12
INTRODUCTION
4.10
Setting the heating parameters and outdoor reset
Parameter 1 establishes the boiler's various heating operation
modes.
Mode 0
(Operation with a room thermostat/heat demand and fixed heating
setpoint)
In this mode, the boiler operates with a fixed set-point (controlled
by the parameter 3) based on whether the room/heat demand
thermostat's contact is closed or not.
The set-point value can be entered directly, without entering the
parameter list, by accessing the “CH” menu in the following way:
Press MENU and select "Central heating" using the
▲
/
▼
buttons.
Press the
●
button to confirm.
“
Menu
”
“
Central Heating (CH)
”
“
Domestic Hot Water (DHW)
”
“
Information
”
“
Settings
”
After the selection, use the
►
button to highlight the value and use
the
▲
/
▼
buttons to change the selected value. Press the
●
button
to confirm/save the new settings.
“
Central Heating (CH)
”
“
CH Setpoint
”
142.7
“
°F
”
The set point can be set within a minimum and maximum value as
indicated respectively on Par. 23 and 24 as shown in the following
figure.
NOTE
: The outdoor temperature sensor (sold as an accessory) is not
required and if connected the outdoor temperature that is mea-
sured does not influence the setpoint that has been set.
The parameters regulating such temperature are:
Par.
No. Description
3
Sets the desired supply temperature with heating mode.
Active for the heating mode Par. 1 = 0 or 3
23
Limits the minimum value that can be assigned to the
set-point in heating mode (does not apply to heating
mode 4).
24
Limits the maximum value that can be assigned to the
set-point in heating mode (does not apply to heating
mode 4).
Supply Temp.
°F (°C)
Outdoor Temp. °F (°C)
Tset min °F (°C)
Tset max °F (°C)
Setpoint
Par. 24
Par. 23
Par. 03
Mode 1
(Climatic functioning with room/heat demand thermostat, variable
set point according to the outdoor temperature)
In this case the boiler operates with a variable set-point depending
on outdoor temperature, based on a climatic curve defined by the
following parameters:
Par.
No. Description
109 Defines the value of the set point calculated in climatic
mode (Par. 1 = 1).
19
Establishes the max. set-point at the minimum outdoor
temperature for climatic regulation
20
Establishes the minimum outdoor temperature to which
the maximum set-point can be associated for climatic
regulation
21
Establishes the minimum set-point at the maximum out-
door temperature for climatic regulation
22
Establishes the maximum minimum outdoor temperature
to which the minimum set-point can be associated for
climatic regulation
23
Limits the minimum value that can be assigned to the
set-point in heating mode (does not apply to heating
mode 4).
24
Limits the maximum value that can be assigned to the
set-point in heating mode (does not apply to heating
mode 4).
25
Defines the temperature at which climatic regulation is
switched off
