Daikin UAL-A Series, Engineering Data

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The control system has the following functions:
S/N Function S/N Function
1
Controlling the 2-way valve of the water system (relevant
accessories need to be purchase separately);
11
Timing
2 Anti-freeze protection for plate heat exchanger 12 Protection for Compressors in Operation
3 Alternative defrosting 13 Averaging Workload among Compressors
4
Manual defrosting
14 Failure alarm, viewing and output
5 2-way Valve Interlock Control 15 Memorizing parameters in the case of a power failure
6 Week Setting 16 Setting and resetting the operating parameters of the unit
7 Status display 17
Electric heater
8 Auto-startup at power on 18 Setting the clock of the system
9 Setting the serial number of a unit 19 Displaying the indoor and inlet water temperatures
10 Memorizing the clock settings in the case of a power failure
Settings
1) Parameter Viewing
The controller can be used to view the operation status and parameters of any unit connected to it.
Parameters can be view include operation status of the compressor, inlet/outlet water temperature, timer setting,
cooling antifreeze temperature setting, antifreeze temperature setting in winter, defrosting temperature, and so on.
After pressing the "UNIT" key, you can increase/decrease the blinking unit No. and view the parameters of the
current unit by pressing "▲" or "▼". To view more working parameters of a unit, you can press "OK" and "▲" or
"▼" after reaching the unit No.
2) Setting Parameters (parameters can be set only when the unit is turned off)
①
When you press "PASSWORD", the text box at the lower bottom of the LCD displays "Input password" and "00".
Then you can press "▲" or "▼" to change the number, and press "OK" after getting the correct password (the
default password set in factory is "55"). After you have chosen the correct password, the parameters to be set
blinks, and you can perform the following settings:
②
Change operation parameters: after choosing the correct password, you can change operation parameters by
following steps
②
→
③
→
④
.
Change password: after choosing the correct password, you can change the password by pressing
"PASSWORD" again. In this case, the text box displays "00" and you can change the number by pressing "▲"
or "▼". After reaching the number you want to set as the password, you can complete password setting and exit
the parameter setting mode by pressing ''OK".
After pressing the "UNIT" key, you can increase/decrease the blinking unit No. by pressing "▲" or "▼", and
set operation parameters (including inlet water temperature for cooling/heating mode) for the desired unit by
pressing "OK" after reaching the unit No. You can choose and set parameters by pressing "▲" or "▼" and then
press "OK" to save the setting.
Repeat step
②
to set other parameters (note: the controller quits the parameter setting mode if no key is
pressed within 60 seconds).
3) Real Time Setting
To set week and time, stick the small hole above the "MODE" key using a needle-like tool (the LCD displays
"Weekday Setting"); press "▲" or "▼" to choose the weekday; stick the small hole again to save weekday setting
(the LCD displays "Time Setting" and the time starts to blink); press "▲" to change the hour and "▼" to change the
minute; and stick the small hole again to save time setting.