Handleiding
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EWWQ090G ÷ EWWQ720L - R410a - Water-cooled scroll chillers
EWLQ090G ÷ EWLQ720L - R410a - Condenser less
EWHQ100G ÷ EWHQ400G - R410a - Heat pump scroll chillers
EWAQ- - R410a - Air-cooled scroll chillers
EWAQ-G - R410a - Air-cooled scroll chillers
EWYQ- - R410a - Air-cooled scroll heat pumps
Air and Water cooled scroll chillers & heat pump
Operation
Manual
Operation Manual
10
EWWQ - EWLQ - EWHQ
EWAQ - EWYQ
Air or Water cooled scroll chiller &
heat pump
D-EOMHW00106-15EN
Condenser Pump #1 start (W/C only)
520,521
NO digital output (24…230 Vac ext supply)
Condenser Pump #2 start (W/C only)
540,541
NO digital output (24…230 Vac ext supply)
Demand Limit
888, 889
4-20 mA analog input
Setpoint Override
886, 887
4-20 mA analog input
Condenser three way valve (W/C only)
772, 773
0-10V analog output
Condenser tower fan speed (W/C only)
772, 774
0-10V analog output
Master/Slave Water Temperature
890, 896
NTC10K temperature sensor
Master/Slave Bus Connection
900, 901
Serial communication
1.7.1.1 Flow Switch
Although the flow switch is offered as an optional, it is mandatory to install one and connect it to
the digital input terminals in order to enable chiller operation only when a minimum flow is sensed.
Operating the unit by-passing the flow switch input or without an appropriate flow switch may
damage the water heat exchanger due to freezing. Operation of the flow switch must be checked
prior to start up the unit.
1.7.1.2 Double setpoint
This contact can be used to switch between two different LWT setpoints and, depending on the
application, between different modes of operation.
Ice operation must be selected in case of ice storage application. In this case the UC will run the
chiller in on/off mode switching all the chiller off as soon as the setpoint is reached. In this case the
unit will run to full capacity and then will switch off applying an ice delay different chiller starts.
1.7.1.3 External Fault (optional)
This contact is available to report to the UC a fault or a warning from an external device. It could be
an alarm coming from an external pump to inform the UC of the fault. This input can be configured
as a fault (unit stop) or a warning (displayed on the HMI without any action on the chiller).
1.7.1.4 Remote On-Off
This unit can be started through a remote enable contact. The Q0 switch must be selected to
“Remote”.
1.7.1.5 General Alarm
In case of a unit alarm, this output is closed thus indicating a fault condition to an externally
connected BMS.
1.7.1.6 Evaporator Pump Start
Two digital outputs are enabled when the pumps (#1 or #2) are required to start. The output for the
pump #2 requires a relay with less than 20 mA excitation current.
1.7.1.7 Setpoint override (optional)
This input allows to apply an offset on the Active Setpoint to adjust the operating point of the
ELWT. This input can be used to maximize the comfort.
1.7.1.8 Demand Limit (optional)
This input allows to limit the maximum number of compressor in run state.
Bekijk gratis de handleiding van Daikin EWAQ-G-SS, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Daikin |
| Model | EWAQ-G-SS |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 11467 MB |
