device); Hot on (switchs on at the same time even the hot device so to correct the T); only alarm signal

jw Limit temp. Thresh. 15,0 - 01.0°C by minimum open heating valve 0.00%

Jy ON/OFF remote NO Printer NO

This mask allows the possibility to enable the remote on/off and the serial printer card.

jw Baud rate 1200 Identification serial number 0000 Protocollo RS485

Mask to set the serial communication speed if the communication protocol is active. Protocol selectable between the MODBUS and the CAREL one.

ka Delay LP 000sec Delay start 000sec Delay high/low 000sec Delay status 000sec

Mask to configure the delay for LP alarm. Mask to configure the delay for all the alarm during the start uun of the unit. Mask to configure the delay for high/low room temperature. Mask to configure the delay for status alarm.

kb Delay for automatic return to menu 000sec

Mask to set the delay for automatic return to the main menu of the software showing room and humidity temperature.


kc installation of Default values? YES

Mask to reset the micropressor memory in order to restart the configuration. . By activating this voice the unit is brought back to the settings for a standard model OHA 51. It becomes therefore necessary to set the unit back to it�s correct configuration. This function is to erase the micorprocsessors memeory and allow a clenaning of the micro�s memory in case of block. To execue the configuration it is necessary to enter the constructor loop (see thie manual chapter 11.1) and set all the components (compressor, valves etc) . These informations are retrievable from both the order confirmation and the lectrical diagram.

kd Insert new manufacturer password 000

Masks for the password modifications. The default password remains anyway valid


12. PROGRAMMING AND CONTROL OF THE UNIT’S FUNCTIONMENT: (H & W series)

The regulation program is made by he User through the keyboard and gives to the microprocessor the operating parameters: set points, alarm thresholds a.s.o.

The regulating program can handle: − Fans. − Compressors. − Elettric heating resistences. − Modulanting proportional valves: valves controlled by the pCO2 with a 0�10 Vdc signal directly proportioned to

the set range. This means that if the temperature is at the upper limit of the range the signal coming out of the pCO is of 10 Vdc. Instead, if the temperature is equal to the set-point the outgoing la tensione from the pCO is of 0 Vdc.

− Three point (Throatling) valves: water valves commanded by the pCO2 with a signal for opening and one for closing. These valves have an opening time, that represents the necessary time to pass from the position of complete closing to that of complete opening. Sending the signal of opening or closing for a determined time, it is possible to open or closing (partially) the valve. In this case it is not possible to precisely aknolwledge the position of the valve. The valves, Throatling or to three points, they are completely closed to the beginning of the proportional gang, that is in proximity of the set-point, and completely open at the end of the gang. Every time that a valve to three points, must be activate, the program sends a command of closing to line up the position of the same valve before beginning the regulation. This operation is not necessary for the valve modulante in how much in absence of tension it automatically brings him in the position of closing. The point valves are therefore not installed, and not recommended by Tecnair LB in case of treatment of total or partial, fresh air, since there reaction time is very long.

− Inverter: A device that allows the variation of the feeding frequency of the devices connected to it. In the conditioners of the H series produced by Tecnair this is employed for modulating the power of the compressor to draw nearer the temperature to the planned set-point (only for heat pump units) and to check the supply and expulsion fan. The inverter is commanded by the pCO2 with a 0-10 Vdcs signal.

− Hot gas injection: to regulate the cooling capacity in relation to the room temperature. Regulation with hot gas injection, possibly assisted by the electronic expansion valve for a perfect control of capacity, is controlled by the PCO2 with a 10 � 100 v.

− Modulaning humidifier: device for the production of humidity.

All the formulations can be effected on units on board terminal or on the one installed in the environment (accessory), since the two terminals are equivalent entirely.

The climatization software for the surgical rooms offers the possibility to be able to plan up to 10 regulation

programs, easily modifiable by the user. Besides, a program exists for maintaining the unity in night stand-by is a program to do the sterilization of the surgical room. These programs are retrievable from the programming procedure describe din this chapter.

12.1 LOOP MENU: READING OF VALUES SIGNALLED BY THE FEELERS (H & W series)

You accesses this loop of masks after having pressed the Menu key. In this loop of masks the values are visualized and read by the existing feelers. To this intention we remember that the temperature/humidity feeler for the environment , external and anti freeze temperature, this is the only feeler to be always present.

Pressing once the key Menu ignites the corresponding led and on the display the mask that points out: - the value of the temperature environment; is visualized.

- the value of the damp environment (the indication of damp is different only from zero if the probe of damp is

present);

- the time and the actual date;

- the state of the unit (ON-OFF).

By Pressing the keys Increase and Decrease it is possible to flow through the loop of masks of menu. Following this the loop of the masks of menù is brought

12:14 08/07/2001

Temperature 20.0ßC º Humidity 50.0ur%º

* UNIT OFF *

It displays the time and date It displays the values of temperature and humidity of the ambiance. It displays the units status


Supply air 00.0º Supply humid. 00.0%º Ext.air 00.0ßC º Ext.humid. 00.0ur%º

Supply air temperature/humidity value Fresh air/humidity temperature values

Antifreeze 00.0ßC Room press. 000.0PA Air deliv. 00000mc/h

Value of the anti-frost temperature Value of over/under pressure of the room in relationship to the reference environment. Standard for units of series H and W. Supply air flow value Standard for units of series H and W.

Defrost 1 0,00°C Defrost 2 0,00°C

It displays the values of defrost #1 It displays the values of defrost #1 Mask visualised only for heat pump units.

Steam prod. #1 00.0 Kg/h Steam prod. #2 00.0 Kg/h

Steam production during humidification request

Enthalpy Set point 00.000kc/kj Ent.int. 00.000kc/kj Ent.ext. 00.000kc/kj

Warning: mask not used; it is provided but is not active as the enthalpic free cooling functioning is not provided

Air flow not obtained

Pressure not obtained It displays the optimal/non-optimal air flow/pressure with regard to the sets required (tolerance +/- 10%)

12.2 MANTAINANCE LOOP: COMPONENTS WORKING HOURS (H & W SERIES).

You access this loop of masks after having pressed the MANTAINANCE key.. In this loop of masks the functioning hours are visualised for the main components of the air conditioner (fans, compressors�.)

Pressing once the maintenance key the relative leds switch on and the masks indicating the functionment hours of the fans and compressors is visualised.

Pressing the increase and decrease keys it is possible to scroll throguh the mantainance mask loop. The following is the mantainance mask loop.

ba Time counter Unit 00000 Compressor 1 00000 Compressor 2 00000

It display the functioning hours of the unit (by referring to the main fan) and of the compressor(s).

bb Time counter Heat. post. 1 00000 Heat. post. 2 00000

Functioning hours of the electric post heaters # 1 (if present) Functioning hours of the electric post heaters # 2 (if present)

bc Time counter Humid.#1 00000 Humid.#2 00000

Functioning hours of the humidifier # 1 (if present) Functioning hours of the humidifier # 2 (if present)

bd Time counter Heater.#1 00000 Heater.#2 00000

Functioning hours of the electric heaters # 1(if present) Functioning hours of the electric heaters # 1(if present)

be Insert.counter. Compressor 1 00000 Compressor 2 00000 Reset #1No #2No

Number of compressors # 1starting ups (if present) Number of compressors # 2 starting ups (if present) How to reset: the enter key will move the cursor; the arrow will change the parameter into “yes” (after a few seconds, it will automatically go back to �no�).


bf Unit Working hours 00000 Threshold 00000 Reset No

Functioning hours of the unit Threshold for indicative alarm How to reset: the enter key will move the cursor; the arrow will change the parameter into “yes” (after a few seconds, it will automatically go back to �no�).

bg Compressor 1 Working hours 00000 Threshold 00000 Reset No

Functioning hours compressor #1 (if present) Threshold for indicative alarm How to reset: the enter key will move the cursor; the arrow will change the parameter into “yes” (after a few seconds, it will automatically go back to �no�).

bh Compressor 2 Working hours 00000 Threshold 00000 Reset No


bi Humidifier 1 Working hours 00000 Threshold 00000 Reset No

Functioning hours humidifier #1(if present) Threshold for indicative alarm How to reset: the enter key will move the cursor; the arrow will change the parameter into “yes” (after a few seconds, it will automatically go back to �no�).

bJ Humidifier 2 Working hours 00000 Threshold 00000 Reset No

Functioning hours humidifier #2 (if present) Threshold for indicative alarm How to reset: the enter key will move the cursor; the arrow will change the parameter into “yes” (after a few seconds, it will automatically go back to �no�).

bk Heater 1 Working hours 00000 Threshold 00000 Reset No

Functioning hours heater #1 (if present) Threshold for indicative alarm How to reset: the enter key will move the cursor; the arrow will change the parameter into “yes” (after a few seconds, it will automatically go back to �no�).

bl Heater 2 Working hours 00000 Threshold 00000 Reset No


bm Heater post 1 Working hours 00000 Threshold 00000 Reset No

Functioning hours post heater #1 (if present) Threshold for indicative alarm How to reset: the enter key will move the cursor; the arrow will change the parameter into “yes” (after a few seconds, it will automatically go back to �no�).

bn Heater post2 Working hours 00000 Threshold 00000 Reset No

Functioning hours post heater #2 (if present) Threshold for indicative alarm How to reset: the enter key will move the cursor; the arrow will change the parameter into “yes” (after a few seconds, it will automatically go back to �no�).

Bo Sterilization cycle Disabilitated Damper 099%

Mask which allows for the abilitation of the sterilization cycle. This mask is active only for untis of the H series provided with air recirculation motorised damper.

Bp Cleaning cycle Cycle #1 01 hours Cleaning 01 hours

Mask which allows for the settino and abilitation of the cleanign cycle.


NOTE To reset the hours of operation of the components, It is necessary to press ENTER up to bring the cursor under the writing N. So to perform the reset it is necessary to press the increase or decrease key up to when the writing Y appears. At this point release the key and wait for the writing N to appears. Planning 0000 as threshold value for the times of operation the operation alarm will never be had.

12.3 PRINTER LOOP: SETTING OF THE OPERATION (H & W SERIES) You access this loop of masks after having pressed the Printing key. In this loop of masks it is possible to establish the key pressure parameters. Pressing once the Printing key ignites the corresponding led and on the display the mask is visualized for the selection of the immediate pressure. By pressing the increase and decrease keys it is possible to flow through the printing loop of the masks. Following this the loop of the masks of menu is brought up

Ca PRINTER BM Immediate print enabled

To make an immediate printing of the feelers� and other present alarms� reading. They can work only if the clock board is present.

cb PRINTER Cycle print enable

Mask for the cyclical printing of the feelers� and alarms� reading

cc PRINTER Print cycle time: 000 minutes

Mask connected with the previous one through the introduction of the time interval required for the cyclical printing

12.4 I/O LOOP: INPUT/OUTPUT: COMPONENT STATUS (H & W SERIES)

You access this loop of masks after having pressed the Input/Output key. In this loop of masks it is possible to visualize the state of the principal components of the conditioners.

Pressing once the Input/output key ignites the corresponding led and on the display the mask that points out the state of all the entries and digital exits is visualized.

By pressing the Increase and Decrease key it is possible to flow the loop of the masks of control of the entries and the exits. Following the loop of the input/output masks is brought.

If a component is active the writing ON appears, otherwise the writing OFF appears.

da Digitals input C=Close O=open 01:CCCCCCCCCCCCCC 15:CCCCCCCCCCCCC

It displays the digital inputs mode. C= closed (running); A= open (not running)

Db Circulator OBM Damper Off Supply fan Off Expulsion fan Off

Recovery System, if present External/outlet/recovery/expulsion air Outlet fan status Expulsion fan status

Db Supply fan 1 OFF Supply fan 2 OFF

Supply fan 1 status Supply fan 2 status

dc Unit status OFF Filter clogged OFF Alarms OFF Serious alarms OFF

Unit mode Clogged filter alarm Minor alarm does not stop the unit Serious alarm stops the unit


dd Humidifier #1 OFF Fill OFF Drain OFF

Humidifier #1 mode Humidifier fill valve�s mode Humidifier drain valve�s mode

de Humidifier #2 OFF Fill OFF Drain OFF

Humidifier #2 mode Humidifier fill valve�s mode Humidifier drain valve�s mode

df Compressor 1 OFF Compressor 2 OFF

Compressor 1 mode Compressor 2 mode

dg Cycle elettr 1 OFF Cycle elettr 2 OFF

Status of the Inverter cycle valve 1 Status of the inverter cycle valve 2 Mask visualised only for heat pump units.

Dh Heat. gas 0 Heat valve.1 OFF C Heat valve.1 OFF O Valve post OFF C Valve post OFF

State of the opening command of the valve for heating/state of resist. 1 State of the closure command of the valve for heating/state of resist. 2 State of the opening of the command valve for post-heating/state of resist. 1 State of the closure of the command valve for post-heating/state of resist. 2

di Damper 000% Cooling valve 000% Inverter.comp.1 000%

% of re-circulating damper ( % of cool modulating valve�s opening (if present) % of comp.1 inverter (if present) or of the hot gas injection valve with a 10-100 vdc signal

dj Inv.supply fan 000% Inv.exaust fan 000%

% of the supply fan inverter % of the expulsion fan inverter

dk Hot valve 000%Steam valve 000%

% of hot valve opening (if present) % of steam valve opening (if present)

dl Humidifier # 1 Cylinder worm out No Mode ---------- Status ----------

Information on the humidifier # 1 Exhausted cylinder (full of limestone) Status

dm Humidifier # 1 Level: open Conduct.: 00000uS/cm

Information on the humidifier #1 Level contact open or closed Measured value of water conductibility

dn Humidifier # 1 Measured 000.000A Target 000.000A Nominal 000.000A

Information on the humidifier #1 Value of measured current Maximum value of acceptable current Value of nominal current

do Humidifier #2 Cylinder worm out No Mode ---------- Status ----------

Information on the humidifier # 2 Exhausted cylinder (full of limestone) Status

dp Humidifier # 2 Level: open Conduc.: 00000uS/cm

Information on the humidifier #2 Level contact open or closed Measured value of water conductibility


dq Humidifier # 2 Measured 000.000A Target 000.000A Nominal 000.000A

Information on the humidifier #2 Value of measured current Maximum value of acceptable current Value of nominal current

12.5 LOOP CLOCK: SETTING OF THE OPERATION (H & W series) You access this loop of masks after having pressed the Clock key. In this loop of masks it is possible to visualize and to plan the current time and the current date.

Pressing once the key clock ignites the corresponding led and on the display the mask is visualized for the visualization of the date and the current time.

By pressing the Increase and Decrease key it is possible to flow through the loop of the masks related to the clock. What follows is the loop of the masks of the clock.

ea Clock Date 00/00/00 Hour 00:00

Mask reading date and time.

eb Clock set gg/mm/aa 00/00/00 hh:mm 00:00

Mask for date and time introduction

12.6 LOOP SET: SET POINTS REGULATION (H & W Series) You access this loop of masks after having pressed the set key. In this loop of masks it is possible to plan the

set-point for the regulation of the temperature and humidity in the environment, brought air, over/under pressure in the environment,

Pressing once the set key Set ignites the corresponding led and on the display the mask is visualized for the formulation of the set-point of temperature.

By pressing the increase and decrease keys it is possible to flow through the loops of the set masks.

Following this the loop of the set masks is brought up. The following two loops of masks are suitable: the first one is valid when the conditioner is working in the sand-by mode, the other one is valid when one of the 10 selectable programs has been chosen.

12.6.1 SET KEY OF THE AIR CONDITONER IN NORMAL FUNCTIONMENT FOR H AND _W SERIES

fa Set Point -- Temp. 23.0 °C

Mask for introduction the set temperature for the program with which the air conditioner is working (cfr programming branch 12.7)

Fb Room pressure 020.pa Damper 100%

Mask to set the room pressure and the recirculation damper during the stand by (value wuhich can be set only in presence of recirculation damper). The air flow of the unit during the stand-by must be 1/3 of the nominal et not under 1500 mc/h to dilute the anhestetical gas.

(1) Positive pressure means that the controlled room is in overpressure in respect

to the reference environment. Negative pressure means that the room is in under pressure in respect to the reference environment.

fb Humidifier - Humidity 55.0 ur%

Mask to set the humidity set-point .

ff Humidifier -- Manual drain: NO (120 sec of timeout)

Mask for manual activation of the solenoid valve for water unloading of the humidifier (useful in case of substitution of the cylinder).


12.6.2 OF THE AIR CONDITIONER IN STAND-BY MODE (H & W SERIES)

fa Set Point --stand by Temp.MIN 15.0 °C Temp.MAX 29.0 °C

Mask to set the minimum and maximum room air temperature the unit has to control during the stand-by function

fb Air flow 1500mc/h Room pressure 020 Pa Damper 100 %

Mask to set the air flow, the room pressure and the recirculation damper during the stand by. The air flow of the unit during the stand-by must be 1/3 of the nominal et not under 1500 mc/h to dilute the gas.

(1) Positive pressure means that the controlled room is in overpressure in respect

to the reference environment. Negative pressure means that the room is in under pressure in respect to the reference environment.

fc Stand by -- Humid. Min. 30 % Humid. max. 70 % Production 03 kg/h

Mask to assign the interval of humidity that the conditioner has to maintain during the operations in stand-by. Introductions for steam production.

fe Humidifier #1 Manual drain NO (120 sec of timeout)

Mask for manual activation of the solenoid valve for the water unloading of the humidifier (useful in case of substitution of the cylinder).

12.7 LOOP PROGRAMMATION; OPERATION PROGRAM SETTING (H & W SERIES) You access this loop of masks after having pressed the Prog key. This loop of masks allows the user to personalize the regulation in upon his own demands. Pressing once the Prog key ignites the corresponding led and on the display the mask for the choice of one of the ten previously set programs is or for the choice of the operation in stand-by.

ga Progr.stand-by enable Si ON 16:00 OFF 06:00 Program N°>01<

Mask to recall the stand-by program or to make the unit work with one of the 10 programs pre installed (1-10).

Introduction the program in stand-by it is necessary to plan the interval of time in which the conditioner has to work with the conditions planned for in stand-by operation (brought redoubt, greater tolerance for temperature and humidity). In the case above described the conditioner has been working later in stand-by every day from 16:00 to 06:00, moment in which the conditioner takes back the normal operations. In case of emergency it is possible to manually disarm the operation in stand-by.

This operation is done by setting NO in the previously described mask. As an alternative an external command forecasted by TECNAIR LB can be installed for the activation of this function.

In case the the stand by from a remote position the unit will contiue working with reduced capacity up to a new command.

If the unit is placed in stand by from remote it is not possible to reset the unit to normal functionment from it�s terminal location.

Pressing once the down key arrow a mask appears for the insertion of the password for the access to the user planning masks. After having inserted the correct password for the user (0123 is the default) it is possible to flow the loop of the user planning masks by pressing the increase and decrease keys. The following is the loop of the masks for the user planning..

gb Insert the user password 0000

This function is to allow introducing the user password

gc Select the program N 01

This function is to recall the programme (1-10) of which you want to change the parameters.

gd Program #01 SETPOINT Temperature 20.0°C Humidity 55.0UR%

It is valid for all 10 programmes (the one in question is shown up on the right) and changes the set point values of ambient temperature and humidity


ge program #01 Air flow 1500mc/h Room pressure 020 Pa External air 100 %

It is valid for all 10 programmes (the one in question is shown up on the right) and varies the set point values of air capacity, ambience overpress./depres. and external air % in case of re-circulating air-locks presence.

gf Save the dates in program N°>01<

Its function is to record the values of a certain programme ex.>01<.

Gg Are you sure to save dates in program N°01? YES/NO

Safety mask to record the changed values of a certain programme ex.01

gh Type Prop+ Int Integr. Tinme Band temp.: 03.0°C

Mask (valid for all programmes) to modify the value of the proportional band (see the meaning in the relevant paragraph) � determination of the type of regulation (propor. or propor.+ integr.)- integration time introduction.

gi Alarm's offset High Temp.: 05.0 °C Low Temp.: 05.0 °C

Mask to determinate of the alarm thresholds for low and high room temperature. Thresholds are connected with the temperature set point (ex. By introduction 5°C for high and 5°C for low temperature, with a 20°C introduction, the high temperature alarm will occur at 25°C, while the low temperature alarm will occur at 15°C).

gj Hot/Cold AUTO Neutral zone 01,0°COff compressors SI Delay 060 sec

Introduction of the passage type with automatic hot/cold functionment or external. This is a valid introduction for heat pumps. Neutral zone introduction Compressor swith of introduction if the external temperature is two low and slow down of switching of.

gk Circulator Delta

. Setting of the temperature difference between fresh and suction air of the room for the activation of the circulator for heat recovery (Heat Recovery units only; HR)

gl Antifreeze Threshold 00.0°C Differ. #1 00.0°C Differ. #2 00.0°C

Formulation of the threshold of the external air temperature for the opening of the warm water valve or activation of the heating resistances used to avoid that the batteries for cooling freeze. The first differential points out of the value for the total activation of the warm water (it is activated to threshold-differ. #1). The differential second establishes the temperature to which to stop the sending fan and of expulsion (block to threshold-differ.#2). The two fans are reactivated when the temperature is equal to limit+differ. #1

gm Set point Air flow 4300mc/hExternal air 100%

Introduction if the air capacity set point and percentage of external air in case of the presence of a motorized recirculation camper. These values refer to the normal functionment of the air conditioner.

gm Stand-by Air flow 4300mc/hExternal air 100%

Introduction if the air capacity set point and percentage of external air in case of the presence of a motorized recirculation camper. These values refer to the standby mode functionment of the air conditioner.

gn Steam production Prod #1 Kg/h Prod #2 Kg/h

Introduction of the quantity of network steam production in case of presence of a steam network distributor

go Humidification Band humid 00.00 UR% Low humidity 00.00 UR% High humidity 00.00 UR%

Introduction of the humidity range and relative alarms of high and low humidity


gp umi-cooling

Use humidification plus cooling ? ?

Mask which allows the abilitation to the symulatneous use of the functions of humiditifcation and chilling.

Gq ID user

0000000000 History enabled SI/NO

Unit serial number introduction (useful to program an ordinary or extraordinary maintenance)

gr Room temp. 0.0°C Supply. 0.0°C Humidity. 0.0ur% Ext.humidity 0.0ur%

Mask to calibrate feelers for room temp. / supply temp. / ambience humid. /ext.humid. In case of feelers out of calibration (sample)

gs Antifreeze 0,0°C Ext.temp. 0.0°C Air flow 00000 mc/h

Mask to calibrate feelers for antifreeze / external temp. / air flow in case of feelers out of calibration (sample)

gt Room press 0,0 Pa Defrost.1 0,0βC Defrost 2 0,0βC

Mask to calibrate feelers for room pressure. / defrost temp. In case of feelers out of calibration (sample)

ga Insert the new user password 0000

Mask to insert the new user password Note: the original password will still be valid .

12.8 LOOP INFO: RELEASE OF THE REGULATION PROGRAM (H & W SERIES)

This mask is accessed after having pressed Info key. This mask contains information on the regulation software version.

Pressing once the info key the corresponding led on the display switches on and visualises the information mask on the regulation program.

ga Progr.stand-by enable Si ON 16:00 OFF 06:00Program N°>01<

Short software description. Identification of the air conditioner inserted by the user in the programming phase. Software version and validation date

12.9 LOOP MANUAL CONTROL: MANUAL ACTIVATION OF THE COMPONENTS (H & W SERIES) You access this loop of masks after having pressed the Menu and Set keys simultaneously. This mask loop

allows to manually activate the devices present within the unit.

Pressing the menu and set keys once the corresponding leds light on and on the display the mask for the abilitation of the manual control of the devices within the air conditioner is visualized. The following is the loop of masks for manual control.

The protections for the safeguard of the security and integrity of the components of the air conditioner are maintained even during the air conditioners manual control.

Abilitation of the manual control doesn’t mean manual activation of the unit, but simply manual activation of the components present within the unit. This operation can be executed only with the unit switched off.

na manual management enable? NO

Abilitation for the manual control of the air conditioners components. It is unnecessary to remember that only the components who�s presence has been set by the constructor can be activated.

nb Compressor 1 N Compressor 2 N

Manual activation compressor 1 Manual activation compressor 2


nc Electric hetaer 1 N Electric heater 2 N Heater post 1 N Heater post 2 N

Manual activation first state of electric heating battery Manual activation second state of electric heating battery Manual activation first state of electric post heating battery Manual activation secondt state of post electric heating battery

nd hetat valve 3P O N Heat valve 3P C N Valv.3P post O N Valv.3P post C N

Manual activation three point hot valve opening Manual activation three point hot valve closure Manual activation three point post hot valve opening Manual activation three point post hot valve closure

NOTE Remember to disable the manual control when exiting this loop of masks, otherwise the air conditioner wont be able to work. 12.10 LOOP SELF TEST: ACTIVATION (H & W SERIES)

The access to this loop of masks is done by pressing the Menu and Clock keys simultaneously. This loop of masks allows to set the number and typologies of the devices (compressors, fans,�) present in the air conditioner.

Pressing once the Menu and Prog keys the corresponding leds switch on and on the display the mask for entering the password and for the access to self tests is visualized.

After having entered the correct password (4321 is the default) it is possible to self test, this means activate all the digital exits of the PCO2. The following is the loop of self test masks.

oa enter password Self test 0000

Mask for entering the self test password (4321).

ob Self test DISABLED

Abilitation/disabled of self test.

NOTE Until when the self test is activated, it is not possible to change mask. 12.11 LOOP SUPERVISION: ACTIVATION OF THE PROGRAM (H & W SERIES)

It is possible to scroll through the previously described masks of all the cards connected by a unique shared terminal (therefore with local network address 1 or 15) previously set as shared terminal between the cards.

To visualize the masks of the cards connected in pLAN on the terminal it is sufficient to press in sequence the orange key. For example, in case of a pLAN network of three units, pressing the orange key of the shared terminal it is possible to scroll the mask of each card with this sequence: − No pressure on the orange key mask card 1; − First pressing of the orange key: mask card 2; − second pressing of the orange key: mask card 3; − third pressing of the orange key: mask card 1; − Fourth pressing of the orange key: mask card 2.

To understand which card is controlling in a precise moment the shared terminal it is sufficient to check the menu mask. Beside the # symbol the number of the unit�s controlling card is indicated (cfr Figure 79). ---------------------- ---------------------- ---------------------- |#1 00:00 06/08/2001| |#2 00:00 06/08/2001| |#3 00:00 06/08/2001| |Temperature: 24,5°C | |Temperature: 24,5°C | |Temperature: 24,5°C | |Humidity : 50,0RH%| |Humidity : 50,0RH%| |Humidity : 50,0RH%| | ** UNIT OFF ** | | ** UNIT ON ** | | ** UNIT ON ** | ---------------------- ---------------------- ---------------------- (a) (b) (c)

Figure 89: menu mask of the cards 1 (a), 2 (b) e 3 (c) connected in pLAN network. The first unit is in stand by and the other two are active.


13 ALARM MASKS (H & W SERIES)

Each alarm situation is signaled by: - Activation of the buzzer incorporated in the user terminal; - Lightening of the red led on the front of the user terminal; - Visualization of the words "AL" on the right hand side angle of the display.

Each alarm mask is identified with a code of two characters situated in the higher left hand side angle of the display, so to ease the recognition of the mask itself.

Pressing the alarm key the buzzer sound is silenced the message corresponding to the last activated alarm s visualised. With the increase and decrease keys it is possible to scroll through all the alarm signals memorized. Pressing once more the alarm key the memorized alarm signals are cancelled only after having eliminated the alarm�s cause. All alarms are manually reset.

If the alarm signals are cancelled without having removed the alarm causes, the alarm signal will immediately reactivate itself.

All alarms are delayed by one minute at the activation of the unit, with the exception of the high/low temperature and humidity alarms and also the broken feeler alarm are delayed by the user for a settable time.

XA Compressor 1 functioning hours

Alarm for Compressor 1�s functioning hour threshold reaching. This is just an indication alarm. It does not compromise the units good operation. To delete this alarm reset the hours (see mantainance as described before). With the Tecnair default values this alarm does not appear.

XB Compressor 2 functioning hours

Alarm for Compressor 2�s functioning hour threshold reaching. This is just an indicative alarm. It does not compromise the unit good operation. To delete this alarm reset the hours (see mantainance as described before). With the Tecnair default values this alarm does not appear.

XC Supply air fan functioning hours Exaust fan functiong hours

Alarm for the fan functioning hour threshold reaching. This is just an indicative alarm. It does not compromise the unit good operation. To delete this alarm reset the hours (see mantainance as described before). With the Tecnair default values this alarm does not appear.

XD Electric heater 1 functing hours

Alarm for the first electric heater�s functioning hour threshold reaching. This is just an indicative alarm. It does not compromise the unit good operation. To delete this alarm reset the hours (see mantainance as described before). With the Tecnair default values this alarm does not appear.

XE Electric heater 2 functing hours

Alarm for the second electric heater�s functioning hour threshold reaching. This is just an indicative alarm. It does not compromise the unit good operation. To delete this alarm reset the hours (see mantainance as described before). With the Tecnair default values this alarm does not appear.

XF Humidifier 1 functiong hours

Alarm for the first humidifier�s functioning hour threshold reaching. This is just an indicative alarm. It does not compromise the unit good operation. To delete this alarm reset the hours (see mantainance as described before). With the Tecnair default values this alarm does not appear.

XG Room temperature feleer broken or disconected

Feeler alarm for ambient temperature broken or disconnected. The unit continuoes working leaving the component active (hot or cold component). This alarm indicates that the feeler is not connected to the microprocessor, or that the microprocessor is reading a value out of it’s range.

XH Supply air temperaure feeler broken or disconnected

Feeler alarm for supply air temperature broken or disconnected. The unit continues working. This alarm indicates that the feeler is not connected to the microprocessor, or that the microprocessor is reading a value out of it’s range.


XI External temperature feeler broken or disconnected

Feeler alarm for external temperature broken or disconnected. The unit continues working. This alarm indicates that the feeler is not connected to the microprocessor, or that the microprocessor is reading a value out of it’s range.

XJ Humidity feeler broken or disconnected

Feeler alarm for ambient humidity broken or disconnected. The unit continues working. This alarm indicates that the feeler is not connected to the microprocessor, or that the microprocessor is reading a value out of it’s range.

XK External humidityt feeler broken or disconnected

Feeler alarm for external humidity broken or disconnected. The unit continues working. This alarm indicates that the feeler is not connected to the microprocessor, or that the microprocessor is reading a value out of it’s range.

XL Differential pressosta broken or disconnected

Feeler alarm for air capacity fan 1 broken or disconnected. The unit continues working. This alarm indicates that the feeler is not connected to the microprocessor, or that the microprocessor is reading a value out of it’s range.

XM Room pressure feeler broken or disconnected

Feeler alarm for ambient pressure broken or disconnected. The unit continues working. This alarm indicates that the feeler is not connected to the microprocessor, or that the microprocessor is reading a value out of it’s range.

YR Defrost feler temp. ompr.1 broken or disconnected

Defrost feler temperare compr.1 broken or disconnected. The unit continues working. This alarm indicates that the feeler is not connected to the microprocessor, or that the microprocessor is reading a value out of it’s range.

YS Defrost feler temp. ompr.1 broken or disconnected

Defrost feler temperare compr.2 broken or disconnected. The unit continues working. This alarm indicates that the feeler is not connected to the microprocessor, or that the microprocessor is reading a value out of it’s range.

XN External air filter clogged Alarm for external air intaking pre-filter clogged.

XO Supply air filter clogged

Allarm for supply air filter clogged. It dosen�t stop the unit

XP Suction air filter clogged

Alarm for suction air filter clogged

XQ **SERIOUS ALARM *

Fire /fume ** UNIT OFF **

Alarm for fume/fire presence. It stops the unit.

XR

Antifreeze Alarm of anti-frost intervention for very low temperature.

XS

Eeprom broken

Alarm for eprom failure.


XT General alarm compressor 1

Alarm for comp.1�s high pressure or technician intervention It doesn�t stop the unit. Warning: manual reactivation of the pressostat required after having found out the cause of the alarm.

XU General alarm compressor 2

Alarm for comp.1�s high pressure or technician intervention It doesn�t stop the unit. Warning: manual reactivation of the pressostat required after having found out the cause of the alarm.

XW Low pressure comprressor 1

Alarm for low pressure switch intervention. It doesn�t stop the unit but only the component . Warning: the pressostats reactivation is automatic but the alarm need to be manual reactivated whilst the compressor can automatically restart.

XX Low pressure comprressor 2

Alarm for low pressure switch intervention. It doesn�t stop the unit. Warning: the pressostats reactivation is automatic but the alarm need to be manual reactivated whilst the compressor can automatically restart.

XY thermical rehating coil

Intervention of the coil for the protection of the electric post heating coil. To reset the alarm the reset of the thermical is necessary.

YA Heating coil thermal

This alarm indicates the intervention of the electric coil themrical protection (manual reset of the themrical required). Or thetripping alarm for the intervention of the elctrical resistance thermostat. The thermostats are 2: the first interviens at 70°C aand has automatic rearmament. The second thermostat, a security measure, interviens 95°C and has manual rearmament. The unit continuous functioning .

YB** SERIOUS ALARM **

Supply air fan thermal protection n°1

** UNIT OFF **

Alarm for thermal protection intervention for supply air temperature n°1. The unit continous working if the doubly fan is present (accessory) otherwise the unit stops.

YC Exaust air fan thermal

protection

Tripping alarm for the thermic expulsion fan n°1. This alarm is not considered as a cause to stop the unit since in case of emergency it is simply a case of leaving a door slightly open. The alarm stops the unti in case of working in depression.

YD

** SERIOUS ALARM * Supply air fan

** UNIT OFF **

Allarme di stato del fane di mandata. L�unità si spegne.

YE Expulsion fan status

Alarm status for the expulsion fan.

YH

High room temeparture Alarm for high ambient temperature which is reached once the set limit is reached and the time set. It does not stop the unit

YI Low ambient temperature

Alarm for low ambient temperature which is reached once the set limit is reached and the time set. It does not stop the unit

YL Circulator alarm

Water circulator alarm. Only for units withheat recovery coils.


YM ** SERIOUS ALARM *

Damper status ** UNIT OFF **

Alarm for damper status. UNIT OFF

YV Flooding alarm Flooding alarm. It does not stop the unit. Allarme E06 High humidifier 1/2 current

Alarm for high current absorption measured by the TAM of the humidifier 1 / 2.

Allarme E09

lack of water in the humidiifer 1 / 2

Alarm for lack of water in the humidifier The lack of water is measured by the level sensors placed on the cylinder.

Alarm E10 Lack of current humidiifer

1 / 2

Alarm for lack of current in the humidifier The high tension is measured by the level sensors placed on the cylinder.

Alarm E12

Low ambient humidity Alarm for low ambient humidity

Alarm E11

High ambient humidity Alarm for high ambient humidity

YN not communicating Alarm which indicates that one or more card do not communicate with one another. YO Post heating 1 heater functiong hors

Alarm for re-heating heater 1�s functioning hour threshold reaching]. This is just an indicative alarm. It does not compromise the unit good operation

YP Post heating 2 heater functiong hors

Alarm for re-heating heater 2�s functioning hour threshold reaching]. This is just an indicative alarm. It does not compromise the unit good operation

XR Supply humidity feeler broken or disconnected

Alarm for supply humidity feeler broken or disconnected The unit continues working. This alarm indicates that the feeler is not connected to the microprocessor, or that the microprocessor is reading a value out of it’s range.

YS Humidifier 2 functiong hopurs

Alarm for humidifier 2�s functioning hour threshold reaching]. This is just an indicative alarm. It does not compromise the unit good operation

YT

Low supply air temperature

Allarm for low supply air temperature.

Yz Supply fan status n°2 Intervention alarm for thermical supply fan n°2 status Ka Thermical expulsions fan n°2

Thermical status expulsion fan n°2

Ke Alarm for terminal filter dirty

Terminal filter dirty alarm

NO ALARM No active alarm


14 UNIT CONFIGURATION: MEANING AND USE OF THE MASKS FOR SERIES K AND R

14.1 MANUFACTURER LOOP: MASKS FOR THE COMPONENTS CONFIGURATION (K & R SERIES)

UNIT CONFIGURATION

This operation is made by Tecnair during the test of the unit and must be repeated by skilled technicians only in case of microprocessor substitution or anyway by Tecnair LB autorized personel. Through the configuration we inform the microprocessor of the components ibnstaleld inside the unit, so that it can handle them and display th eventual alarms.

The information relative to the components installed in the unit (number of compressors, fans, dampers, humidifier dimensions etc) are all retrievable in the units technical specifications (provided with the oreder confirmation) and in the electric diagram provided with the unit.

The unit configuration is protected by a password: 0694

ALL SET VALUES ARE STORED WITHIN A PERMANENT MEMORY TO AVOID THEIR LOSS AT THE LOSS OF FEEDING TO THE UNIT.

ia Insert the manufacturer password 0000

Mask to enter into the manufacturer masks branch through password

ib English Language Humidity probe N Out.air probe N

Mask to set the available language Setting room humidity feeler presence Setting supply air temperature feeler presence

ic Probes Out.water probe N In.water probe N Ext.air probe N

Mask to set the presence of the feelers, respectively for: Water outlet temperature Water inlet temperature External temperature

id R3 Digital output mode VALVE FREE COOLING

Mask which allows for the setting of the n° 3 digital exit for FREE COOLING

ie Temperature Setting value of Dead Zone 0000

Mask which allows for the setting of the temperature control dead zone. Within this zone the micro does not activate the components.

if Temperature Energy Saving Set Point 00.0C Band 00.0C

Mask to select the set point for the ES units. Allows to select the temperature set point for the water and the relative band. For the water temperature up to �° the compressor functionment is inhibited.

ig Heaters Type of insertion STANDARD Heaters (1-2) 0

Mask for the setting of the presence, of the number and the type of electric heater. Up to 2 electric heaters with binary stabdard type functionemnt can be selected.

ih Heaters Delay between heaters insertion 000 seconds

Setting of the delay between the activation of the first and second electric heater. Mask visible only if the number of electric heaters is 2. Vartable delay between 000 and 999 seconds. The default value is 3 seconds.

li Modulable Valves Heating valve N 0 By-pass 00.0 000.0%

Mask to set the presence of the hot modulating valve and the hot gas by-pass valve.


ij Modulable Valves Cooling valve N with free cooling ? N

Mask to set the presence of the cold modulating valve and for it�s abilitation for ES units. FC/TS the simultaneous functiuonemnt is possible only for FC, in case of TS there would be the risk of freezing the cold coil.

ij Modulable Valves Are compressors enabled also with valve or FC ? N

Mask which allows to select the possibility to have the simultaneous functionemnt of the modulating cold valve with the compressors.

ik Modulable Valves Cooling valve Start 000% End 000%

Setting of the functionemnt range of the modulating cold coil. These percentages must be intended as relevant to the proportional band (mask totally open at the setted starting value and totally closed at the the ending value).

il Modulable Valves Heating valve Start 000% End 000%

Mask to set the modulating hot valve. Allows to set the closure and maximum opening in percentage in regards to the proportional band. Setting of the functionemnt range of the modulating hot coil. These percentages must be intended as relevant to the proportional band (mask totally open at the setted ending and totally closed at the the starting value).

im 3Points Valves Cooling 3p valve Start 000% End 000%

Mask to set the functionemnt range of the 3 point modulating hot/cold valve. These percentages must be intended as relevant to the proportional band (mask totally open at the setted starting value and totally closed at the the ending value).

in 3Points Valves Heating 3p valve Start 000% End 000%

Mask to set the functionemnt range of the 3 point modulating cold/hot valve. . These percentages must be intended as relevant to the proportional band (mask totally open at the setted starting value and totally closed at the the ending value).

io 3Points Valves Running time of 3 points valve 000 sec

Mask for the setting of the running time of the 3 point valve this mask appears only in presence of at least one 3 point valve, in case of more valves the set value is valid for all.

ip Compressors Compressors number to insert (1-2) 0

Mask which allows to set the presence of the number of compressors installe din the unit. Maximum number allowed is 2.

iq Compressor 1 (DE) Position 000% Hysteresis 000%

Setting of the position and hysteresis of the 1st compressor This mask appears if the presence of a second compressor is set and with the energy saving option disabled. Suggested parameters: 50-50 if only 1 compressor is installed, 25-25 if 2 compressors are installed.

is Compressor Compressor 2 (DE) Position 000 %Hysteresys 000 %

Introduction of the position and the hysteresis for the Compressor 2 This mask appears if the presence of a second compressor is set and with the free cooling option disabled and 2 compressors are installed.

it Compressor 1 (ES) Position 000% Hysteresis 000%

Setting of the position and hysteresis of the 1st compressor This mask appears if the presence of a second compressor is set and with the energy saving option enabled.

iv Compressor Compressor 2 (ES) Position 000 %Hysteresys 000 %

Introduction of the position and the hysteresis for the Compressor 2 This mask appears if the presence of a second compressor is set and with the energy saving option enabled.


iw Min.OFF time compressor 180sec Min. ON time compressor 060sec

Introduction of the minimum delay time between de-activation and re-activation of the same compressor, and of the minimum working time

ix Delay start same compressor: 360 sec Delay start different compressor: 600 sec

Introduction of the delay time between de-activation and re-activation of the same compressor to limit the number of starting ups within an hour. Introduction of the delay time between different compressors, if two compressors have been selected.

NOTE The default introductions of the compressor parameters limit to 10 the

turning on and off of each compressor for each working hour of the compressor itself.

iy Compressors Low pressure alarm Delay 000 seconds

Setting of the minimium compressor stop time for the revealing of the low pressure alarm.

la Compressors Automatic rotation enable?

NO

Introduction of compressors rotation, if two compressors have been selected. If the inverter or the hot gas injection has been selected on the 1° compressor, don.t activate the rotation. The compressor activation cycle will be: 1 2/ 2 1 / 1 2 / 2 1 / (the underlined number means that this is the first compressor to activate). This unit is normally present only if two compressors are installed. Tecnair LB always sets the compressor with less working hours to start. This regulation does not intervene in case the accessory �hot gas injection regulation� is installed.

lb Local Network Number unit 0 Type 1 Alarm unit N Work's hours 6

Number of units in local network (values 1-6) and emergency alarm type. (1) Abilitation of the indicator on the master unit of the alarm status of a slave unit. Hours of functionemnt before the rotation between the unit in stand-by and active units.

(2) if the emergency alarm is of the type 1, the stand-by unit intervenes to rescue the other units in a programmable lapse of time from the moment in which the high or low temperature alarm is indicated. Instead, if the emergency alarm is of type 2, the stand-by unit intervenes immediately to rescue the other units when the temperature passes the programmed high and low temperature limit .

lc Local Network Threshold high temp. slave 00.0C Delay start 000min

Setting of the alarm limit for the low temperature (local network) and delay for the intervention of the unit in stand-by. This mask appears if the emergency alarm is of type 1.

lc Local Network Threshold high temp. slave 00.0 + 00.0°C

Setting of the high temperature alarm limit (local network) for the intervention of the unit in stand-by. This mask appears if the emergency alarm is of type 2.

ld Dehumidification By dig.output N Logic dehumid. NO By-pass MAX 0.0V

Mask which allows for the settino of the dehumidification function and the abiliatation of the logical functionment for the low temperature limit. Setting of the hot by-pass valve opening during the dehumidification.

lf Compensation Set-Point 00.0C Percentage 000% Type DIRECT

Setting of the percentage and type of compensation (direct or indirect). Mask visible only if the temperature feeler alarm is present on the supply air. The parameters of this mask are NOT used by the software.

lg Fans Fans n° to insert (1-2) 1

Setting of the number of fans present in the air conditioner. Possilbe values are 0, 1 and 2. In case of 3 fans, set anyway 2, because the fans 1 and 2 are connected in parallel. IMPORTANT: the three valve and electric coil cannot co-exist. Therefore avoid setting the presenc of both reheating devices.

lh 3Points Valves Cooling 3p valve N Heating 3p valve N

Setting of the three point cold valve Setting of the three point hot valve


li Inverter(press.) N Steam valve N

Mask to set the presence of the inferter Mask to set the presence of the steam valve

lj Insert default values N

Mask to reset the micropressor memory in order to restart the configuration. . By activating this voice the unit is brought back to the settings for a standard model. It becomes therefore necessary to set the unit back to it�s correct configuration. This function is to erase the micorprocsessors memeory and allow a clenaning of the micro�s memory in case of block. To reconfigure the unit it is necessary to enter into the configuration loop (see chapter 11.1) and re set all the compoents present (compressor, valves etc). this information is retrievable form the electrical diagram and by the order confirmation.

lk Delay on first start factory setting 000sec

Mask to select a delay for the sart up of all the components when the unit is switched ON.

ll Alarm delay on threshold 000sec Delay start 000sec

Mask to set the delay of the high and low pressure alarm signal for the compressor functioning startup.

lm Supervison baud Speed 1200 Protocol Identification 0000

Msk to configure the trasmission protocol (Carel or Modbus), the trasmission speed and the unit identification number.

ln Enable remote ON/OFF N

Able the remote ON/OFF. If ON/OFF is activated the air condtioner switches on if the 24 Vac digital ID8 clamping is present and switches of if the tension between the two clamps is null.

lo Delay for automatic return to menu 000sec

Setting of the automatic return time to the main menu

lp Dehumidification Maximum time hot gas for dehumidification 000

Setting of the functioning time for the post heating with hot gas for dehumidification. This mask is visible only if in the id mask the digital exit R3 is set for the hot gas compensation.

lq Humidifier Production 00 Kg/hTAM model 50 Phases number 1

Introduction of the nominal power for the humidifiers steam production Introduction of the TAM model Introduction of the number of phases for the feeling tension. For the setting of these values refer to chapter 7 of this manual

jq HUMIDIFIER TAM Model 50 Enable drain without voltage N

Introduction of the TAM model Abilitation of the water drainage in case of lack of tension to the electrodes.

lr humidifier drain with electrodes under tension? N

Switches on the drainage of the tension presence cylinder for the electrode humidifiers.


ls HUMIDIFIER C0: 0093 C1: 0075

Constants for the control of the humidification software For the setting of these values refer to chapter 7 of this manual

lt Inverter (comp.) Min voltage 00.0V Max break 000min Max speed 000min

Msk to set the configuration of the inverter. We can set the minimum valtage (to avoid problem on the compressor), the delay to start the compressor on maximum speed (required to alow the oil retur to the compressor) and the time we want tha compressor run at maximum speed.

lu Low supply temp. Management with cold stop Delay alarm 000sec

Mask which allows for the setting of the low temperature supply air alarm mode. Three different versions are available: Cold stop (stops the cold component), activate hot (activates at the same time even the hot component to correct the T), only alarm signaling. This mask is visualized only if the temperature feeler is installed on the fresh air to the room.

lv High supply temp. Management with hot stop Delay alarm 000sec

Mask which allows for the setting of the hightemperature supply air alarm mode. Three different versions are available: Hot stop (stops the hot component), activate cold (activates at the same time even the cold component to correct the T), only alarm signaling. This mask is visualized only if the temperature feeler is installed on the fresh air to the room.

lw Temperature NTC 00.0-000.0°C

Mask for the calibration of the environment temperature feeler

lx Outlet temp. NTC 00.0-000.0°C

Mask for the calibration of the supply air temperature feeler

ly Humidity NTC 00.0-000.0 ur%

Mask for the calibration of the environment humidity feeler

lz Change manufacturer password 0000

Mask for the modification of the manufacturer password The default value remains anyway valid.


15. PROGRAMMING AND CONTROL OF THE UNITS FUNCTIONMENT: (K & R SERIES)

The regulation program is made by he User through the keyboard and gives to the microprocessor the operating parameters: set points, alarm thresholds a.s.o.

The regulating program can handle: − Fans. − Compressors. − Elettric heating resistences. − Modulanting valves: valves controlled by the pCO2 with a 0�10 Vdc signal directly proportioned to the set range.

This means that if the temperature is at the upper limit of the range the signal coming out of the pCO is of 10 Vdc. Instead, if the temperature is equal to the set-point the outgoing la tensione from the pCO is of 0 Vdc.

− Three point valves: water valves commanded by the pCO2 with a signal for opening and one for closing. These valves have an opening time, that represents the necessary time to pass from the position of complete closing to that of complete opening. Sending the signal of opening or closing for a determined time, it is possible to open or close the valve. In this case it is not possible to precisely aknolwledge the position of the valve. The valves, modulanti or to three points, they are completely closed to the beginning of the proportional gang, that is in proximity of the set-point, and completely open at the end of the gang. Every time that a valve to three points, must be activate, the program sends a command of closing to line up the position of the same valve before beginning the regulation. This operation is not necessary for the valve modulante in how much in absence of tension it automatically brings him in the position of closing.

− Inverter: A device that allows the variation of the feeding frequency of the devices connected to it to check the capacityof the supply fan. The inverter is commanded by the pCO2 with a 0-10 Vdcs signal.

− Hot gas injection: to regulate the cooling capacity in relation to the room temperature − Modulating humidifier: device for the production of humidity.

15.1 LOOP MENU: READING OF VALUES SIGNALLED BY THE FEELERS (K & R SERIES)

You accesses this loop of masks after having pressed the Menu key. In this loop of masks the values are visualized and read by the existing feelers. To this intention we remember that the temperature feeler for the environment is the only feeler to be always present.

Pressing once the key Menu ignites the corresponding led and on the display the mask that points out: - the value of the temperature environment; is visualized.

- the value of the damp environment (the indication of damp is different only from zero if the probe of damp is

present);

- the time and the actual date (if it foresees the card clock);

- the state of the unit (ON-OFF).

By Pressing the keys Increase and Decrease it is possible to flow through the loop of masks of menu. Following this the loop of the masks of menù is brought

12:14 08/07/2001

Temperature 20.0ßC º Humidity 50.0ur%º

* UNIT OFF *

It displays the time and date It displays the values of temperature and humidity of the ambiance. It displays the units status

Supply air 00.0º Supply humid. 00.0%º Ext.air 00.0ßC º Ext.humid. 00.0ur%º

Supply air temperature/humidity value Fresh air/humidity temperature values (with presence of feelers)

Steam prod. #1 00.0 Kg/h Steam production during humidification request


15.2 MANTAINANCE LOOP: READING OF THE WORKING HOURS OF THE COMPONENTS (K & R SERIES)

You access this loop of masks after having pressed the MANTAINANCE key.. In this loop of masks the functioning hours are visualised for the main components of the air conditioner (fans, compressors�.)

Pressing once the maintenance key the relative leds switch on and the masks indicating the functionment hours of the fans and compressors is visualised.

Pressing the increase and decrease keys it is possible to scroll throguh the mantainance mask loop. The following is the mantainance mask loop.

ba Time counter Unit 00000 Compressor 1 00000 Compressor 2 00000

It display the functioning hours of the unit (by referring to the main fan) and of the compressor(s).

bb Time Counter Humidifier 00000 Heater 1 00000 Heater 2 00000

It display the functioning hours of the humidifier It display the functioning hours of the heaters # 1 It display the functioning hours of the heaters # 2

bc Insert.counter. Compressor 1 00000 Compressor 2 00000 Reset #1No #2No

Number of compressors # 1starting ups (if present) Number of compressors # 2 starting ups (if present) How to reset: the enter key will move the cursor; the arrow will change the parameter into “yes” (after a few seconds, it will automatically go back to �no�).

bd fan Working hours 00000 Threshold 00000 Reset No

It display the functioning hours of the fan Mask to set the Threshold for the functioning alarm Possibility to reset it as described before.

be Compressor 1 Working hours 00000 Threshold 00000 Reset No


bf Compressor 2 Working hours 00000 Threshold 00000 Reset No


bg Humidifier Working hours 00000 Threshold 00000 Reset No

Functioning hours humidifier (if present) Threshold for indicative alarm How to reset: the enter key will move the cursor; the arrow will change the parameter into “yes” (after a few seconds, it will automatically go back to �no�).

bh Heater 1 Working hours 00000 Threshold 00000 Reset No


bi Heater 2 Working hours 00000 Threshold 00000 Reset No



NOTE To reset the hours of operation of the components, It is necessary to press ENTER up to bring the cursor under the writing N. So to perform the reset it is necessary to press the increase or decrease key up to when the writing Y appears. At this point release the key and wait for the writing N to appears. Planning 0000 as threshold value for the times of operation the operation alarm will never be had.

15.3 I/O LOOP: INPUT/OUTPUT: READING OF STATUS OF THE COMPONENTS (K & R SERIES)

You access this loop of masks after having pressed the Input/Output key. In this loop of masks it is possible to visualize the state of the principal components of the conditioners.

Pressing once the Input/output key ignites the corresponding led and on the display the mask that points out the state of all the entries and digital exits is visualized.

By pressing the Increase and Decrease key it is possible to flow the loop of the masks of control of the entries and the exits. Following the loop of the input/output masks is brought.

If a component is active the writing ON appears, otherwise the writing OFF appears.

da Digitals input C=Close O=open 01:CCCCCCCCCCCCCC 15:CCCCCCCCCCCCC

It displays the digital inputs mode. The C letter means that the input is closed (running); therefore that there is a 24 Vac tension between the digital imput clamp and the common one. The letter A means that the input is open (not running) and that therefore there is a 0 Vac tension between the digital input clamp and the common one.

db Digital Outputs 1 Fan1(Unit ON) O 2 Fan2 O 3 E.S. O

It displays the status of the digital outup for the fan # 1 It displays the status of the digital outup for the fan # 2 It displays the status of the digital outup for the ES

db Digital Outputs 4 Humidification O 5 Fill O 6 Drain O

It displays the status of the digital outup for the humidifier It displays the status of the digital outup for the fill valve It displays the status of the digital outup for the drain valve

dc Digital Outputs 7 Compressor N.1 O 8 Compressor N.2 O

It displays the status of the digital outup for the compressor # 1 It displays the status of the digital outup for the compressor # 2

dc Digital Outputs 9 Heater N.1 O 10 Heater N.2 O 11 General Al. O

It displays the status of the digital outup for the heater # 1 It displays the status of the digital outup for the heater # 2 It displays the status of the digital outup for the general alarm

dd Analog Output Inv./By-pass 000% Steam valve 000%

It displays the percentage of opening for the Inverter/by-pass valve. It displays the percentage of opening for the steam valve

de Analog Output Cooling valve 000% Heating valve 000%

It displays the percentage of opening for thecooling valve. It displays the percentage of opening for the heating valve

df HUMIDIFIER Cil.worm out N Mode --------- Status H. ---------

Humidifier status Full cylinder alarm, therefore full of calchar (S/N) Humidifier mode signal (1) Humidifier mode signal (2)

df HUMIDIFIER Main Contact OFF Fill Valve OFF Drain Valve OFF

It displays the status of the main contactor of the humidifier It displays the status of the fill valve It displays the status of the drain valve


df HUMIDIFIER Level : open Conduc.: 0000uS/Cm

Humidifier status State of the feelr which indicates if the cylinder is full. Valve for the water conductivity in the cylinder expressed in µS/cm

df HUMIDIFIER measured 000.000A target 000.000A nominal 000.000A

Humidifier status Instant value of tension absorbed by the humidifier. Value to be reached for the humidifier absorbed tension Maximum tension which can be produced

15.4 LOOP CLOCK: SETTING OF THE OPERATION (K & R SERIES) You access this loop of masks after having pressed the Clock key. In this loop of masks it is possible to visualize and to plan the current time and the current date.

Pressing once the key clock ignites the corresponding led and on the display the mask is visualized for the visualization of the date and the current time.

By pressing the Increase and Decrease key it is possible to flow through the loop of the masks related to the clock. What follows is the loop of the masks of the clock.

ea Clock & Date dd/mm/yy 00/00/00 hh:mm 00:00

Setting of the date Setting of the time

eb TIME ZONE Insert the password for daily time zone 0000

Mask to insert the password to acces to the delay time zone configuration. (password 0123)

Ec TIME ZONE Daily Time Zone Enabled N

Mask to enable the daily time zone.

ed Temperature Daily Time Zone 1 Setpoint 00.0°C End Time 00:00

Mask to set the temperature set point of the period 1 Mask to set the end time for the period 1

eh Humidity Daily Time Zone 1 Setpoint 00.0°C End Time 00.00

Mask to set the humidity set point of the period 1 Mask to set the end time for the period 1

15.5 LOOP SET: SET POINTS REGULATION (K & R SERIES) You access this loop of masks after having pressed the set key. In this loop of masks it is possible to plan the

set-point for the regulation of the temperature and humidity in the environment, brought air, over/under pressure in the environment,

Pressing once the set key Set ignites the corresponding led and on the display the mask is visualized for the formulation of the set-point of temperature.

By pressing the increase and decrease keys it is possible to flow through the loops of the set masks.

fa Set Point -- Temp. 23.0 °C

Mask for introduction of the set temperature

fb Humidifier - Humidity 55.0 ur% Production 12.5 kg/h

Mask to set the humidity set-point and the steam production.


fd Humidification Humidity band 10.0 UR% Low humidity 30.0 UR% High humidity 30.0 UR%

Mask to assign the range of regulation for the humidity and the alarm values (tied up to the minimum and maximum value admitted of humidity) of high and low humidity. Mask to set the functionemnt of the humidifier

15.6 LOOP PROGRAMMATION; OPERATION PROGRAM SETTING (K & R SERIES) You access this loop of masks after having pressed the Prog key. This loop of masks allows the user to personalize the regulation in upon his own demands.

Pressing once the down key arrow a mask appears for the insertion of the password for the access to the user planning masks. After having inserted the correct password for the user (0123 is the default) it is possible to flow the loop of the user planning masks by pressing the increase and decrease keys. The following is the loop of the masks for the user planning..

ga Insert the user password 0000

This function is to allow introducing the user password

gb Temperature prop.Band 00.0°C Type Prop. Integr.Time 000sec

Msk to configure the temeparture proportional band and to set the typoe of temperature control (we can select proportion or Proportion+Integarl) Mask the set the integration time (if selected P+I)

gc temperature Alarm's offset High Temp.: 05.0 °C Low Temp.: 05.0 °C

Mask to determinate of the alarm thresholds for low and high room temperature. Thresholds are connected with the temperature set point (ex. By introduction 5°C for high and 5°C for low temperature, with a 20°C introduction, the high temperature alarm will occur at 25°C, while the low temperature alarm will occur at 15°C).

gd Temp.outlet air Low Temp. 00.0°C High Temp. 00.0°C

Mask to set the limit for lowest supply air temperature. Mask to set the limit for highest supply air temperature.

ge Water Temperature Alarm Threshold High Temp. 00.0°C Low Temp. 00.0°C

Mask to set the threshold valkue for for low water temperature. Mask to set the threshold valkue for for low water temperature.

gf

Use humidification plus cooling ? ?

Mask which allows the abilitation to the symulatneous use of the functions of humiditifcation and chilling.

Gh ID User

0000000000 History enabled SI/NO

Unit serial number introduction (useful to program an ordinary or extraordinary maintenance)

gi CALIBRATION Temperature 0.0ßC External Air 0.0ßC Pressure 0.0bar

Mask to calibrate the room temeparture sensor Mask to calibrate the external air temeparture sensor Mask to calibrate the room pressure sensor

gj CALIBRATION Humidity 0.0U% Outlet Water 0.0°C Outlet Air 0.0°C

Mask to calibrate the room humidity sensor Mask to calibrate the outlet water temeparture sensor Mask to calibrate the outlrt airtemeparture sensor

gl Insert the new user password 0000

Mask to insert the new user password Note: the original password will still be valid .


15.7 LOOP INFO: RELEASE OF THE REGULATION PROGRAM (K & R SERIES) This mask is accessed after having pressed Info key. This mask contains information on the regulation software

version.

Pressing once the info key the corresponding led on the display switches on and visualises the information mask on the regulation program.

Ha Air cond+Humi ID User: 0000000000 -- TECNAIR LB -- Ver 1.x12 xx/xx/xx

Short software description. Identification of the air conditioner inserted by the user in the programming phase. Software version and creation date

15.8 LOOP MANUAL CONTROL: MANUAL ACTIVATION OF THE COMPONENTS (K & R SERIES) You access this loop of masks after having pressed the Menu and Set keys simultaneously. This mask loop

allows to manually activate the devices present within the unit.

Pressing the menu and set keys once the corresponding leds light on and on the display the mask for the abilitation of the manual control of the devices within the air conditioner is visualized. The following is the loop of masks for manual control.

The protections for the safeguard of the security and integrity of the components of the air conditioner are maintained even during the air conditioners manual control.

Abilitation of the manual control doesn’t mean manual activation of the unit, but simply manual activation of the components present within the unit. This operation can be executed only with the unit switched off, since the possibility to manually control the fans doesn’t exist.

na manual management enable? NO

Abilitation for the manual control of the air conditioners components. It is unnecessary to remember that only the components who�s presence has been set by the constructor can be activated.

nb Compressor 1 N Compressor 2 N

Manual activation of resistance n°1 Manual activation of resistance n°2 Manual activation compressor n° 1 Manual activation compressor n° 2

nc Manual Y1 000 % Y2 000 % Y3 000 % Y4 000 %

Manual activation for the analogical outpout

nc hetat valve 3P O N Heat valve 3P C N Valv.3P post O N Valv.3P post C N

Manual activation three point hot valve opening Manual activation three point hot valve closure Manual activation three point post hot valve opening Manual activation three point post hot valve closure

NOTE Remember to disable the manual control when exiting this loop of masks, otherwise the air conditioner wont be able to work. 15.9 LOOP SELF TEST: ACTIVATION (K & R SERIES)

The access to this loop of masks is done by pressing the Menu and Clock keys simultaneously. This loop of masks allows to set the number and typologies of the devices (compressors, fans,�) present in the air conditioner.

Pressing once the Menu and Prog keys the corresponding leds switch on and on the display the mask for entering the password and for the access to self tests is visualized.

After having entered the correct password (4321 is the default) it is possible to self test, this means activate all the digital exits of the PCO2. The following is the loop of self test masks.

oa enter password Self test 0000

Mask for entering the self test password (4321).


ob Self test DISABLED

Abilitation/disabled of self test.

NOTE Until when the self test is activated, it is not possible to change mask. 15.10 LOOP SUPERVISION: ACTIVATION OF THE PROGRAM (K & R SERIES)

It is possible to scroll through the previously described masks of all the cards connected in pLAN by a unique shared terminal (therefore with local network address 1 or 15) previously set as shared terminal between the cards.

To visualize the masks of the cards connected in pLAN on the terminal it is sufficient to press in sequence the orange key. For example, in case of a pLAN network of three units, pressing the orange key of the shared terminal it is possible to scroll the mask of each card with this sequence: − No pressure on the orange key mask card 1; − First pressing of the orange key: mask card 2; − second pressing of the orange key: mask card 3; − third pressing of the orange key: mask card 1; − Fourth pressing of the orange key: mask card 2.

To understand which card is controlling in a precise moment the shared terminal it is sufficient to check the menu mask. Beside the # symbol the number of the unit�s controlling card is indicated (cfr Figure 79). ---------------------- ---------------------- ---------------------- |#1 00:00 06/08/2001| |#2 00:00 06/08/2001| |#3 00:00 06/08/2001| |Temperature: 24,5°C | |Temperature: 24,5°C | |Temperature: 24,5°C | |Humidity : 50,0RH%| |Humidity : 50,0RH%| |Humidity : 50,0RH%| | ** UNIT OFF ** | | ** UNIT ON ** | | ** UNIT ON ** | ---------------------- ---------------------- ---------------------- (a) (b) (c)

Figure 89: menu mask of the cards 1 (a), 2 (b) e 3 (c) connected in pLAN network. The first unit is in stand by and the other two are active.


16 ALARM MASKS MEANING (K & R SERIES) Each alarm situation is signaled by:

- Activation of the buzzer incorporated in the user terminal; - Lightening of the red led on the front of the user terminal; - Visualization of the words "AL" on the right hand side angle of the display.

Each alarm mask is identified with a code of two characters situated in the higher left hand side angle of the display, so to ease the recognition of the mask itself.

Pressing the alarm key the message corresponding to the last activated alarm s visualised. With the increase and decrease keys it is possible to scroll through all the alarm signals memorized. Pressing once more the alarm key the memorized alarm signals are cancelled.

If the alarm signals are cancelled without having removed the alarm causes, the alarm signal will immediately reactivate itself.

All alarms are delayed by one minute at the activation of the unit, with the exception of the high/low temperature and humidity alarms and also the broken feeler alarm are delayed by the user for a settable time.

XA Compressor 1 main alarm

Alarm for Compressor 1 high pressure threshold reaching. This is just an indication alarm. It does not compromise the units good operation. To re-activate the unit manually the cause must be individuated

XB Compressor 2 main alarm

Alarm for Compressor 2 high pressure threshold reaching. This is just an indication alarm. It does not compromise the units good operation. To re-activate the unit manually the cause must be individuated

XC Pressostat low pressure 1


XD Pressostat low pressure 2


XE ** SERIOUS ALARM **

Air flow ** UNIT OFF **

Alarm for missing air flow. This is a serious alarm that stop the unit.

** SERIOUS ALARM ** Fans overload

** UNIT OFF ** Alarm for fans overload. It stops the unit.

XF Alarm fan 1 overload Thermic alarm for the intervention of fan 1

XG Alarm fan 2 overload Thermic alarm for the intervention of fan 2

XJ Heaters overload

Thermostat electric heater intervention alarm. The thermostat intervenes at 70°C and is with automatic re-arm. The unit continues working.

XK

** SERIOUS ALARM ** Smoke-Fire-Flooding ** UNIT OFF **

Smoke- fire- flooding alarm. The unit shuts down.

XL Clogged filter Clogged filter alarm. Needs to be substitueted.


XM High room temeparture

Alarm for high ambient temperature which is reached once the set point is reached and passed and after the set time. Does not shut down the unit. If the air condiitoner is in local network this alarm makes the unit switch to stand by mode.

XN Low ambient temperature

Alarm for low ambient temperature which is reached once the set point is reached and passed and after the set time. Does not shut down the unit. If the air condiitoner is in local network this alarm makes the unit switch to stand by mode.

XO Operation hours compressor 1

Alarm which indicates the reaching of the limit of working hours for compressor 1. it is an only signalling alarm and therefore the unti continues working. To eleiminate the alarm reset the hours (see mantainance as described before) With the Tecnai rdefault this alarm does not appear.

XP Operation hours compressor 2

Alarm which indicates the reaching of the limit of working hours for compressor 2 it is an only signalling alarm and therefore the unti continues working. To eleiminate the alarm reset the hours (see mantainance as described before) With the Tecnair default this alarm does not appear.

XQ Operation hours Fan

Alarm which indicates the reaching of the limit of hours for the functioning f the fans. It is an only signalling alarm and therefore the unit continues working. To eliminate the problem reset the hours.

XR Operation hours Heater 1

Alarm which indicates the reaching of the limit of hours for the functionemnt of the electric heater 1. It is an an only signalling alarm andt therefore the unit continues working. To leeiominate the problem reset the hours.

XS Operation hours Heater 2

Alarm which indicates the reaching of the limit of hours for the functionemnt of the electric heater 2. It is an an only signalling alarm andt therefore the unit continues working. To eliminate the problem reset the hours.

XT Operation hours Humidifier

Alarm which indicates the reaching of the limit of hours for the functionemnt of the humdifier. It is an an only signalling alarm andt therefore the unit continues working. To eliminate the problem reset the hours.

XU High temperature outlet water

Alarm for high water outlet temeparture.

XV Low temperature outlet water

Alarm for low water outlet temeparture

XW SERIOUS ALARM ** Room temperature feleer broken or disconected ** UNIT OFF **

Feeler alarm for ambient temperature broken or disconnected. It stops the unit to avoid operating improperly THIS IS AN ALARM WHICH SHUTS THE UNIT OFF

XX Supply air temperaure feeler broken or disconnected

Feeler alarm for supply air temperature broken or disconnected.

XY Water out.temp.probe Faulty/Disconnected

Outle water temperature feeler broken or disconnected

XZ Ext.air temp.probe Faulty/Disconnected

Temeprature feeler alarm broken or disconnected


YA Ambient humid.probe Faulty/Disconnected

Internal humidity feeler alarm broken or disconnected

Alarm E06 Humidifier High current

High tension alarm humidifier 1 or 2. The unti continues working.

Alarm E09 Humidifier Lack of water

Water loss alarm humidifier 1 or 2. The unti continues working.

Alarm E10 Humidifier Lack of current

Tension loss alarm humidifier 1 or 2. The unit continues working.

Alarm E12 Humidifier Low amb.humidity

Low humidity environment alarm. The unit continues working. (see set mask branch).

Alarm E11 Humidifier High amb.humidity

Aalrm for high room humidity

Unit 1 Unit 4 Unit 2 Unit 5 Unit 3 Unit 6 Faulty/Disconnected

Aalrm that indicates that oone unit of the local network is faulty or disconnected. (alarm dshowed only on the master unit).

YD *** ALARM *** UNIT'S ALARM N°

Mask the indicate on the master unit that one of the unit connected in local network has an alarm (this mask is showed only on the master unit).

YE Low outlet air temperature

Low temperature alarm for the supply air. The unit continues working but this alarm shuts down the cold component.

YF Pressure probe Faulty/Disconnected

Alarm for ressure feeler broken or disconnected

YG high pressure Alarm for high pressure

YJ Heater air cooled condenser

Alarm for

YK high outlet air temperature

High temperature alarm for the outlet air. The unit continues working but this alarm shuts down the cold component.

No active alarms No active alarms This mask appears by pressing the alarm key when no alarm is active.

pco2 - Интернет магазин климатической техники и ... manual...

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