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Summary of Contents for Daikin EWYE CZ Series
- Page 1 Public Date 12/2024 Supersedes Installation, Operation and Maintenance Manual Installation, Maintenance and Operation Manual D-EIMHP01812-24_00EN Air to water heat pump units with scroll compressors EWYE~CZ Original Instructions...
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Page 2: Table Of Contents
CONTENTS 1 INTRODUCTION ................................4 1.1 Precautions against residual risks ......................... 4 1.2 General description ............................... 5 1.3 Information about the refrigerant ........................... 6 1.4 Installation information ............................6 2 RECEIPT OF THE UNIT..............................9 3 STORAGE ................................... 10 3.1 Operation limits ..............................10 4 MECHANICAL INSTALLATION ........................... - Page 3 List of figures Figure 1 - Operating limits on EWYE-CZ in cooling mode ....................10 Figure 2 - Operating limits on EWYE-CZ in heating mode ....................11 Figure 3 – Lifting the MONO unit............................13 Figure 4 – Lifting the DUAL unit ............................13 Figure 5 –...
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Page 4: Introduction
INTRODUCTION This appliance is intended to be used by expert or trained users in shops, in light industry and on farms, or for commercial use by lay persons. The appliance shall not be accessible to the general public: install it in a secured area, protected from easy access. -
Page 5: General Description
It is not permitted to walk or rest other objects on the machines The user is responsible for overall evaluation of the risk of fire in the place of installation (for example, calculation of the fire load). During transport, always secure the unit to the bed of the vehicle to prevent it from moving about and overturning. The machine must be transported according to the regulations in force considering the characteristics of the fluids in the machine and the description of these on the safety data sheet. -
Page 6: Information About The Refrigerant
Information about the refrigerant This product contains R454C refrigerant that has a minimal environmental impact, thanks to its low value of Global Warming Potential (GWP). According to ISO 817, R454C refrigerant is classified as A2L, which is slightly flammable, since the flame propagation rate is low, and nontoxic. R454C refrigerant can burn slowly when all the following conditions are present: •... - Page 7 • Open (naked) flames shall not be permitted in machinery rooms, except for welding, brazing or similar activity and then only provided the refrigerant concentration is monitored and adequate ventilation is ensured. Such open flames shall not be left unattended. •...
- Page 8 • All electrical equipment (not only the refrigerating system) shall be selected to be suitable for use in the zones identified in the risk assessment. Electrical equipment shall be deemed to comply with the requirements if the electrical supply is isolated when the refrigerant concentration reaches 25% of the lower flammable limit or less. •...
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Page 9: Receipt Of The Unit
Immediately report the damage to the manufacturer representative, a set of photographs is helpful in recognizing responsibility. The restitution of the machinery is intended as ex-factory Daikin Applied Europe S.p.A.. Daikin Applied Europe S.p.A. declines all responsibility for any damage that the machinery may suffer during transport to the destination. -
Page 10: Storage
STORAGE If it is necessary to store the unit before installation, it is necessary to observe some precautions: • do not remove the protective plastic; • protect the unit from dust, bad weather and any rodents; • do not expose the unit to direct sunlight; •... -
Page 11: Figure 2 - Operating Limits On Ewye-Cz In Heating Mode
OPERATION RANGE HEATING – EWYE-CZ heating Ref. 5 Ref. 4 Ref. 3 -30 -25 -20 -15 -10 OAT [°C] Figure 2 - Operating limits on EWYE-CZ in heating mode Outside ambient temperature CLWT Condenser Leaving water temperature Ref. 1 Unit operations in this area require OP. 192 HIGH AMBIENT TEMPERATURE KIT. Unit operations in this area require the enabling of the Brine version in the controller and the use of the Ref. -
Page 12: Mechanical Installation
MECHANICAL INSTALLATION Safety Before installation and commissioning of the machinery, the people involved in this activity must have acquired the information necessary to perform these tasks, applying all the information gathered in this manual. In particular: • the unit must be firmly anchored to the ground when it must not be moved •... -
Page 13: Lifting The Mono Unit
4.2.1 Lifting the MONO unit The machine must be lifted slowly and well levelled. Always use protective devices to prevent damage to the belt and note the position of the unit’s centre of gravity. Adjust the lifting equipment if necessary to ensure that the unit is levelled. The unit(s)- both Mono and Dual- can be lifted, using the buttonholes in the base, by: •... -
Page 14: Positioning And Assembly
Positioning and assembly All units are designed for installation outdoors, either on balconies or on the ground, provided that the installation area is free of obstacles that could reduce air flow to the condensers coil. The unit must be installed on a robust and perfectly level foundation;... - Page 15 D-EIMHP01812-24_00EN 15/47...
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Page 16: Figure 6 - Dual Unit Positioning
Figure 6 – DUAL unit positioning The base can be installed both longitudinally or transversely. In the following figures are illustrated the mounting holes location: D-EIMHP01812-24_00EN 16/47... -
Page 17: Mounting The Main Switch Handle
Figure 7 – Mounting holes location (bottom view) Before unit commissioning, the flatness must be verified by using a laser levelling device or other similar devices. The flatness shall not be over 5 mm for units within 7 m length. To ensure best performance on the installation site, the following precautions and instructions must be followed •... -
Page 18: Figure 8 - Dual-Unit
Both these conditions can cause an increase of condensing pressure, which leads to a reduction in energy efficiency and refrigerating capacity. Any side of the unit must be accessible for post installation maintenance operations and vertical air discharge must not be obstructed. -
Page 19: Additional Installation Site Requirements
Figure 9 –Units installed side by side along their shorter sides, B or D Case 1 Case 2 Figure 10 –Units installed side by side along their longer sides (Case 1 and Case 2) The minimum distances, reported above, ensure functionality of the unit in most applications Additional installation site requirements •... -
Page 20: Noise And Acoustic Protection
• Ensure that water cannot cause any damage to the location by adding water drains to the foundation and prevent water traps in the construction. Seaside installation Make sure the outdoor unit is NOT directly exposed to sea winds. This is to prevent corrosion caused by high levels of salt in the air, which might shorten the life of the unit. -
Page 21: Water Circuit For Connection With The Unit
Water circuit for connection with the unit 4.7.1 Water piping Piping must be designed with the lowest number of elbows and the lowest number of vertical changes of direction. In this way, installation costs are reduced considerably, and system performance is improved. The water system must have: Antivibration mountings to reduce transmission of vibrations to the structures. -
Page 22: Preparing And Checking The Water Circuit Connection
The flow switch is set up to intervene when the water flow of the BPHE reaches the minimum value of the flow acceptable (see the table below). Model Flowswitch Setpoint [l/min] EWYE019CZ(N/P)-A1 EWYE022CZ(N/P)-A1 EWYE025CZ(N/P)-A1 EWYE030CZ(N/P)-A1 EWYE035CZ(N/P)-A1 EWYE050CZ(N/P)-A2 EWYE060CZ(N/P)-A2 EWYE070CZ(N/P)-A2 Table 3 - Flow Switch Setpoint To ensure correct operation of the unit, the value of the water flow in the evaporator must be within the declared range for that unit. -
Page 23: Hydraulic Diagram
4.7.5 Hydraulic diagram The unit is supplied with the following hydraulic components: WATER CIRCUIT Figure 12 –Hydraulic diagram N.B. The Pump kit is optional WATER CIRCUIT EQUIPMENT a.Pump m.Expansion vessel d.Drain y.Water filter e.Plugged fitting TT Temperature sensor f.Safety valve 3 BAR ½” PI Pressure gauge g.Shut off valve FS Flowswitch... -
Page 24: Water Treatment
Water treatment Before putting the unit into operation, clean the water circuit. The BPHE must not be exposed to flushing velocities or debris released during flushing. It is recommended that a suitably sized bypass and valve arrangement is installed to allow flushing of the piping system. The bypass can be used during maintenance to isolate the heat exchanger without disrupting flow to other units. -
Page 25: 4.11 Operating Stability And Minimum Water Content In The System
EWYE-CZP – Pump low lift 350,00 300,00 250,00 curva A 200,00 curva B 150,00 curva C 100,00 curva D 50,00 0,00 0,00 1,00 2,00 3,00 4,00 5,00 6,00 7,00 Water flow rate [L/s] Figure 14 - External pressure head of Low Lift Pump External static pressure refers to unit equipped with hydronic kit, defined as difference between pump external static pressure and evaporator and water filter pressure drop. -
Page 26: Heating Mode
The above rule of thumb derives from the following formula, as the relative volume of water capable of maintaining the water temperature setpoint differential during the minimum load transient avoiding an excessive starts and stops of the compressor itself (which depends on the compressor technology): ����... -
Page 27: 4.12 Calibrating The Expansion Vessel
4.12 Calibrating the expansion vessel Expansion vessel’s starting pressure depends on the difference between the level at which the unit is installed and the highest point in the water circuit, and is calculated as follows: Pi=0,3+(H/10) (bar) • Pi Initial pressure •... -
Page 28: 4.13 Antifreeze Protection For Bphe
It cannot protect field installed parts outside the unit. Field heater tapes must be provided by the installer. Damage caused by freezing is excluded from the warranty, therefore Daikin Applied Europe S.p.A. declines all responsibility. D-EIMHP01812-24_00EN 28/47... -
Page 29: Electrical Installation
Provide an electrical circuit to connect the unit. It must be connected to the copper cables with an adequate section relative to the absorption values and according to the current electrical standards. Daikin Applied Europe S.p.A. declines all responsibility for an inadequate electrical connection. The connections to the terminals must be made with copper terminals and cables, otherwise overheating or corrosion may occur at the connection points with the risk of damaging the unit. -
Page 30: Cable Requirements
Cable requirements The cables connected to the circuit breaker must respect the insulation distance in the air and the surface isolation distance between the active conductors and the earth, according to IEC 61439-1 table 1 and 2, and to the local national laws. -
Page 31: Safety Device Requirements
5.3.2 Safety device requirements The power supply must be protected with a Residual current device, as indicated in the table below. Main switch and Fuses can be added in accordance with the applicable legislation. Selection and sizing of the wiring should be done in accordance with the applicable legislation based and the maximum unit current. -
Page 32: Operator's Reponsibilities
OPERATOR’S REPONSIBILITIES It is essential that the operator is appropriately trained and becomes familiar with the system before operating the unit. In addition to reading this manual, the operator must study the microprocessor operating manual and the wiring diagram to understand startup sequence, operation, shutdown sequence and operation of all the safety devices. -
Page 33: Maintenance
MAINTENANCE Personnel working on the electrical or the refrigeration components must be authorized, trained and fully qualified. Maintenance and repair requiring the assistance of other skilled personnel should be carried out under the supervision of the person competent in the use of flammable refrigerants. Any person conducting servicing or maintenance on a system or associated parts of the equipment should be competent according to EN 13313. -
Page 34: Pressure / Temperature Table
Pressure / temperature table T [°C] T [°C] T [°C] T [°C] (dew) (bubble) (dew) (bubble) (dew) (bubble) (dew) (bubble) 1,57 2,17 4,24 5,48 9,50 11,60 18,70 21,64 1,71 2,35 4,54 5,84 10,05 12,22 19,62 22,61 1,86 2,54 4,85 6,21 10,62 12,86 20,58... -
Page 35: Electrical Maintenance
Remove surface dirt, leaves, fibers, etc. with a vacuum cleaner (preferably with a brush or other soft attachment rather than a metal tube), compressed air blown from the inside out, and/or a soft bristle (not wire!) brush. Do not impact or scrape the coil with the vacuum tube, air nozzle, etc. -
Page 36: Table 10 - Standard Routine Maintenance Plan
Monthly Yearly / Seasonal List of activities Weekly (Note 1) (Note 2) General Reading of operating data (Note 3) Visual inspection of unit for any damage and/or loosening Verification of thermal insulation integrity Cleaning Paint where necessary Analysis of water (4) Check of flow switch operation Electrical Installation: Verification of control sequence... -
Page 37: Table 11 - Routine Maintenance Plan For Critical Application And/Or Highly Aggressive Environment
Monthly Yearly / Seasonal List of activities (Note 8) Weekly (Note1) (Note2) General: Reading of operating data (Note 3) Visual inspection of unit for any damage and/or loosening Verification of thermal insulation integrity Cleaning Paint where necessary Analysis of water (4) Check of flow switch operation Electrical Installation: Verification of control sequence... -
Page 38: Refrigerant Circuit Scheme
7.2.4 Refrigerant circuit scheme Figure 16 - Refrigerant circuit (P&ID) diagram for MONO circuit EWYE~CZ unit REFRIGERAT PED-GROUP LINE Ts (°C) (bar) R454C HIGH PRESSURE GAS 42,9 +10/+120 HIGH PRESSURE LIQ 42,9 -10/+70 LOW PRESSURE -30/+60 D-EIMHP01812-24_00EN 38/47... -
Page 39: Figure 17 - Refrigerant Circuit (P&Id) Diagram For Dual Circuit Ewye~Cz Unit
Figure 17 - Refrigerant circuit (P&ID) diagram for DUAL circuit EWYE~CZ unit REFRIGERANT PED-GROUP LINE Ts (°C) (bar) R454C HIGH PRESSURE GAS 42,9 +10/+120 HIGH PRESSURE LIQ 42,9 -10/+70 LOW PRESSURE -30/+60 D-EIMHP01812-24_00EN 39/47... - Page 40 Legend Item Description Scroll compressor Four-way valve Tube&fins heat-exchanger (coil) Liquid receiver Mechanical Filter Electronic expansion valve Economizer EEV (electronic expansion valve) Heat exchangerBPHE Check valve Economizer (BPHE) Access fitting Solenoid valve Receiver valve Cranckase heater Water inlet and outlet are indicative. Please refer to the machine dimensional diagrams for exact water connections. The series is composed by mono (one circuit) and dual (two circuits) reversible unit.
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Page 41: List Of The Labels Applied To The Unit
LIST OF THE LABELS APPLIED TO THE UNIT Labels Description Location On the electric panel (outside) Hazardous voltage warning On the electric panel (outside) A2L-Symbol On the electric panel (outside) Manufacturer’s logo On the unit frame and one on the Lifting instructions packaging On the unit panel near the unit lifting... -
Page 42: Commissioning
A minimum system load of 60% of machine capacity is available for testing and adjusting controls Table 13 - Checks before starting up the unit This list must be completed and sent to the local Daikin Service department at least two weeks before the startup date. -
Page 43: Important Information On The Refrigerant Used
IMPORTANT INFORMATION ON THE REFRIGERANT USED This product contains fluorinated greenhouse gases. Do not vent gases into the atmosphere. Refrigerant: R454C GWP Value (Global Warming Potential): 146 The refrigerant system is charged with fluorinated greenhouse gases and the refrigerant charge is impressed on the plate. -
Page 44: Periodic Checks And Commissioning Of Pressure Equipment
PERIODIC CHECKS AND COMMISSIONING OF PRESSURE EQUIPMENT The units are included in category II and III of the classification established by the European Directive 2014/68/EU (PED). For units belonging to these categories, some local regulations require a periodic inspection by an authorized person. Please check with your local requirements. -
Page 45: Dismission And Disposal
DISMISSION AND DISPOSAL The unit is made of metal, plastic and electronic parts. All these components must be disposed of in accordance with local disposal laws and if in scope with the national laws implementing the Directive 2012/19/EU (RAEE). Lead batteries must be collected and sent to specific waste collection centers. Avoid the escape of refrigerant gases into the environment by using suitable pressure vessels and tools for transferring the fluids under pressure. - Page 46 NOTES D-EIMHP01812-24_00EN 46/47...
- Page 47 All data and specifications contained therein may be subject to change without notice. Refer to the data communicated at the time of the order. Daikin Applied Europe S.p.A. explicitly rejects any liability for any direct or indirect damage, in the broadest sense, arising from or related to the use and/or interpretation of this publication.
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