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ADJUSTING THE FUNCTIONAL PARAMETERS
9 ADJUSTING THE FUNCTIONAL PARAMETERS
The heating functions can be set for the high temperature, low
temperature and DHW circuits based on the system require-
ments by setting the functional parameters.
The first three parameters can be accessed on the user level,the
others can be accessed only by personnel from the authorized
Technical Assistance Service R.
To access the user parameters, press the
following values will be displayed in order:
− manifold delivery temperature T1
− DHW temperature T3
− low temperature circuit delivery temperature T6.
To change the relative setpoints:
− press the "Set/esc" button: the relative value will appear,
the two digits on the right will flash
− press
and
until obtaining the required value. Press
"OK" to save the new value. The displayed value will stop
flashing after 3 sec and will be operative.
A detailed description of all the parameters and the factory pre-
set values can be found in the "Parameter list" chapter.
9.1 Setting the heating parameters
The following heating parameters can be set:
1
Setpoint_T_CH_High
High temperature circuit setpoint (parameter 1)
If the "fixed point" operating mode is set (par. 14=CH_type_
high=0), it is the target temperature.
If the "climatic control" operating mode is set (par. 14=1) , it is the
maximum target temperature with minimum outdoor tempera-
ture (T_out_min=par. 37, preset to 0°C).
parameter 18 (T_ch_high_foot, preset to 50°C) defines the min-
imum setpoint at maximum outdoor temperature (T_out_max-
=par. 38, preset to 18°C).
Preset to 70°C and upper value limited by par. 17 (T_ch_high_
limit, preset to 80°C).
HIGH TEMPERATURE CIRCUIT
100
90
T_CH_High_foot
80
70
T_out_min
60
50
T_out_max
40
30
20
10
0
25
20
15
10
External temperature (° C)
button, and the
CLIMATIC CURVE
HEATING
REQUIREMENT
T_CH_High
5
0
-5
-10
-15
Figure 21
2 Setpoint_T_CH_Low
Low temperature circuit setpoint (parameter 3)
If the "fixed point" operating mode is set (par. 22=CH_type_
low=0), it is the target temperature.
If the "climatic control" operating mode is set (par. 22=1) , it is the
maximum target temperature with minimum outdoor tempera-
ture (T_out_min=par. 37, preset to 0°C).
parameter 24 (T_ch_low_foot, preset to 25°C) defines the mini-
mum setpoint at maximum outdoor temperature (T_out_max-
=par. 38, preset to 18°C).
Preset to 40°C and upper value limited by par. 23 (T_ch_low_
limit, preset to 50°C).
100
90
80
70
T_CH_ Low_foot
60
50
T_
40
30
20
10
0
25
20
15
Therefore, it is possible to work with a fixed point or set a climat-
ic curve on every circuit.
3 CH_Priority
Heating priority (parameter 16)
If set to 0, the system will work without heating priority with the
high temperature and low temperature circuits served in par-
allel.
If set to 1, the demand from the low temperature circuit is ig-
nored and the relative pump remains off. The low temperature
circuit demand is only accepted when the high temperature cir-
cuit demand is inactive. Vice versa, if set to 2, the low tempera-
ture circuit has priority.
Preset to 0.
9.2 Setting the DHW parameters
The following DHW parameters can be set:
1
Setpoint_DHW
DHW setpoint (parameter 2)
This is the production temperature for DHW.
The maximum limit is indicated by par. 8 (T_DHW_limit, preset
to 60°C).
Preset to 50°C.
-20
22
CLIMATIC CURVE
LOW TEMPERATURE CIRCUIT
HEATING
REQUIREMENT
out_min
T_out_max
T_CH_Low
10
5
0
-5
-10
External temperature (° C)
-15
-20
Figure 22
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