Related Manuals for Daikin EWYD-BZ Series
Summary of Contents for Daikin EWYD-BZ Series
- Page 1 EWYD-BZ Inverter air to water heat pumps Installation, maintenance & operation manual EWYD 250-580BZSS EWYD 250-570BZSL Date 50Hz - Refrigerant: R-134a Supersedes D–EIMHP00508-16EN...
- Page 2 This Manual is a technical aid and does not represent a binding offer for Daikin. Daikin has drawn up this Manual to the best of its knowledge. The content cannot be held as explicitly or implicitly guaranteed as complete, precise or reliable.
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Page 3: Table Of Contents
Index General information ................................5 Purpose of this manual..............................5 Receiving the machine ..............................5 Checks ................................... 5 Nomenclature ................................. 6 Technical Specifications ..............................7 Storage..................................15 Operation..................................15 Mechanical installation ..............................17 Shipping ..................................17 Responsibility ................................17 Safety ................................... 17 Moving and lifting................................ - Page 4 Temperature and pressure sensors..........................54 Test sheet ..................................55 Water side measurements............................55 Refrigerant side measurements ........................... 55 Electrical measurements .............................. 55 Service and limited warranty............................56 Periodic obligatory checks and starting up of appliances under pressure ............... 57 Important information regarding the refrigerant used ....................58 Disposal..................................
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Page 5: General Information
CONSIDERED ESSENTIAL DOCUMENTS AND AS A PART OF THIS MANUAL In case of any discrepancy between this manual and the equipment’s document refer to on board documents. For any doubt ask Daikin or authorized centers Purpose of this manual The purpose of this manual is to allow the installer and the qualified operator to carry out required operations in order to ensure proper installation and maintenance of the machine, without any risk to people, animals and/or objects. -
Page 6: Nomenclature
Nomenclature E W Y D 9 10 11 Machine type EWA = Air-cooled chiller, cooling only EWY = Air-cooled chiller, heat pump = Remote condenser chiller = Air cooled condensing unit EWW = Water-cooled chiller, cooling only EWC = Air-cooled chiller, cooling only with centrifugal fan = Air-cooled chiller, cooling only with heat recovery Refrigerant = R-134a... -
Page 7: Technical Specifications
Technical Specifications EWYD~BZSS TECHNICAL SPECIFICATIONS Cooling Capacity (1) (2) Heating Type Stepless Capacity control Minimum capacity Cooling 90.3 Unit power input (1) (2) Heating 90.4 EER (1) 2.81 2.74 2.69 2.79 2.74 COP (2) 2.98 2.99 3.03 2.84 2.80 ESEER 4.05 4.04 4.01... - Page 8 EWYD~BZSS TECHNICAL SPECIFICATIONS Cooling Capacity (1) Heating Type Stepless Capacity control Minimum capacity Cooling Unit power input (1) Heating EER (1) 2.73 2.68 2.72 2.68 2.83 COP (2) 2.87 2.90 2.85 2.81 2.90 ESEER 4.02 3.94 4.03 4.01 4.31 IPLV 4.71 4.67 4.73...
- Page 9 EWYD~BZSS TECHNICAL SPECIFICATIONS Cooling Capacity (1) Heating Type Stepless Capacity control Minimum capacity Cooling Unit power input (1) Heating EER (1) 2.83 2.81 2.71 COP (2) 3.02 3.04 3.00 ESEER 4.13 4.13 4.05 IPLV 4.89 4.85 4.78 Colour Ivory White Casing Material Galvanized and painted steel sheet...
- Page 10 EWYD~BZSS ELECTRICAL SPECIFICATIONS Phase Frequency Power Supply Voltage Minimum -10% -10% -10% -10% -10% Voltage Tolerance Maximum +10% +10% +10% +10% +10% Maximum starting current Nominal running current cooling Unit Maximum running current Maximum current for wires sizing Nominal running current in cooling Fans Nominal running current in heating Phase...
- Page 11 EWYD~BZSL TECHNICAL SPECIFICATIONS Cooling Capacity (1) (2) Heating Type Stepless Capacity control Minimum capacity Cooling 88.5 Unit power input (1) (2) Heating 90.4 EER (1) 2.80 2.70 2.66 2.79 2.72 COP (2) 2.98 2.99 3.03 2.84 2.80 ESEER 4.18 4.16 4.11 4.29 4.18...
- Page 12 EWYD~BZSL TECHNICAL SPECIFICATIONS Cooling Capacity (1) (2) Heating Type Stepless Capacity control Minimum capacity Cooling Unit power input (1) (2) Heating EER (1) 2.68 2.62 2.71 2.64 2.87 COP (2) 2.87 2.90 2.85 2.81 2.90 ESEER 4.16 4.13 4.19 4.14 4.31 IPLV 4.87...
- Page 13 EWYD~BZSL TECHNICAL SPECIFICATIONS Cooling Capacity (1) Heating Type Stepless Capacity control Minimum capacity Cooling Unit power input (1) Heating EER (1) 2.83 2.79 2.65 COP (2) 3.02 3.04 3.00 ESEER 4.29 4.23 4.10 IPLV 5.01 4.96 4.83 Colour Ivory White Casing Material Galvanized and painted steel sheet...
- Page 14 ELECTRICAL SPECIFICATIONS EWYD~BZSL Phase Frequency Power Supply Voltage Minimum -10% -10% -10% -10% -10% Voltage Tolerance Maximum +10% +10% +10% +10% +10% Maximum starting current Nominal running current cooling Unit Nominal running current heating Maximum running current Maximum current for wires sizing Nominal running current in cooling Fans Nominal running current in heating...
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Page 15: Storage
Operating limits Storage The environmental conditions must be within the following limits: Minimum ambient temperature -20°C Maximum ambient temperature 57°C Maximum R.H. 95% not condensing ATTENTION Storing below the minimum temperature mentioned above may cause damage to components such as the electronic controller and its LCD display. -
Page 16: Figure 1 - Operating Limits In Cooling Mode - Ewyd~Bzss / Ewyd~Bzsl
Figure 1 - Operating limits in cooling mode - EWYD~BZSS / EWYD~BZSL Figure 2 - Operating limits in heating mode - EWYD~BZSS / EWYD~BZSL D-EIMHP00508-16EN - 16/64... -
Page 17: Mechanical Installation
Mechanical installation Shipping The stability and the absence of any kind of deformation of the unit during shipping must be ensured. If the machine is shipped with a wooden cross-plank on its base, this cross-plank must only be removed after the final destination has been reached. -
Page 18: Positioning And Assembly
Procedure for extracting the machine from the container. Container Kit Optional Figure 3 - Lifting the unit The number and the location of lifting points changes from model to model. This picture is for reference only. Lifting tools (bars, ropes, etc) are not supplied. WARNING Both the lifting ropes and the spacing bar and/or scales must be strong enough to support the machine safely. -
Page 19: Minimum Space Requirements
When two or more machines are positioned side by side, a distance of at least 3600 mm between the respective condenser banks is recommended. For further solutions, please consult Daikin technicians. D-EIMHP00508-16EN - 19/64... -
Page 20: Sound Protection
Figure 5 - Minimum recommended installation clearances Distances shown in previous figures have not be considered a warranty for good installation; particular conditions (like venturi effects due to wind, very tall buildings, etc.) may cause air recirculation so affecting unit performances. It is a responsibility of the installer to assure that the unit condenser is fed with fresh air in any condistions Sound protection When sound levels require special control, great care must be exercised to isolate the machine from its base by... -
Page 21: Figure 6 - Water Piping Connection For Evaporator
9 The heat recovery device must be emptied of water during the winter season, unless an ethylene glycol mixture in appropriate percentage is added to the water circuit. 10 If the machine is intended to replace another, the entire water system must be emptied and cleaned before the new unit is installed. -
Page 22: Water Treatment
ATTENTION Install a mechanical filter on the inlet to each heat exchanger. Failure to install a mechanical filter allows solid particles and/or welding slag to enter the exchanger. Installation of a filter having a mesh size not exceeding 0,5 – 1 mm is advised. -
Page 23: Hydronic Kit (Optional)
Adjusting the flow switch’s trigger sensitivity 3” 83 mm 4” 107 mm 5” 134 mm 6” 162 mm 5 mm For 3” Use palette b = 29 mm Figure 8 - Adjusting the safety flow switch Hydronic kit (optional) The optional hydronic kit intended for use with this series of machines (except 072.2÷079.2 LN units) includes either a single in-line pump or a twin in-line pump. -
Page 24: Figure 10 - Low Lift Water Pumps Kit (Option On Request) - Lift Diagrams
Figure 10 - Low lift water pumps kit (option on request) - Lift diagrams EWYD~BZSS / EWYD~BZSL with low lift single pump EWYD~ EWYD~ EWYD~ EWYD~ EWYD~ EWYD~ Label Label Label BZSS BZSL BZSS BZSL BZSS BZSL EWYD~BZSS / EWYD~BZSL with low lift twin pump EWYD~ EWYD~ EWYD~... -
Page 25: Figure 11 - High Lift Water Pumps Kit (Option On Request) - Lift Diagrams
Figure 11 - High lift water pumps kit (option on request) - Lift diagrams EWYD~BZSS / EWYD~BZSL with high lift single pump EWYD~ EWYD~ EWYD~ EWYD~ EWYD~ EWYD~ Label Label Label BZSS BZSL BZSS BZSL BZSS BZSL EWYD~BZSS / EWYD~BZSL with high lift twin pump EWYD~ EWYD~ EWYD~... -
Page 26: Figure 12 - Evaporator Pressure Drop
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 refrigerating circuit in the event of certain malfunctions. WARNING This unit is designed for installation outdoors. -
Page 27: Figure 13 - Partial Heat Recovery Pressure Drop
Figure 13 - Partial heat recovery pressure drop EWYD~ EWYD~ Circ #1 Circ #2 Circ #3 BZSS BZSL D-EIMHP00508-16EN - 27/64... -
Page 28: Electrical Installation
Electrical installation General specifications CAUTION All electrical connections to the machine must be carried out in compliance with laws and regulations in force. All installation, management and maintenance activities must be carried out by qualified personnel. Refer to the specific wiring diagram for the machine that you have purchased and which was sent with the unit. Should the wiring diagram not appear on the machine or should it have been lost, please contact your nearest manufacturer office, who will send you a copy. -
Page 29: Electrical Power Supply To The Pumps
Electrical power supply to the pumps On request, for versions where this is possible, a kit can be installed in the machine for fully-cabled, microprocessor- controlled pumping. No additional control is required in this case. Table 2 - Electrical data of optional pumps Single pump Motor power Current... -
Page 30: Alarm Relays - Electrical Wiring
Alarm relays – Electrical wiring The unit has a clean-contact digital output that changes state whenever an alarm occurs in one of the refrigerant circuits. Connect this signal to an external visual, sound alarm or to the BMS in order to monitor its operation. See the machine’s wiring diagram for wiring. -
Page 31: The Vfd And Related Problems
Figure 14 - User connection to the interface M3 terminal boards Unit basic connections Additional Additional expansion for Additional expansion for water expansion for pump control setpoint reset and Unit limitation Heat Recovery 401402407408409 410 426427 5 21 58 59 25 26 27 28 35 36 37 8 23... -
Page 32: The Operating Principle Of The Vfd
Figure 15 - Power absorbed by the compressor depending on the load The operating principle of the VFD The VFD (also known as an “inverter”) is an electronic power device designed to vary the speed of rotation of induction motors. The motors revolve at a practically fixed rpm speed which depends only on the frequency of the power supply (f) and on the number of poles (p), as per the following formula: ... -
Page 33: Figure 16 - Typical Diagram Of A Vfd
Figure 16 - Typical diagram of a VFD Figure 17 - Harmonics on the grid Since the rectifier bridge sees before it a direct current stage, the current taken is practically in phase with the voltage. However, the formula below no longer applies ... -
Page 34: Figure 18 - Harmonic Content With And Without Line Inductance
In a VFD without remedial devices, harmonic distortion can reach values of more than 100% (i.e. the harmonic components can, all together, reach more than the fundamental component). To reduce the harmonic content of the current (and so the THD), the units illustrated in this manual are equipped with line inductance. -
Page 35: Operation
Operation Operator’s responsibilities It is important that the operator is appropriately trained and becomes familiar with the system before operating the machine. In addition to reading this manual, the operator must study the microprocessor operating manual and the wiring diagram in order to understand start-up sequence, operation, shutdown sequence and operation of all the safety devices. Read the VFD manual carefully. -
Page 36: Figure 20 - Refrigeration Cycle
Figure 20 - Refrigeration cycle Valvola ritegno Check valve Attacco 1/4" SAE 1/4" SAE connection Valvola di sicurezza Safety valve Valvola di espansione Expansion valve Pressostato alta pressione High-pressure switch Spia passaggio liquido Liquid flow sight glass Pressostato bassa pressione Low-pressure switch Trasduttore alta pressione High pressure transducer... -
Page 37: Description Of The Refrigeration Cycle With Heat Recovery
Description of the refrigeration cycle with heat recovery The low-temperature refrigerant gas from the evaporator is drawn by the compressor through the electric motor, which gets cooled by the refrigerant. It is subsequently compressed and during this process the refrigerant mixes with the oil from the oil separator. -
Page 38: Figure 21 - Refrigeration Cycle With Partial Heat Recovery
Figure 21 - Refrigeration cycle with partial heat recovery Valvola ritegno Check valve Attacco 1/4" SAE 1/4" SAE connection Valvola di sicurezza Safety valve Valvola di espansione Expansion valve Pressostato alta pressione High-pressure switch Spia passaggio liquido Liquid flow sight glass Pressostato bassa pressione Low-pressure switch Trasduttore alta pressione... -
Page 39: Compressor
Compressor The single-screw compressor is of the semi-hermetic type with an asynchronous three-phase, two-pole 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. -
Page 40: Figure 23 - Compression Process
Figure 23 - Compression process 1. and 2. Suction Main rotor flutes 'a', 'b' and 'c' are in communication at one end with the suction chamber via the bevelled rotor end face, and are sealed at the other end by the star rotor teeth. -
Page 41: Cooling Capacity Control
Cooling capacity control The compressors are factory-equipped with a stepless cooling capacity control system. An unloading slide reduces the intake groove volume and its actual length. This slide is used to operate the compressor at minimum and maximum load, and as in all other conditions the cooling capacity is adjusted by the inverter, which modulates the speed of the screw (for further details on how the inverter works, please refer to the enclosed Combivert manual). -
Page 42: Figure 25 - Continuously Variable Capacity Control For Fr3100 Compressor
Spring Force + Discharge Pressure Cylinder Pressure = Slide Valve Moves Towards Unload Cylinder Pressure Discharge Pressure + Spring Force = Slide Valve Moves Towards Load APACITY ONTROL CTION OLENOID ALVE OLENOID ALVE Load compressor High pressure oil is admitted to the capacity control cylinder. Oil pressure overcomes the force of the spring supplemented by De-energise (close) Energise (open) -
Page 43: Pre-Startup Checks
Pre-startup checks General Once the machine has been installed, use the following procedure to check that is has been done properly: CAUTION Before servicing the machine in any way, open the general disconnect switch on the machine main power supply. When the machine is off but the disconnect switch is in the closed position, unused circuits are live, as well. -
Page 44: Units With An External Water Pump
IMPORTANT Before putting the machine into operation, clean the water circuit. Dirt, scaling, corrosion residue and other foreign material can accumulate in the heat exchanger and reduce heat transfer capacity. Pressure drops can also increase, consequently reducing water flow. Thus, correct water treatment reduces the risk of corrosion, erosion, scaling, etc. The most appropriate water treatment must be established locally according to the type of installation and local characteristics of the process water. -
Page 45: Power Supply Of Electrical Heaters
thus the unbalance percentage is below the maximum allowed (3%) Power supply of electrical heaters Each compressor comes with an electrical heater located at the bottom of the compressor. Its purpose is to warm up the lubricating oil and thus avoid the mixing of refrigerant fluid within. It is therefore necessary to ensure that the heaters are powered at least 24 hours before the planned start-up time. -
Page 46: Startup Procedure
Startup procedure Turning on the machine With the general switch Q10 closed, check that switches Q0, Q1, Q2 and Q12 are in the Off (or 0) position and the Q8 switch is in the requested position. Close the thermal-magnetic switch Q12 and wait for the microprocessor and the control to start. Check that the oil temperature is warm enough. -
Page 47: Selecting An Operating Mode
IMPORTANT If the machine is not supplied with a built-in pump, do not shut down the external pump before 3 minutes have elapsed after the last compressor has shut down. Early shutdown of the pump triggers a water-flow failure alarm. Selecting an operating mode The chiller operating mode (water cooling) is selected by setting the Q8 switch in 0 (or off) position, while the heat pump operating mode (water heating) is selected by setting the Q8 switch in 1 (or on) position. -
Page 48: System Maintenance
System maintenance WARNING All routine and extraordinary maintenance activities on the machine must be carried out solely by qualified personnel who are familiar with the machine characteristics, operation and maintenance procedures, and who are aware of the safety requirements and risks involved. WARNING The causes of repeated shutdowns deriving from triggering of safety devices must be investigated and corrected. -
Page 49: Routine Maintenance
A “A” unloading solenoid valve B High pressure switch C High pressure transducer D Oil/discharge temperature sensor E "B" loading solenoid valve F Oil transducer (hiddden side) G Oil filter Figure 26 - Installation of control devices for Fr3100 compressor Routine maintenance Table 4 - Routine maintenance programme List of Activities... -
Page 50: Replacement Of Filter Dryer
Notes: 1 Monthly activities include all 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 In environments with a high concentration of air-borne particles, it might be necessary to clean the condenser bank more often. -
Page 51: Replacement Of The Oil Filter
Replacement of the oil filter ATTENTION The lubrication system has been designed to keep most of the oil charge inside the compressor. During operation, however, a small amount of oil circulates freely in the system, conveyed by the refrigerant. The amount of replacement oil going into the compressor should therefore be equal to the quantity removed rather than the amount stated on the nameplate;... -
Page 52: Figure 27 - Front And Back Views For Fr3100
A Suction side B Low pressure measurement point C Oil drainage tap position D Position of oil-heating electrical resistance E Oil temperature sensor F Oil filter cover G Minimum oil level H Oil transducer Maximum oil level Liquid injection K Oil loading plug Figure 27 - Front and back views for Fr3100 Refrigerant charge ATTENTION... -
Page 53: Procedure To Replenish Refrigerant
The machine can be replenished under any stable load condition (preferably between 70 and 100%) and under any ambient temperature condition (preferably above 20°C). The machine should be kept running for at least 5 minutes to allow the fan steps, and thus the condensation pressure, to stabilise. Note: When the load and the number of active fans vary, so does the subcooling and it requires several minutes to stabilise again. -
Page 54: Standard Checks
Standard checks Temperature and pressure sensors The unit comes factory-equipped with all the sensors listed below. Periodically check that their measurements are correct by means of reference instruments (manometers, thermometers); correct the wrong readings as necessary using the microprocessor keypad. Well-calibrated sensors ensure better efficiency for the machine and a longer lifetime. Note: refer to the microprocessor use and maintenance manual for a complete description of applications, settings and adjustments. -
Page 55: Test Sheet
Test sheet It is recommended that the following operation data are recorded periodically in order to verify the correct function of the machine over the time. These data will also be extremely useful to the technicians who will be performing routine and/or extraordinary maintenance on the machine. -
Page 56: Service And Limited Warranty
Service and limited warranty All machines are factory-tested and guaranteed for 12 months as of the first start-up or 18 months as of delivery. These machines have been developed and constructed according to high quality standards ensuring years of failure-free operation. -
Page 57: Periodic Obligatory Checks And Starting Up Of Appliances Under Pressure
Periodic obligatory checks and starting up of appliances under pressure The units are included in category III of the classification established by the European Directive PED 2014/68/EU. For chillers belonging to this category, some local regulations require a periodic inspection by an authorized agency. Please check with your local requirements. -
Page 58: Important Information Regarding The Refrigerant Used
Important information regarding the refrigerant used This product contains fluorinated greenhouse gases. Do not vent gases into the atmosphere. Refrigerant type: R134a GWP(1) value: 1430 (1)GWP = Global Warming Potential The refrigerant quantity is indicated on the unit name plate. Periodical inspections for refrigerant leaks may be required depending on European or local legislation. - Page 59 Factory and Field charged units instructions (Important information regarding the refrigerant used) The refrigerant system will be charged with fluorinated greenhouse gases. Do not vent gases into the atmosphere. 1 Fill in with indelible ink the refrigerant charge label supplied with the product as following instructions: the refrigerant charge for each circuit (1;...
- Page 60 Disposal The unit is made of metal and plastic parts. All these parts must be disposed of in accordance with the local regulations in terms of disposal. Lead batteries must be collected and taken to specific refuse collection centres. D-EIMHP00508-16EN - 60/64...
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- Page 64 Spares enquiries call us on: N.V. Daikin Europe N.V. has compiled the content of this publication to the best of its knowledge. No express or implied warranty is given for the completeness, accuracy, reliability or fitness for particular purpose of its content and the products and services presented therein.