point and controls the higher value plus an
additional value which you can determine by
using the function block parameter Tempera-
ture correction factor (default: 0.0 K). The
temperature correction factor improves the
control behavior of the downstream valves in
the heating circuit and compensates for line
losses. The information level shows only the
flow set point that is controlled.
If an external request is in the process of
being controlled, the
symbol appears in
the operating level.
The following operating cases are
differentiated:
4
Without outdoor sensor (CO1 F07-0):
The TROVIS 5431 Heating Controller ex-
clusively controls the external request for
downstream controllers as shown in
Fig. 11. During this operation, you can-
not set any times of non-use. The set point
is set in accordance with the request for
externally required signal between maxi-
mum and minimum flow temperature. In-
put signal values smaller than 1 V (12 °C)
mean no external request, the primary
valve is closed and the circulation pump
is deactivated.
4
With outdoor sensor (CO1 F07-1): The
TROVIS 5431 Heating Controller controls
a separate heating circuit (for system
code numbers 4 and 5 also a separate
drinking water heating circuit) and the
external request for downstream control-
lers as shown in Fig. 12. During this pro-
cedure, you can set the times of use.
Maximum and minimum flow temperature
only limit the set point for the controllers
own heating circuit. Higher set points of
downstream controllers are controlled,
with the separate heating circuit over-
heating. Requests for externally required
signals smaller than 1 V (12 °C) mean no
external request. The set point depends
on the controllers own heating circuit.
44
EB 5431 EN
Functional descriptions
Fig. 11
⋅
Processing of externally required signal without separate heating circuit
TROVIS 5431
TROVIS 54..
Summary of Contents for TROVIS 5431
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