CLIMAVENETA CVM 2 Technical Manual

TECHNICAL MANUAL

CVM 2

C 5001 CV/04-99 GB

Summary

1 CONNECTIONS ..............................................................................................................................4

1.1 TEMPERATURE PROBES.............................................................................................................4

1.2 PRESSURE PROBES.......................................................................................................................5

1.3 L IVE DIGITAL INPUTS................................................................................................................6

1.4 RELAY OUTPUTS .......................................................................................................................6

1.5 SERIAL CONNECTIONS ..............................................................................................................7

1.6 KEYBOARD...................................................................................................................................7

1.7 REMOTE KEYBOARD .................................................................................................................. 7

1.8 POWER SUPPLY ........................................................................................................................... 8

2 SETUP................................................................................................................................................8

2.1 ACCESS TO PROGRAMMING.......................................................................................................8

3 SOFTWARE.....................................................................................................................................9

3.1 DESCRIPTION OF USER INTERFACE .........................................................................................9

3.2 UNIT STARTUP ............................................................................................................................ 9

3.3 UNIT SHUTDOWN ..................................................................................................................... 10

3.4 ALARMS...................................................................................................................................10

3.4.1 Circuit and/or compressor alarms..............................................................................10

3.4.2 General alarms...............................................................................................................10

4 ALARM SIGNALS ........................................................................................................................11

5 HOW TO VISUALISE THE RESOURCE STATUS .................................................................13

5.1 V ISUALISATION OF UNIT'S RESOURCE STATUS....................................................................13

6 REGULATION................................................................................................................................15

6.1 CHILLED WATER REGULAT ION ............................................................................................. 15

6.2 HOT WATER REGULATION.....................................................................................................15

7 PARAMETER LIST.......................................................................................................................16

8 ENCLOSURES ...............................................................................................................................23

1

TECHNICAL MANUAL

CVM 2

C 5001 CV/01-99 IT

Board description

The system consists of a main board which is located inside the electrical panel, and of a keyboard (Enclosures fig. 1). The boards for the continuous adjustment of the fan speed are connected to the main board. The keyboard communicates with the main board through a serial current-loop and receive the power supply from the main board.

Figure 1-0 COMPLETE SYSTEM

2

50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

Figure 1-1 MAIN BOARD

TECHNICAL MANUAL

CVM 2

C 5001 CV/04-99 GB

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10

9 8 7 6 5 4 3 2 1

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TECHNICAL MANUAL

CVM 2

C 5001 CV/01-99 IT

1 Connections

1.1 Temperature probes

The connected temperature probes are 3, or 4 in the case of water-water heat pumps with reversing cycle on the water side.

TERMINALS MEANING 1, 2 Inlet water temperature 3, 4 1st evaporator outlet water temperature 5, 6 2nd evaporator outlet water temperature (only with plate

heat exchangers)

7, 8 (only for water-water heat pumps

Condenser inlet water temperature

with reversing cycle on the water side)

Temperature [°C] -55 -50 -40 -30 -20 Resistance [Ω]

485 510 562 617 677

Temperature [°C] -10 0 10 20 25 Resistance [Ω]

740 807 877 951 990

Temperature [°C] 30 40 50 60 70 Resistance [Ω]

1029 1111 1196 1286 1378

Temperature [°C] 80 90 100 110 120 Resistance [Ω]

1475 1575 1679 1796 1896

Temperature probes verification procedure:

• disconnect the power supply to the unit;

• disconnect the probe from microprocessor’s terminals;

• use a digital Ohmmeter to measure the resistance value of the probe;

• measure the temperature near the probe cap;

• compare the resistance value measured with the one shown in the table: the corresponding temperature must be

approximately the same as the measured one.

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TECHNICAL MANUAL

CVM 2

C 5001 CV/04-99 GB

1.2 Pressure probes

There are two 4-20mA , 0-30 bar pressure probes for all the units, except for the water-water heat pumps with reversing cycle on the water side.

TERMINALS MEANING 7, 8 1st circuit condensing pressure 9, 10 2nd circuit condensing pressure

Pressure [Bar] 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Current [mA] 4.00 4.27 4.54 4.80 5.07 5.34 5.61 5.87

Pressure [Bar] 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 Current [mA] 6.14 6.41 6.68 6.94 7.21 7.48 7.75 8.01

Pressure [Bar] 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 Current [mA] 8.28 8.55 8.82 9.08 9.35 9.62 9.89 10.15

Pressure [Bar] 12.0 12.5 13.0 13.5 14.0 14.5 15.0 15.5 Current [mA] 11.43 10.69 10.96 11.23 11.49 11.76 12.03 12.30

Pressure [Bar] 16.0 16.5 17.0 17.5 18.0 18.5 19.0 19.5 Current [mA] 12.56 12.83 13.10 13.37 13.63 13.90 14.17 14.44

Pressure [Bar] 20.0 20.5 21.0 21.5 22.0 22.5 23.0 23.5 Current [mA] 14.70 14.97 15.24 15.51 15.77 16.04 16.31 16.58

Pressure [Bar] 24.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5 Current [mA] 16.84 17.11 17.38 17.65 17.92 18.18 18.45 18.72

Pressure transducer verification procedure:

• switch off the compressors and leave the unit with only the “ON/OFF switch” button ON;

• disconnect the cable from terminal 7 or 9 of microprocessor, depending on the probe;

• place digital milliammeter between the disconnected terminal and the cable and read the current value;

• read the pressure value using a gauge placed near the transducer;

• compare the readings with the values shown in the table.

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TECHNICAL MANUAL

CVM 2

1.3 Live digital inputs

The following table shows the logic meaning of the AT digital inputs (230 Vac) and their arrangement:

TERMINALS MEANING

11, 12, 17 Common to all high voltage inputs 22 - AT1 Circuit 1 high pressure switch 16 - AT2 Circuit 2 high pressure switch 23 - AT3 Circuit 1 low pressure switch 15 – AT4 Circuit 2 low pressure switch 18 – AT5 Circuit 1 compressor thermal protection 14 – AT6 Circuit 2 compressor thermal protection 19 – AT7 Circuit 1 fans thermal protection 13 – AT8 Circuit 2 fans thermal protection

C 5001 CV/01-99 IT

20 – AT9 Water differential pressure switch and external flow switch 21 – AT10 ON/OFF switch

1.4 Relay outputs

RELAY N.O. N.C. COM.

RL1 Cumulative alarm 41 39 40 RL2 Antifreeze 44 RL3 circuit 1 fan control 35 34 RL4 circuit 1 compressor control 43 RL5 circuit 2 compressor control 36 37 RL6 circuit 2 fan control 33 RL8 circuit 1 4-way valve control 46 47 45 RL9 circuit 2 4-way valve control 38 RL10 water pump control 42

6

TECHNICAL MANUAL

LOCAL

REMOTE

CVM 2

C 5001 CV/04-99 GB

1.5 Serial connections

8-pin, TTL telephone -type connector.

1.6 Keyboard

It is connected to the following terminals, as indicated in the figure below:

KEYBOARD TERMINALS MAIN BOARD TERMINALS

4 28 3 29 1 31 2 32

1 12Vac 31 2 12Vac 32

3 Current loop è 29 4 ç Current loop 28

Figure 1-1 KEYBOARD CONNECTION

BASE CVM 2

1.7 Remote keyboard

1 12Vac 31 2 12Vac 32

3 Loop è 29 4 28

BASE CVM 2

3 4 ç Loop

1 12Vac (from supplementary 2 12Vac (from supplementary

Figure 1-2 REMOTE KEYBOARD CONNECTION

NB: The supplementary transformer is the 230/12 Vac transformer supplied with the remote keyboard kit. The maximum length of the remote keyboard’s AWG24-type serial cable is 50 metres.

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TECHNICAL MANUAL

CVM 2

1.8 Power supply

The CVM 2 has a 230 Vac supply to terminals 49 and 50, phase and neutral respectively.

C 5001 CV/01-99 IT

2 Setup

2.1 Access to programming

Press the MENU key;

$ The corresponding LED will light up and two fixed values will be displayed.

+ Press the SET key;

$ The parameter index (on the right-hand side of the display) will start flashing.

+ Scroll through the parameter list using the “arrow up” and “arrow down” keys to visualise the required parameter. + Press the SET key

$ the value of the parameter (on the left-hand side of the display) will start flashing.

+ Modify the value using the “arrow up” and “arrow down” keys. + Press the SET key to confirm the operation. + To access the FACTORY menu scroll through the list until parameter 92 appears, then enter the password. + To exit, press the MENU key.

WARNING To memorise the modifications and make them active you must turn off the power supply (using the main switch)

and, after a few seconds, turn it back on.

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TECHNICAL MANUAL

CVM 2

C 5001 CV/04-99 GB

3 Software

3.1 Description of user interface

If the POWER LED is on, it means that the electronic control is supplied with power.

3.2 Unit startup

+ Press the ON/OFF/RESET key.

$ The inlet temperature value will be displayed on the screen.

+ Press the MODE key.

• If the unit is a CHILLER:

$ The COOLING LED comes on. The two COMPRESSOR 1 and COMPRESSOR 2 LED’s start flashing,

indicating the selection and stand-by condition required by the timer. Then they become steady, indicating operational readiness, first of COMPRESSOR 1 and then of COMPRESSOR 2.

• If the unit is a HEAT PUMP:

$ the HEATING LED comes on. The two COMPRESSOR 1 and COMPRESSOR 2 LED’s start flashing,

indicating the selection and stand-by condition required by the timer. Then they become steady, indicating operational readiness, first of COMPRESSOR 1 and then of COMPRESSOR 2.

To modify the operating mode, press the MODE key; the unit will prepare for the change by shutting down the compressors and then reactivating them in accordance with the procedure described above.

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TECHNICAL MANUAL

CVM 2

3.3 Unit shutdow n

C 5001 CV/01-99 IT

+ Press the ON/OFF/RESET key.

$ The display will go off.

3.4 ALARMS

There are two types of alarms: circuit/compressor and general alarms.

3.4.1 Circuit and/or compressor alarms

Visualisation of the circuit and compressor alarms. The circuit and/or compressor alarms are visualised with the corresponding flashing code on the DISPLAY while the

ALARM LED comes on. The related compressor is simultaneously shut down.

Alarm reset:

+ Press the ON/OFF/RESET key: the unit will be shut down.

3.4.2 General alarms

Visualisation of the general alarms The general alarms are visualised with the corresponding flashing code on the DISPLAY while the ALARM LED comes on.

The compressors are simultaneously shut down.

Alarm reset:

+ Press the ON/OFF/RESET key: the unit will be shut down.

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TECHNICAL MANUAL

CVM 2

C 5001 CV/04-99 GB

4 Alarm signals

Code ALARM Reset type Cause

E00 Remote off Automatic

E01 Circuit 1 high pressure Manual

E02 Circuit 1 low pressure Automatic

E03 Compressor 1 thermal

protection

E04 Circuit 1 fan thermal

protection

E05 Circuit 1 antifreeze Manual

E06 ST2 probe malfunction Automatic

E07 ST5 probe malfunction Automatic

E21 Circuit 2 high pressure Manual

Manual

% Check the connection between

terminals 8 and 9.

% Check the power supply to the

fans;

% Check if the condensing coils

are clean (Chiller);

% Check the water flow rate to

the evaporator (Heat pump).

% Check the flow rate to the

evaporator (Chiller);

% Check if the condensing coils

are clean (Heat pump).

% Possible compressor motor

malfunction

% Possible electric fan motor

malfunction

% Check the water flow rate to

the evaporator;

% Check the operation of the

water pump;

% Verify if cold set point is

correct (parameters: 2, 58, 59).

% Check the connections to

board terminals 3 and 4;

% Probe malfunction. % Check the connections to

board terminals 7 and 8;

% Probe malfunction. % Check the power supply to the

fans;

% Check if the condensing coils

are clean (Chiller);

% Check the water flow rate to

the evaporator (Heat pump).

11

E22 Circuit 2 low pressure Automatic

E23 Compressor 2 thermal protection Manual

E24 Circuit 2 fan thermal protection Manual

E25 Circuit 2 antifreeze Manual

E26 ST3 probe malfunction Automatic

E27 ST6 probe malfunction Automatic

E40 ST1probe malfunction Automatic

E41 Water differential pressure

switch (external flow switch)

Automatic

TECHNICAL MANUAL

CVM 2

C 5001 CV/01-99 IT

% Check the water flow rate to

the evaporator (Chiller)

% Check if the condensing coils

are clean (Heat pump).

% Possible compressor motor

malfunction.

% Possible electric fan motor

malfunction.

% Check the water flow rate to

the evaporator;

% Check the operation of the

water pump;

% Verify if cold set point is

correct (parameters: 2, 58, 59).

% Check the connections to

board terminals 5 and 6;

% Probe malfunction. % Check the connections to

board terminals 9 and 10;

% Probe malfunction. % Check the connections to

board terminals 1 and 2;

% Probe malfunction. % Check the water flow rate to

the evaporator;

% Purge the air from the water

side;

% Possible pressure switch

malfunction.

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TECHNICAL MANUAL

CVM 2

C 5001 CV/04-99 GB

5 How to visualise the resource status

5.1 Visualisation of the unit’s resource status

+ Press the STATUS key.

$ The STATUS LED comes on. The resource index appears on the left-hand side of the DISPLAY, while the

corresponding status appears on the right-hand side.

+ Press the “arrow up” and/or “arrow down” key to scroll through the list.

Index Resource Meaning

01 Compressor 1 01 summer cycle operation

02 Compressor 1 hours Operating hours since last operating hours reset 03 Circuit 1 fans 01 operating

04 Circuit 1 defrosting -- not present

05 Fan module outlet 1 0 - 100% 21 Compressor 2 -- not present

22 Compressor 2 hours -- not present

23 Circuit 2 fans -- not present

24 Circuit 2 defrosting -- not present

02 winter cycle operation 03 defrost operation 04 delay on compressor start 06 compressor off

02 off for defrosting 06 fans off

01 defrosting 02 compressor 1 safety count 03 defrosting time count 04 active defrosting delays 06 inactive

01 summer cycle operation 02 winter cycle operation 03 defrost operation 04 delay on compressor start 06 compressor off

Compressor operating hours since last time reset

01 operating 02 off for defrosting 06 fans off

01 in progress 02 compressor 1 safety count 03 defrosting time count 04 active defrosting delays 06 inactive

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TECHNICAL MANUAL

C 5001 CV/01-99 IT

25 Fan module outlet 2 --- not present

0 - 100%

40 ST1 inlet water temperature --- probe not present

value in °C/10 ERR probe error

41 Remote ON/OFF status --- not present

ON contact closed OFF contact open

42 Outlet temperature of 1st ST2

evaporator

--- probe not present value in °C/10 ERR probe error

43 Outlet temperature of 2nd ST3

evaporator

--- probe not present value in °C/10 ERR probe error

44 Condensing water inlet

temperature reading for unit with reversing cycle on water

--- probe not present value in °C/10 ERR probe error

side ST5 or condensing pressure

reading for unit with fans speed regulation SP5

45 Condensing pressure reading for

unit with fans speed regulation SP5

--- probe not present value in °C/10 ERR probe error

46 Water pump status --- pump not present

01 pump on 06 pump off

47 Water pump hours --- pump not present

Number of hours counted since the last time reset

48 Antifreeze heater --- heater not present

01 heater on 06 heater off

CVM 2

14

TECHNICAL MANUAL

CVM 2

C 5001 CV/04-99 GB

6 Reg ulation

6.1 Chilled water regulation

+ To modify the working set point of the unit in Chiller mode, modify the value of parameter 2, following the

parameter access procedure described above (chap. 2).

N° of parameters Default value

2 Chiller set point 12 °C 4 Chiller differential 1 °C

48 ∆t

NB: regulation is made based on the temperature reading at the evaporator inlet.

2 °C

6.2 Hot water regulation

To modify the working set point of the unit in Heat Pump mode, modify the value of parameter 3, following the parameter access procedure described above (chap. 2).

N° of parameters Default value

3 Heat pump Set Point 40 °C 5 Heat pump differential 1 °C

48 ∆t

NB: regulation is made based on the temperature reading at the condenser inlet.

2 °C

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TECHNICAL MANUAL

CVM 2

C 5001 CV/01-99 IT

7 Parameter list

= USER PARAMETERS

M = UNIT PARAMETERS CI = CIRCUIT PARAMETERS CO = COMPRESSOR PARAMETERS

N. TYPE UNIT PARAMETERS RANGE DEFAUL

1 M TYPE OF UNIT

0↔5

Value Description 0 Water-air chiller 1 Water-water chiller 3 Water-air heat pump 5 Water-water heat pump with reversing cycle on liquid side

Table 7-1 UNIT TYPE’

T

Tab. 7-1

2 M COLD SET POINT (COOLING)

3 M WARM SET POINT (HEATING)

4 M COOLING DIFFERENTIAL

5 M HEATING DIFFERENTIAL

COMPRESSORS

2°

∆t p.48

1°

Figure 7-1 REGULATION IN CHILLER MODE

DIFFERENTIAL p.4

CHILLER OPERATION

SUMMER SET

p.2

p.58↔p.59

p.60↔p.61

0↔126

DIFFERENTIAL p.4

TEMPERATURE

120 °C/10

400 °C/10

10 °C/10

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TECHNICAL MANUAL

CVM 2

C 5001 CV/04-99 GB

HEAT PUMP OPERATION

COMPRESSORS

∆t p.48

2°

1°

DIFFERENTIAL p.5

Figure 7-2 HEAT PUMP REGULATION

6 M SUMMER FAN SPEED MINIMUM PRESSURE 7 M SUMMER FAN SPEED MAXIMUM PRESSURE 8 M WINTER FAN SPEED MINIMUM PRESSURE 9 M WINTER FAN SPEED MAXIMUM PRESSURE 10 M CIRCUIT No. 1 FAN OPERATING MODE 0=MODULATING

11 M CIRCUIT No. 2 FAN OPERATING MODE 0= MODULATING

12 M MODULATING OUTPUT LOWER LIMIT 13 M MODULATING OUTPUT UPPER LIMIT 14 M SUMMER CUT-OFF SET POINT 15 M WINTER CUT-OFF SET POINT 16 M RESTART AT 100%: 0=W/OUT

17 M CUT-OFF BY-PASS TIME 18 M FAN PEAK CURRENT TIME 19 M FAN START MODE 0=ON REQUEST

WINTER SET

p.3

DIFFERENTIAL p.5

TEMPERATURE

0↔30 0↔30 0↔30 0↔30

OUTPUT 1=ON/OFF 2=DISABLED

0↔100 0↔100 0↔30 0↔30

CURRENT PEAK 1=WITH CURRENT PEAK

0↔126 0↔126

1=CONTINUOUS

14 Bar 19 Bar 5 Bar 4 Bar 0 num.

0 num.

30 % 100 % 13 Bar 6 Bar 1 flag

30 sec 30 sec 1 flag

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TECHNICAL MANUAL

MINIMUM p.6

CVM 2

C 5001 CV/01-99 IT

CHILLER OPERATING MODE VENTILATION

PRESSURE [Bar]

MAXIMUM p.7

CUT-OFF + DELTA

CUT-OFF p.14

Figure 7-3 FANS SPEED REGULATION IN CHILLER MODE

MINIMUM p.12 MAXIMUM p.13

HEAT PUMP OPERATING MODE VENTILATION

CUT-OFF - DELTA

CUT-OFF p.15

MINIMUM p.8

PRESSURE [Bar]

MAXIMUM p.9

Figure 7-4 FANS SPEED REGULATION IN HEAT PUMP MODE

MINIMUM p.12 MAXIMUM p.13

FAN SPEED

20 M DEFROST START PRESSURE 21 M DEFROST END PRESSURE 22 M DEFROST STAND-BY TIME 23 M MAXIMUM DEFROST TIME 24 M DELAY BETWEEN FIRST CIRCUIT END OF

DEFROST AND SECOND CIRCUIT START DEFROST

25 M FORCED VENTILATION PRESSURE DURING

DEFROST

18

0↔30 0↔30 0↔126 0↔126 0↔126

0↔30

30 Bar 140 Bar 30 min 5 min 2 min

16 Bar

TECHNICAL MANUAL

CVM 2

C 5001 CV/04-99 GB

26 M ANTIFREEZE ALARM SET

27 M ANTIFREEZE HYSTERESIS

p.62↔p.63

0↔126

28 M ANTIFREEZE RESET TYPE 0=AUTOMATIC

1=MANUAL

29 M ANTIFREEZE ALARM BY-PASS CONFIGURATION

(E05/E25) FOR CIRCUIT 1 AND 2

0=NEVER 1=HEAT 2=COOL 3=ALWAYS

31 M ANTIFREEZE BY-PASS TIME 32 M ANTIFREEZE HEATER START SET POINT

33 M ANTIFREEZE HEATER START HYSTERESIS

0↔255

-280↔500

0↔126

38 M FAN MOTORS PHASE ANGLE VALUE

0↔126

39 M WATER PUMP OPERATING MODE 0=NOT PRESENT

1=CONTINUOUS 2=ON REQUEST BY THERMOREGULATOR

40 M COMPRESSOR START DELAY AFTER PUMP

START

41 M PUMP SHUTDOWN DELAY AFTER

COMPRESSOR SHUTDOWN

42 M DIFFERENTIAL PRESSURE SWITCH AND

EXTERNAL FLOW SWITCH ALARM BY-PASS

0↔126

(E41) UPON PUMP START

43 M DIFFERENTIAL PRESSURE SWITCH AND

EXTERNAL FLOW SWITCH ALARM RESET BY-

0↔126

PASS (E41)

44 CO TYPE OF RESET OF COMPRESSOR THERMAL

PROTECTION ALARM (E03/E23)

45 CI TYPE OF RESET OF FAN THERMAL

PROTECTION ALARM (E04/E24)

46 CO COMPRESSOR THERMAL PROTECTION ALARM

BY-PASS TIME (E03/E23)

0=AUTOMATIC 1=MANUAL

0↔126

47 M TEMPERATURE UNIT OF MEASUREMENT 0=CELSIUS

1=FAHRENHEIT

48 M

∆t 0↔126

49 M SAFETY TIME BETWEEN COMPRESSOR START

AND SHUTDOWN

50 M SAFETY TIME BETWEEN 1st AND 2nd

COMPRESSOR START

0↔126

30 °C/10

40 °C/10

1 flag

1 num.

30 sec 30

°C/10 40

°C/10

5 num.

1 num.

60 sec

30 sec

10 sec

1 flag

1 sec

0 flag

20 °C/10

6 sec x10

36 sec x10

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TECHNICAL MANUAL

C 5001 CV/01-99 IT

51 CI LOW PRESSURE BY-PASS TIME IN HEAT PUMP

MODE FOR CIRCUITS 1 AND 2

52 CI LOW PRESSURE BY-PASS TIME IN CHILLER

MODE FOR CIRCUITS 1 AND 2

53 M DELAY BETWEEN 1st AND 2nd COMPRESSOR

START

54 M DELAY BETWEEN 1st AND 2nd COMPRESSOR

SHUTDOWN

55 M COMPRESSORS AVAILABLE ON SET POINT

56 CI CIRCUIT 1 CONFIGURATION 57 CI CIRCUIT 2 CONFIGURATION

Parameter value Meaning 0 NO COMPRESSOR 1 1 COMPRESSOR 2 NOT USED

Table 7-2 CIRCUIT CONFIGURATION

CVM 2

0↔255

0↔126

0↔2

0↔2 0↔2

120 sec

10 sec

5 sec

2 num.

Tab. 7-2 Tab. 7-2

58 M SUMMER SET POINT LOWER LIMIT (CHILLER) 59 M SUMMER SET POINT UPPER LIMIT (CHILLER) 60 M WINTER SET POINT LOWER LIMIT (HEAT

PUMP)

61 M WINTER SET POINT UPPER LIMIT (HEAT PUMP)

-20↔p.2 p.2↔50

-10↔p.3

p.3↔60

62 M LOWER ANTIFREEZE SET POINT LIMIT 63 M UPPER ANTIFREEZE SET POINT LIMIT

-28↔p.26 p.26↔60

64 CI 4-WAY VALVE 0=ABSENT (p.1=0-1)

1=PRESENT (p.1=3,

5)

65 CI 4-WAY VALVE POLARITY 0=RELAY ON IN

CHILLER MODE 1=RELAY ON IN HEAT PUMP MODE

66 M DEFROST 0=SEPARATE

1=SIMULTANEOUS

67 M MODE KEY CONFIGURATION 0=COOL/STAND-

BY 1=MULTIPLE (HEAT/COOL/STBY)

68 M OPERATING MODE FROM REMOTE ON

(MAINTAINS THE PREVIOUS STATUS UPON SHUTDOWN FROM REMOTE UNIT)

0=CHILLER 1=PUMP 2=STANDBY

10 °C 20 °C 30 °C

50 °C

3 °C 10 °C

-- flag

1 flag

-- flag

1 flag

2 num.

20

TECHNICAL MANUAL

1=SIMULTANEOUS

C 5001 CV/04-99 GB

70 M DIFFERENTIAL/FLOW SWITCH ALARM DELAY

71 M UNIT ADDRESS

72 M ST1 PROBE CONFIGURATION 73 M ST2 PROBE CONFIGURATION 74 M ST3 PROBE CONFIGURATION 76 M SP5 PROBE CONFIGURATION 77 M SP6 PROBE CONFIGURATION

Parameter value Meaning 0 NOT PRESENT 1 DIGITAL INPUT ON/OFF 2 ANALOGIC INPUT

Table 7-3 PROBE CONFIGURATION

CVM 2

0↔126

0↔255

0↔2 0↔2 0↔2 0↔2 0↔2

2 sec

0 flag

Tab. 7-3 Tab. 7-3 Tab. 7-3 Tab. 7-3 Tab. 7-3

78 M ST1 PROBE OFFSET 79 M ST2 PROBE OFFSET 80 M ST3 PROBE OFFSET 82 M SP5 PROBE OFFSET 83 M SP6 PROBE OFFSET

-100↔100

84 CI DEFROST CYCLES 0=NOT ENABLED

1=ENABLED

85 CI ANTIFREEZE HEATER 0=ABSENT

1=PRESENT

86 CI OPERATION OF ANTIFREEZE HEATERS

0↔2

Parameter value Meaning 0 OPERATION WITH THERMOREGULATOR 1 OPERATION WITH THERMOREGULATOR AND IN DEFROST MODE 2 OPERATION WITH THERMOREGULATOR AND IF REQUIRED BY 2nd

WATER CIRCUIT (ONLY FOR WATER-WATER UNITS WITH REVERSING CYCLE ON GAS SIDE)

Table 7-4 OPERATION OF ANTIFREEZE RESISTANCES

87 CI HIGH PRESSURE ALARM RESET (E01/E21) 0=AUTOMATIC

1=MANUAL

88 CI LOW PRESSURE ALARM RESET (E02/E22) 0=AUTOMATIC

1=MANUAL

89 CI FAN OPERATING MODE 0=INDIPENDENT

(IF CONDENSING COILS ARE SEPARATE)

----- °C/10

----- Bar/10

1 flag

----- flag

Tab. 7-4

1 flag

0 flag

----- flag

(SINGLE CONDENSING COIL)

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TECHNICAL MANUAL

CVM 2

90 M REMOTE CONTROL CONFIGURATION

C 5001 CV/01-99 IT

0↔2

Tab. 7-5

Parameter value Meaning 0 ABSENT 1 HEAT PUMP (p.67=1 E p.68=2)

2 PRESENT (ONLY FOR ON/OFF)

Table 7-5 REMOTE CONTROL CONFIGURATION

WARNING If the unit is switched off using the keyboard’s ON/OFF key, the antifreeze resistance control will also go off. This protection will remain active if the unit is switched off using a remote ON/OFF control or by switching off the

compressors with the MODE key.

CHILLER (p.67=0 E p.68=2)

92 M PASSWORD num. 93 ---------- --------------------------------------------- ------------------------ --------

22

8 Enclosures

TECHNICAL MANUAL

CVM 2

C 5001 CV/04-99 GB

23