Differential Controller
User Guide
49
Explanation of the Set
Values/Functions
In order to modify the standard
settings, refer to the chapter 'Electrical
connections', select the relevant system
according to the hydraulic systems
illustrated and define these settings first
of all.
The chapter 'Explanation of Set
Values/Functions' describes the various
set values according to their
dependence on the selected/realized
system (1-2).
If the controller, e.g. for System 1 is
used, only refer to the function
descriptions related to this system.
User Set Values
01 Set Time
Set the current time (Indicators, pump
kick function and reheating function).
02 Weekday
Set the current weekday (1-7,
1=Monday) (Display only).
Resetting the Production Indicators
03 Day's Production Indicator
System 1 Only (System 2 -> No
Function):
Reset the value to "0000" by pressing
the Prog key
(for at least 2 seconds). The value is
reset to "0000" at 24h.
04 Total Production Indicator
System 1 Only (System 2 -> No
Function):
This value is updated at 24:00. => To
determine the current total value
accurately, the day's production value
must be added to the "indicated" total
production value. Reset the value to
"0000" by pressing the Prog key
(for at least 2 seconds).
Pump Kick Function (Temperature
Test Function)
System 1 Only (System 2 -> No
Function):
The pump kick function can be
executed during the time period of the
day in which solar production is
expected [P05-P06]. This function
should ensure that the actual collector
temperature can be measured by the
collector sensor even when the collector
pumps are not operating. The function
is deactivated when P05=P06="----" or
P60=0.
Each time the kick pause [P61] has
ended, the corresponding collector
pump is activated for the period of the
kick duration [P60] (heat transport to
the sensor). If a temperature increase of
0.5K is detected on the respective
collector sensor during the measuring
period [P62], the collector pump is
activated for one minute. Finally, the
switch-on conditions for the collector
pump are checked.
05 Pump Kick Function Switch-On
Time
(Refer to "Pump kick function" section).
05 Pump Kick Function Switch-Off
Time
(Refer to "Pump kick function" section).
Fitter – Set Values
20 Enter Code No.
After entering the code number, the set
values assigned to the fitter level can be
modified. Standard value: 0000.
21 Valid Code No.
The code number currently valid can be
modified with this setting (Value only
visible after entering the currently valid
code No.).
22 System Selection (See Appended
Diagrams)
On selecting the system, the function of
the device is redefined. Set the system
number according to the connection
descriptions (System 1 solar or System
2 solid fuel).
After changing the System
Selection parameter, all the set
values are reset to the default
factory values (including the
code No.). The fitter level is
closed.
Switching Thresholds/Hystereses
30 Switching Threshold for Difference
1
The feeding function for storage tank I
via pump A1 is activated when the
temperature difference between sensor
F1 (collector) and sensor F4 (bottom of
tank) has exceeded the temperature
[switching threshold + hysteresis =
P30+P31].
The feeding function for storage tank I
is deactivated when the difference falls
below the set switching threshold.
31 Hysteresis to Switching Threshold
for Difference 1.
Special Functions
40 Enable Temperature, Collector
System 1 Only (System 2 -> No
Function):
The collector pump is activated when
the associated collector temperature
exceeds the limit value set here
by 5K. It is stopped when the collector
temperature falls below the threshold
temperature. This function prevents the
pumps continuing to run when no
relevant heat production is required.
41 Maximum Collector Temperature
System 1 Only (System 2 -> No
Function):
The collector pumps are deactivated
when the related collector temperatures
exceed the safety limits set here. ->
System protection The pumps are
reactivated when the temperature falls
below the temperature [maximum
collector temperature – 10K].
!
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