EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual 1.3 Safety Devices Each unit is equipped with safety devices of three different kinds: 1.3.1 General safety devices...
Page 7
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual In the event of a power supply outage, the unit will restart automatically without the need for an external command.
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual If the pressure becomes too high in the refrigerant circuit, the relief valve will open to limit the maximum pressure.
Page 9
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual Sampling voltage / current DC 24 V / 8 mA...
Page 10
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual 1.6.1.8 Demand Limit (optional) This input allows to limit the maximum number of compressor in run state.
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual CAUTION: Maintain the correct polarity when connecting the power supply to the boards, otherwise the peripheral bus communication will not operate and the boards may be damaged.
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual 3 Using the Controller The control system consists of a unit controller (UC) equipped with a set of extension modules that implement additional features.
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual 3.3 Passwords 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.
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual In the new page rotate the wheel or use button 4/5 to highlight the Network Ctrl and press the wheel or the button 6 again to jump to the next menu where it is possible read the actual Control Source.
Page 18
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual Solid Yellow Communication running but parameter from the application wrong or missing, or uncorrect factory calibration...
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual The Remote can be ordered with the unit and shipped loose as a field installed option. It can also be ordered anytime after chiller shipment and mounted and wired on the job as explained on the following page.
Page 21
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual Enter the following credential to get access to the web interface:...
Page 22
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual These software are only an example of the browser supported and the versions indicated have to be intended as minimum versions.
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual 4 Menu Structure All settings are divided in different menus. Each menu collects in a single page other sub-menus, settings or data related to a specific function (for example Power Conservation or Setup) or entity (for example Unit or Circuit).
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual 4.2.4 Pumps This page resumes all setting for the water pumps management. For more details about this parameters and the pump control logic refer to section 5.1.6.
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual network. This can be done in this page. Please contact your IT department for further information on how to set the following setpoints.
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual are activated according to Operating mode and Dual Setpoint selection. All default setpoint with their ranges are reported in the table below.
Page 35
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual [ Setpoint - Stage Up DT ÷ Setpoint + Stage Down DT ] The following table summarize the conditions for compressors start and shut down explained above.
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual 5.1.5 Alarm Settings Factory defaults are set for standard cooling mode, therefore they may not be properly tuned when working at different conditions.
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual When the unit is configured as Heat Pump with water inversion the controller inverts the functioning of the pumps.
Page 38
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual Setpoint Reset by External 4-20 mA Signal The active setpoint is calculated applying a correction based on an external 4-20mA signal.
Page 40
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual With the Q0 switch in this position the unit is disabled. Pump will not start in normal operational condition.
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual Evap Recirc Unit is running the evaporator pump to equalize the water temperature in the evaporator.
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual If the circuit is allowed to start, the starting sequence is initiated. Starting sequence is described in a simplified version with the following flowchart.
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual The controller also provides two digital contact (one per circuit) that can be used to enable the remote condensers or the condensing pumps.
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual 6 Alarms The UC protects the unit and the components from operating in abnormal conditions. Protections can be divided in preventions and alarms.
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual LwtReset Alm 6.1.1.3 Bad Demand Limit Input Signal This alarm can occurs only when the function Demand Limit is enabled (see section 4.9.1).
Page 49
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual Bell icon is moving on controller’s Check if LEDs are both green.
Page 50
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual This alarm is generated in case of problems with the power supply to the chiller. This alarm can occur only if the PVM is enabled (see section 4.9.1)
Page 51
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual High Pressure: when unit works as chiller or as heat pump with water inversion...
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual Check for correct plug-in of the electrical connectors.
Page 54
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual EEXV is not working correctly.
Page 55
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual Check the correct operation of the electronic expansion valve.
Page 56
EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers Water cooled scroll chillers & heat pump Operation EWLQ090G ÷ EWLQ720L - R410a - Condenser less EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers Manual 6.1.6.7 No Pressure Change At Start alarm This alarm indicates that the compressor is not able to start or it is not able to create a minimum variation of the evaporating or condensing pressures after start.
Page 58
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.
Need help?
Do you have a question about the EWWQ090G and is the answer not in the manual?
Questions and answers