Climma MV8 Bedienungsanleitung

Installation, operation

and maintenance

manual

FAN COIL

CONTROL MV8

Rev. 210525

 
 
 
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Installation manual MV8 –Page 2 / 17 
 
Table of contents 
Introduction........................................................................................................................................................................................ 4 
1. General information .............................................................................................................................................................. 4 
2. Product features .....................................................................................................................................................................4 
3. Directives ................................................................................................................................................................................... 4 
4. Installation................................................................................................................................................................................. 4 
5. Transport and handling ....................................................................................................................................................... 4 
6. Unpacking ................................................................................................................................................................................. 4 
7. General safety.......................................................................................................................................................................... 5 
INSTALLATION...................................................................................................................................................................................6 
1. Climma MV8 control technical features........................................................................................................................6 
2. Positioning of the MV8 control ........................................................................................................................................ 7 
3. Fixing the MV8 control......................................................................................................................................................... 7 
SETTING THE MV8 CONTROL...................................................................................................................................................... 8 
1.1. DIP switch setting.............................................................................................................................................................. 8 
1.2. MV8 configuration for the C-Touch control panel..............................................................................................9 
ELECTRICAL CONNECTION.........................................................................................................................................................10 
1.1. Sicurezza.............................................................................................................................................................................10 
1.2. Electrical supply ...............................................................................................................................................................10 
1.3. Connection schematic...................................................................................................................................................11 
1.4. Fresh water temperature probe CO.........................................................................................................................12 
1.5. Probe CO on Fan coil –Fan only configuration..................................................................................................12 
1.6. Probe CO on Fan coil –Water valve configuration ...........................................................................................12 
1.7. Multiple MV8 controls with a single digital control panel .............................................................................12 
1.8. Modbus communication..............................................................................................................................................13 
Operation...........................................................................................................................................................................................14 
1. Control panel identification .............................................................................................................................................14 
Maintenance.....................................................................................................................................................................................15 
TROUBLESHOOTING.....................................................................................................................................................................16 
1. The digital panel shows n.Pr ...........................................................................................................................................16 
2. The digital panel shows Err.............................................................................................................................................16 
3. Product identification .........................................................................................................................................................16 
4. Fuses..........................................................................................................................................................................................16 
5. Supply check ..........................................................................................................................................................................16 
6. The fan doesn’t work ..........................................................................................................................................................16 
7. Erratic fan speed control ...................................................................................................................................................16 
TECHNICAL CHARACTERISTICS ...........................................................................................................................................17 

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Installation manual MV8 –Page 3 / 17

8.1. 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

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Installation manual MV8 –Page 4 / 17

1. Introduction

1.1.General information

Thank you for choosing our MV8 control for Fan Coil !

1.2.Product features

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. The MV8 control can manage also fan

coils with the water valve option and electrical heater.

The MV8 control accepts the supply of 230V either 50 or 60 Hz.

1.3.Directives

The Climma MV8 control respects the following directives.

• CE

• Low voltage: 2006/95/EC

• Electromagnetic Compatibility: 2004/108/EC

• Machinery Directive: 2006/42/CE

• Manufacturing quality Standards UNI EN ISO 9001:2008

1.4.Installation

The MV8 control must be installed following the instructions and specifications given in this manual.

1.5.Transport and handling

Take every precaution to prevent damage, when handling the unit or components keep in consideration the

information given on the packaging material.

1.6.Unpacking

The MV8 control is carefully packed in a strong carton box. Remove all the carton and the other packing

material. Check that the product has not been damaged.

Caution: Wear protective gloves when handling any packing materials and the wood base. Dispose of all

packaging materials appropriately in accordance with local codes.

WARNING!

Check that the technical specifications on the label are compatible with the Fan coil.

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Installation manual MV8 –Page 5 / 17

1.7.General safety

Injuries or accidents caused by failure to comply with the recommendations of this manual are solely

the responsibility of the unit operator.

Basic Rules for Safe Operation:

• do not touch the unit with moist or wet hands or feet;

• never operate the unit while barefoot;

• before installation and maintenance operations, disconnect the unit from the power supply. failure to

comply may result in injury or death;

• 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;

• during installation and maintenance follow safety codes, wear safety glasses and work gloves.

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Installation manual MV8 –Page 6 / 17

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. There is also a relay to control the water valve and another

relay to power the electrical resistor.

The digital control panel is connected to the MV8 control by means of a cable RJ45 while the optional

ambient probe is connected to the control by a cable RJ12. The MV8 has another RJ12 to be used when

multiple boards are connected in parallel using the same digital panel.

The MV8 control has also a socket for the Modbus communication.

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Installation manual MV8 –Page 7 / 17

2.2.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.

The control box can be installed horizontally or vertically.

2.3.Fixing the MV8 control

The fixing must be carried out using the special brackets supplied with the box and which allow the box to be

fixed without removing the electronic board. The brackets are fixed to the back of the box using the screws

provided. There are 6 fixing positions. The brackets extend 27 mm from the box profile.

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Installation manual MV8 –Page 8 / 17

3. SETTING THE MV8 CONTROL

3.1.1. DIP switch setting

The MV8 control must be set to adapt to the type of operation of the fan coil.

The types of operation are as follows:

PR0 - Fan Only: when the ambient temperature reaches the set point the MV8 control stops the fan.

PR1 - Water valve: when the ambient temperature reaches the set point the control closes the water valve and

drops the fan speed to the minimum.

PR2 - Water valve + strip heater: similar behaviour for the cool mode; when instead the ambient temperature

drops below the set point the 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.

SET the dip switches of the MV8 control to comply to the configuration of the Fan coil.

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Installation manual MV8 –Page 9 / 17

3.1.2. MV8 configuration for the C-Touch control panel

The Climma C-Touch panel allows you to read on the display the fresh water temperature detected by the

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.

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Installation manual MV8 –Page 10 / 17

4. ELECTRICAL CONNECTION

4.1.1. Sicurezza

AVOID THE RISK OF THE ELECTROCUTION !!!

Only qualified staff can execute the troubleshooting and the repair. Keep isolated from the

ground during the execution of the electrical operations, wearing dry clothes, rubber shoes,

rubber carpets, etc.... Don’t check wires under voltage if none can bring help.

IMPORTANT NOTE

To avoid possible electrical shocks, that can cause harm or death to people, execute the

grounding of the air conditioning system, as indicated:

1- Use a suitable electrical cable with ground wire section and isolation to give the charge

from the switch on the control board of the boat to the electrical box of the system. The

ground wire must be correctly connected to the ground terminal of the panel.

2- Check that the ground connection between the electrical box and the air-conditioner

hasn’t suffer any damage during the transport.

3- Check that the connection of the water pump to the suitable terminal of the electrical box

includes also the ground 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.

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