5
x
Control unit operation
32
FA ROTEX Solaris RPS3 25M - 03/2010
5.2.6 Solaris FlowSensor
The optional FlowSensor (FLS) is used to measure flow rate "V" and flow temperature "T
V
".
With the sensor connected and working:
– the measured values "V" and "T
V
" are displayed.
– after the filling procedure, the control unit works with the actual system temperature difference between inflow and return
flow temperatures.
When the system has detected the FlowSensor, and if a sensor is faulty or is removed, the display shows a corresponding error
message (see Chapter 6.1). The system then works in the emergency mode without the FlowSensor.
If the controller detects a FlowSensor after a new installation or a specialist reset, the value "100" is automatically set for the
"FLS active" parameter. The correct parameter value for the FlowSensor installed in the system must always be checked and set
if necessary (see Table 5-1). The FlowSensor can be deactivated by entering the parameter value "0".
No error message is displayed if the FlowSensor is disabled by the heating specialist. The controller now works without the
measurement for the flow rate. The flow temperature "T
V
" is thus assumed to be the same as the collector temperature "T
K
".
5.2.7 Output calculation, maximum values, and yield count
When a Solaris FlowSensor is connected, calculation and balancing of the system operating data is carried out, such as e. g. the
current heat output and the solar heat yield. The maximum and calculated values can be requested on the display (see Chap. 5.3).
Values greater than 0 which have not been deleted are still displayed even after disconnecting or disabling the FlowSensor
(without further updating).
5.2.8 Overallresetfunction
The controller responds to an overall reset with a new start (self-test), whereby all parameters are set to their default (factory)
values, and all disabled pump output stages are enabled. Reset occurs with the following:
•
Via menu path: activation by the heating engineer in the "System" setup menu.
•
Rapid access: simultaneously press the OK and the arrow keys.
FlowSensor type
Value of
"FLS active"
parameter
Minimum flow rate during
start-up phase "V1" in l/min
Minimum flow rate during
operating phase "V2" in l/min
Any
0
FLS deactivated - no flow quantity
FLS20 (
16 41 07)
20
2.0
1.5
FLS40 (
on request)
40
4.0
2.5
FLS100 (
16 41 03)
100*
10.0
5.5
Table 5-1 Overview of FlowSensors
*value set automatically when FlowSensor detected
The calculation and balancing of the system's operating data (e. g. solar heat yield) are not substitutes for a
calibrated calorimeter. These values may not be used for invoicing heating costs or similar legally valid account-
ing purposes.
An overall reset causes all individual settings to be lost and the incidence memory to be cleared. All calculated
quantities (info parameters) are set to zero.
When the overall reset function is initiated via the menu path, the total heat yield is preserved. Using
the rapid access via the key combination, even this value is deleted.
