Setting The Thermoregulation - Beretta METEO GREEN HE R.S.I. Installer And User Manual

METEO GREEN HE R.S.I.

23 - SETTING THE THERMOREGULATION

CHECKING THE CONNECTION WITH THE EXTERNAL PROBE
After connecting the external probe to the boiler, use the INFO function to
check that the probe has been automatically recognised by the temperature
control card. Immediately after installation, the value read by the probe may
very well be higher then that measured by a reference probe.
Enable and optimise the THERMOREGULATION function by setting the
following parameters:
PARAMETER
TYPE OF BUILDING
MAXIMUM HEATING SET
POINT
MINIMUM HEATING SET
POINT
ENABLE
THERMOREGULATION
FUNCTION
OFFSET TEMPERATURE
CURVE
TYPE OF HEAT REQUEST
To access the programming mode, consult "Programming parameters".
PARAMETER 03. Type of building
In order to calculate delivery temperature, the temperature control system
does not directly use the external temperature value but considers the heat
insulation of the building: in well-lagged buildings, external temperature
variations affect the ambient temperature less than they do in badly-lagged
buildings. Use parameter 3 to set the heat insulation level of the building
according to the following scheme:
Type of building
A
B
New Old
houses houses
A 19
B 20
C 19
D 18
PARAMETERS 21 and 22. Maximum and minimum delivery
temperature
These two parameters limit the delivery temperature automatically produced
by the TEMPERATURE CONTROL function. PARAMETER 21 determines
MAXIMUM DELIVERY TEMPERATURE (MAXIMUM HEATING SET POINT)
while PARAMETER 22 determines MINIMUM DELIVERY TEMPERATURE
(MINIMUM HEATING SET POINT).
32
AVAILABLE IN THE
PROGRAMMING MODE
INSTALLATION AND
3
CALIBRATION & SERVICE
21 INSTALLATION
22 INSTALLATION
44 INSTALLATION
INSTALLATION AND
45
CALIBRATION & SERVICE
51 INSTALLATION
C D
Hollow Solid
Stones
bricks bricks
14 12
16 15
15 14
12 10
PARAMETER 44. Enable thermoregulation function
The connected external temperature probe combined with PARAMETER 44
provides the following operating modes:
- EXTERNAL PROBE CONNECTED and PARAMETER 44 = 0 (OFF) in this
case the TEMPERATURE CONTROL function is disabled even though the
external probe is connected. The temperature read by the external probe
can always be viewed by pressing the INFO button. The TEMPERATURE
CONTROL symbols are not displayed.
- EXTERNAL PROBE CONNECTED, PARAMETER 44 = 1 (ON) in this case
the TEMPERATURE CONTROL function is enabled. The temperature read
by the external probe and the TEMPERATURE CONTROL symbols can
be viewed by pressing the INFO button.
The TEMPERATURE CONTROL function cannot be enabled unless the
external probe has been fitted and connected. In this case, PARAMETER
44 is ignored and has no effect on boiler operation.
PARAMETER 45. Choosing the offset temperature curve
(graph 1)
100
90
80
70
60
50
40
30
20
20 15
P21 = MAXIMUM HEATING SET POINT
P22 = MINIMUM HEATING SET POINT
The offset heating curve maintains a theoretical ambient temperature of
20°C at external temperatures ranging from +20°C to -20°C. The choice
of the curve depends on the rated minimum external temperature (on the
geographical area, therefore) and the rated delivery temperature (on the type
of system, therefore) and must be carefully calculated by the fitter using the
following formula:
P. 45 = 10 x
If, from your calculations, you obtain an intermediate value between two
curves, we suggest choosing the compensation curve closest to the value
obtained.
Example: if the value obtained from the calculations is 8, this is between
curve 7.5 and curve 10. In this case, choose the closest curve, which is 7.5.
8
PARAMETER 51. Type of heat request
11
IF AN AMBIENT THERMOSTAT IS CONNECTED TO THE BOILER, SET
PARAMETER 51 = 0 (graph 2)
9
5
TEMPERATURE CURVE CORRECTION
90
80
70
60
50
40
30
+5˚C
20
0˚C
10
30 25
GRAPH 1
THERMOREGULATION CURVES
37,5 32,5
40 35 30
10 5 0 -5
EXTERNAL TEMPERATURE (°C)
rated delivery T - 20
20- rated min. external T
GRAPH 2
-5˚C
20 15 10 5 0 -5
EXTERNAL TEMPERATURE (°C)
27,5 25 22,5
20
17,5
15
P.21
12,5
10
7,5
5
2,5
P.22
-10 -15 -20
-10 -15 -20