68
COMMISSIONING AND MAINTENANCE
Mode 2
(Working on climatic mode with attenuation controlled by a
room/heat demand thermostat, variable set point according to
the outdoor temperature)
In this case the thermal module operates with a set-point de-
fined by the climatic curve (which can be set in the same way as
described in Mode 1) depending on outdoor temperature. Heat
demand is actioned independently from whether the room/
heat demand thermostat's contact is closed and stops only
when the outdoor temperature is greater than the one defined
by the parameter 25.
In this mode the parameter 28 defines by how many degrees
the set-point is decreased (attenuation) when the room/ heat
demand thermostat's contact is opened.
Par.
No. Description
109 Defines the value of the set point calculated on climat-
ic mode (Par. 1 = 1).
19
Establishes the max. set-point at the minimum out-
door 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
outdoor temperature for climatic regulation
22
Establishes the maximum minimum outdoor tempera-
ture to which the minimum set-point can be associat-
ed 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
28
Use the heating mode Par. 1= 2 or 3. Defines how many
degrees the flow set point is lowered.
Delivery Temp.
(°C)
Outdoor Temp. (°C)
Tset min (°C)
Tset max (°C)
Par. 109
Par. 24
Par. 23
Par. 20
Par. 22
Par. 25
Par. 19
Par. 109
Par. 28
Par. 21
Mode 3
(Continuous fixed set-point operation with attenuation con-
trolled by room/heat demand thermostat)
In this mode the fixed set-point is adjusted in the same way
as described for Mode 0. The difference consists in the fact that
the demand is always active and the set-point is decreased (at-
tenuation) by the value defined by the parameter 28 when the
room/heat demand thermostat's contact is opened.
Par.
No. Description
3
Sets the desired flow temperature with heating mode.
Active for the heating mode Par. 1 = 0 o 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).
28
Use the heating mode Par. 1= 2 or 3. Defines how many
degrees the flow set point is lowered.
Delivery Temp.
(°C)
Outdoor Temp. (°C)
Tset min (°C)
Tset max (°C)
Setpoint @TA=ON
Par. 24
Par. 23
Par. 28
Par. 03
Attenuation setpoint
@TA=OFF
9
The outdoor temperature sensor (accessory) is not required
and if connected the outdoor temperature that is measured
does not influence the setpoint that has been set.
Mode 4
(Set-point adjustment based on a 0-10V analogical input)
The parameters that control this mode are the following:
Par.
No. Description
110
Sets the minimum delivery temperature value in heat-
ing mode (Par. 1) = 4.
111
Sets the maximum delivery temperature value in heat-
ing mode (Par. 1) = 4.
The operation set-point is adjusted on the basis of the following
curve:
1.5
1.0
2.0
10
0
OFF
ON
ON/OFF
Hysterese
Temperature
(°C)
Voltage (V)
Par. 111
Par. 110
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