Beretta EXCLUSIVE BOILER GREEN HE 25 B.S.I. Manual Para El Instalador Y El Usuario página 21

When the contact is closed, the heat request is made by the
delivery probe on the basis of the external temperature in order
to maintain the rated ambient temperature at the DAY level (20
°C). When the contact opens, it does not stop the heat request but
(16 °C). Though delivery temperature is automatically calculated
by the boiler, the user may manually override it.
POINT will no longer be available but just a value that can be set
from +5 to –5°C as required.
Modifications to this value do not directly change delivery
temperature but affect the calculation made to automatically
determine its value by modifying the reference temperature of the
the boiler gives the possibility to choose 2 thermoregulation curves:
external minimum project temperature (on the geographical area,
therefore) and on the delivey project temperature (on the type of
system, therefore); the installer must to put attention to calculate
it using the following formula:
rated delivery T - 20
P. 47 = 10 x
20- rated min. external T
and the minimum central heating set-point of the second circuit.
instructions supplied with the accessory.
nominal capacity
nominal power
IP protection level
minimum pressure
Pmw
Pms
T temperature
D
NOx NOx value class
100
90
80
70
60
50
40
30
20
20 15 10
90
80
70
60
50
40
30
+ 5 C
0 C
20
10
30 25 20 15
90
80
70
temperature curve Curva climatica GIORNO
60
50
40
30
20
10
20 15 10
Via Risorgimento 13 - 23900 Lecco (LC) Italy
Serial N.
NOx:
230 V ~ 50 Hz W
Pmw = bar T= °C
IPX5D
D: l/min
Pms = bar T= °C
EXCLUSIVE BOILER GREEN HE B.S.I.
40 37,5 35 32,5 30 27,5 25
5 0 -5 -10
- 5 C
10 5 0 -5 -10
DAY
Curva climatica NOTTE
temperature curve
5 0 -5 -10
η
Qn Qm
80-60 °C
80-60 °C
Qn (Hi) =
Pn =
set at:
calibrado:
engestellt auf:
réglage:
22,5
20
17,5
15
P. 21
12,5
10
7,5
5
2,5
P. 22
-15 -20
-15 -20
-15 -20
Qn
50-30 °C
21