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Beretta Mynute Green E 25 C.S.I. Manual Para El Instalador Y El Usuario página 12

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on the type of system). It is carefully calculated by the installer on the
basis of the following formula:
Design delivery temp - Tshift
KT =
20 - Design min outside temp
Tshift = 30 °C standard system
25 °C floor system
If the calculation produces an intermediate value between two
curves, you are advised to choose the compensation curve nearest
the value obtained.
Example: if the value obtained from the calculation is 1.3, this is be-
tween curve 1.0 and curve 1.5. Choose the nearest curve, i.e. 1.5.
Selection of the KT must be made by acting on the P3 trimmer on the
card (see multi-wire electrical diagram).
To access P3:
1.
remove the shell,
2.
turn the instrument panel upside down
- remove the electrical parts inspection cover, undoing the 2 fixing
screws
Live electrical parts (230 Vac).
The following KT values can be set:
- standard system: 1.0 - 1.5 - 2.0 - 2.5 - 3.0
- floor system: 0.2 - 0.4 - 0.6 - 0.8
and they will be shown on the display for about 3 seconds after the
P3 trimmer is turned,
Design minimum
Location
outside temperature
Turin
Alexandria
Asti
Cuneo
Alta valle Cuneese
Novara
Vercelli
Aosta
Valle d'Aosta
Alta valle Aosta
Genoa
Imperia
La Spezia
Savona
Milan
Bergamo
Brescia
Como
Como Province
Cremona
Mantua
Pavia
Sondrio
Alta Valtellina
Varese
Trento
Bolzano
Venice
Belluno
Padua
Rovigo
Treviso
Verona
Verona lake area
Verona mountain area
Based on experience, the installer can still choose different curves.
12
Location
-8
Vicenza
-8
Vicenza highlands
-8
Trieste
-10
Gorizia
-15
Pordenone
-5
Udine
-7
Lower Carnia
-10
Upper Carnia
-15
Tarvisio
-20
Bologna
0
Ferrara
0
Forlì
0
Modena
0
Parma
-5
Piacenza
-5
Piacenza Province
-7
Reggio Emilia
-5
Ancona
-7
Macerata
-5
Pesaro
-5
Florence
-5
Arezzo
-10
Grosseto
-15
Livorno
-5
Lucca
-12
Massa
-15
Carrara
-5
Pisa
-10
Siena
-5
Perugia
-5
Terni
-5
Rome
-5
Frosinone
-3
Latina
-10
Rieti
TYPE OF HEAT REQUEST
If an ambient thermostat is connected to the boiler (JUMPER 6
not on) (fig. 40)
The heat request is made by the closure of the room thermostat con-
tact, while the opening of the contact produces a switch-off. The de-
livery temperature is automatically calculated by the boiler, although
the user may interact with the boiler. Using the interface to modify the
HEATING, you will not have the HEATING SET-POINT value availa-
ble, but a value that you can set as preferred between 15 and 25°C.
The modification of this value will not directly modify the delivery tem-
perature, but will automatically affect the calculation that determines
the value of that temperature, altering the reference temperature in
the system (0 = 20°C).
If an hourly timer is connected to the boiler (JUMPER JP6 not
on) (fig. JP6 41)
With the contact closed, the heat request is made by the delivery
probe, on the basis of the external temperature, to obtain a nominal
ambient temperature on DAY level (20°C). The opening of the con-
tact does not produce a switch-off, but a reduction (parallel transla-
tion) of the climatic curve on NIGHT level (16°C).
This will activate the night time function.
The delivery temperature is automatically calculated by the boiler,
although the user may interact with the boiler.
Using the interface to modify the HEATING, you will not have the
HEATING SET-POINT value available, but a value that you can set
as preferred between 15 and 25°C.
The modification of this value will not directly modify the delivery tem-
perature, but will automatically affect the calculation that determines
the value of that temperature, altering the reference temperature in
the system (0 = 20°C for DAY level, and 16°C for NIGHT level).
Design minimum
outside temperature
-5
Viterbo
-10
Naples
-5
Avellino
-5
Benevento
-5
Caserta
-5
Salerno
-7
L'Aquila
-10
Chieti
-15
Pescara
-5
Teramo
-5
Campobasso
-5
Bari
-5
Brindisi
-5
Foggia
-5
Lecce
-7
Taranto
-5
Potenza
-2
Matera
-2
Reggio Calabria
-2
Catanzaro
0
Cosenza
0
Palermo
0
Agrigento
0
Caltanissetta
0
Catania
0
Enna
0
Messina
0
Ragusa
-2
Syracuse
-2
Trapani
-2
Cagliari
0
Nuoro
0
Sassari
2
-3
Design minimum
Location
outside temperature
-2
2
-2
-2
0
2
-5
0
2
-5
-4
0
0
0
0
0
-3
-2
3
-2
-3
5
3
0
5
-3
5
0
5
5
3
0
2

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