Special settings
BACnet object
R/RW
Unit
TOa limitation for heating release
HLmCmf
AVAL,120
RW
°C
TOa limitation for cooling release
CLmCmf
AVAL,141
RW
°C
Setpoint heating protection
SpHPrt
AVAL,115
RW
°C
Setpoint cooling protection
SpcPrt
AVAL,138
RW
°C
Gain extract temperature control
GainTRCtr
AVAL,124
RW
%/K
Tn Extract temperature control
TnTRCtr
PINTVAL,74
RW
s
Use Extract temp. instead of room
EnTExCtl
BVAL,159
RW
0: TR
1: TEx
5.8.4 Fan heating/cooling influence
These functions can be deactivated if required, for example in case of duct
pressure control, see fan speed control 3.1
Extra heating sequence:
It may happen (e.g. due to device malfunction) that all activated/available heating
sequences are not sufficient to reach the TSu setpoint. In this case, the speed of
the exhaust and supply air fans can be reduced to introduce less cold air into the
heating elements. However, when all sequences are fully active and the setpoint is
still above the limits the speed is decreased to “unoccupied speed” level.
Extra cooling sequence when a cooling coil is configured:
It may happen (e.g. due to device malfunction) that all activated/available cooling
sequences are not sufficient to reach the TSu setpoint. In this case, the speed of
the exhaust and supply air fans can be reduced to introduce less warm air into the
cooling elements. However, when all sequences are fully active and the setpoint is
still above the limits the speed is decreased to “unoccupied speed” level.
Extra cooling sequence when no cooling coil is configured:
In case ventilation unit does not have any cooling coils configured, ERC cooling is
not released, and the TSu setpoint cannot be reached, then speed of exhaust and
supply fans is increased in order to maximize cooling effect. Fan speed deviation is
held, speed is increased up to maximum parameterized ventilation level.
Application functionalities
Air temperature control
5
90 | 170
A6V10733786_en_c
