Basic settings
BACnet object
R/RW
Note
De-icing supply fan flow
SpAirFlSuDeic
AVAL,181
RW
m3/h
De-icing exhaust fan flow
SpAirFlEhDeic
AVAL,226
RW
m3/h
De-icing supply fan pressure
SpPSuDeic
AVAL,196
RW
Pa
De-icing exhaust fan pressure
SpPExDeic
AVAL,232
RW
Pa
De-icing supply fan speed
SpFanSuSpdDeic
AVAL,208
RW
%
De-icing exhaust fan speed
SpFanEhSpdDeic
AVAL,295
RW
%
Special settings
BACnet object
R/RW
Note
Temperature drop for room /
extract humidity <= 20%
DiffTHuCmpDeic
AVAL,376
RW
K
Temperature for maximum off time
TDeicTiOffStt
AVAL,379
RW
°C
Maximum off time
TiOffDeicMax
PINTVAL,147
RW
sec.
Temperature for minimum off time
TDeicTiOffEnd
AVAL,380
RW
°C
Minimum off time
TiOffDeicMin
PINTVAL,148
RW
sec.
5.9.3.2 ERC supervision (passive, uncontrolled)
A mechanical failure on the ERC (heat exchanger dirty etc.) can be detected via
the efficiency of the heat exchanger. Therefore, the temperature difference
between extract air / room air and exhaust air is used. When the difference drops
below set value and stays below during set delay time, alarm is generated.
Detection function is active only when temperature difference between outside air
and extract air is more set limit.
When extract air temperature and exhaust air temperature are not available, the
supervision of the ERC is not possible.
Condenser pump fault signal can be configured to the unit.
Pump itself works autonomous and does not require any own logic. The fault signal
from this shall be connected to a digital potential free input at the controller. When
fault signal is received, bypass damper is closed.
The alarm class of these alarms can be configured as A-Alarm. B-Alarm or none.
Application functionalities
Energy Recovery
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