32
Service manual
Daikin R32 Rooftops UATYA-B
ESIE21-02 – 2021.03
3.9 Room ventilation
Unit start-up causes activation of the ventilation system.
After ventilation is started on the delivery side and, where provided, on the return side, the controller authorises start-up of
the other components, depending on the temperature regulation requirement.
When the unit is switched off, the fans are the last devices to stop after the delay time set on the controller has elapsed.
The controller features functions that are designed to control ventilation in the room by setting the fan speed. These fun
-
ctions take as reference the temperatures, flow rates or pressures.
3.9.1 Ventilation in delivery line
The table shows the ventilation parameters for the various functions connected.
Parameter Min
Max
UM
Description
FA3
0
999
s
Unit switch-off duration
FA4
0
999
s
Ventilation deactivation delay in unit switch-off
FA5
0
999
s
Unit switch-on duration without external air damper
FA6
0
999
s
Unit swicth-on duration with external air damper
FA7
0
100
%
Minimum speed
FA8
15
100
%
Maximum speed
FA9
0
100
%
Manual override (0 = Disabled)
FA11
375
900
10 m
3
/h Fixed speed in de-humidification mode (0 = Disabled)
FA19
0
999
s
Thermoregulation delay in cooling / heating / humidification mode from unit
On
FA20
0
999
s
Fast restart - Thermoregulation delay in cooling / heating / humidification
mode from unit On
FA25
375
900
10 m
3
/h Leak detector - Flow rate setpoint
FA26
375
900
10 m
3
/h Constant air flow control - Flow rate setpoint
FA27
0
900
10 m
3
/h Constant air flow control - Min. flow rate setpoint
FA28
375
9999
10 m
3
/h Constant air flow control - Max. flow rate setpoint
FA33
10.0
100.0
Pa
Constant pressure control - Pressure setpoint
FA34
0.0
100.0
Pa
Constant pressure control - Min. pressure setpoint
FA35
10.0
3270.0 Pa
Constant pressure control - Max. pressure setpoint
FA36
0.0
3270.0 Pa
Constant pressure control - Neutral area
FA37
0.0
3270.0 Pa
Constant pressure control - Differential required for decrement
FA38
0.0
3270.0 Pa
Constant pressure control - Differential required for increment
FA39
15
999
s
Constant pressure control - Max. increment time
FA40
0
60
s
Constant pressure control - Min. increment time
FA41
15
999
s
Constant pressure control - Max. decrement time
FA42
0
60
s
Constant pressure control - Min. decrement time
FA43
1
100
%
Constant pressure control - Max. increment amplitude
FA44
0
5
%
Constant pressure control - Min. increment amplitude
FA45
1
100
%
Constant pressure control - Max. decrement amplitude
FA46
0
5
%
Constant pressure control - Min. decrement amplitude
FA47
0
9999
10h
Threshold for “fan operating hours exceeded” alarm (0 = Disabled)
FA49
-50.0
50.0
Pa
Constant pressure difference control - Pressure delta setpoint
FA50
-3270.0 50.0
Pa
Constant pressure difference control - Min. pressure difference setpoint
FA51
-50.0
3270.0 Pa
Constant pressure difference control - Max. pressure difference setpoint
FA52
0.0
3270.0 Pa
Constant pressure difference control - Neutral area
FA53
0.0
3270.0 Pa
Constant pressure difference control - Differential required for decrement
FA54
0.0
3270.0 Pa
Constant pressure difference control - Differential required for increment
FA55
15
999
s
Constant pressure difference control - Max. increment time
FA56
0
60
s
Constant pressure difference control - Min. increment time
FA57
15
999
s
Constant pressure difference control - Max. decrement time
FA58
0
60
s
Constant pressure difference control - Min. decrement time
FA59
1
100
%
Constant pressure difference control - Max. increment amplitude
FA60
0
5
%
Constant pressure difference control - Min. increment amplitude
FA61
1
100
%
Constant pressure difference control - Max. decrement amplitude
3 Software functions
Summary of Contents for UATYA-B
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