Beretta EXCLUSIVE BOILER GREEN HE 35 B.S.I. Manual Para El Instalador Y El Usuario página 21

IF A PROGRAMMABLE TIMER IS CONNECTED TO THE
BOILER, SET PARAMETER 51 = 1 (graph 3).
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
reduces (parallel shift) the temperature curve to the NIGHT level
(16 °C). Though delivery temperature is automatically calculated
by the boiler, the user may manually override it.
By modifying HEATING on the user interface, the HEATING SET
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
system (0 = 20 °C for DAY level; 16 °C for NIGHT level).
CONNECT AT/BT
In case of using CONNECT AT/BT, accessory supplied on request,
the boiler gives the possibility to choose 2 thermoregulation curves:
- OTC 1 CH (parameter 45) for a direct system
- OTC 2 CH (parameter 47) for a mixed system.
Even in case of second circuit (2CH) the curve depends on the
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
Parameters 31 and 32 give the possibility to define the maximum
and the minimum central heating set-point of the second circuit.
To correct the curve in this configuration, please refer to the
instructions supplied with the accessory.
15 - SERIAL NUMBER PLATE
DHW operation
CH operation
Qn
nominal capacity
Pn nominal power
Qm
minimum capacity
IP
protection level
Pmw
DHW maximum pressure
Pms
CH maximum pressure
T
temperature
D
specific capacity
NOx NOx value class
THERMOREGULATION CURVES
CURVE DI TERMOREGOLAZIONE
100
90
80
70
60
50
40
30
20
20 15 10
TEMPERATURA ESTERNA (°C)
EXTERNAL TEMPERATURE (°C)
P21 = MAXIMUM HEATING SET POINT
P22 = MINIMUM HEATING SET POINT
P21 = MASSIMO SET POINT RISCALDAMENTO
P22 = MINIMO SET POINT RISCALDAMENTO
TEMPERATURE CURVE CORRECTION
90
80
70
60
50
40
30
°
°
20
10
30 25 20 15
EXTERNAL TEMPERATURE (°C)
PARALLEL NIGHT REDUCTION
90
80
DAY
70
temperature curve
60
50
40
30
20
10
20 15 10
EXTERNAL TEMPERATURE (°C)
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
GRAPH 1
37,5 35 32,5 30 25
40 27,5
5 0 -5 -10
GRAPH 2
°
10 5 0 -5 -10
GRAPH 3
NIGHT
temperature curve
5 0 -5 -10
Qn Qm
COD. 80-60 °C 80-60 °C
Qn (Hi) =
kW
Pn = kW
ENGLISH
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
kW
kW kW
21