Operation manual of solar controller SR1568
Page 54 of 87
TEMPRE (temperature controlled DHW circulation within the preset 3 time
sections)
This controller provides an output for running DHW circulation pump, which can be controlled
by a temperature, at this case, an extra circuit pump (connect to the output REL option) and
an extra temperature sensor mounted on the hot water return pipe (connect to the input
which set under T_sensor menu ) should be installed in the system. When the temperature of
DHW return is lower than the preset switch-on temperature, circuit pump is triggered, until
temperature rises up to the switch-off temperature, pump is stopped.
START (precondition for triggering the DHW circuit pump) switch on/off
START ON: tank’s temperature sensor (default T3) is 2
o
C higher than the preset switch-off
temperature, and then DHW circuit pump is triggered.
TIME (Time controlled DHW circuit pump within 3 time sections)
This controller can provides an output for running DHW circulation pump, which can also be
controlled by time, at this case, only an extra circuit pump (connect to output REL) is needed.
Pump is triggered by time, within a running time section, as default set, pump runs for 3
minutes and then ceases for 15 minutes, same process repeated within the running time
section.
If it is needed to close one time section, just set the start time and stop time at a same value
(e.g. 05:00 starts, 05:00 stops)
Password: 0000 (Password protection, default is 0000)
Through password set to limit the user to set some parameters, 4 digitals needed. Default is
0000.
SYS (System choose)