22
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 button, and 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).
100
90
80
T_CH_High_foot
70
T_out_min
60
50
T_out_max
40
30
20
10
0
25
20
15
10
5
0
-5
-10
-15
-20
T_CH_High
Delivery temperature (° C)
CLIMATIC CURVE
HIGH TEMPERATURE CIRCUIT
HEATING
REQUIREMENT
External temperature (° C)
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).
Delivery temperature (° C)
100
90
80
CLIMATIC CURVE
LOW TEMPERATURE CIRCUIT
T_CH_ Low_foot
70
T_
HEATING
REQUIREMENT
out_min
60
50
T_out_max
40
30
20
10
0
25
20
15
10
5
0
-5
-10
-15
-20
External temperature (° C)
T_CH_Low
Figure 22
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.
