Operation manual of solar water controller SR868C8/SR868C8Q
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achieve the controlling of pump speed. If temperature difference drops to the switch-off
TD(
△
T OFF), circuit pump is ceased.
Setup steps:
To access main menu FUN, then select
submenu DTS, “DTS 08
o
C” displays on the
screen
►Press “SET” button, parameter “08
o
C” blinks
on the screen
►Press “+”“-” button, to adjust standard TD, adjustable range
（
2
℃～
30
℃）
, factory set
is 08
o
C
► Press “ESC” button to exit the menu or wait for 20 seconds to exit automatically,
parameters are saved automatically.
4.6.3.2 RIS Temperature increase rate (for circuit pump speed adjusting)
Note: SR868C8 doesn’t have this function
Setup steps:
To access main menu FUN, then select submenu RIS, “RIS 01
o
C” displays on screen.
►Press “SET” button, parameter “01
o
C” blinks
on the screen
►Press “+”“-” button, to adjust increase rate of
（
RIS
）
of temperature difference, adjustable
range
（
1
℃～
20
℃）
, factory set is 1
o
C
► Press “ESC” button to exit the menu or wait for 20 seconds to exit automatically,
parameters are saved automatically.
4.6.4 OHQM Thermal energy measuring
Note: SR868C8 doesn’t have this function
Description:
Controller has function for measuring the thermal energy; it can measure the energy
which from collector transfers to tank. For the sake of measuring, the temperature (T0,
T1) on going and return pipe should be checked, and an extra flow meter should be
installed on the circulation pipe, it is used for measuring the flow rate.
The thermal energy through solar system is calculated with measured parameter
temperature T1, T0 and flow rate. Thermal energy get in the current day displays in
