Climma CWS 121RC Installation, Operation And Maintenance Manual Download Page 1

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CWS Basic 121-161-201-251

www.climma.it

CHILLER SYSTEM

MODELS CWS BASIC

121-161-201-251

INSTALLATION, OPERATION AND
MAINTENANCE MANUAL

S.p.A

COMPANY

WITH QUALITY SYSTEM

CERTIFIED BY DNV

ISO 9001/2000

Via Cantore, 6/8 - 20034 Giussano (MI) ITALY

Tel. +39 0362.35321 - fax +39 0362.852995

[email protected]

E-mail:

Cod. A041250

01/09/06

Summary of Contents for CWS 121RC

Page 1: ...ELS CWS BASIC 121 161 201 251 INSTALLATION OPERATION AND MAINTENANCE MANUAL S p A COMPANY WITH QUALITY SYSTEM CERTIFIED BY DNV ISO 9001 2000 Via Cantore 6 8 20034 Giussano MI ITALY Tel 39 0362 35321 fax 39 0362 852995 info veco net E mail Cod A041250 01 09 06 ...

Page 2: ... adequate to the maximum operating load Also the sea water pump line should be done with a cable adequate to the power Supply must be connected from a suitable circuit breaker Any maintenance or inspection to the system must be performed dis connecting first the mains supply 1 1 Mains supply The connections of the other system components must be made following our schematics C312 p 2 and C650 for ...

Page 3: ...Page 2 1 ELECTRICAL CONNECTIONS CWS Basic 121 161 201 251 ...

Page 4: ...UD TERMOSTATO CALDO 230V A C FOR FAN COIL SUPPLY INSTALL FUSE 2A x FAN COIL PC CO THC THH EB FLOW SWITCH EXTERNAL CONTROL ALARM DELAY PUMP PUMP FUSE 5 A FOR PUMP PROTECTION Supply 400V A C S POWER 1 1 A 7 8 2 N N C C O T R N GND S R N GND T POWER La scatola elettrica contiene un dispositivo di sicurezza per impedire al compressore di girare nella direzione sbagliata Quindi dopo aver collegato l al...

Page 5: ... position and the water outlet at top The centrifugal pump must be installed at least 0 50 m below the water line B The water intake must be scoop type oriented forward C Seacock strainer and pump intake should be connected without siphoning the piping should always rise from seacock to the pump D The intake line should be as short as possible it is very difficult to run a good circuit with an int...

Page 6: ...er circuit Some rules are given at chapter 2 2 We can resume the following the circuit should always rise from water intake to the unit manifold After that the circuit can rise again or drop to the discharge port It is absolutely important to prevent that the circuit rises and drops making siphons which will prevent air to be drained causing an airlock during the navigation The discharge side of t...

Page 7: ... Fresh water pump respect the layout schematic Fresh water circuit keep in mind that the easiest and shortest is the best Theorethically any high point in the circuit must have a purging valve Siphoning and up and down must be avoided as anyway they make the air purging difficult and trap air Fan coil respect the flow sense Each fan coil is equipped with a purging valve that must be acces sible bo...

Page 8: ...H1 with a manual valve and an automatic check valve which prevents the internal charge to come back to the pressurized sanitary circuit in case of mistake Use one of the two valves to charge and pres surize the circuit with fresh water up to 1 5 Bars checking it with the pressure gauge This port must be permanently connected to the yacht sanitary water system Check that the circuit keeps the press...

Page 9: ...Page 8 3 FRESH WATER CIRCUIT CWS Basic 121 161 201 251 ...

Page 10: ...Page 9 3 FRESH WATER CIRCUIT CWS Basic 121 161 201 251 ...

Page 11: ...of antifreeze lowers the freezing point of the water and adds an additional safety to the circuit Check that the fresh water circuit pressure gauge shows 1 5 bars This device stops the unit if the water flow stops below the preset minimum As explained at chapter 3 2 a safety flow switch is installed in the fresh water circuit outlet manifold It is very important to make sure that this safety devic...

Page 12: ... heat up if the unit is in Heat mode As the fresh water temperature is approaching the set point Cool mode 12 C Heat mode 40 C the thermostat will stop the compressor The speed at which the water cools down depends from several fac tors as the number and capacity of fan coil connected the fan coil speed the room temperature etc therefore this value is not a valuable parameter 4 2 Start up 4 3 Sea ...

Page 13: ...of the fan coils nearer to the manifold in order to let more water to reach the ones which are more distant Check that the thermostat sensor is correctly positioned in the air intake of each fan coil If the temperature control is Fan only the thermostat stops the fan when the ambient temperature reaches the set point IMPORTANT With the Fan only control the thermostat sensor must be installed on th...

Page 14: ... system CWS Basic on the Heat or Cool The system will begin to run and also the compressor 5 3 Pumps Pumps start when the main Mode switch is turned to the Cool or Heat position IMPORTANT Both pumps keep running even when the compressor is stopped by the thermostat 5 3 Stop from the main electrical box Turn the Mode switch to the Off position ...

Page 15: ...he fan speed control can run the fan on three different speeds The minimum speed is in the centre of the fan control switch 5 5 Fan coil in winter operation standard fan coil control panel The temperature in each cabin is controlled by a room thermostat which controls the fan motor The panel fan coil Mode switch see fig 1 must be set in red sun position Set the thermostat according to the desired ...

Page 16: ...y of the sea water circuit inspecting the sea water strainer and evaluating or even measuring the sea water flow from the outlet We suggest keeping available a spare seal for the sea water pump and also one for the fresh water pump Clean or even replace the air filters on each fan coil A dirty air filter is dramatically reducing the fan coil efficiency as it reduces the air flow At the beginning o...

Page 17: ...e control panel is properly set to yhe desi red Mode function Cool in summer and Heat in winter and that the thermostat is tur ned completely to 18 for summer operations and to 24 for winter operations Then check the connecting plugs If the plugs are ok then test the voltage at the plug terminals once the Max speed is selected The voltage between the black and the blue wires must be 230V If the vo...

Page 18: ...Page 17 7 TROUBLESHOOTING CWS Basic 121 161 201 251 7 3 Cool mode the fresh water circuit doesn t cool ...

Page 19: ...Page 18 7 TROUBLESHOOTING CWS Basic 121 161 201 251 7 4 Heat mode the fresh water circuit doesn t heat up ...

Page 20: ...Page 19 8 TECHNICAL DATAS CWS Basic 121 161 201 251 8 1 Fan coil capacitor table Fan coil capacitor speed table for fan coil units capacitors codes Fan coil code Electrical box for models Capacitor Code ...

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Page 24: ...Page 24 9 ELECTRICAL SCHEMATICS CWS Basic 121 161 201 251 ...

Page 25: ...Page 25 9 ELECTRICAL SCHEMATICS CWS Basic 121 161 201 251 ...

Page 26: ...Page 26 9 1 Codes of spare parts CWS Basic 121 161 201 251 16 CWS 121 161 201 251 ...

Page 27: ...mostat support box Hot cycle thermostat Chilly cycle thermostat Thermometer Compressor Compressor klixon Stopper sae Needle valve Schrader High pressure switch Reversal cycle valve Valve coil Electrical box Inox steel tank Outlet rubber holder Outlet rubber holder screw Base fastener clamp 4 parts ...

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