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Daikin EWLDC12EJYNN [32/88] Warning
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D – KIMWC00412-09EN -32/88
Table 1 - Acceptable water quality limits
PH (25°C)
6.8÷8.0
Total hardness (mg CaCO
3
/ l)
< 200
Electricity conductivity μS/cm (25°C) <800
Iron (mg Fe / l)
< 1.0
Chloride ion (mg Cl
-
/ l)
<200
Sulphide ion (mg S
2 -
/ l) None
Sulphate ion (mg SO
2
4
-
/ l)
<200
Ammonium ion (mg NH
4
+
/ l)
< 1.0
Alkalinity (mg CaCO
3
/ l)
<100
Silica (mg SiO
2
/ l)
< 50
Evaporator and exchangers anti-freeze protection
Two or more of below protection methods should be considered when designing the system as a whole:
1. Continuous water flow circulation inside piping and exchangers.
2. Addition of an appropriate amount of glycol inside the water circuit.
3. Additional heat insulation and heating of exposed piping.
4. Emptying and cleaning of the heat exchanger during the winter season.
It is the responsibility of the installer and/or local maintenance personnel to ensure that two or more of the described anti-
freeze methods are used. Make sure that appropriate anti-freeze protection is maintained at all times. Failure to follow
the instructions above could result in damage to some of the machine’s components. Damage caused by freezing is not
covered by the warranty.
Installing the flow switch
To ensure sufficient water flow through the evaporator, it is essential that a flow switch be installed on the water circuit.
The flow switch can be installed either on the inlet or outlet water piping. The purpose of the flow switch is to stop the
machine in the event of interrupted water flow, thus protecting the evaporator from freezing.
A flow switch specifically gauged for this purpose, with identification code 131035072, is available as an option.
This paddle-type flow switch is suitable for heavy-duty outdoor applications (IP67) for pipe diameters in the range of 1" to
6".
The flow switch is provided with a clean contact which must be electrically connected to the terminals of the terminal
board (check the machine’s wiring diagram for further information).
For further information regarding device installation and settings, please read the instruction leaflet in the device box.
Fig. 5 - Adjusting the safety flow switch
Refrigerating circuit safety valves
Each system comes with safety valves that are installed on each circuit, both on the evaporator and on the condenser.
The purpose of the valves is to release the refrigerant inside the refrigerant circuit in the event of certain malfunctions.
WARNING
The unit is designed for indoor installation.
Damage may be caused by inhaling the refrigerant gas. Avoid the release of the refrigerant into the atmosphere.
The safety valves must be connected to the outdoor environment. The installer is responsible for connecting the
safety valves to the drainage pipes and for their correct dimensioning.
Check for adequate air circulation around the machine.
3” 83 mm
4” 107 mm
5” 134 mm
6” 162 mm
>
5mm
For 3” - 6” piping
Use paddle b = 29 mm
Adjusting the flow switch’s
trigger sensitivity
Содержание
- Water cooled screw chillers 1
- Contents 2
- List of figures 3
- List of tables 3
- Important 4
- Warning 4
- Assistance 6
- Caution 6
- General information 6
- Important 6
- Receiving the machine 6
- Spare parts 6
- Warnings for the operator 6
- Checks 7
- Important information on the refrigerant used 7
- Purpose of this manual 7
- D kimwc00412 09en 8 88 8
- Nomenclature eww d 360 ej yn n a 8
- Technical data ewwd ejynn 9
- Technical specifications 9
- Technical data ewwd ejynn a 14
- Technical data ewld ejynn oplr 17
- Ewwd ejynn ewwd ejynn a ewld ejynn 22
- Sound pressure levels 22
- Ewwd ejynn ewwd ejynn a ewld ejynn with sound proof cabinet 23
- Ewwd ejynn 24
- Ewwd ejynn a 24
- Sound pressure correction factors for different distances 24
- Attention 25
- Operating limits 25
- Operation 25
- Storage 25
- Envelope 26
- Ewwd ejynn ewwd ejynn a 26
- Elwd ejynn 27
- Envelope 27
- Handling and lifting 28
- Mechanical installation 28
- Responsibility 28
- Safety 28
- Shipping 28
- Warning 28
- Positioning and assembly 29
- Warning 29
- Minimum space requirements 30
- Sound protection 30
- Ventilation 30
- Water piping 30
- Attention 31
- Water treatment 31
- Evaporator and exchangers anti freeze protection 32
- Installing the flow switch 32
- Refrigerating circuit safety valves 32
- Table 1 acceptable water quality limits 32
- Warning 32
- D kimwc00412 09en 33 88 33
- Ewwd340 c18ejynn ewld320 c17ejynn oplr 33
- Pressure drop kpa 33
- Pressure drops evaporator 33
- Water flow l s 33
- Condenser 1 pass 4 8 c ewwd340 c18ejynn 34
- Condenser 2 passes 9 15 c ewwd340 c18ejynn 35
- Evaporator ewwd360 c12ejynn a 36
- Water flow l s 36
- Condenser 2passes 4 8 c ewwd360 c12ejynn a 37
- Water flow l s 37
- Pressure drops condenser 1 pass 4 8 c ewwd340 c18ejynn 38
- Total heat recovery option on request 38
- Condenser 2passes 9 15 c ewwd340 c18ejynn 39
- Partial heat recovery option on request 40
- Pressure drops ewwd340 c18ejynn 40
- Caution 41
- Electrical installation 41
- General specifications 41
- Electrical data 42
- D kimwc00412 09en 43 88 43
- Alarm relays electrical wiring 44
- Double setpoint electrical wiring 44
- Electrical components 44
- Electrical wiring 44
- External water setpoint reset electrical wiring optional 44
- Oil heaters 44
- Unit on off remote control electrical wiring 44
- Water pump control 44
- Additional expansion for heat recovery 45
- Common analog signal 4 20ma 45
- Current limit enable 45
- D kimwc00412 09en 45 88 45
- Double set point 45
- Evaporator flow switch 45
- External alarm 45
- General alarm 45
- Heat reccovey device switch 45
- Load current limit 4 20 ma 45
- Load limitation the load can be varied by means of a 4 20 ma external signal from a bms the signal cable must be directly connected to terminals 36 and 37 of the m3 terminal board the signal cable must be of the shielded type and must not be laid in the vicinity of the power cables so as not to induce interference with the electronic controller current limitation the machine s load can be varied by means of a 4 20 ma external signal from an external device in this case current control limits must be set on the microprocessor so that the microprocessor transmits the value of the measured current and limits it the signal cable must be directly connected to terminals 36 and 37 of the m3 terminal board the signal cable must be of the shielded type and must not be laid in the vicinity of the power cables so as not to induce interference with the electronic controller a digital input allows to enable the current limitation at the desired time connect the enabling switch or the timer clean co 45
- Pump 1 alarm 45
- Pump 1 enable 45
- Pump 2 alarm 45
- Pump 2 enable 45
- Remote on off 45
- Setpoint override 4 20 ma 45
- Unit basic connections additional expansion for pump control additional expansion for external water setpoint reset and unit limitation 45
- Unit current 4 20 ma 45
- Unit limitation electrical wiring optional 45
- Guidelines for remote condenser application 46
- Refrigerant piping design 46
- Determining equivalent line length 47
- 1 1 8 1 1 8 1 3 8 1 3 8 1 3 8 1 3 8 1 3 8 1 5 8 1 5 8 48
- 1 1 8 1 3 8 1 3 8 1 3 8 1 3 8 1 3 8 1 5 8 1 5 8 1 5 8 48
- 1 1 8 1 3 8 1 3 8 1 3 8 1 3 8 1 5 8 1 5 8 1 5 8 1 5 8 48
- 1 1 8 1 3 8 1 3 8 1 3 8 1 5 8 1 5 8 1 5 8 2 1 8 2 1 8 48
- Discharge hot gas line sizing 48
- Kw 5 10 15 20 25 30 40 50 60 48
- Liquid line sizing 48
- Table 2 equivalent lengths in meters 48
- Table 3 liquid line sizes 48
- Oil charge 49
- Table 4 discharge line sizes 49
- Description of the machine 50
- Description of the refrigeration cycle 50
- Description of the refrigeration cycle with partial heat recovery 50
- Operation 50
- Operator s responsibilities 50
- Controlling the partial recovery circuit and installation recommendations 51
- C h e c k v a l v e 52
- C o m p r e s s o r 52
- C o n d e n s e r 52
- E v a p o r a t o r 52
- E x p a n s io n v a l v e 52
- F l a r e v a l v e 52
- Fig 10 refrigeration cycle of the ewwd ejynn single circuit 52
- L e g e n d 52
- O il s e p a r a t o r 52
- S a f e t y v a l v e 52
- S h u t o f f v a l v e 52
- S ig h t g l a s s 52
- S o l e n o id v a l v e 52
- W a y a n g l e v a l v e w it h g a s c h a r g e p o r t 52
- C h e c k v a l v e 53
- C o m p r e s s o r 53
- C o n d e n s e r 53
- E v a p o r a t o r 53
- E x p a n s io n v a l v e 53
- F l a r e v a l v e 53
- Fig 11 refrigeration cycle of the ewld ejynn single circuit 53
- L e g e n d 53
- O il s e p a r a t o r 53
- S a f e t y v a l v e 53
- S h u t o f f v a l v e 53
- S ig h t g l a s s 53
- S o l e n o id v a l v e 53
- W a y a n g l e v a l v e w it h g a s c h a r g e p o r t 53
- C h e c k v a l v e 54
- C o m p r e s s o r 54
- C o n d e n s e r 54
- D kimwc00412 09en 54 88 54
- E v a p o r a t o r 54
- E x p a n s io n v a l v e 54
- F l a r e v a l v e 54
- Fig 12 refrigeration cycle of the ewld ejynn oplr single circuit 54
- L e g e n d 54
- O il s e p a r a t o r 54
- S a f e t y v a l v e 54
- S h u t o f f v a l v e 54
- S ig h t g l a s s 54
- S o l e n o id v a l v e 54
- W a y a n g l e v a l v e w it h g a s c h a r g e p o r t 54
- Check valve 55
- Compressor 55
- Condenser 55
- D kimwc00412 09en 55 88 55
- Evaporator 55
- Expansion valve 55
- Fig 13 refrigeration cycle of the ewwd single circuit total heat recovery 55
- Flare valve 55
- Legend 55
- Oil separator 55
- Safety valve 55
- Shut off valve 55
- Sight glass 55
- Solenoid valve 55
- Way angle valve with gas charge port 55
- C h e c k v a l v e 56
- C o m p r e s s o r 56
- C o n d e n s e r 56
- D kimwc00412 09en 56 88 56
- E v a p o r a t o r 56
- E x p a n s io n v a l v e 56
- F l a r e v a l v e 56
- Fig 14 refrigeration cycle of the ewwd ejynn a single circuit fig 14 refrigeration cycle of the ewwd ejynn a single circuit 56
- L e g e n d 56
- O il s e p a r a t o r 56
- S a f e t y v a l v e 56
- S h u t o f f v a l v e 56
- S ig h t g l a s s 56
- S o l e n o id v a l v e 56
- W a y a n g l e v a l v e w it h g a s c h a r g e p o r t 56
- Check valve 57
- Compressor 57
- Condenser 57
- D kimwc00412 09en 57 88 57
- Evaporator 57
- Expansion valve 57
- Fig 5 refrigeration cycle of the ewwd ejynn double circuits 57
- Flare valve 57
- Legend 57
- Oil separator 57
- Safety valve 57
- Shut off valve 57
- Sight glass 57
- Solenoid valve 57
- Way angle valve with gas charge port 57
- C h e c k v a l v e 58
- C o m p r e s s o r 58
- C o n d e n s e r 58
- D kimwc00412 09en 58 88 58
- E v a p o r a t o r 58
- E x p a n s io n v a l v e 58
- F l a r e v a l v e 58
- Fig 16 refrigeration cycle of the ewld ejynn double circuits 58
- L e g e n d 58
- O il s e p a r a t o r 58
- S a f e t y v a l v e 58
- S h u t o f f v a l v e 58
- S ig h t g l a s s 58
- S o l e n o id v a l v e 58
- W a y a n g l e v a l v e w it h g a s c h a r g e p o r t 58
- C h e c k v a lv e 59
- C o m p r e s s o r 59
- C o n d e n s e r 59
- D kimwc00412 09en 59 88 59
- E v a p o r a t o r 59
- E x p a n s io n v a lv e 59
- F la r e v a lv e 59
- Fig 17 refrigeration cycle of the ewld ejynn oplr double circuits 59
- Le g e n d 59
- O il s e p a r a t o r 59
- S a f e t y v a lv e 59
- S h u t o f f v a lv e 59
- S ig h t g la s s 59
- S o le n o id v a lv e 59
- W a y a n g le v a lv e w ith g a s c h a r g e p o r t 59
- Check valve 60
- Compressor 60
- Condenser 60
- D kimwc00412 09en 60 88 60
- Evaporator 60
- Expansion valve 60
- Fig 18 refrigeration cycle of the ewwd double circuits total heat recovery fig 18 refrigeration cycle of the ewwd double circuits total heat recovery 60
- Flare valve 60
- Legend 60
- Oil separator 60
- Safety valve 60
- Shut off valve 60
- Sight glass 60
- Solenoid valve 60
- Way angle valve with gas charge port 60
- Check valve 61
- Compressor 61
- Condenser 61
- D kimwc00412 09en 61 88 61
- Evaporator 61
- Expansion valve 61
- Fig 19 refrigeration cycle of the ewwd ejynn a double circuits 61
- Flare valve 61
- Legend 61
- Oil separator 61
- Safety valve 61
- Shut off valve 61
- Sight glass 61
- Solenoid valve 61
- Way angle valve with gas charge port 61
- Check valve 62
- Compressor 62
- Condenser 62
- D kimwc00412 09en 62 88 62
- Evaporator 62
- Expansion valve 62
- Fig 0 refrigeration cycle of the ewwd ejynn trial circuits 62
- Flare valve 62
- Legend 62
- Oil separator 62
- Safety valve 62
- Shut off valve 62
- Sight glass 62
- Solenoid valve 62
- Way angle valve with gas charge port 62
- Check valve 63
- Compressor 63
- Condenser 63
- D kimwc00412 09en 63 88 63
- Evaporator 63
- Expansion valve 63
- Fig 21 refrigeration cycle of the ewld ejynn trial circuits 63
- Flare valve 63
- Legend 63
- Oil separator 63
- Safety valve 63
- Shut off valve 63
- Sight glass 63
- Solenoid valve 63
- W ay angle valve w ith gas charge port 63
- Check valve 64
- Compressor 64
- Condenser 64
- D kimwc00412 09en 64 88 64
- Evaporator 64
- Expansion valve 64
- Fig 22 refrigeration cycle of the ewld ejynn oplr trial circuits 64
- Flare valve 64
- Legend 64
- Oil separator 64
- Safety valve 64
- Shut off valve 64
- Sight glass 64
- Solenoid valve 64
- Way angle valve with gas charge port 64
- Check valve 65
- Compressor 65
- Condenser 65
- D kimwc00412 09en 65 88 65
- Evaporator 65
- Expansion valve 65
- Fig 23 refrigeration cycle of the ewwd trial circuits total heat recovery fig 23 refrigeration cycle of the ewwd trial circuits total heat recovery 65
- Flare valve 65
- Legend 65
- Oil separator 65
- Safety valve 65
- Shut off valve 65
- Sight glass 65
- Solenoid valve 65
- Way angle valve with gas charge port 65
- Compression process 66
- Compressor 66
- Compression 67
- D kimwc00412 09en 67 88 67
- Discharge 67
- E 2 suction 67
- Fig 25 compression process 67
- Attention 69
- Caution 69
- General 69
- Important 69
- Pre startup checks 69
- Warning 69
- 29 1 100 387 387 392 x 70
- Attention 70
- Caution 70
- Electrical power supply 70
- Emergency stop 70
- Oil heaters power supply 70
- Unbalance in power supply voltage 70
- Units with external water pump 70
- _____ 100 max x vaverage vaverage v 70
- Important 71
- Startup procedure 71
- Table 5 typical operating conditions with compressors at 100 71
- Turning on the machine 71
- Important 72
- Seasonal shutdown 72
- Starting up after seasonal shutdown 72
- Attention 73
- Compressor maintenance 73
- General 73
- Important 73
- Lubrication 73
- System maintenance 73
- Warning 73
- 7 safety valves check that the lid and seal have not been tampered with check that the discharge socket of the safety valves is not obstructed by any objects rust or ice check the manufacturing date shown on the safety valve replace the valve every 5 years and make sure it is compliant with the current regulations in terms of the installation of the unit 8 clean the pipes of the exchanger mechanically and chemically if the following occur drop in the condenser water capacity drop in the differential temperature between inlet and outlet water high temperature condensation 75
- Analyse compressor oil acidity note 6 75
- Analyse compressor vibrations 75
- Analysis of water note 5 75
- Attention 75
- Change oil replace oil filter and filter dryer verify at regular intervals 75
- Check for any refrigerant leakage 75
- Check safety valves note 7 75
- Clean and paint where necessary 75
- Clean inside the electrical control board 75
- Clean the exchangers note 8 75
- D kimwc00412 09en 75 88 75
- Ensure proper water flow through the evaporator during the entire servicing period interrupting the water flow during this procedure would cause the evaporator to freeze with consequent breakage of internal piping 75
- It is strongly advised that the filter dryer cartridges be replaced in the event of a considerable pressure drop across the filter or if bubbles are observed through the liquid sight glass while the subcooling value is within the accepted limits replacement of the cartridges is advised when the pressure drop across the filter reaches 50 kpa with the compressor under full load the cartridges must also be replaced when the humidity indicator in the liquid sight glass changes colour and shows excessive humidity or when the periodic oil test reveals the presence of acidity tan is too high 75
- Measure compressor motor insulation using the megger 75
- No action between 0 0 and 0 9 replace anti acid filters and re check after 1000 running hours continue to replace filters until the tan is lower than 0 0 75
- Note 2 75
- Notes 1 monthly activities include alle the weekly ones 2 the annual or early season activities include all weekly and monthly activities 3 machine operating values should be read on a daily basis thus keeping high observation standards 4 replace the oil filter when the pressure drop across it reaches 2 bar 5 check for any dissolved metals 6 tan total acid number 75
- Procedure to replace the filter dryer cartridge 75
- Reading of operating data note 3 75
- Replacement of filter dryer 75
- Routine maintenance 75
- Verification of control sequence 75
- Verification of thermal insulation integrity 75
- Verify contactor wear replace if necessary 75
- Verify filter dryer pressure drop 75
- Verify oil filter pressure drop note 4 75
- Verify operation of compressor and electrical resistance 75
- Verify refrigerant flow using the liquid sight glass sight glass full 75
- Verify that all electrical terminals are tight tighten if necessary 75
- Visual inspection of components for any signs of overheating 75
- Visual inspection of machine for any damage and or loosening 75
- Attention 76
- Replacement of the oil filter 76
- Warning 76
- Attention 77
- Fr4200 compressor 77
- Oil filter replacement procedure procedure to replace oil filter 77
- Attention 78
- Refrigerant charge 78
- Refrigerant filling procedure 78
- Warning 78
- Standard checks 79
- Temperature and pressure sensors 79
- Refrigerant side measurements 80
- Test sheet 80
- Water side measurements 80
- Compressor 1 _____ a _____ a _____ a compressor 2 _____ a _____ a _____ a compressor 3 _____ a _____ a _____ a 81
- Compressors current phases 81
- D kimwc00412 09en 81 88 81
- Electrical measurements 81
- _____ 100 max x vaverage vaverage v 81
- Service and limited warranty 82
- Obligatory routine checks and starting up apparatuses under pressure 83
- Disposal 84
- Important information regarding the refrigerant used 84
- Daikin europe n v 88
- Ewwd 340 c18 ejynn ewwd 360 c12 ejynn a ewld 320 c17 ejynn 88
- Water cooled screw chillers 88
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