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Daikin EWYE CZ Series Operating Manual
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Daikin EWYE CZ Series Operating Manual

Daikin EWYE CZ Series Operating Manual

Air to water heat pump units with scroll compressors
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Public
REV
01
Date
04/2025
Supersedes
D-EOMHP01812-24_00EN
Operating Manual
D-EOMHP01812-24_01EN
Air to water heat pump units with scroll compressors
EWYE~CZ
Original Instruction

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Summary of Contents for Daikin EWYE CZ Series

  • Page 1 Public Date 04/2025 Supersedes D-EOMHP01812-24_00EN Operating Manual D-EOMHP01812-24_01EN Air to water heat pump units with scroll compressors EWYE~CZ Original Instruction...

  • Page 2: Table Of Contents

    3.12.3.2. Setpoint Reset by 0-10V signal ............................20 3.12.3.3. Setpoint Reset by DT .................................20 3.12.3.4. Remote Lwt setpoint ................................20 3.13. Controller IP Setup .....................................21 3.14. Daikin On Site .....................................22 3.15. Date/Time ......................................22 3.16. Master/Slave .......................................23 3.17. Unit Boost ......................................23 3.18. Fan Boost ......................................24 3.19.
  • Page 3 List of graphs Graph 1 – Compressors start-up sequence - Cool mode ....................16 Graph 2 – Demand Limit[V] vs Capacity Limit[%] ....................... 18 Graph 3 – Outside Ambient Temperature vs Active Setpoint - Cooling mode(left)/ Heating mode(right) ......19 Graph 4 –...

  • Page 4: Safety Considerations

    SAFETY CONSIDERATIONS 1.1. General Installation, start-up and servicing of equipment can be hazardous if certain factors particular to the installation are not considered: operating pressures, presence of electrical components and voltages and the installation site (elevated plinths and built-up up structures). Only properly qualified installation engineers and highly qualified installers and technicians, fully trained for the product, are authorized to install and start-up the equipment safely.

  • Page 5: General Description

    GENERAL DESCRIPTION 2.1. Basic Information POL468.85/MCQ is a system for controlling single or dual-circuit air cooled chillers. POL468.85/MCQ controls compressor start-up necessary to maintain the desired heat exchanger leaving water temperature. In each unit mode it controls the operation of the condensers to maintain the proper condensation process in each circuit. Safety devices are constantly monitored by POL468.85/MCQ to ensure their safe operation.

  • Page 6: Embedded Web Interface (Optional)

    With a common web browser, a PC can connect with the unit controller entering the IP address. When connected, it will be required to enter a username and a password. Enter the following credential to get access to the web interface: User Name : Daikin Password: Daikin@Web 2.7.

  • Page 7: Working With This Unit

    WORKING WITH THIS UNIT 3.1. Unit Interface The user interface installed in the unit is divided into 4 functional groups: Numeric value Display (f.g.1) Actual Parameter/Sub-Parameter group (f.g.2) Icon indicators (f.g.3) Menu/Navigation keys (f.g.4) The interface has a multi-level structure divided as follows: Main Menu Parameters Sub-Parameters...

  • Page 8: Icons Description

    Percentage Value LED Percentage displayed LED Alarm No Alarm Alarm Presence Customer parameter LED Setting mode unlocked LED Connection status on Daikin Connected No Connection Requesting Connection on site LED on/stand-by Unit Enabled Unit Disabled LED Boost mode Boost Mode ON...

  • Page 9: Insert Password

    3.2. Insert Password To unlock customer functionalities, the User has to insert the Password through the HMI menu [0]: Menu Parameter Range Description To insert all the 4 digits of the password, press “Set” after the insertion 0-9999 (Insert of the number to move on the next digit. Password) The password to access the customer’...
  • Page 10 [17.2.4] Time 3 [17.2.5] Value 3 (Wednesday) [17.2.6] Time 4 [17.2.7] Value 4 [17.03] = Thursday [17.3.0] Time 1 [17.3.1] Value 1 [17.3.2] Time 2 (Thursday) [17.3.3] Value 2 [17.3.4] Time 3 [17.3.5] Value 3 [17.3.6] Time 4 [17.3.7] Value 4 [17.04] = Friday [17.4.0] Time 1 [17.4.1] Value 1...

  • Page 11: Network On/Off

    3.3.3. Network On/Off Network On/Off can be managed also with BACnet or Modbus RTU communication protocol. To control the unit over the network, follow below instructions: Unit On/Off switch = closed Unit Enable = Enable (refer to 3.3.1) Control Source = 1 (refer to 3.8) The HMI menu is: Menu Parameter...

  • Page 12: Water Setpoints

    3.5. Water Setpoints Purpose of this unit is to cool or to heat (in case of heat pump version) the water, to the setpoint value defined by the user and displayed in the main page: The unit can work with a primary or a secondary setpoint, that can be managed as indicated below: Keypad selection + Double Setpoint digital contact Keypad selection + Scheduler Configuration Network...

  • Page 13: Heat/Cool Set-Up

    In order to have a properly configurated unit, check following settings: • → With EWYE [02.00] = 2 or 3 (Cool/Heat or Cool/Heat w/Glycol) 3.6.1. Heat/Cool set-up Heat/Cool operating mode can be set using three different methods: Digital input Software parameter Network control In the Page [2] is possible to define the required method between Digital Input and Software Parameter.

  • Page 14: Pumps And Variable Flow

    3.7. Pumps and Variable Flow The UC can manage one water pump connected to the water plate heat exchanger. The pump control type is configured in page [15] and can operate in three different ways: 1. Fixed Speed 2. Variable Primary Flow (VPF) 3.

  • Page 15: Network Control

    0-100 First target value for pump speed in Fixed Speed control (Sp Speed1) conditions. 0-100 Second target value for pump speed under Fixed Speed control (Sp Speed2) conditions. 0-45 DeltaP target for the farthest terminal of the system. (Setpoint kPa1) 0-45 Minimum allowed value for the Evaporator Pressure Drop.

  • Page 16: Thermostatic Control

    3.9. Thermostatic Control Thermostatic control settings allow to set up the response to temperature variations. Default settings are valid for most application, however plant specific conditions may require adjustments to have a smooth control or a quicker response of the unit. The unit controller will start the first compressor if the controlled temperature is higher (Cool Mode) or lower (Heat Mode) than the active setpoint of at least a Start Up DT value, whereas second compressor when available is started if the controlled temperature is higher (Cool Mode) or lower (Heat Mode) than the active setpoint (AS) of at least a Stage Up DT...

  • Page 17: External Alarm

    3.10. External Alarm The External Alarm is a digital contact that can be used to communicate to the UC an abnormal condition, coming from an external device connected to the unit. This contact is located in the customer terminal box and depending on the configuration can causes a simple event in the alarm log or also the unit stop.

  • Page 18: Demand Limit

    3.12.1. Demand Limit The “Demand limit” function allows the unit to be limited to a specified maximum load. Capacity limit level is regulated using an external 0-10 V signal with a linear relationship shown in the picture below. A signal of 0 V indicates the maximum capacity available whereas a signal of 10 V indicates the minimum capacity available.

  • Page 19: Setpoint Reset By Oat

    Menu Parameter Range Description 0 = No (Reset Type) 1 = 0-10V 2 = DT 3 = OAT 4 = REMOTE The path in the HMI Web interface to set the desired strategy is “Main Menu -> Commission Unit -> Configuration ->...

  • Page 20: Setpoint Reset By 0-10V Signal

    3.12.3.2. Setpoint Reset by 0-10V signal When the 0-10V is selected as Setpoint Reset option, the LWT active setpoint(AS) is calculated applying a correction based on an external 0-10V signal: 0 V corresponds to 0°C correction, i.e. AS = LWT setpoint, whereas 10 V corresponds to a correction of the Max Reset (MR) quantity, i.e.

  • Page 21: Controller Ip Setup

    External Signal Chiller Heat Pump Without Glycol: Maximum Setpoint HP [70°C] Minimum Setpoit CH [4°C] With Glycol: Minimum Setpoint CH [-15°C] Maximum Setpoint CH [20°C] Minumum Setpoint in HP [20°C] Active Active Setpoint Setpoint MAX LWT SP CH MAX LWT SP HP MIN LWT SP CH MIN LWT SP HP Signal...

  • Page 22: Daikin On Site

    DoS actual connection state (State) 7 = Connected To use the DoS utility, the customer has to communicate the Serial Number to Daikin company and subscribe to the DoS service. Then, from this page, it is possible to: • Start/Stop the DoS connectivity •...

  • Page 23: Master/Slave

    3.16. Master/Slave Master/Slave protocol integration requires the selection of the address for each unit that we want to control. In each system we can have only one master and a maximum of three slaves and it’s necessary to indicate the correct number of slaves. “SCM Address”...

  • Page 24: Fan Boost

    3.18. Fan Boost Fans maximum speed is typically fixed at its nominal value. When the Fan Boost is enabled, the maximum speed of all fans is increased. The ways fan boost can interact with modulation range of fans are: • Fan Boost –...

  • Page 25: Domestic Hot Water

    3.21. Domestic Hot Water This function can be used to alternate normal unit operation with generation of domestic hot water. During “DHW” operation the unit is stopped, the water circuit is deviated by a 3WV and unit started on again to heat up a tank , containing the domestic hot water, until a the setpoint temperature is reached.

  • Page 26: Domestic Hot Water Anti Legionella Cycle

    3.21.2. Domestic Hot Water Anti Legionella Cycle Thie anti legionella cycle functionality let the unit periodically increase his setpoint up to 70°C in order to provide maximum temperature of the domestic hot water tank to prevent the formation of legionella bacteria. If the anti-legionella cycle does not start on the appointed day, an alarm will be displayed on the interface.

  • Page 27: Collective Housing

    3.23. Collective Housing It is requested the introduction of a feature that allows the automatic change of the operating mode of the unit, between heat-pump and chiller, depending on the temperature value read by a probe, that can be called “Changeover Probe”, placed in the plant.

  • Page 28: Connectivity Kit & Bms Connection

    Is it possible to have transition with boiler active even if OAT > Tambient. 0…50 This parameter shall match the exact (System DeltaT) delta temperature drop due to system load. 0…60 Defines activation delay between (Boiler Delay) heat-pump and boiler in bivalent operation OAT range.

  • Page 29: About Chiller

    1-255 Defines UC address in BacNET network. (BN Address) 0-1000 Defines BacNET communication rate in Bps/100 (BN BAUD) Bps/100 and must be identical for all nodes of the bus. 07 BN 0-4.194.302 Defines the four most significant digits of Device (Device ID) 0-(X.XXX.---) ID, used in a BACnet network as the unique...

  • Page 30: Generic Controller Operation

    3.28. Generic Controller Operation The main controller operations available are “Application Save” and “Apply Changes”. The first one is used to save the current configuration of parameters in the UC in order to avoid the possibility to lose it if a power fail happens while the second one is used for some parameters which require an UC reboot in order to become effective.

  • Page 31: Hmi Parameters Navigation Table

    First start For correct initialization of the Energy Monitoring function, a Reset command shall be done immediately before the first start-up of the unit; otherwise, database will be populated with values that do not respect the expected order. Date reference A reset command set the reference date for database.
  • Page 32 Menu Parameter Sub-Parameter Level Alms [07.01] Alarm Clear [08.00] RecT Pump [08.01] Standby Speed [08.02] Speed [08.03] Max Speed [08.04] Min Speed [08.05] Speed 1 [08.06] Speed 2 [08.07] LoadPressDropSp [08.08] EvapPressDropSp [08.09] BypassValve state [08.10] LoadPD [08.11] EvapPD [08.12] Parameter Ti [08.13] Setpoint DT [08.14] Alarm Code [08.15] Sensor Scale...
  • Page 33 Menu Parameter Sub-Parameter Level [15.04] Address [15.05] Ext Alm [15.06] Cost. Heating [15.07] SCM Number of Units [15.08] FanSilentSpd [15.09] DHW Enable [15.10] SG Enable [15.11] SwOptLite 0_3 [15.12] Heating Customized En [16] [16.00] Start Up Limit Master/Slave [16.01] Shut Dn Limit (Available only for Master Unit) [16.02] Stage Up Time...
  • Page 34 Menu Parameter Sub-Parameter Level [17.6.2] Time 2 [17.6.3] Value 2 [17.6.4] Time 3 [17.6.5] Value 3 [17.6.6] Time 4 [17.6.7] Value 4 [18] [18.00] Dem Lim EN Power Conservation [18.01] Current Lim Sp [19] [19.00] Setpoint [19.01] Start Db [19.02] Delay [19.03] Temperature [19.04] 3WV State [19.05] DHW Alarm Code...
  • Page 35 Menu Parameter Sub-Parameter Level [22.16] BusPolarization [23] [23.0] AppSave [23.1] Apply Changes [24] [24.00] App Vers About [24.01] BSP [25] - LWT (String Up) - Unit Cap (String Up) Screen Saver - Setpoint Act (String Dn) - Actual Mode (String Dn) [26] [26.00] Collective Housing En - N/A...

  • Page 36: Alarms And Trouble Shooting

    ALARMS AND TROUBLE SHOOTING The UC protects the unit and the components from damaging in abnormal conditions. Alarms can be divided in pump- down and rapid stop alarms. Pump-down alarms are activated when the system or sub-system can perform a normal shutdown in spite of the abnormal running conditions.
  • Page 37 and the enabled EKRSCIOC accessory ▪ Check wiring connection ▪ Contact your local dealer ▪ Check deep switch on ACS module UnitOffACSCommFail U012 Bad ACS communication ▪ Check wiring connection ▪ Contact your local dealer U013 ▪ Check sensor pump connection EvapPump1Fault U014 Pump Error...
  • Page 38 C118 Discharge super heat C1Cmp1 OffLowDiscSH ▪ C119 Contact your local dealer under minimum limit Condensing pressure over ▪ Mechanical reset of switch C1Cmp1 OffMechPressHi C120 mechanical pressure ▪ Contact your local dealer switch ▪ Pressure sensor not Check sensor wiring connection C1Cmp1 EconPressSen C121 ▪...

  • Page 39: Troubleshooting

    4.2. Troubleshooting If one of the following malfunctions occur, take the measures shown below and contact your dealer. Stop operation and shut off the power if anything unusual occurs (burning smells etc.). Leaving the unit running under such circumstances may cause breakage, electric shock or fire. Contact your dealer.
  • Page 40 Notes D-EOMHP01812-24_01EN- 40/41...
  • Page 41 The present publication is drawn up by of information only and does not constitute an offer binding upon Daikin Applied Europe S.p.A.. Daikin Applied Europe S.p.A. 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.