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Air cooled inverter water chiller
OPERATION
MANUAL
EWAD TZ B 160-700
Air cooled inverter water chiller
D-EOMAC00909-16EN
Operation Manual
11
Operating the unit by-passing the flow switch input or without an appropriate flow switch may
damage the evaporator due to freezing. Operation of the flow switch must be checked prior to start
up the unit.
1.6.1.2 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.
1.6.1.3 Current limit (optional)
This optional feature enables a capacity control of the unit in order to limit the input current. The
current limit feature is included in the Energy Meter option. The limiting signal will be compared
with a limiting value set on the HMI. By default the current limit setpoint is selected through the
HMI; an external 4-20 mA signal can be enabled to allow a remotely changeable setpoint.
1.6.1.4 External Fault
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).
1.6.1.5 Rapid Restart (optional)
Purpose of the rapid restart feature is to let the unit restart in the shortest possible time after a
power failure, and then recover in the shortest possible time (maintaining the reliability level of the
normal operations) the capacity it had before the power failure. The rapid restart is enabled by the
enable switch.
1.6.1.6 Remote On-Off
This unit can be started through a remote enable contact. The Q0 switch must be selected to
“Remote”.
1.6.1.7 General Alarm
In case of a unit alarm, this output is closed thus indicating a fault condition to an externally
connected BMS.
1.6.1.8 Compressor Status
The digital output is closed when the related circuit is in run state.
1.6.1.9 Alarm Circuit (optional)
This option is included with the “Rapid Restart” option. The related digital contact is closed in case
of alarm on a circuit.
1.6.1.10 Evaporator Pump Start
A 24 Vdc digital output (with internal supply) is enabled when a pump (#1 or #2) is required to start.
The output can be used to start an external pump (either at fixed or variable speed). The output
requires an external input or relay with less than 20 mA excitation current.
Bekijk gratis de handleiding van Daikin EWAD495TZPLB2, 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 | EWAD495TZPLB2 |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 11976 MB |
