Daikin EWLD120MBYNN Operation Manual Download

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EWLD120MBYNN
EWLD170MBYNN
EWLD240MBYNN
EWLD260MBYNN
EWLD340MBYNN
EWLD400MBYNN
EWLD480MBYNN
EWLD500MBYNN
EWLD540MBYNN

Summary of Contents for EWLD120MBYNN

Page 1: ...OPERATION MANUAL EWLD120MBYNN EWLD170MBYNN EWLD240MBYNN EWLD260MBYNN EWLD340MBYNN EWLD400MBYNN EWLD480MBYNN EWLD500MBYNN EWLD540MBYNN Condenserless water cooled water chillers...

Page 2: ...d water chillers Operation manual READ THIS MANUAL ATTENTIVELY BEFORE STARTING UP THE UNIT DO NOT THROW IT AWAY KEEP IT IN YOUR FILES FOR FUTURE REFERENCE Before starting up the unit for the first tim...

Page 3: ...0 Condensor refer to engeneering specifications as published by the supplier of your remote condenser Evaporator Type brased plate heatexchanger Qty x model 2x AC250EQ NP128 1x AC250EQ NP128 1x AC250...

Page 4: ...sor 14 Digital display controller 2 Evaporator 15 Emergency stop 3 Switchbox 16 Power supply intake 4 Compressor switchbox 17 Field wiring intake 5 Charge valve 18 Holes for lifting 6 Safety valve 19...

Page 5: ...orator The main function of the evaporator is to take heat from the water that flows through it This is done by turning the liquid refrigerant coming from the condenser into gaseous refrigerant Water...

Page 6: ...omes too high If this occurs shut down the unit and contact your local dealer High pressure switch Each circuit is protected by two high pressure switches S PH which measure the condenser pressure pre...

Page 7: ...circuit 2 BEFORE OPERATION Checks before initial start up After the installation of the unit check the following before switching on the circuit breaker 1 Field wiring Make sure that the field wiring...

Page 8: ...he switch boxes may only be opened by a licensed electrician for maintenance purposes 3 To prevent the evaporator from freezing and to avoid damage to the LCD displays of the digital controller never...

Page 9: ...an initialization cycle is started Once all the timers have reached zero the unit starts up When the remote ON OFF control parameter is set to YES the following table applies 2 If the water chiller do...

Page 10: ...available if voltage and current transmitters are installed This readout menu provides information concerning the voltage and the compressor current 7 Press the h key to enter the next screen of the...

Page 11: ...s provided by the different menus In the following chapter you will find how you can set up and configure the unit using the various menu functions All menus are directly accessible using the correspo...

Page 12: ...ot a password is needed to enter the setpoints menu To enter the service menu only a qualified installer is allowed to access this menu 2 5 4 4 2 2 1 2 2 To check the actual value of the general softw...

Page 13: ...ther or not the discharge thermal protector or the compressor thermal protector are activated for circuit 1 To check the status of the high pressure switch the reverse phase protector and the overcurr...

Page 14: ...to a failure circuit 1 will start up instead In the automatic mode the number of hours indicated on the display is the maximum difference between the running hours of both circuits This value is impor...

Page 15: ...en Defining free cooling The screen of the usersettings menu allows the user to control a 3 way water valve when the unit is in free cooling state To make this possible a changeable digital output has...

Page 16: ...the water flow through the evaporator stops after the flowstart timer has reached zero If the water flow has not restarted during the countdown the unit will shut down PUMPLEAD refer to the pump contr...

Page 17: ...which contains the following information the time and date 2 Press h to consult the first screen This screen contains information about the unit name and the refrigerant used 3 Press h to consult the...

Page 18: ...en a safety device was activated stop the unit and find out why the safety device was activated before resetting it Under no circum stances safety devices may be bridged or changed to a value other th...

Page 19: ...t the inlet of the condenser may not exceed 43 C RESET After finding the cause push the button on the high pressure switch housing and reset the controller Symptom 5 4 Reverse phase protector is activ...

Page 20: ...pecifications of the water quality Water filters Make sure to clean the waterfilter in front of the evaporator water inlet once every 4 months Check the filter for any possible damage and make sure th...

Page 21: ...t working The diagram and table below show the default value and the upper and lower limits of the floating setpoint parameters on the evaporator INLET CONTROL Default value Lower limit Upper limit St...

Page 22: ...ttings of groups and work similar as following example settings for group 1 ANNEX IV Free cooling working Free cooling on ambient temperature Free cooling on difference between inlet water evaporator...

Page 23: ...2 2 q h q q g h h h g h g h g h g h g h g h g g h g h g h g h g h g h g h g h g h g h g h g h h g g g 2 f 4 4 2 5 4 4 2 4 4 4 4 4 4 4 4 4 4 0 4 4 4 4 g h g h g h q h p 2 6 g h g h 0 7 g h 3 3 2 2 2 1...

Page 24: ...Zandvoordestraat 300 B 8400 Oostende Belgium 4PW22687 1...