40
In fig. 16 shows the curves for a fictitious ambient temperature value of 20 °C.
By changing the value of parameter P04, it is possible to select one of the curves shown in fig. 16. By modifying the fictitious temperature
as previously described, the selected curve moves up or down by the same amount.
With a fictitious ambient temperature equal to 20°C, for example, by choosing the curve corresponding to value 30, if the external
temperature is equal to -5°C, the delivery temperature will be equal to 70 °C.
By setting a fictitious ambient temperature of 23°C, again with an external temperature of -5°C, the delivery temperature will be 70°C +
(23°C - 20°C) = 73°C.
By setting a fictitious ambient temperature of 18°C, again with an external temperature of -5°C, the delivery temperature will be 70°C +
(18°C - 20°C) = 68°C.
20
15
Heating setpoint using the external temperature probe
Boiler adjustment setpoint in heating [°C]
10
5
0
-5
External temperature [°C]
-10
-15
20
-25
25
30
35
40
45
50
55
60
65
70
75
80
K = 9
K = 1
fig. 16
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