Table of Contents
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Summary
1 CONNECTIONS ..............................................................................................................................4
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2 SETUP ................................................................................................................................................8
3 SOFTWARE.....................................................................................................................................9
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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
6 REGULATION................................................................................................................................15
7 PARAMETER LIST.......................................................................................................................16
8 ENCLOSURES ...............................................................................................................................23
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TECHNICAL MANUAL
CVM 2
C 5001 CV/04-99 GB
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Table of Contents
Related Manuals for CLIMAVENETA CVM 2
Summary of Contents for CLIMAVENETA CVM 2
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Page 1: Table Of Contents
TECHNICAL MANUAL CVM 2 C 5001 CV/04-99 GB Summary 1 CONNECTIONS ..........................4 1.1 T ......................4 EMPERATURE PROBES 1.2 P ........................5 RESSURE PROBES 1.3 L ........................ 6 IVE DIGITAL INPUTS 1.4 R ........................6 ELAY OUTPUTS 1.5 S ......................7 ERIAL CONNECTIONS 1.6 K... -
Page 2: Board Description
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. - Page 3 TECHNICAL MANUAL CVM 2 C 5001 CV/04-99 GB Figure 1-1 MAIN BOARD...
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Page 4: Connections
TECHNICAL MANUAL CVM 2 C 5001 CV/01-99 IT Connections 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... -
Page 5: Pressure Probes
TECHNICAL MANUAL CVM 2 C 5001 CV/04-99 GB 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... -
Page 6: Live Digital Inputs
TECHNICAL MANUAL CVM 2 C 5001 CV/01-99 IT 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... -
Page 7: Serial Connections
8-pin, TTL telephone-type connector. Keyboard It is connected to the following terminals, as indicated in the figure below: KEYBOARD TERMINALS MAIN BOARD TERMINALS 12Vac 12Vac BASE CVM 2 Current loop è ç Current loop Figure 1-1 KEYBOARD CONNECTION Remote keyboard LOCAL 12Vac... -
Page 8: Power Supply
TECHNICAL MANUAL CVM 2 C 5001 CV/01-99 IT Power supply The CVM 2 has a 230 Vac supply to terminals 49 and 50, phase and neutral respectively. Setup Access to programming Press the MENU key; The corresponding LED will light up and two fixed values will be displayed. -
Page 9: Software
TECHNICAL MANUAL CVM 2 C 5001 CV/04-99 GB Software Description of user interface If the POWER LED is on, it means that the electronic control is supplied with power. Unit startup Press the ON/OFF/RESET key. The inlet temperature value will be displayed on the screen. -
Page 10: Unit Shutdown
TECHNICAL MANUAL CVM 2 C 5001 CV/01-99 IT Unit shutdown Press the ON/OFF/RESET key. The display will go off. 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. -
Page 11: Alarm Signals
TECHNICAL MANUAL CVM 2 C 5001 CV/04-99 GB Alarm signals Code ALARM Reset type Cause Remote off Automatic Check the connection between terminals 8 and 9. Circuit 1 high pressure Manual Check the power supply to the fans; Check if the condensing coils are clean (Chiller);... - Page 12 TECHNICAL MANUAL CVM 2 C 5001 CV/01-99 IT Circuit 2 low pressure Automatic Check the water flow rate to the evaporator (Chiller) Check if the condensing coils are clean (Heat pump). Compressor 2 thermal protection Manual Possible compressor motor malfunction.
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Page 13: How To Visualise The Resource Status
TECHNICAL MANUAL CVM 2 C 5001 CV/04-99 GB How to visualise the resource status 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. - Page 14 TECHNICAL MANUAL CVM 2 C 5001 CV/01-99 IT Fan module outlet 2 --- not present 0 - 100% ST1 inlet water temperature --- probe not present value in °C/10 ERR probe error Remote ON/OFF status --- not present ON contact closed...
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Page 15: Regulation
TECHNICAL MANUAL CVM 2 C 5001 CV/04-99 GB Regulation 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... -
Page 16: Parameter List
TECHNICAL MANUAL CVM 2 C 5001 CV/01-99 IT Parameter list = USER PARAMETERS M = UNIT PARAMETERS CI = CIRCUIT PARAMETERS CO = COMPRESSOR PARAMETERS TYPE UNIT PARAMETERS RANGE DEFAUL TYPE OF UNIT Tab. 7-1 Value Description Water-air chiller Water-water chiller... - Page 17 TECHNICAL MANUAL CVM 2 C 5001 CV/04-99 GB HEAT PUMP OPERATION COMPRESSORS t p.48 2° 1° DIFFERENTIAL p.5 WINTER SET TEMPERATURE DIFFERENTIAL p.5 Figure 7-2 HEAT PUMP REGULATION SUMMER FAN SPEED MINIMUM PRESSURE 0 30 SUMMER FAN SPEED MAXIMUM PRESSURE...
- Page 18 TECHNICAL MANUAL CVM 2 C 5001 CV/01-99 IT CHILLER OPERATING MODE VENTILATION PRESSURE [Bar] MAXIMUM p.7 MINIMUM p.6 CUT-OFF + DELTA CUT-OFF p.14 MINIMUM p.12 MAXIMUM p.13 FAN SPEED Figure 7-3 FANS SPEED REGULATION IN CHILLER MODE HEAT PUMP OPERATING MODE VENTILATION PRESSURE [Bar] CUT-OFF p.15...
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Page 19: Fans Speed Regulation Table Heat Pump Mode
TECHNICAL MANUAL CVM 2 C 5001 CV/04-99 GB ANTIFREEZE ALARM SET p.62 p.63 °C/10 ANTIFREEZE HYSTERESIS 0 126 °C/10 ANTIFREEZE RESET TYPE 0=AUTOMATIC flag 1=MANUAL ANTIFREEZE ALARM BY-PASS CONFIGURATION 0=NEVER num. (E05/E25) FOR CIRCUIT 1 AND 2 1=HEAT 2=COOL 3=ALWAYS... - Page 20 TECHNICAL MANUAL CVM 2 C 5001 CV/01-99 IT LOW PRESSURE BY-PASS TIME IN HEAT PUMP 0 255 MODE FOR CIRCUITS 1 AND 2 LOW PRESSURE BY-PASS TIME IN CHILLER 0 255 MODE FOR CIRCUITS 1 AND 2 DELAY BETWEEN 1...
- Page 21 TECHNICAL MANUAL CVM 2 C 5001 CV/04-99 GB DIFFERENTIAL/FLOW SWITCH ALARM DELAY 0 126 UNIT ADDRESS flag 0 255 ST1 PROBE CONFIGURATION Tab. 7-3 ST2 PROBE CONFIGURATION Tab. 7-3 ST3 PROBE CONFIGURATION Tab. 7-3 SP5 PROBE CONFIGURATION Tab. 7-3 SP6 PROBE CONFIGURATION Tab.
- Page 22 TECHNICAL MANUAL CVM 2 C 5001 CV/01-99 IT REMOTE CONTROL CONFIGURATION Tab. 7-5 Parameter value Meaning ABSENT HEAT PUMP (p.67=1 E p.68=2) CHILLER (p.67=0 E p.68=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.
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Page 23: Enclosures
TECHNICAL MANUAL CVM 2 C 5001 CV/04-99 GB Enclosures...
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