Climma MV8 Installation, Operation And Maintenance Manual

Fan coil control

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Installation, operation
FAN COIL
and maintenance
CONTROL MV8
manual
Rev. 210525

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Summary of Contents for Climma MV8

  • Page 1 Installation, operation FAN COIL and maintenance CONTROL MV8 manual Rev. 210525...
  • Page 2: Table Of Contents

    Probe CO on Fan coil – Fan only configuration ....................12 4.1.6. Probe CO on Fan coil – Water valve configuration ................... 12 4.1.7. Multiple MV8 controls with a single digital control panel ................12 4.1.8. Modbus communication .............................. 13 Operation......................................14 5.1.
  • Page 3 Fan speed capacitors ................................17 8.2. Capacitor values for Climma Fan coils ......................... 17 8.3. Relays combination on MV8 board ..........................17 8.4. Part numbers of standard spares for MV8 control ....................17 Veco SpA Installation manual MV8 –Page 3 / 17...
  • Page 4: Introduction

    The MV8 control for Fan Coil units has the following features: The MV8 control connected to a digital panel MK2 or C-Touch permits to operate any Climma Fan coil with a complete range of functions. The 8 speed control is made by means of capacitors with a perfect and totally quiet control of the speeds from the minimum to the maximum speed.
  • Page 5: General Safety

    • installation and maintenance of this system can be hazardous due to system working pressure and electrical components. Only a Climma certified service centre should install and maintain the system; • to minimize the hazard of electrical shock and personal injury, this component must be effectively grounded;...
  • Page 6: Installation

    2. INSTALLATION The MV8 control must be installed in the nearby of the Fan coil which is equipped by a 3 m long cable. 2.1. Climma MV8 control technical features The speed control of the Fan coil fan is obtained with 3+1 relays which connect individually or in combination, the capacitors to the fan motor.
  • Page 7: Positioning Of The Mv8 Control

    Positioning of the MV8 control When choosing the position consider that the original cable supplied with the Climma Fan coil is di 3m long. The control box MV8 has an IP20 grade protection, therefore it must be protected from splashing and possible water dropping.
  • Page 8: Setting The Mv8 Control

    MV8 control powers the electrical heater. The setting is made by means of two dip switches identified in the picture: The MV8 board comes non programmed and the 2 dip switches are both in OFF which corresponds to NPR – No Program.
  • Page 9: Mv8 Configuration For The C-Touch Control Panel

    CO sensor installed at the inlet of the fan coil and connected to the MV8 board. This function is not available on the MK2 panel and on the first version of C-Touch. On the MV8 2019 board there is a jumper that enables or disables this function and therefore makes the C-Touch compatible or not.
  • Page 10: Electrical Connection

    4- Check the ground continuity before switching on the air-conditioner. 4.1.2. Electrical supply Check that the ship’s supply meets the MV8 control supply which is 230V-50/60 Hz. Veco SpA Installation manual MV8 –Page 10 / 17...
  • Page 11: Connection Schematic

    4.1.3. Connection schematic Veco SpA Installation manual MV8 –Page 11 / 17...
  • Page 12: Fresh Water Temperature Probe Co

    4.1.7. Multiple MV8 controls with a single digital control panel It is possible to use a single control panel to manage a series of Climma Fan Coils of any model and which are installed to condition the same ambient. The control panel must be connected to a single MV8 controller.
  • Page 13: Modbus Communication

    The presence of the CO sensor, in fact, identifies the "master" card and the panel will refer only to that card, regardless of whether the panel is connected to this card or to another card in the network. The communication connection between the MV8 boards takes place with an RJ12 cable (MBUS) available in different lengths.
  • Page 14: Operation

    For operating instructions refer to the manual or the instructions supplied with the control panel to which The MV8 control is connected. 5.1. Control panel identification To identify the type of control panel, refer to the table below. Veco SpA Installation manual MV8 –Page 14 / 17...
  • Page 15: Maintenance

    6. Maintenance The MV8 control does not require any specific maintenance. It is advisable to periodically check that the electrical box is closed correctly and that there are no traces of water ingress. It is also good to periodically check the fresh water temperature sensor which can be exposed to mechanical stress and oxidation.
  • Page 16: Troubleshooting

    If after carrying out these checks the system still does not work, call the nearest Climma assistance centre. by calling the Veco assistance service at +39.0362.35321 or by consulting the WEB page www.climma.it The digital panel shows 7.1.
  • Page 17: Technical Characteristics

    Fan speed capacitors The MV8 board is an evolution of the Fan Coil Quattro MCON board. Using the combination of the 3 relays you get 7 speeds plus the maximum speed at full voltage. The values of the capacitors and the presence of a resistor are extremely important for the good operation and duration of the control.

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