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Summary of Contents for Daikin EWAT_B
- Page 1 Date June 2018 Supersedes Operating Manual D-EOMAC01706-18EN Air Cooled chiller with scroll compressors EWAT_B...
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Page 2: Table Of Contents
Setpoint Reset by External 4-20Ma signal ..................20 4.10.2.3 Setpoint Reset by DT ......................... 21 4.11 Electrical Data ..............................22 4.12 Controller IP Setup .............................. 23 4.13 Daikin On Site ..............................24 4.14 Heat Recovery ..............................24 5 ALARMS AND TROUBLESHOOTING ........................26 Unit Alerts................................26 5.1.1 BadLWTReset - Bad Leaving Water Temperature Reset Input .............. - Page 3 CxOff MechHighPress - Mechanical High Pressure Alarm ................. 35 5.5.8 CxOff NoPressChange - No Pressure Change At Start Alarm..............36 5.5.9 Cx FailedPumpdown - Failed Pumpdown procedure .................. 36 5.5.10 CmpX Protection – Compressor Protection ....................37 EWAT_B Operating Manual 3/38...
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Page 4: Safety Considerations
Handle power cable, electrical cables and conduits, terminal box covers and motor frames with great care. ATTENTION: In accordance with the operating conditions the fans can be cleaned periodically. A fan can start at any time, even if the unit has been shut down. Operating Manual EWAT_B 4/38... -
Page 5: General Description
One MicroTech III main controller I/O extensions as needed depending on the configuration of the unit Communications interface(s) as selected Peripheral Bus is used to connect I/O extensions to the main controller. EWAT_B Operating Manual 5/38... -
Page 6: Communication Modules
The HMI structure is based on access levels that means that each password will disclose all the settings and parameters allowed to that password level. Basic informations about the status can be accessed without the need to enter the password. The user UC handles two level of passwords: Operating Manual EWAT_B 6/38... -
Page 7: Editing
Automatic restart after 3 to the Master. The timeout after 3 seconds are downloading a new LON seconds is initiated. can be configured. In case initiated. application) that the timeout is zero the timeout is disabled. EWAT_B Operating Manual 7/38... -
Page 8: Controller Maintenance
“About Chiller” page accessible without entering a password. When connected, it will be required to enter a user name and a password. Enter the following credential to get access to the web interface: User Name: ADMIN Password: SBTAdmin! Operating Manual EWAT_B 8/38... - Page 9 HTML 5 like for example: Microsoft Internet Explorer v.11, Google Chrome v.37, Mozilla Firefox v.32. These software are only an example of the browser supported and the versions indicated have to be intended as minimum versions. EWAT_B Operating Manual 9/38...
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Page 10: Working With This Unit
Network On/Off (optional with communication modules) 4.1.1 Keypad On/Off In the main page, scroll down until Unit Enable menu, where are available all settings to manage unit and circuits start/stop. Parameter Range Description Unit Disable Unit disabled Enable Unit enabled Operating Manual EWAT_B 10/38... -
Page 11: Scheduler And Silent Mode Functionalities
Circuit #X enabled Test Circuit #X in test mode. This feature has to be used only from trained person or Daikin service 4.1.2 Scheduler and Silent mode functionalities The Scheduler function can be used when is required an automatic chiller start/stop programming. -
Page 12: Silent Mode Function Can Be Enabled Only In Unit Equipped With Vfd Fans
When the operating mode Cool/Ice w/Glycol is selected, the Double Setpoint contact will be used to switch between the Cool and Ice mode, producing no change on the active setpoint To modify the active setpoint through network connection, refer to Network control section 4.5. Operating Manual EWAT_B 12/38... -
Page 13: Unit Mode
To activate the test feature is required to disable the Unit from the Q0 switch and change the available mode to Test. Energy No, Yes Disable/Enable of the energy saving function Saving EWAT_B Operating Manual 13/38... -
Page 14: Energy Saving Mode
The Unit has been disabled by keypad. Check with your local maintenance if it can be enabled. Network Disabled Unit is disabled by Network. Unit Switch The Q0 selector is set to 0 or the or the Remote On/Off contact is opened. Operating Manual EWAT_B 14/38... -
Page 15: Network Control
Other compressors stop Controlled Temperature < Setpoint - Stage Dn DT Controlled Temperature > Setpoint - Stage Dn DT A qualitative example of compressors start-up sequence in cool mode operation is shown in the graph below. EWAT_B Operating Manual 15/38... -
Page 16: Date/Time
The unit controller is able to take stored the actual date and time, that are used for: Scheduler Cycling of standby chiller with Master Slave configuration Alarms Log Date and time can be modified going in View/Set Unit Date/Time Operating Manual EWAT_B 16/38... -
Page 17: Pumps
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. The alarm logic associated to the contact is the following: EWAT_B Operating Manual 17/38... -
Page 18: Power Conservation
Number of Compressor Demand Limit Signal [mA] Maximum number of compressors On 4 < < 8 8 < < 12 12 < < 16 16 < < 20 Operating Manual EWAT_B 18/38... -
Page 19: Setpoint Reset
Main Menu View/Set Unit Power Conservation Setpoint Reset. Note that the parameters corresponding to a specific strategy will be available only once the Setpoint Reset has been set to a specific value and the UC has been restarted. EWAT_B Operating Manual 19/38... -
Page 20: Setpoint Reset By Oat (A/C Units Only)
4-20mA signal: 4 mA corresponds to 0°C correction, i.e. AS = LWT setpoint, whereas 20 mA corresponds to a correction of the Max Reset (MR) quantity, i.e. AS = LWT setpoint + MR(-MR) as shown in the following table: Operating Manual EWAT_B 20/38... -
Page 21: Setpoint Reset By Dt
(EWT). When the |ΔT| becomes smaller than the Start Reset ΔT setpoint(SRΔT), the LWT active setpoint is proportionally increased (if Cooling mode set) or decreased (if Heating mode is set) of a maximum value equal to the Max Reset(MR) parameter. EWAT_B Operating Manual 21/38... -
Page 22: Electrical Data
Returns the current average and links to the Current Data page Average Power Returns the average power Active Power Returns the active power Power Factor Returns the power factor Active Energy Returns the active energy Frequency Returns the active frequency Operating Manual EWAT_B 22/38... -
Page 23: Controller Ip Setup
IP, Mask, Gateway, PrimDNS and ScndDNS addresses, if needed, taking care of the current network settings set Apply changes parameter to Yes to save the configuration and restart the MTIII controller. The default internet configuration is: Parameter Default Value 192.168.1.42 Mask 255.255.255.0 EWAT_B Operating Manual 23/38... -
Page 24: Daikin On Site
The Daikin on Site(DoS) page can be accessed navigating through Main Menu View/Set Unit Daikin On Site. In order to use the DoS utility, the customer has to communicate the Serial Number to Daikin company and subscribe to the DoS service. - Page 25 Heat recovery 3-way valve opening percentage HR Pumps Heat recovery pump state HR Pump Hours Heat recovery pump running hours HR C1 Enable Heat recovery enable on circuit 1 HR C2 Enable Heat recovery enable on circuit 2 EWAT_B Operating Manual 25/38...
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Page 26: Alarms And Troubleshooting
Backup pump is used or stop of all circuits Check that electrical breaker of pump #1 in case of pump #2 failure. is tripped. String in the alarm list: If fuses are used to protect the pump, EvapPump1Fault check the integrity of fuses. Operating Manual EWAT_B 26/38... -
Page 27: Evappump2Fault - Evaporator Pump #2 Failure
Sensor is not properly connected (open). Check for absence of water or humidity on HeatRec EntWTempSen electrical contacts. Check for correct plug-in of the electrical connectors. Check for correct sensors wiring also according electrical scheme. Reset EWAT_B Operating Manual 27/38... -
Page 28: Heatrec Lvgwtempsen - Heat Recovery Leaving Water Temperature Sensor Fault (A/C Units Only)
Bell icon is moving on controller’s display. Check if LEDs are both green. String in the alarm list: Check if the connector on the side is tightly Option2BoardComm inserted in the module Operating Manual EWAT_B 28/38... -
Page 29: Unit Pumpdown Alarms
Check if sensor is shorted with a UnitOffAmbTempSen resistance measurement. String in the alarm log: Sensor is not properly connected (open). Check for absence of water or humidity on UnitOffAmbTempSen electrical contacts. String in the alarm snapshot EWAT_B Operating Manual 29/38... -
Page 30: Unit Rapid Stop Alarms
String in the alarm log: Check that voltage level on each phases is UnitOff PVM the allowed range (±10%). into the allowed range that is indicated on String in the alarm snapshot the chiller label. Operating Manual EWAT_B 30/38... -
Page 31: Unitoff Evapwaterflow - Evaporator Water Flow Loss Alarm
Sensor is shorted. Check for sensor integrity. The circuit is switched off with the normal Check correct sensors operation shutdown procedure. according information about kOhm (k) Bell icon is moving on controller’s display. range related to temperature values. EWAT_B Operating Manual 31/38... -
Page 32: Cxoff Offsucttempsen - Suction Temperature Sensor Fault
All alarms reported in this section produce an instantaneous stop of the circuit. 5.5.1 CxOff CondPressSen - Condensing Pressure sensor fault This alarm indicates that the condensing pressure transducer is not operating properly. Symptom Cause Solution Operating Manual EWAT_B 32/38... -
Page 33: Cxoff Evappresssen - Evaporating Pressure Sensor Fault
CxOff DischTmpHigh controlled between the limits. Check that the liquid injection line is not obstructed by observing the discharge temperature when it is activated. Discharge temperature sensor could not Check proper operation operate properly. discharge temperature Reset EWAT_B Operating Manual 33/38... -
Page 34: Cxoff Condpresshigh - High Condensing Pressure Alarm
Protection limit not set to fit customer Check the evaporator approach and the String in the alarm log: application. corresponding water temperature CxOff EvapPressLow evaluate the low pressure hold limit. String in the alarm snapshot High Evaporator Approach. Clean the evaporator Operating Manual EWAT_B 34/38... -
Page 35: Cxoff Restartfault - Restart Fault
This alarm is generated when the condenser pressure rises above the mechanical high pressure limit causing this device to open the power supply to all the auxiliary relays. This causes an immediate shutdown of compressor and all the other actuators in this circuit. EWAT_B Operating Manual 35/38... -
Page 36: Cxoff Nopresschange - No Pressure Change At Start Alarm
It may not be recognized from BMS because the communication latency can give enough time for the reset. It may not even be seen on the local HMI. Operating Manual EWAT_B 36/38... -
Page 37: Cmpx Protection - Compressor Protection
String in the alarm list: CmpX Protection Compressor is working out of its operating String in the alarm log: limits CmpX Protection String in the alarm snapshot CmpX Protection Reset Local HMI Network Auto EWAT_B Operating Manual 37/38... - Page 38 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.
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