Riello Condexa PRO Series Installation, Technical And Maintenance Manual page 51

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.
Description
No.
Defines the value of the set point calculated on climat-
109
ic mode (Par. 1 = 1).
Establishes the max. set-point at the minimum out-
19
door temperature for climatic regulation
Establishes the minimum outdoor temperature to
20 which the maximum set-point can be associated for
climatic regulation
Establishes the minimum set-point at the maximum
21
outdoor temperature for climatic regulation
Establishes the maximum minimum outdoor tempera-
22 ture to which the minimum set-point can be associat-
ed for climatic regulation
Limits the minimum value that can be assigned to the
23 set-point in heating mode (does not apply to heating
mode 4).
Limits the maximum value that can be assigned to the
24 set-point in heating mode (does not apply to heating
mode 4).
Defines the temperature at which climatic regulation is
25
switched off
Use the heating mode Par. 1= 2 or 3. Defines how many
28
degrees the flow set point is lowered.
Delivery Temp.
(°C)
Par. 24
Par. 19
Par. 21
Par. 28
Par. 23
Par. 20
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.
Tset max (°C)
Par. 109
Par. 109
Tset min (°C)
Par. 22 Par. 25
Outdoor Temp. (°C)
Par.
Description
No.
Sets the desired flow temperature with heating mode.
3
Active for the heating mode Par. 1 = 0 o 3
Limits the minimum value that can be assigned to the
23 set-point in heating mode (does not apply to heating
mode 4).
Limits the maximum value that can be assigned to the
24 set-point in heating mode (does not apply to heating
mode 4).
Use the heating mode Par. 1= 2 or 3. Defines how many
28
degrees the flow set point is lowered.
Delivery Temp.
(°C)
Par. 24
Par. 03
Par. 28
Par. 23
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.
Description
No.
Sets the minimum delivery temperature value in heat-
110
ing mode (Par. 1) = 4.
Sets the maximum delivery temperature value in heat-
111
ing mode (Par. 1) = 4.
The operation set-point is adjusted on the basis of the following
curve:
Temperature
(°C)
Par. 111
Par. 110
0 1.0
ON/OFF
OFF
Hysterese
51
COMMISSIONING AND MAINTENANCE
Tset max (°C)
Setpoint @TA=ON
Attenuation setpoint
@TA=OFF
Tset min (°C)
Outdoor Temp. (°C)
1.5 2.0 10
ON
Voltage (V)