![Daikin EWWD600DJYNN [38/58] Compressor](/img/pdf.png)
Daikin EWWD600DJYNN [38/58] Compressor
D - KIMWC00211-09EN - 38/58
Description of the refrigeration cycle with partial heat recovery
The lowtemperature refrigerant gas from the evaporator is drawn by the compressor through the electric motor, which is
cooled by the refrigerant. It is subsequently compressed and during this process the refrigerant mixes with the oil from
the oil separator.
The highpressure oilrefrigerant mixture is introduced within the highefficiency centrifugaltype oil separator which
separates it. The oil depositing on the bottom of the separator through pressure difference is sent back to the
compressor while the refrigerant that has been separated from the oil il sent to the partial recovery exchanger, where it
dissipates the heat from postoverheating cooling, warming the water which travels through the exchanger. On leaving the
exchanger the refrigerant fluid enters the condenser where it is condensed.
The highpressure oilrefrigerant mixture is introduced into the centrifugetype highefficiency oil separator, where the oil is
separated from the refrigerant. The oil accumulated on the bottom of the separator is forced by the pressure difference
back into the compressor while the oilfree refrigerant is sent to the condenser. The upper part of the condenser has
cooling tubes through which about 10% of the heat rejection of the unit is recovered.
These condensers, with partial heat recovery tubes, have crowns with special couplings by which they can be connected
to the hot water pipes. When partial recovery is activated, condenser performance is improved since the condenser
temperature is lowered further in as much as the surface dedicated to heat discharge is greater.
After passing through the cooling tubes, the gas starts to condense in the central part of the condenser.
The condensed fluid at saturation temperature passes through the subcooling section where it looses even more heat,
increasing the efficiency of the cycle. The subcooled fluid flows through the highefficiency filter dryer and then reaches
the expansion element (expansion valve) through which a fall in pressure starts off the expansion process resulting in the
vaporisation of part of the refrigerant liquid.
The result at this point is a lowpressure and lowtemperature liquidgas mixture entering the evaporator, where it takes the
heat required for vaporisation.
When the refrigerant liquidvapour is uniformly distributed in the direct expansion evaporator tubes, heat is exchanged
with the cooling water, thus reducing the temperature until complete evaporation, followed by superheating.
Once it has reached the superheatedvapour state, the refrigerant leaves the evaporator and is once again taken into the
compressor to repeat the cycle.
Controlling the partial recovery circuit and installation recommendations
The partial heat recovery system is not managed and/or controlled by the machine. The installer should follow the
suggestions below for best system performance and reliability:
1) Install a mechanical filter on the heat exchanger inlet pipe.
2) Install shutoff valves to isolate the heat exchanger from the water system during periods of inactivity or
system maintenance.
3) Install a drain valve that allows the heat exchanger to be emptied in the even that air temperature is
expected to fall below 0°C during periods of inactivity of the machine.
4) Install flexible antivibration joints on the heat recovery water inlet and outlet piping, so that transmission
of vibrations, and therefore of noise, to the water system is kept as low as possible.
5)
Do not load exchanger joints with the weight of the heat recovery piping. The water joints of the
exchangers are not designed to support the weight of the piping.
6) Should heat recovery water temperature be lower than ambient temperature, it is advised to switch off
the heat recovery water pump 3 minutes after having switched off the last compressor.
Compressor
The singlescrew compressor is of the semihermetic type with an asyncronous threephase, twopole motor which is
directly splined on the main shaft. The suction gas from the evaporator cools the electric motor before entering the
suction ports. There are temperature sensors inside the electric motor which are completely covered by the coil winding
and constantly monitor motor temperature. Should the coil winding temperature become very high (120°C), a special
external device connected to the sensors and to the electronic controller will deactivate the corresponding compressor.
There are only two moving rotating parts and there are no other parts in the compressor with an eccentric and/or
alternating movement.
The basic components are therefore only the main rotor and the satellites that carry out the compression process,
meshing perfectly together.
Compression sealing is done thanks to a suitably shaped special composite material that is interposed between the main
screw and the satellite. The main shaft on which the main rotor is splined is supported by 2 ball bearings. The system
made up in this way is both statically and dynamically balanced before assembly.
Содержание
- Important 2
- Warning 2
- Contents 4
- D kimwc00211 09en 4 58 4
- Assistance 6
- Attention 6
- Checks 6
- D kimwc00211 09en 6 58 6
- General information 6
- Important 6
- Receiving the machine 6
- Spare parts 6
- Warnings for the operator 6
- 1300 the quantity of refrigerant used is indicated on the identity plate with the name of the unit routine inspections may be necessary pursuant to local and or european laws to check on possible refrigerant leakage for more detailed information contact your local dealer 7
- A before accepting the machine please verify every single component in the consignment check for any damage b in the event that the machine has been damaged do not remove the damaged material a set of photographs are helpful in ascertaining responsibility c immediately report the extent of the damage to the transportation company and request that they inspect the machine d immediately report the extent of the damage to the manufacturer representative so that arrangements can be made for the required repairs in no case must the damage be repaired before the machine has been inspected by the representative of the transportation company 7
- D kimwc00211 09en 7 58 7
- Gwp global warming potential 7
- Important information on the refrigerant used 7
- Nomenclature 7
- Purpose of this manual 7
- The purpose of this manual is to allow the installer and the qualified operator to carry out all required operations in order to ensure proper installation and maintenance of the machine without any risk to people animals and or objects this manual is an important supporting document for qualified personnel but it is not intended to replace such personnel all activities must be carried out in compliance with local laws and regulations 7
- This product contains fluorate gases which have a greenhouse effect and which are covered by the kyoto protocol do not release such gases into the atmosphere type of refrigerant r134a gwp valu 7
- 12 15 17 20 8
- 41 62 77 39 8
- 66 43 52 63 8
- 9 12 13 16 8
- D kimwc00211 09en 8 58 8
- Technical data ewwd170 600djynn 8
- Technical specifications 8
- 19 21 23 26 9
- 420 460 500 600 9
- 71 54 54 67 9
- D kimwc00211 09en 9 58 9
- 230 280 320 380 10
- D kimwc00211 09en 10 58 10
- Technical data ewwd190 650djynn a 10
- 460 500 550 650 11
- D kimwc00211 09en 11 58 11
- 190 240 280 320 12
- D kimwc00211 09en 12 58 12
- Technical data ewld160 550djynn ewld160 550djynn oplr 12
- 18 20 22 25 13
- 21 29 35 42 13
- 380 420 480 550 13
- 90 90 90 90 13
- D kimwc00211 09en 13 58 13
- R134a r134a r134a r134a r134a 13
- D kimwc00211 09en 14 58 14
- Sound pressure level correction factor ewwd djynn ewwd djynn a for different distances 14
- Sound pressure levels ewwd djynn ewwd djynn a 14
- Sound pressure levels ewwd djynn ewwd djynn a with sound proof cabinet 14
- D kimwc00211 09en 15 58 15
- Ewld djynn oplr ewld djynn oplr 15
- Fig 1 operating limits 15
- Glycol 15
- Operating limits ewwd djynn ewwd djynn a 15
- Operating range ecoplus 15
- Operation with 15
- D kimwc00211 09en 16 58 16
- Mechanical installation 16
- Moving and lifting 16
- Responsibility 16
- Safety 16
- Shipping 16
- Warning 16
- D kimwc00211 09en 17 58 17
- Fig 2 lifting the unit 17
- Positioning and assembly 17
- Warning 17
- D kimwc00211 09en 18 58 18
- Fig 3 minimum clearance requirements for machine maintenance 18
- Minimum space requirements 18
- Sound protection 18
- Ventilation 18
- Water piping 18
- D kimwc00211 09en 19 58 19
- Fig 4 water piping connections for evaporator fig 5 water piping connection for heat recovery exchangers 19
- Table 1 acceptable water quality limits 19
- Water treatment 19
- D kimwc00211 09en 20 58 20
- Evaporator and exchangers antifreeze protection 20
- Fig 6 adjusting the safety flow switch 20
- Installing the flow switch 20
- Refrigerating circuit safety valves 20
- Evaporator pressure drops 21
- Pressure drop kpa 21
- Water flow l s 21
- Condenser pressure drops 22
- Se 060 073 080 se 22
- Se 120 133 146 165 se 22
- Xe 100 se 073 080 xe 22
- Ecoplus 050 ecoplus 060 ecoplus 073 ecoplus 101 ecoplus 110 ecoplus 120 ecoplus 133 ecoplus 133 23
- Partial heat recovery pressure drops 23
- Perdita di carico kpa 23
- Portata acqua l s 23
- D kimwc00211 09en 24 58 24
- Fig 7 condenser located with no elevation difference 24
- Guidelines for remote condenser application 24
- Fig 8 condenser located above chiller unit 25
- Fig 9 condenser located below chiller unit fig 9 condenser located below chiller unit 25
- Table 2 equivalent lengths in meters 26
- D kimwc00211 09en 27 58 27
- Discharge hot gas line sizing 27
- Oil charge 27
- Table 3 liquid line sizes 27
- Table 4 discharge line sizes 27
- Caution 28
- Electrical installation 28
- General specifications 28
- D kimwc00211 09en 29 58 29
- Table 5 electrical data ewwd djynn 29
- D kimwc00211 09en 30 58 30
- Table 6 electrical data ewwd djynn a 30
- D kimwc00211 09en 31 58 31
- Table 7 electrical data ewld djynn ewld djynn oplr 31
- Alarm relays electrical wiring 32
- D kimwc00211 09en 32 58 32
- Double setpoint electrical wiring 32
- Electrical components 32
- Electrical heaters 32
- Electrical wiring 32
- External water setpoint reset electrical wiring optional 32
- Unit on off remote control electrical wiring 32
- Water pump control 32
- D kimwc00211 09en 33 58 33
- Fig 10 user connection to the interface m3 terminal board 33
- Unit limitation electrical wiring optional 33
- D kimwc00211 09en 34 58 34
- Description of the machine 34
- Description of the refrigeration cycle 34
- Operation 34
- Operator s responsibilities 34
- Fig 11 refrigeration cycle ewwd djynn ewwd djynn a 35
- Fig 12 refrigeration cycle ewwd djynn ewwd jynn a partial heat recovery 36
- Fig 13 refrigeration cycle ewld djynn ewld djynn oplr 37
- Compressor 38
- Controlling the partial recovery circuit and installation recommendations 38
- D kimwc00211 09en 38 58 38
- Description of the refrigeration cycle with partial heat recovery 38
- Compression process 39
- D kimwc00211 09en 39 58 39
- Fig 14 picture of fr3200 compressor 39
- D kimwc00211 09en 40 58 40
- Fig 15 compression process 40
- D kimwc00211 09en 41 58 41
- Fig 16 refrigeration capacity control mechanism of compressor fr3200 41
- D kimwc00211 09en 42 58 42
- Fig 17 capacity control mechanism 42
- Caution 43
- D kimwc00211 09en 43 58 43
- General 43
- Important 43
- Prestartup checks 43
- 29 1 100 387 44
- Caution 44
- Electrical heaters power supply 44
- Electrical power supply 44
- Emergency stop 44
- Unbalance in power supply voltage 44
- Units with external water pump 44
- Important 45
- Startup procedure 45
- Table 8 typical operating conditions with compressors at 100 45
- Turning on the machine 45
- D kimwc00211 09en 46 58 46
- Important 46
- Seasonal shutdown 46
- Starting up after seasonal shutdown 46
- Compressor maintenance 47
- D kimwc00211 09en 47 58 47
- General 47
- Important 47
- Lubrication 47
- System maintenance 47
- Warning 47
- D kimwc00211 09en 48 58 48
- Fig 18 installation of control devices for fr 3200 compressor 48
- Programme weekly monthly note 1 annual note 2 48
- Routine maintenance 48
- Table 9 routine maintenance programme 48
- Attention 49
- D kimwc00211 09en 49 58 49
- Important 49
- Procedure to replace the filter dryer cartridge 49
- Replacement of filter dryer 49
- Attention 50
- D kimwc00211 09en 50 58 50
- Fr3200 compressor 50
- Procedure to replace oil filter 50
- Replacement of the oil filter 50
- Attention 51
- D kimwc00211 09en 51 58 51
- Procedure to replenish refrigerant 51
- Refrigerant charge 51
- Warning 51
- D kimwc00211 09en 52 58 52
- Standard checks 52
- Temperature and pressure sensors 52
- Avg average 53
- D kimwc00211 09en 53 58 53
- Electrical measurements 53
- Refrigerant side measurements 53
- Test sheet 53
- Water side measurements 53
- D kimwc00211 09en 54 58 54
- Service and limited warranty 54
- D kimwc00211 09en 55 58 55
- Obligatory routine checks and starting up apparatuses under pressure 55
- D kimwc00211 09en 56 58 56
- Disposal 56
- Important information regarding the refrigerant used 56
- D kimwc00211 09en 58 58 58
- Daikin europe n v daikin europe n v daikin europe n v daikin europe n v 58
- Ewwd170 600djynn ewwd190 650djynn a ewld160 550djynn 58
- Water cooled screw chillers 58
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