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13. Post-heating battery logic
The post-heating battery can be used as battery for integration with the heating battery, as a post-heating battery following
a reduction in temperature due to dehumidification, or as an additional heating stage.
Post-heating can be carried out using a modulating valve (
004
=2), an on/off valve (
004
=4), a modulating resistance (
004
=1),
or an on/off resistance (
004
=3).
In addition, the post-heating battery uses the control sensor and the current operating setpoint for control.
In post-heating or in the additional heating stage, the battery uses the post-heating setpoint (parameter
179
) and is controlled
based on the supply temperature. In this case, an analogue input must be defined as a supply sensor:
019
=2 (AI1) or
021
=2
(AI2) or
023
=2 (AI3).
Through the parameter
005
the post-heating battery's operation is selected:
-
005
=0 post-heating only,
-
005
=1 integration and post-heating. In the latter case, if no dehumidification is active, the post-heating battery works in
integration mode; otherwise, in post-heating mode.
-
005
=2 additional heating stage.
The control is proportional if the battery is modulating or on/off in other cases. The parameter
180
represents the proportional
band or the hysteresis of the post-heating stage.
• Post-heating operation or additional modulating heating stage:
- post-heating (
005
=0) or additional heating stage (
005
=2) with valve:
004
=2 and
030
=7 (AO1) or
031
=7 (AO2) or
032
=7 (AO3).
- post-heating (
005
=0) or additional heating stage (
005
=2) with electrical resistance:
004
=1 and
030
=8 (AO1) or
031
=8 (AO2)
or
032
=8 (AO3).
100%
0%
Tsup
180
179
100%
0%
Treg
180
WHS
100%
0%
Treg
180
WHS
100%
0%
Tsup
180
179
Tsup: supply temperature:
019
=2 (AI1) or
021
=2 (AI2) or
023
=2 (AI3)
179
: post-heating setpoint
180
: proportional post-heating band
During control, the
(or
) icon is displayed if the signal applied to the valve (or the modulating resistance) is not equal to
0: Tsup<
179
.
The
(or
) icon is switched off if the signal applied to the valve (or the modulating resistance) is equal to 0 (Tsup>=
179,
)
and if the heating stage is also disabled.
• Post-heating operation or additional on/off heating stage:
- post-heating or additional heating stage with valve:
004
=4 and
025
=8 (DO1) or
026
=8 (DO2) or
027
=8 (DO3) or
028
=8 (DO4)
or
029
=8 (DO5).
- post-heating or additional heating stage with electrical resistance:
004
=3 and
025
=9 (DO1) or
026
=9 (DO2) or
027
=9 (DO3)
or
028
=9 (DO4) or
029
=9 (DO5).
100%
0%
Tsup
180
179
100%
0%
Treg
180
WHS
100%
0%
Treg
180
WHS
100%
0%
Tsup
180
179
Tsup: supply temperature:
019
=2 (AI1) or
021
=2 (AI2) or
023
=2 (AI3)
179
: post-heating setpoint
