Daikin UATYA-B, Operation Manual

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Service manual Daikin R32 Rooftops UATYA-B
ESIE21-02 – 2021.03
4.3 Function alarms
Alarms linked to the functions managed by the controller are described below.
4.3.1 Fire/smoke alarm
When the controller senses special conditions in the room, it behaves accordingly, based on the set parameters. The room
conditions are detected by sensors installed in the room and the sensed information is sent to the controller through digital
inputs.
The parameters involved are shown in the table.
The values of the parameters are representative. In specific cases, different values can be set.
Parameter Value UM Description
PAL43 5 s Fire/Smoke - Activation delay
PAL44 1 s Fire/Smoke - De-activation delay
PAL45 0 - Fire/Smoke - Max. number of alarms per hour
PAL46 0 - Fire/Smoke - Action in presence of an alarm
The values parameter “PAL46” can have are the following:
- 0 = warning message only;
- 1 = full unit stop;
- 2 = unit stop, excluding ventilation unit.
Fire/smoke alarm
Alarm code AL159
Reason for activation When the relevant digital input is open after the delay setpoint in parameter “PAL43”
Reset Upon closing of the digital input after the delay set in parameter “PAL44”
Reset mode Automatic; switches to manual after the trip occurrences per hour set in “PAL45”
Alarm icon Flashing
AlarmLog Yes
Alarm relay Based on “alarm.conf” file
Devices Behaviour in the event of an alarm
All devices According to setpoint in parameter “PAL46”
Fire damper Closing of digital output for fire damper control
4 Alarms