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safety temperature is reached, in order to avoid thermal
shock and air pockets in the system.
The collector pump will automatically restart only if the
collector temperature measured with sensor TS_1 is below
the T_SF collector reset temperature.
Collector reset temperature
AFTER SELECTING PARAMETER P10 PRESS
THE ‘
‘ KEY.
WITH ARROWS ‘
‘ OR ‘
‘, YOU CAN CYCLE AMONG
THE FOLLWOWING DATA FOR REGULATION:
- Enable parameter
‘ ENA ‘
- Increase temperature
‘ INC ’
- Pump activation lapse
‘ TIME ’
PRESS THE ‘
‘ KEY TO MODIFY THE DATA
SELECTED; THE DATA WILL START FLASHING.
USE THE ‘
‘ OR ‘
‘, ARROWS TO SET THE
DESIRED NUMERIC VALUE.
PRESS THE ‘
‘ KEY TO CONFIRM THE
PROGRAMMING OR PRESS THE ‘
esc
’ KEY TO
CANCEL THE CHANGES.
P10:
VACUUM TUBES
In some solar systems, for example when vacuum tubes are
installed, the collector temperature measurement could be
slow, because of its non optimal position.
By enabling the function you can choose between two
different operating programs:
P_1
where VTC function is enabled and Boiler safety
thermostats are prioritized.
P_0
where VTC function is enabled and both Boiler and
collector pump safety thermostats are disabled.
By enabling the VTC, the following collector pump control
is started:
If the collector sensor temperature increases by the amount
set in the subparameter ‘INC’ within one minute, then the
collector pump will be operated for the time set in the
subparameter ‘TIME’.
After the activation of the pump for the time set in the
subparameter ‘TIME’, the function will be off for 5 minutes.
PRESS ARROWS ‘
‘ and ‘
‘ TO SET
THE DESIRED VALUE.
PRESS THE ‘
‘ KEY TO CONFIRM THE
PROGRAMMING OR PRESS THE ‘
esc
’ KEY TO CANCEL
THE CHANGES.
AFTER SELECTING PARAMETER P9 PRESS
THE ‘
‘ KEY.
THE DISPLAY SHOWS ‘ T_SF ’.
PRESS ‘
‘. THE DISPLAY
SHOWS ‘T_SF’ FLASHING.
Data
Regulation range
Default
T_SF
OFF / 60 °C .. 180 °C
OFF