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Daikin EWAP460MBYN [6/22] Before operation
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Operation manual
5
EWAP400~540MBYNN
Packaged air-cooled water chillers
4PW22679-1B
S11S .......... * .........Changeable switch for remote function
(e.g. enable/disable capacity limitation 1)
S12S .......... * .........Changeable switch for remote function
(e.g. enable/disable capacity limitation 2)
S13S .......... ##.......Main isolator switch
S14PH,S15PH .......High pressure switch circuit 1, circuit 2
TC01,TC02.............Optocoupler (analog to digital signal)
TR1 ........................Transfo for control circuit
TR2 ........................Transfo for supply controller + digital inputs
V1............... ** ........V-meter
Y11S,Y21S.............12% capacity step for compressor circuit 1,
circuit 2
Y15S,Y25S.............Liquid injection valve of the compressor circuit 1,
circuit 2
Y16S,Y26S.............Liquid line solenoid valve circuit 1, circuit 2
B
EFORE
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 between the local supply panel
and the unit has been carried out according to the instructions
described in the installation manual, according to the wiring
diagrams and according to European and national regulations.
2 Additional pump interlock contact
Additional pump interlock contacts (S9L) must be provided (e.g.
flowswitch, contact of pump motor contactor). Make sure that
they have been installed between the appropriate terminals
(refer to the wiring diagram supplied with the unit). They must be
normal open contacts.
3 Fuses or protection devices
Check that the fuses or the locally installed protection devices
are of the size and type specified in the installation manual.
Make sure that neither a fuse nor a protection device has been
bypassed.
4 Earth wiring
Make sure that the earth wires have been connected properly
and that the earth terminals are tightened.
5 Internal wiring
Visually check the switch box on loose connections or damaged
electrical components.
6 Fixation
Check that the unit is properly fixed, to avoid abnormal noises
and vibrations when starting up the unit.
7 Damaged equipment
Check the inside of the unit on damaged components or
squeezed pipes.
8 Refrigerant leak
Check the inside of the unit on refrigerant leakage. If there is a
refrigerant leak, call your local dealer.
9 Oil leak
Check the compressor on oil leakage. If there is an oil leak, call
your local dealer.
10 Stop valves
Open the liquid line, discharge and suction (if provided)
stopvalves completely.
11 Air inlet/outlet
Check that the air inlet and outlet of the unit is not obstructed by
paper sheets, cardboard, or any other material.
12 Power supply voltage
Check the power supply voltage on the local supply panel. The
voltage must correspond to the voltage on the identification label
of the unit.
13 Water connection
Check water piping system and circulating pumps.
Check if the filter kit that was supplied with the unit separately is
installed correctly in front of the evaporator water inlet.
14 Water sensors
Check that all the water sensors are correctly fixed into the heat
exchanger (see also the sticker attached to the heat exchanger).
Water supply
Fill the water piping, taking into account the minimum water volume
required by the unit. Refer to the "Installation manual".
Make sure that the water is of the quality as mentioned in the
installation manual.
Purge the air at the high points of the system and check the operation
of the circulation pump and the flowswitch.
Power supply connection and crankcase heating
To switch on the crankcase heater proceed as follows:
1 Switch on the circuit breaker on the local supply panel. Make
sure that the unit is "OFF".
2 The crankcase heater is switched on automatically.
3 Check the supply voltage on the supply terminals L1, L2, L3, by
means of a voltmeter. The voltage must correspond to the
voltage indicated on the identification label of the unit. If the
voltmeter reads values which are not within the ranges specified
in the technical data, check the field wiring and replace the
supply cables if necessary.
4 Check the LED on the reverse phase protectors. If it lights up,
the phase order is correct. If not, switch off the circuit breaker
and call a licensed electrician to connect the wires of the power
supply cable in the correct phase order.
5 Check if the crankcase heaters are warming up.
After 8 hours, the unit is ready for operation.
General recommendations
Before switching on the unit, read following recommendations:
1 When the complete installation and all necessary settings have
been carried out, close all front panels of the unit.
2 The service panels of the 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 switch off the
power supply during winter.
Not included with standard unit
Not possible as option Possible as option
Obligatory # ##
Not obligatory * **
Make sure that the circuit breaker on the power supply
panel of the unit is switched off.
In order to avoid compressor damage, it is necessary to
switch on the crankcase heater for at least 8 hours before
starting the compressor after a long period of standstill.
Содержание
- Operation manual 1
- Packaged air cooled water chillers 1
- Electrical specifications 2
- Important information regarding the refrigerant used 2
- Introduction 2
- Operation manual 2
- Technical specifications 2
- Description 3
- Escription 3
- Function of the main components 4
- Safety devices 4
- Internal wiring parts table 5
- Before operation 6
- Checks before initial start up 6
- General recommendations 6
- Operation 6
- Power supply connection and crankcase heating 6
- Water supply 6
- Digital controller 7
- Operation 7
- Peration 7
- Working with the unit 7
- Consulting actual operational information 8
- Switching the unit off 8
- Switching the unit on 8
- Switching units on off in a dicn system 8
- Adjusting the temperature setpoint 9
- Resetting the unit 9
- Advanced features of the digital controller 10
- All menus are directly accessible using the corresponding key on the digital controller the down arrow x on the display indicates that you can go to the next screen of the current menu using the h key the up arrow w on the display indicates that you can go to the previous screen of the current menu using the g key if c is displayed this indicates that you can either return to the previous screen or can go to the next screen 10
- Depending upon the settings in the user settings menu the 10
- Menu can either be entered directly or by means of the user password 10
- Menu protected by the user password allows a full customization of the units 10
- Readout menu 10
- Setpoint 10
- Setpoints menu 10
- This chapter gives an overview and a brief functional description of the screens 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 10
- Timers menu 10
- User setting 10
- User settings menu 10
- Additionally the number of safeties that already occured can be consulted on the first line of the history screens 11
- Along with the basic information more detailed information screens can be consulted while the safety menu is active press the q key screens similar to the following will appear 11
- Histor 11
- History menu 11
- Info menu 11
- Input outpu 11
- Input output menu 11
- Menu contains all the information concerning the latest shutdowns the structure of those menus is identical to the structure of the safeties menu whenever a failure is solved and the operator performs a reset the concerning data from the safeties menu is copied into the history menu 11
- Menu gives the status of all the digital inputs and the relay outputs of the unit 11
- Menu provides useful information for trouble shooting purposes the following screens contain basic information 11
- Safetie 11
- Safeties menu 11
- To check the actual value of the compressor startup timers and the stop timers 11
- To check the capacity mode and feedback of circuit 1 11
- To check the capacity mode and feedback of circuit 2 11
- To check the status of the changeable digital inputs note that for a unit in a dicn system the inputs apply to this unit it will be the remote input on the master unit however that will be determining for the operation of the unit 11
- To check the status of the fanspeed relays of circuit 1 11
- To check the status of the high pressure switch the reverse phase protector and overcurrent relay for circuit 1 11
- To check the status of the high pressure switch the reverse phase protector and the overcurrent relay for circuit 2 11
- To check the status of the power relays of circuit 1 11
- To check the status of the power relays of circuit 2 11
- To check the time and control mode at the moment of the unit shutdown 11
- To check whether or not the discharge thermal protector or the compressor thermal protector are activated for circuit 1 11
- To check whether or not the discharge thermal protector or the compressor thermal protector are activated for circuit 2 11
- To check whether or not the emergency stop device is active and if there s any water flow to the evaporator 11
- To check which was the evaporator outlet water temperature of the circuit and the thermostat step at the moment of shutdown 11
- To check which was the status of the compressors at the moment of shutdown 11
- To check which were the evaporator and condenser inlet water temperature and the evaporator outlet water temperature 11
- To check which were the pressures of circuit 1 at the moment of shutdown 11
- To check which were the pressures of circuit 2 at the moment of shutdown 11
- To check which were the total amount of running hours of the compressors and the ambient temperature at the moment of shutdown 11
- To consult additional information about the unit such as the unit type and the refrigerant used 11
- To consult information about the circuit 1 safety which caused the shutdown 11
- To consult information about the circuit 2 safety which caused the shutdown 11
- To consult information about the controller s software version 11
- To consult information about the dual pump which caused the shutdown 11
- To consult information about the network safety which caused the shutdown 11
- To consult information about the pcb 11
- To consult information about the unit safety which caused the shutdown 11
- To consult time and date information 11
- Defining and activating the control mode 12
- Defining the lead lag mode 12
- Defining the thermostat settings 12
- Entering the user settings menu 12
- Network menu 12
- User password menu 12
- Defining dual evaporator pump control 13
- Defining free cooling 13
- Defining the capacity limitation settings 13
- Defining the display settings 13
- Defining the pump control settings 13
- Defining the schedule timer 13
- Defining the floating setpoint settings 13
- Activating or deactivating the setpoints password 14
- Checking the actual value of the software timers 14
- Defining bms control 14
- Defining the network settings 14
- Checking the safety info and the unit status after a reset 15
- Checking the status of the inputs and outputs 15
- Consulting additional unit information 15
- Listing activated safeties and checking the unit status 15
- Changing the user password 16
- Roubleshooting 16
- Troubleshooting 16
- Aintenance 18
- Disposal requirements 18
- Maintenance 18
- Maintenance activities 18
- Inlet water temperature control outlet water temperature control 19
- Schedule timer example 19
- Thermostat parameters 19
- Floating setpoint working 20
- Free cooling on ambient temperature 20
- Free cooling on difference between inlet water evaporator temperature and ambient temperature 20
- Free cooling working 20
- Oftware structure 21
- Q q q q 21
- Pw22679 1b 22
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