6
x
FlowSensor
FA ROTEX Solaris RPS4 -
04/2016
21
6.2.5 Pump kick function
During extended shut-down periods, the solar operating pump P
S
is activated for a few seconds every 24 hours.
This prevent s the solar operating pump from seizing up.
6.2.6 Manual operation
Exclusively for commissioning and test purposes, the system can
be switched on manually for the time period saved in the pa-
rameter [H/A].
All the regulation functions are switched off and the solar oper-
ating pump P
S
runs continuously, independent of the system tem-
peratures, at the set output stage.
Ɣ
Pressing (>1 s) both arrow keys simultaneously activates or
deactivates manual operation.
6.2.7 FlowSensor
The FlowSensor (FLS) serves to measure the flow rate "V" and
the feed temperature "T
V
".
With the sensor connected and working:
– the measurement values "V" and "T
V
" are displayed.
– the controller operates after the filling process with the real
spread T
V
- T
R
.
If the system has detected the FlowSensor once, the display
shows an error message if a sensor is faulty or is disconnected
(see section 7.1 "Display of events"). The system then works in
the emergency mode without the FlowSensor.
If the controller detects, after a new installation or a technician
reset, a FlowSensor, the value "20" is set automatically in the
parameter [FLS active].
The correct parameter value for the FlowSensor fitted to the
system must always be checked and adjusted if necessary (see
tab. 6-1). By entering the parameter value "0" you can deactivate
the FlowSensor.
No error message is displayed if the FlowSensor is disabled by
the heating technician. The controller now works without the
measurement for the flow. The feed temperature "T
V
" is set to be
equal to the solar panel temperature "T
K
".
CAUTION!
Uncontrolled manual operation can lead to heat
loss, excessively high storage tank tempera-
tures and, under certain cold situations, even to
frost damage.
The manual mode cannot be activated with active "en-
hanced frost protection function" (star symbol in display
flashing - see Section 6.2.10).
