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56
AST 14 C 255/00
With P57=3
(ambient probe and external probe modulation)
flow set-point value is calculated
according to the external probe and to the selected curve (as with P57=2), plus the
following value:
∆
Tflow = Curve*K*
∆
Tambient
where,
∆
Tflow = value to be added to the calculation of flow with external probe;
Curve = curve set value (P10)
K = constant indicating ambient probe weight given by parameter P58 (default 8)
∆
Tambient = difference between set temperature and temperature read by the ambient
probe.
WARNING: flow temperature value will anyway be limited within the maximum limit,
whatever the result of the calculation may be: 78°C (standard range) or 45°C (reduced
range).
THERMOREGULATION WITH EXTERNAL PROBE
The external temperature probe to be connected will automatically modify the heating flow
water temperature according to:
- the measured
external temperature
;
- the selected
thermoregulation curve
(parameter P10);
- the
fictitious ambient temperature
setting
(for the zones not managed by the ambient
probe)
;
- the
day/night temperature
selected by the heating programme
(for the zones not
managed by the ambient probe)
.
The thermoregulation curve is selected by means of parameter P10 (value from 0 to 3),
whereas the fictitious room temperature is selected with the “heating” keys.
