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79
Functions k.air +030220981 rel. 1.2 - 01.12.2020
R if D escription D ev Min Max UoM D ir Modbus BAC net
FANS
Ba06 Air fl ow switch check type: 0=none; 1=common; 2=separated; 0 0 3 - R/W HR1494 PIV2995
Air fl ow check type 0 0 2 - R/W HR1495 PIV2996
Number of retry after return or supply air fl ow switch error detected
during start up procedure before turn off the unit 3 0 9 - R/W HR1496 PIV2997
Timeout for air fl ow switch detection (seconds) 15 1 999 s R/W HR1497 PIV2998
Air fl ow switch alarm delay time in running mode (s) 3 0 999 s R/W HR1498 PIV2999
Ba09 Air fl ow check pressure threshold 50.0 0.0 9999.0 Pa R/W HR1499 AV3000
Priority between minimum ventilation and night free cooling
(FALSE: minimum ventilation; TRUE: free cooling) FALSE 0 1 - R/W CS249 BV249
Tab. 9.am
9.18.3 F an speed in the event of control probe alarm
In the event of a control probe alarm (diff erential pressure or air quality probe), the supply/return fans are forced on at a fi xed
speed, which can be set by parameter.
R if D escription D ev Min Max UoM D ir Modbus BAC net
FANS
Bb01 Supply fan request in case of air pressure probe error 25.0 0.0 100.0 - R/W HR1563 AV3063
Bc01 Return fan request in case of air pressure probe error 35.0 0.0 100.0 - R/W HR1470 AV2976
Tab. 9.an
9.18.4 N ight freecooling and ventilation
At night, based on set start and end times, the minimum ventilation and/or freecooling functions can be enabled. If the condi-
tions for enabling both functions are met, it is possible to decide which of the two will be activated, setting the priority:
1. if night freecooling is activated, the fans can be forced on at maximum speed;
2. if night ventilation is activated, the maximum fan speed limit can be set, so as to attenuate the noise level.
R if D escription D ev Min Max UoM D ir Modbus BAC net
FANS
Ba18 Enable night minimum ventilation FALSE 0 1 - R/W CS248 BV248
Night minimum ventilation: starting hour 22 0 23 h R/W HR1501 PIV3002
Night minimum ventilation: starting minutes 0 0 59 min R/W HR1502 PIV3003
Night minimum ventilation: ending hour 6 0 23 h R/W HR1503 PIV3004
Night minimum ventilation: ending minutes 0 0 59 min R/W HR1504 PIV3005
Ba21 Night minimum ventilation request 50.0 0.0 100.0 - R/W HR1505 AV3006
Priority between minimum ventilation and night free cooling
(FALSE: minimum ventilation; TRUE: free cooling) FALSE 0 1 - R/W CS249 BV249
Tab. 9.ao
9.18.5 F ilters
k.air can manage the following fi lters:
• Supply fi lter 1 alarm
• Supply fi lter 2 alarm
• Return fi lter alarm
• Filter alarm
• HEPA fi lter 1 alarm (diff erential pressure transducer)
• HEPA fi lter 2 alarm (diff erential pressure transducer)
R if D escription D ev Min Max UoM D ir Modbus BAC net
U N IT
Ac16 Filters confi guration 0 0 6 - R/W HR1305 PIV2813
HEPA Filter confi guration (0: None; 1: Filt 1; Filt 1 & 2) 0 0 2 - R/W HR1306 PIV2814
Tab. 9.ap