Operation manual of solar water controller SR868C8/SR868C8Q
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Example to explain:
If you set thermal energy measuring parameter (OHQM) is off, that means this function
is deactivated, then, FMAX, MEDT and MED% functions are disappeared in the
submenu, only when this function (OHQM) is activated, they are just appear in the
submenu. (See detailed in
§3.2 menu structure)
Following submenu can be accessed through menu “FUN”
DVWG Anti-Legionella function------------------------------------------------------------------4.6.1
CIRC Temperature controlled hot water circulation pump -------------------------------4.6.2
nMIN Solar circuit pump speed adjusting（RPM speed controlling）--------------4.6.3
DTS Standard temperature difference（for circuit pump speed adjusting）------4.6.3.1
RIS Increase rate (for circuit pump speed adjusting)------------------------------------4.6.3.2
OHQM Thermal energy measuring-------------------------------------------------------------4.6.4
FMAX Flow rate-----------------------------------------------------------------------------------4.6.4.1
MEDT Type of heat transfer liquid------------------------------------------------------------4.6.4.2
MED% Concentration of anti-freezing liquid-------------------------------------------------.6.4.3
INTV Pump interval function ---------------------------------------------------------------------4.6.5
tRUN Pump interval time------------------------------------------------------------------------4.6.5.1
tSTP Pump running time-----------------------------------------------------------------------4.6.5.2
BYPA High temperature by-pass function
(tank temperature automatically adjusting) ------------------------------------------------4.6.6
4.6.1 DVWG Anti-Legionella function
Description:
In order to avoid occurring bacteria in water tank when the temperature of tank is lower
for a long time, controller will check the temperature of tank every 7 days in a period
automatically, if the temperature of tank is never over 70
o
C during this period, then at
the factory set default time of 01:00 on the seventh day of the period auxiliary heating
system is triggered automatically to heat water until it rises up to 70
o
C, bacteria is killed
by high temperature, whereafter function is deactivated.
Setup steps:
To access main menu FUN, then select submenu DVWG, “DVWG OFF” displays on
screen. Default set is “OFF”.
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