
85
Functions
k.air +030220981 rel. 1.2 - 01.12.2020
FROST PREVENTION
30220980_174_R01
ON
OFF
Antifreeze alarm
ON
OFF
0%
100%
A_fr_req_v
Heat/Cooling coil
0%
100%
Min_sp
Fan
0%
100%
Antifr_thr
AntEd
Low_s_thr
S_pr
Wd
Al_delay
P_vent_T
Key
S_pr
Supply probe
Antifr_thr
Frost protection activation threshold
AntEd
Frost protection deactivation threshold
A_fr_req_v
Frost protection heater request
P_vent_T
Post-ventilation time
Al_delay
Alarm delay
t
time
Ext/Exh_ damp
Fresh air/exhaust damper
Min_lim
Fresh air damper min limit
Fan
Fan
Min_sp
Minimum fan speed
Wd
Frost protection warning delay
Low_s_thr
Low temperature threshold
Fig. 9.ao
9.23.2
F
rost protection procedure when
OFF
If the frost protection alarm with automatic reset occurs, the unit immediately switches OFF. When OFF, if frost protection is
enabled, the coils are activated at a fi xed percentage.
R
if
D
escription
D
ev
Min
Max
UoM
D
ir
Modbus
BAC
net
U
N
IT
Ac54
Antifreeze temperature threshold
2.0
-50.0
20.0
°C
R/W HR1349
AV2857
Antifreeze ending delta
3.0
0.0
15.0
K
R/W HR1350
AV2858
Ac56
Anti freeze warning delay time
30
0
999
s
R/W HR1351
PIV2859
Antifreeze alarm delay time
5
0
999
s
R/W HR1352
PIV2860
Enable antifreeze during off state
FALSE 0
1
-
R/W CS229
BV229
Ac58
Prevent antifreeze threshold
5.0
-99.9
99.9
°C
R/W HR1353
AV2861
Tab. 9.ba
R
if
D
escription
D
ev
Min
Max
UoM
D
ir
Modbus
BAC
net
FANS
Bb03
Minimum fan speed during antifreeze
10.0
0.0
100.0
%
R/W HR1564
AV3064
Bc03
Return fan off set request
10.0
-100.0
100.0
-
R/W HR1471
AV2977
Tab. 9.bb
R
if
D
escription
D
ev
Min
Max
UoM
D
ir
Modbus
BAC
net
DA
M
P
E
RS
Da12
Heating coil request during antifreeze off status
50.0
0.0
100.0
%
R/W HR1664
AV3159
Db06
PreHeating coil request during antifreeze off status
50.0
0.0
100.0
%
R/W HR1673
AV3168
Dc06
PostHeating coil request during antifreeze off status
50.0
0.0
100.0
%
R/W HR1681
AV3176
Tab. 9.bc
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