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Heating/ Shared relays
Adjustment
Description
channel
Dem. 1
Demand 1
Relay
Relay option
Relay
Relay sub-menu
Output
Output selection
Boiler pr. min Option for boiler protection min
Tmin
Minimum boiler temperature
Boiler pr. max Option for boiler protection max
Tmax
Maximum boiler temperature
Sensor Boiler Boiler sensor selection
0-10 V
0-10 V option
0-10 V
0-10 V sub-menu
Tset 1
Lower boiler temperature
Volt 1
Lower voltage
Tset 2
Upper boiler temperature
Volt 2
Upper voltage
Permanent
Permanent voltage option
volt.
Volt
Permanent voltage value
Tmin
Minimum boiler temperature
Tmax
Maximum boiler temperature
Sen. Flow
Flow sensor option
Sensor
Flow sensor selection
Interval
Monitoring period
Hysteresis
Correction hysteresis
Correction
Correction of the voltage signal
Min. runtime Minimum runtime option
tMin
Minimum runtime
0-10 V option
If the 0-10 V option is activated, the sub-menu 0-10 V will appear, in which a 0-10 V
output can be allocated to the demand.
With this option, the controller can demand modulating heat generators equipped
with a 0-10 V interface.
26
Adjustment range /
Factory setting
selection
Activated, Deactivated Deactivated
Yes, No
No
-
-
system dependent
R4
Yes, No
No
10 ... 90 °C
55 °C
Yes, No
No
20 ... 95 °C
90 °C
system dependent
S3
Yes, No
No
-
-
10 ... 90 °C
10 °C
0.0 ... 10.0 V
1.0 V
10 ... 90 °C
80 °C
0.0 ... 10.0 V
8.0 V
Yes, No
No
0.1 ... 9.9 V
2.0 V
1 ... 90 °C
10 °C
1 ... 90 °C
80 °C
Yes, No
No
system dependent
S3
10 ... 600 s
30 s
0.5 ... 20.0 K
1.0 K
0.1 ... 1.0 V
0.1 V
Yes, No
No
0 ... 120 min
10 min
The characteristic curve of the 0-10 V signal as a function of the boiler set tem-
perature are defined by means of 2 set points according to the specifications of
the boiler manufacturer. At a temperature of Tset 1, the voltage signal of the heat
generator is Volt 1. At a temperature of Tset 2, the voltage signal of the heat
generator is Volt 2. The controller automatically calculates the characteristic curve
resulting from these values. If the permanent voltage option is activated, the pa-
rameter Volt appears, by means of which a minimum voltage that is permanently
applied to the output can be defined.
Voltage signal in V
By means of the adjustment channels Tmax and Tmin the maximum and mini-
mum limitations for the boiler set temperature can be defined.
When the Sensor flow option is activated, the controller will monitor whether
the heat generator actually reaches the desired set temperature and will, if neces-
sary, adjust the voltage signal accordingly. In order to do so, the controller will check
the temperature at the boiler flow sensor when the Interval has elapsed. If the
temperature measured deviates from the boiler set temperature by more than the
Hysteresis value, the voltage signal will be adapted by the Correction value. This
process will be repeated until the temperature measured is identical to the boiler
set temperature.
When the Minimum runtime option is activated, a minimum runtime can be
adjusted for the demand.
Set boiler temperature in °C
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