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4.3 Unit Mode
The Unit Mode is used to define if the chiller is working to produce chilled or heated water. Current mode is reported in
the main page to the item Unit Mode.
Depending on the unit type, different operating modes can be selected entering, with maintenance password, in the Unit
Mode menu. In the table below are listed and explained all modes.
Parameter
Range
Description
Unit Range
Mode
Cool
Set if chilled water temperature up to 4°C is required. No glycol is generally
needed in the water circuit, unless ambient temperature may reach low
values.
A/C
Cool
w/Glycol
Set if chilled water temperature below 4°C is required. This operation
requires proper glycol/water mixture in the evaporator water circuit.
A/C
Cool/Ice
w/Glycol
Set in case a dual cool/ice mode is required. The switch between the two
modes is performed using the contact physical Double Setpoint.
Double Setpoint opened: the chiller will work in cooling mode with the Cool
LWT being as the Active Setpoint.
Double Setpoint closed: The chiller will work in Ice mode with the Ice LWT
as the Active Setpoint.
A/C
Ice
w/Glycol
Set if Ice storage is required. The application requires the compressors to
operate at full load until the ice bank is completed, and then to stop for at
least 12 hours. In this mode the compressor(s) will not operate at part load
but will work only in on/off mode.
A/C
Test
Enables the Manual Control of the unit. The manual test feature helps in
debugging and checking the operational status of actuators. This feature is
accessible only with the maintenance password in the main menu. To
activate the test feature is required to disable the Unit from the Q0 switch
and change the available mode to Test.
A/C
Energy
Saving
No, Yes
Disable/Enable of the energy saving function
Like the On/Off and setpoint control, also the unit mode can be modified from network.
4.3.1 Energy Saving mode
Some unit types provide the possibility to enable an energy saving function, that reduces the power consumption
deactivating the compressors crankcase heater, when the chiller is Disabled.
This mode implies that the time needed to start the compressors, after an Off period, could be delayed until a maximum of
90 minutes.
For time critical application, the energy saving function can be disabled by the user to ensure the compressor start within
1 minute from unit On command.
Bekijk gratis de handleiding van Daikin EWAH920TZSLB2, 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 | EWAH920TZSLB2 |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 11657 MB |
