Related Manuals for Daikin EWYT CZ Series
Summary of Contents for Daikin EWYT CZ Series
- Page 1 Date 08/2022 Supersedes D-EOMHP01405_03EN Operating Manual D-EOMHP01405-21_04EN Air to water heat pump units with scroll compressors EWYT~CZ / EWAT~CZ Original Instruction...
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Page 2: Table Of Contents
3.12.3.1. Setpoint Reset by OAT ..............................19 3.12.3.2. Setpoint Reset by 0-10V signal ............................20 3.12.3.3. Setpoint Reset by DT ...............................20 3.13. Controller IP Setup ...................................21 3.14. Daikin On Site ....................................21 3.15. Date/Time ......................................22 3.16. Master/Slave ......................................22 3.17. Unit Boost ......................................23 3.18. Fan Boost ......................................23 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 –...
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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/MCQ is a system for controlling single or dual-circuit air cooled chillers. POL468.85/MCQ/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/MCQ to ensure their safe operation. -
Page 6: Embedded Web Interface (Optional)
2.6. Embedded Web Interface (Optional) The POL468.85/MCQ/MCQ controller has an embedded web interface, available with accessory EKRSCBMS (Connectivity for external BMS communication), that can be used to monitor the unit when connected to a TCP-IP network. It is possible to configure the IP addressing of the POL468.85/MCQ as a fixed IP of DHCP depending on the network configuration. -
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 on Connected No Connection Requesting Connection site LED on/stand-by Unit Enabled Unit Disabled LED Boost mode Boost Mode ON... -
Page 9: Insert Password
3.2. Insert Password In order 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 of the 0-9999 (Insert number to move on the next digit. -
Page 10: Scheduler
3.3.2. Scheduler The activation / deactivation of the unit can be managed automatically through the Schedule function, activated when the Unit Enable parameter is set to Schedule. The operating modes during the different daily time bands are managed through the interface page [17] containing the following registers to be set: Menu Page... -
Page 11: Network On/Off
The path in the Web HMI interface is “ ”. → → Main Menu View/Set Unit Scheduler The user can indicate four time slots for each day of the week and set one of the following modes for each of them: Parameter Range Description... -
Page 12: Silent Mode
3.4. Silent Mode Silent mode can be enabled through scheduler or network control. If the unit is set in “ ” the maximum speed of fans is reduced according to “Fan Silent Speed” parameter for Silent Mode both chiller and heat pump mode. Menu Parameter Range... -
Page 13: Unit Mode
Based on the ambient temperature which unit is operating, maximum or minimum leaving water temperature will be automatically controlled to maintain the unit in the proper envelope. To modify the active setpoint through network connection, refer to “Network control” section 3.8. The active setpoint can be further modified using the “Setpoint Reset”... -
Page 14: Cooling-Heating Mode By Software Parameter
Digital input reference Digital input state Description Cool/Heat switch Opened Cooling mode is selected Closed Heating mode is selected 3.6.1.2. Cooling-Heating mode by Software parameter When Software Parameter is selected, as control method for cooling-heating switch and parameter 2.00 is set equal to 2 or 3, unit mode will be set according following table Menu Parameter... -
Page 15: Network Control
▪ DeltaT All settings related to pump management are available in the menu [8]. Menu Parameter Range Description 0-300 Minimum time required within flow switch has to be closed to allow unit (Recirculation startup. time) 0-100 Pump speed with Unit Capacity = 0 (Standby Speed) 0-100 Actual feedback pump speed. -
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
The path in the Web HMI interface is “Main Menu → View/Set Unit → Thermostatic Control”. 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. -
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 The path in the HMI Web interface to set the desired strategy is “Main Menu -> Commission Unit -> Configuration -> Options” and modify the Setpoint Reset parameter. Parameter Range Description... -
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
DoS actual connection state (State) 7 = Connected In order 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: •... -
Page 22: Date/Time
In the unlikely event of UC replacement, the DoS connectivity can be switched from the old PLC to the new one just communicating the current Activation Key to Daikin company. → The Daikin on Site (DoS) page can be accessed navigating through the HMI Web Interface, with path Main Menu →... -
Page 23: Unit Boost
The path in the Web HMI interface for Master/Slave configuration is “ → → Main Menu Commission Unit Configuration → ”. Master/Slave Please refer to specific documentation for more information about of this topic. 3.17. Unit Boost The unit boost is the possibility to increase the maximum compressor frequency to obtain higher capacity. A unit with boost enabled is called MAX VERSION;... -
Page 24: Domestic Hot Water
The path in the Web HMI interface for Costant Heating Capacity funcion is “ → → Main Menu Commission Unit Options → ”. Costant Heating 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 u p a tank, containing the domestic hot water, until a the setpoint temperature is reached. -
Page 25: Connectivity Kit & Bms Connection
0 = 2 Units (SCM Number of Units) 1 = 3 Units 2 = 4 Units 500-900 Defines fan maximum speed during Silent Mode (Fan Silent Spd) Off = DHW Disabled (DHW Enable) (Off-On) On = DHW Enabled The path in the Web HMI interface for Customer Configuration settings is “ ”. -
Page 26: About Chiller
Off = Passive Represent the actual state of EKRSCBMS. (License Manager) On = Active Off = Passive Defines whether to use the bacnet protocol instead of (BacNETOverRS) On = Active modbus on the RS485 port. Off = Passive Defines the activation of BacNET TCP-IP protocol once (BacNET-IP) On = Active EKRSCBMS is unlocked. -
Page 27: Generic Controller Operation
3.26. 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 28 Menu Parameter Sub-Parameter PSW Level [06.03] DT [06.04] Syst [07.00] Alarm List 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...
- Page 29 Menu Parameter Sub-Parameter PSW Level [15.08] FanSilentSpd [15.09] DHW Enable [16] [16.00] Start Up Limit Master/Slave [16.01] Shut Dn Limit (Available only for Master Unit) [16.02] Stage Up Time [16.03] Stage Dn Time [16.04] Threshold [16.05] PrioSlave#1 [16.06] PrioSlave#2 [16.07] PrioSlave#3 [16.08] MasterPriority [16.09] Master Enable [16.10] Standby Chiller...
- Page 30 Menu Parameter Sub-Parameter PSW Level [19.07] 3WV Switch Time [20] [20.00] Reset Type Setpoint reset [20.01] Max Reset DT [20.02] Start Reset DT [20.03] Max Reset CH [20.04] Start Reset CH [20.05] Max Reset HP [20.06] Start Reset HP [22] [22.00] Mb Address Protocol Communication [22.01] Mb BAUD...
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Page 31: 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 32 ▪ Check pump inverter wiring connection ▪ Contact your local dealer ▪ Check [19.05] DHW Alarm Code value ▪ Check Domestic Hot Water 3WV UnitOffDHWAlarm U016 Domestic Hot Water Alarms status ▪ Check 3WV wiring connection ▪ Contact your local dealer Circuit 1 Pressure ratio under minimum ▪...
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Page 33: Troubleshooting
▪ Check sensor wiring connection C2Cmp1 OffSuctTempSen C213 Temperature sensor not detected ▪ Contact your local dealer ▪ Check sensor wiring connection C2Cmp1 OffDischTmpSen C214 Temperature sensor not detected ▪ Contact your local dealer Pumpdown procedure exedes ▪ C2 Failed Pumpdown C215 Contact your local dealer maximum time... - Page 34 Notes D-EOMHP01405-21_02EN 34/35...
- Page 35 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.