Setting The Thermoregulation - Beretta Exclusive Green E C.S.I. Series Installer And User Manual

EXCLUSIVE GREEN E C.S.I. - R.S.I.

16 - 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 tem-
perature 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 houses
Hollow bricks
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).
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 tempe-
rature 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)
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
20- rated min. external T
28
C
Old houses
Solid bricks Stones
14 12
16 15
15 14
12 10
rated delivery T - 20
AVAILABLE IN THE PROGRAMMING MODE
3 INSTALLATION AND CALIBRATION & SERVICE
21 INSTALLATION
22 INSTALLATION
44 INSTALLATION
45 INSTALLATION AND CALIBRATION & SERVICE
51 INSTALLATION
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.
PARAMETER 51. Type of heat request
IF AN ROOM THERMOSTAT IS CONNECTED TO THE BOILER, SET
PARAMETER 51 = 0 (graph 2).
The room thermostat makes a heat request when its contact closes,
while it stops it when its contact opens. 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 boilers fitted with the S.A.R.A. Function, if the ROOM THERMOSTAT
D
remains closed for a long time, the boiler automatically increases the
delivery temperature which is added to the effect of the temperature
control function. When the ROOM THERMOSTAT opens, the boiler
automatically returns to the value determined by the TEMPERATURE
CONTROL function.
8
IF A PROGRAMMABLE TIMER IS CONNECTED TO THE BOILER,
11
9
SET PARAMETER 51 = 1 (graph 3).
5
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 tempe-
rature 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:
P. 47 = 10 x
- 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:
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.
rated delivery T - 20
20- rated min. external T